1592 lines
51 KiB
Bash
Executable File
1592 lines
51 KiB
Bash
Executable File
#!/bin/sh
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set -e
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[ -n "$WEAVE_DEBUG" ] && set -x
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SCRIPT_VERSION="unreleased"
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IMAGE_VERSION=latest
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[ "$SCRIPT_VERSION" = "unreleased" ] || IMAGE_VERSION=$SCRIPT_VERSION
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IMAGE_VERSION=${WEAVE_VERSION:-$IMAGE_VERSION}
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# Minimum tested version of Docker + Weave Net
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MIN_DOCKER_VERSION=1.10.0
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# These are needed for remote execs, hence we introduce them here
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DOCKERHUB_USER=${DOCKERHUB_USER:-weaveworks}
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BASE_EXEC_IMAGE=$DOCKERHUB_USER/weaveexec
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EXEC_IMAGE=$BASE_EXEC_IMAGE:$IMAGE_VERSION
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WEAVEDB_IMAGE=$DOCKERHUB_USER/weavedb:latest
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BASE_IMAGE=$DOCKERHUB_USER/weave
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IMAGE=$BASE_IMAGE:$IMAGE_VERSION
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PROXY_HOST=${PROXY_HOST:-$(echo "${DOCKER_HOST#tcp://}" | cut -s -d: -f1)}
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PROXY_HOST=${PROXY_HOST:-127.0.0.1}
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DOCKER_CLIENT_HOST=${DOCKER_CLIENT_HOST:-$DOCKER_HOST}
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# Define some regular expressions for matching addresses.
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# The regexp here is far from precise, but good enough.
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IP_REGEXP="[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"
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CIDR_REGEXP="$IP_REGEXP/[0-9]{1,2}"
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######################################################################
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# helpers that run locally, even without --local
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######################################################################
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usage_no_exit() {
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cat >&2 <<EOF
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Usage:
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weave --help | help
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setup
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version
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weave launch [--password <pass>] [--trusted-subnets <cidr>,...]
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[--host <ip_address>]
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[--name <mac>] [--nickname <nickname>]
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[--no-restart] [--resume] [--no-discovery] [--no-dns]
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[--ipalloc-init <mode>]
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[--ipalloc-range <cidr> [--ipalloc-default-subnet <cidr>]]
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[--plugin=false] [--proxy=false]
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[-H <endpoint>] [--without-dns] [--no-multicast-route]
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[--no-rewrite-hosts] [--no-default-ipalloc]
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[--hostname-from-label <labelkey>]
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[--hostname-match <regexp>]
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[--hostname-replacement <replacement>]
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[--rewrite-inspect]
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[--log-level=debug|info|warning|error]
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[--token <weave-cloud-service-token>]
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<peer> ...
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weave prime
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weave env [--restore]
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config
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dns-args
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weave connect [--replace] [<peer> ...]
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forget <peer> ...
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weave attach [--without-dns] [--rewrite-hosts] [--no-multicast-route]
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[<addr> ...] <container_id>
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detach [<addr> ...] <container_id>
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weave expose [<addr> ...] [-h <fqdn>] [--without-masquerade]
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hide [<addr> ...]
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weave dns-add [<ip_address> ...] <container_id> [-h <fqdn>] |
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<ip_address> ... -h <fqdn>
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dns-remove [<ip_address> ...] <container_id> [-h <fqdn>] |
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<ip_address> ... -h <fqdn>
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dns-lookup <unqualified_name>
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weave status [targets | connections | peers | dns | ipam]
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report [-f <format>]
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ps [<container_id> ...]
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weave stop
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weave reset [--force]
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rmpeer <peer_id> ...
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where <peer> = <ip_address_or_fqdn>[:<port>]
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<cidr> = <ip_address>/<routing_prefix_length>
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<addr> = [ip:]<cidr> | net:<cidr> | net:default
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<endpoint> = [tcp://][<ip_address>]:<port> | [unix://]/path/to/socket
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<peer_id> = <nickname> | <weave internal peer ID>
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<mode> = consensus[=<count>] | seed=<mac>,... | observer
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To troubleshoot and visualize Weave networks, try Weave Cloud: http://www.weave.works/product/cloud/
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EOF
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}
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usage() {
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usage_no_exit
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exit 1
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}
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docker_sock_options() {
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# Pass through DOCKER_HOST if it is a Unix socket;
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# a TCP socket may be secured by TLS, in which case we can't use it
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if echo "$DOCKER_HOST" | grep -q "^unix://" >/dev/null; then
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echo "-v ${DOCKER_HOST#unix://}:${DOCKER_HOST#unix://} -e DOCKER_HOST"
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else
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echo "-v /var/run/docker.sock:/var/run/docker.sock"
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fi
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}
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docker_run_options() {
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echo --privileged --net host $(docker_sock_options)
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}
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exec_options() {
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case "$1" in
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setup|setup-cni|launch|reset)
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echo -v /:/host -e HOST_ROOT=/host
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;;
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# All the other commands that may create the bridge and need machine id files.
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# We don't mount '/' to avoid recursive mounts of '/var'
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attach|expose|hide)
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echo -v /etc:/host/etc -v /var/lib/dbus:/host/var/lib/dbus -e HOST_ROOT=/host
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;;
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esac
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}
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exec_remote() {
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docker $DOCKER_CLIENT_ARGS run --rm \
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$(docker_run_options) \
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--pid host \
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$(exec_options "$@") \
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-e DOCKERHUB_USER="$DOCKERHUB_USER" \
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-e WEAVE_VERSION \
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-e WEAVE_DEBUG \
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-e WEAVE_DOCKER_ARGS \
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-e WEAVE_PASSWORD \
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-e WEAVE_PORT \
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-e WEAVE_HTTP_ADDR \
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-e WEAVE_STATUS_ADDR \
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-e WEAVE_CONTAINER_NAME \
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-e WEAVE_MTU \
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-e WEAVE_NO_FASTDP \
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-e WEAVE_NO_BRIDGED_FASTDP \
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-e DOCKER_BRIDGE \
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-e DOCKER_CLIENT_HOST="$DOCKER_CLIENT_HOST" \
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-e DOCKER_CLIENT_ARGS \
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-e PROXY_HOST="$PROXY_HOST" \
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-e COVERAGE \
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-e CHECKPOINT_DISABLE \
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-e AWSVPC \
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$WEAVEEXEC_DOCKER_ARGS $EXEC_IMAGE --local "$@"
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}
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# Given $1 and $2 as semantic version numbers like 3.1.2, return [ $1 < $2 ]
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version_lt() {
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VERSION_MAJOR=${1%.*.*}
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REST=${1%.*} VERSION_MINOR=${REST#*.}
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VERSION_PATCH=${1#*.*.}
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MIN_VERSION_MAJOR=${2%.*.*}
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REST=${2%.*} MIN_VERSION_MINOR=${REST#*.}
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MIN_VERSION_PATCH=${2#*.*.}
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if [ \( "$VERSION_MAJOR" -lt "$MIN_VERSION_MAJOR" \) -o \
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\( "$VERSION_MAJOR" -eq "$MIN_VERSION_MAJOR" -a \
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\( "$VERSION_MINOR" -lt "$MIN_VERSION_MINOR" -o \
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\( "$VERSION_MINOR" -eq "$MIN_VERSION_MINOR" -a \
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\( "$VERSION_PATCH" -lt "$MIN_VERSION_PATCH" \) \) \) \) ] ; then
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return 0
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fi
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return 1
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}
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check_docker_version() {
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if ! DOCKER_VERSION=$(docker -v | sed -n -e 's|^Docker version \([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*|\1|p') || [ -z "$DOCKER_VERSION" ] ; then
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echo "ERROR: Unable to parse docker version" >&2
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exit 1
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fi
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if version_lt $DOCKER_VERSION $MIN_DOCKER_VERSION ; then
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echo "ERROR: weave requires Docker version $MIN_DOCKER_VERSION or later; you are running $DOCKER_VERSION" >&2
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exit 1
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fi
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}
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######################################################################
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# main
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######################################################################
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[ "$1" = "--local" ] && shift 1 && IS_LOCAL=1
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# Handle special case $1 commands that run locally at the client end
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case "$1" in
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help|--help)
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usage_no_exit
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exit 0
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;;
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version)
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# non-local "version" is special because we want to show the
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# version of the script executed by the user rather than what is
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# embedded in weaveexec.
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[ -z "$IS_LOCAL" ] && echo "weave script $SCRIPT_VERSION"
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;;
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env)
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if [ "$2" = "--restore" ] ; then
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# "env --restore" is special because we always want to process it
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# at the client end.
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if [ "${ORIG_DOCKER_HOST-unset}" = "unset" ] ; then
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echo "Nothing to restore. This is most likely because there was no preceding invocation of 'eval \$(weave env)' in this shell." >&2
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exit 1
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else
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echo "DOCKER_HOST=$ORIG_DOCKER_HOST"
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exit 0
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fi
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fi
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;;
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launch)
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# this is necessary because 'util_op run-container' doesn't do
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# an implied pull like 'docker run' does
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if [ -z "$IS_LOCAL" ] ; then
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for img in $IMAGE $WEAVEDB_IMAGE ; do
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docker inspect -f "_" $img >/dev/null 2>&1 || docker pull $img
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done
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fi
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;;
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setup)
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# call 'docker pull' outside weaveexec so we don't need a
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# docker binary inside
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if [ -z "$IS_LOCAL" ] ; then
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for img in $IMAGE $EXEC_IMAGE $WEAVEDB_IMAGE ; do
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docker pull $img
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done
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fi
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;;
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*)
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[ "$2" = "--help" ] && usage_no_exit && exit 0
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;;
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esac
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if [ -z "$IS_LOCAL" ] ; then
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check_docker_version
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exec_remote "$@"
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exit $?
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fi
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######################################################################
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# main (remote and --local) - settings
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######################################################################
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# Default restart policy for router/proxy
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RESTART_POLICY="--restart always"
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CONTAINER_NAME=${WEAVE_CONTAINER_NAME:-weave}
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PLUGIN_NAME="$DOCKERHUB_USER/net-plugin"
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OLD_PLUGIN_CONTAINER_NAME=weaveplugin
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CNI_PLUGIN_NAME="weave-plugin-$IMAGE_VERSION"
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CNI_PLUGIN_DIR=${WEAVE_CNI_PLUGIN_DIR:-$HOST_ROOT/opt/cni/bin}
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VOLUMES_LABEL=weavevolumes
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# Note VOLUMES_CONTAINER which is for weavewait should change when you upgrade Weave
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VOLUMES_CONTAINER_NAME=weavevolumes-$IMAGE_VERSION
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# DB files should remain when you upgrade, so version number not included in name
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DB_CONTAINER_NAME=${CONTAINER_NAME}db
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DOCKER_BRIDGE=${DOCKER_BRIDGE:-docker0}
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BRIDGE=weave
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# This value is overridden when the datapath is used unbridged
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DATAPATH=datapath
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CONTAINER_IFNAME=ethwe
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BRIDGE_IFNAME=v${CONTAINER_IFNAME}-bridge
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DATAPATH_IFNAME=v${CONTAINER_IFNAME}-datapath
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PORT=${WEAVE_PORT:-6783}
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HTTP_ADDR=${WEAVE_HTTP_ADDR:-127.0.0.1:6784}
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STATUS_ADDR=${WEAVE_STATUS_ADDR:-127.0.0.1:6782}
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PROXY_PORT=12375
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OLD_PROXY_CONTAINER_NAME=weaveproxy
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PROC_PATH="/proc"
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COVERAGE_ARGS=""
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[ -n "$COVERAGE" ] && COVERAGE_ARGS="-test.coverprofile=/home/weave/cover.prof --"
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######################################################################
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# general helpers; independent of docker and weave
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######################################################################
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# utility function to check whether a command can be executed by the shell
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# see http://stackoverflow.com/questions/592620/how-to-check-if-a-program-exists-from-a-bash-script
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command_exists() {
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command -v $1 >/dev/null 2>&1
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}
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fractional_sleep() {
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case $1 in
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*.*)
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if [ -z "$NO_FRACTIONAL_SLEEP" ] ; then
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sleep $1 >/dev/null 2>&1 && return 0
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NO_FRACTIONAL_SLEEP=1
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fi
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sleep $((${1%.*} + 1))
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;;
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*)
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sleep $1
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;;
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esac
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}
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run_iptables() {
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# -w is recent addition to iptables
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if [ -z "$CHECKED_IPTABLES_W" ] ; then
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iptables -S -w >/dev/null 2>&1 && IPTABLES_W=-w
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CHECKED_IPTABLES_W=1
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fi
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iptables $IPTABLES_W "$@"
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}
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# Insert a rule in iptables, if it doesn't exist already
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insert_iptables_rule() {
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IPTABLES_TABLE="$1"
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shift 1
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if ! run_iptables -t $IPTABLES_TABLE -C "$@" >/dev/null 2>&1 ; then
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## Loop until we get an exit code other than "temporarily unavailable"
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while true ; do
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run_iptables -t $IPTABLES_TABLE -I "$@" >/dev/null && return 0
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if [ $? != 4 ] ; then
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return 1
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fi
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done
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fi
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}
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# Delete a rule from iptables, if it exist
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delete_iptables_rule() {
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IPTABLES_TABLE="$1"
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shift 1
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if run_iptables -t $IPTABLES_TABLE -C "$@" >/dev/null 2>&1 ; then
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run_iptables -t $IPTABLES_TABLE -D "$@" >/dev/null
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fi
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}
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# Send out an ARP announcement
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# (https://tools.ietf.org/html/rfc5227#page-15) to update ARP cache
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# entries across the weave network. We do this in addition to
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# configure_arp_cache because a) with those ARP cache settings it
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# still takes a few seconds to correct a stale ARP mapping, and b)
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# there is a kernel bug that means that the base_reachable_time
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# setting is not promptly obeyed
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# (<https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4bf6980dd0328530783fd657c776e3719b421d30>>).
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arp_update() {
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# It's not the end of the world if this doesn't run - we configure
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# ARP caches so that stale entries will be noticed quickly.
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! command_exists arping || $3 arping -U -q -I $1 -c 1 ${2%/*}
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}
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######################################################################
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# weave and docker specific helpers
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######################################################################
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util_op() {
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if command_exists weaveutil ; then
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weaveutil "$@"
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else
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docker run --rm --pid host $(docker_run_options) \
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--entrypoint=/usr/bin/weaveutil $EXEC_IMAGE "$@"
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fi
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}
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check_forwarding_rules() {
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if run_iptables -C FORWARD -j REJECT --reject-with icmp-host-prohibited > /dev/null 2>&1; then
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cat >&2 <<EOF
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WARNING: existing iptables rule
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'-A FORWARD -j REJECT --reject-with icmp-host-prohibited'
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will block name resolution via weaveDNS - please reconfigure your firewall.
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EOF
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fi
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}
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# Detect the current bridge/datapath state. When invoked, the values of
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# $BRIDGE and $DATAPATH are expected to be distinct. $BRIDGE_TYPE and
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# $DATAPATH are set correctly on success; failure indicates that the
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# bridge/datapath devices have yet to be configured. If netdevs do exist
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# but are in an inconsistent state the script aborts with an error.
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detect_bridge_type() {
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BRIDGE_TYPE=$(util_op detect-bridge-type "$BRIDGE" "$DATAPATH")
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case "$BRIDGE_TYPE" in
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bridge|bridged_fastdp)
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;;
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fastdp)
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DATAPATH="$BRIDGE"
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;;
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*)
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return 1
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;;
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esac
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# WEAVE_MTU may have been specified when the bridge was
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# created (perhaps implicitly with WEAVE_NO_FASTDP). So take
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# the MTU from the bridge unless it is explicitly specified
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# for this invocation.
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MTU=${WEAVE_MTU:-$(cat /sys/class/net/$BRIDGE/mtu)}
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}
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validate_bridge_type() {
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detect_bridge_type || return 0
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if [ -n "$LAUNCHING_ROUTER" ] ; then
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if [ "$BRIDGE_TYPE" = bridge -a -z "$WEAVE_NO_FASTDP" ] &&
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util_op check-datapath 2>/dev/null ; then
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cat <<EOF >&2
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WEAVE_NO_FASTDP is not set, but there is already a bridge present of
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the wrong type for fast datapath. Please do 'weave reset' to remove
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the bridge first.
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EOF
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return 1
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fi
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if [ "$BRIDGE_TYPE" != bridge -a -n "$WEAVE_NO_FASTDP" ] ; then
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cat <<EOF >&2
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WEAVE_NO_FASTDP is set, but there is already a weave fast datapath
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bridge present. Please do 'weave reset' to remove the bridge first.
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EOF
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return 1
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fi
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fi
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}
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expose_ip() {
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[ -z $WITHOUT_MASQUERADE ] || skipNAT="?skipNAT=true"
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ipam_cidrs allocate_no_check_alive weave:expose $CIDR_ARGS
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for CIDR in $ALL_CIDRS ; do
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call_weave "POST" "/expose/$CIDR$skipNAT"
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[ -z "$FQDN" ] || when_weave_running put_dns_fqdn_no_check_alive weave:expose $FQDN $CIDR
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done
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}
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# create veth with ends $1-$2, and then invoke $3..., removing the
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# veth on failure. No-op of veth already exists.
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create_veth() {
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VETHL=$1
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VETHR=$2
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shift 2
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ip link show $VETHL >/dev/null 2>&1 && ip link show $VETHR >/dev/null 2>&1 && return 0
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ip link add name $VETHL mtu $MTU type veth peer name $VETHR mtu $MTU || return 1
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if ! ip link set $VETHL up || ! ip link set $VETHR up || ! "$@" ; then
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ip link del $VETHL >/dev/null 2>&1 || true
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ip link del $VETHR >/dev/null 2>&1 || true
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return 1
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fi
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}
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destroy_bridge() {
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# It's important that detect_bridge_type has not been called so
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# we have distinct values for $BRIDGE and $DATAPATH. Make best efforts
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# to remove netdevs of any type with those names so `weave reset` can
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# recover from inconsistent states.
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for NETDEV in $BRIDGE $DATAPATH ; do
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if [ -d /sys/class/net/$NETDEV ] ; then
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if [ -d /sys/class/net/$NETDEV/bridge ] ; then
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ip link del $NETDEV
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else
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util_op delete-datapath $NETDEV
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fi
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|
fi
|
|
done
|
|
|
|
# Remove any lingering bridged fastdp, pcap and attach-bridge veths
|
|
for VETH in $(ip -o link show | grep -o v${CONTAINER_IFNAME}[^:@]*) ; do
|
|
ip link del $VETH >/dev/null 2>&1 || true
|
|
done
|
|
|
|
if [ "$DOCKER_BRIDGE" != "$BRIDGE" ] ; then
|
|
run_iptables -t filter -D FORWARD -i $DOCKER_BRIDGE -o $BRIDGE -j DROP 2>/dev/null || true
|
|
fi
|
|
|
|
[ -n "$DOCKER_BRIDGE_IP" ] || DOCKER_BRIDGE_IP=$(util_op bridge-ip $DOCKER_BRIDGE)
|
|
|
|
run_iptables -t filter -D INPUT -i $DOCKER_BRIDGE -p udp --dport 53 -j ACCEPT >/dev/null 2>&1 || true
|
|
run_iptables -t filter -D INPUT -i $DOCKER_BRIDGE -p tcp --dport 53 -j ACCEPT >/dev/null 2>&1 || true
|
|
|
|
run_iptables -t filter -D INPUT -i $DOCKER_BRIDGE -p tcp --dst $DOCKER_BRIDGE_IP --dport $PORT -j DROP >/dev/null 2>&1 || true
|
|
run_iptables -t filter -D INPUT -i $DOCKER_BRIDGE -p udp --dst $DOCKER_BRIDGE_IP --dport $PORT -j DROP >/dev/null 2>&1 || true
|
|
run_iptables -t filter -D INPUT -i $DOCKER_BRIDGE -p udp --dst $DOCKER_BRIDGE_IP --dport $(($PORT + 1)) -j DROP >/dev/null 2>&1 || true
|
|
|
|
run_iptables -t filter -D FORWARD -i $BRIDGE ! -o $BRIDGE -j ACCEPT 2>/dev/null || true
|
|
run_iptables -t filter -D FORWARD -o $BRIDGE -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT 2>/dev/null || true
|
|
run_iptables -t filter -D FORWARD -i $BRIDGE -o $BRIDGE -j ACCEPT 2>/dev/null || true
|
|
run_iptables -F WEAVE-NPC >/dev/null 2>&1 || true
|
|
run_iptables -t filter -D FORWARD -o $BRIDGE -m comment --comment "NOTE: this must go before '-j KUBE-FORWARD'" -j WEAVE-NPC 2>/dev/null || true
|
|
run_iptables -t filter -D FORWARD -o $BRIDGE -m state --state NEW -j NFLOG --nflog-group 86 2>/dev/null || true
|
|
run_iptables -t filter -D FORWARD -o $BRIDGE -j DROP 2>/dev/null || true
|
|
run_iptables -X WEAVE-NPC >/dev/null 2>&1 || true
|
|
run_iptables -F WEAVE-NPC-EGRESS >/dev/null 2>&1 || true
|
|
run_iptables -t filter -D FORWARD -i $BRIDGE -m comment --comment "NOTE: this must go before '-j KUBE-FORWARD'" -j WEAVE-NPC-EGRESS 2>/dev/null || true
|
|
run_iptables -t filter -D INPUT -i $BRIDGE -j WEAVE-NPC-EGRESS 2>/dev/null || true
|
|
run_iptables -X WEAVE-NPC-EGRESS >/dev/null 2>&1 || true
|
|
run_iptables -F WEAVE-NPC-EGRESS-DEFAULT >/dev/null 2>&1 || true
|
|
run_iptables -X WEAVE-NPC-EGRESS-DEFAULT >/dev/null 2>&1 || true
|
|
run_iptables -F WEAVE-NPC-EGRESS-CUSTOM >/dev/null 2>&1 || true
|
|
run_iptables -X WEAVE-NPC-EGRESS-CUSTOM >/dev/null 2>&1 || true
|
|
run_iptables -F WEAVE-NPC-EGRESS-ACCEPT >/dev/null 2>&1 || true
|
|
run_iptables -X WEAVE-NPC-EGRESS-ACCEPT >/dev/null 2>&1 || true
|
|
|
|
run_iptables -F WEAVE-EXPOSE >/dev/null 2>&1 || true
|
|
run_iptables -t filter -D FORWARD -o $BRIDGE -j WEAVE-EXPOSE 2>/dev/null || true
|
|
run_iptables -X WEAVE-EXPOSE >/dev/null 2>&1 || true
|
|
|
|
run_iptables -t nat -F WEAVE >/dev/null 2>&1 || true
|
|
run_iptables -t nat -D POSTROUTING -j WEAVE >/dev/null 2>&1 || true
|
|
run_iptables -t nat -D POSTROUTING -o $BRIDGE -j ACCEPT >/dev/null 2>&1 || true
|
|
run_iptables -t nat -X WEAVE >/dev/null 2>&1 || true
|
|
|
|
ipset destroy weaver-no-masq-local >/dev/null 2>&1 || true
|
|
}
|
|
|
|
add_iface_fastdp() {
|
|
util_op add-datapath-interface $DATAPATH $1
|
|
}
|
|
|
|
add_iface_bridge() {
|
|
ip link set $1 master $BRIDGE
|
|
}
|
|
|
|
add_iface_bridged_fastdp() {
|
|
add_iface_bridge "$@"
|
|
}
|
|
|
|
attach_bridge() {
|
|
bridge="$1"
|
|
LOCAL_IFNAME=v${CONTAINER_IFNAME}bl$bridge
|
|
GUEST_IFNAME=v${CONTAINER_IFNAME}bg$bridge
|
|
|
|
create_veth $LOCAL_IFNAME $GUEST_IFNAME configure_veth_attached_bridge
|
|
}
|
|
|
|
configure_veth_attached_bridge() {
|
|
add_iface_$BRIDGE_TYPE $LOCAL_IFNAME || return 1
|
|
ip link set $GUEST_IFNAME master $bridge
|
|
}
|
|
|
|
router_bridge_opts() {
|
|
echo --docker-bridge "$DOCKER_BRIDGE" --weave-bridge "$BRIDGE" --datapath "$DATAPATH"
|
|
[ -z "$WEAVE_MTU" ] || echo --mtu "$WEAVE_MTU"
|
|
[ -z $WEAVE_NO_FASTDP ] || echo --no-fastdp
|
|
[ -z $WEAVE_NO_BRIDGED_FASTDP ] || echo --no-bridged-fastdp
|
|
}
|
|
|
|
######################################################################
|
|
# functions for interacting with containers
|
|
######################################################################
|
|
|
|
# Print an error to stderr and return with an indicative exit status
|
|
# if the container $1 does not exist or isn't running.
|
|
check_running() {
|
|
if ! STATE=$(util_op container-state $1 2> /dev/null) ; then
|
|
echo "$1 container is not present. Have you launched it?" >&2
|
|
return 1
|
|
elif [ "$STATE" = "restarting" ] ; then
|
|
echo "$1 container is restarting." >&2
|
|
return 2
|
|
elif [ "$STATE" != "running" ] ; then
|
|
echo "$1 container is not running." >&2
|
|
return 2
|
|
fi
|
|
}
|
|
|
|
# Execute $@ only if the weave container is running
|
|
when_weave_running() {
|
|
! check_running $CONTAINER_NAME 2>/dev/null || "$@"
|
|
}
|
|
|
|
# Check that a container $1 with image $2 is not running
|
|
check_not_running() {
|
|
STATE=$(util_op container-state $1 $2 2> /dev/null) || true
|
|
case ${STATE} in
|
|
"running")
|
|
echo "$1 is already running; you can stop it with 'weave stop'." >&2
|
|
return 3
|
|
;;
|
|
"created" | "paused" | "restarting")
|
|
echo "$1 is created, paused, or restarting; you can stop it with 'weave stop'." >&2
|
|
return 1
|
|
;;
|
|
"exited" | "dead")
|
|
util_op remove-container $1 >/dev/null
|
|
;;
|
|
"running image mismatch"*)
|
|
echo "Found another running container named '$1'. Aborting." >&2
|
|
return 2
|
|
;;
|
|
"image mismatch"*)
|
|
echo "Found another container named '$1'. Aborting." >&2
|
|
return 2
|
|
;;
|
|
esac
|
|
}
|
|
|
|
http_call() {
|
|
addr="$1"
|
|
http_verb="$2"
|
|
url="$3"
|
|
shift 3
|
|
CURL_TMPOUT=/tmp/weave_curl_out_$$
|
|
HTTP_CODE=$(curl -o $CURL_TMPOUT -w '%{http_code}' --connect-timeout 3 -s -S -X $http_verb "$@" http://$addr$url) || return $?
|
|
case "$HTTP_CODE" in
|
|
2??) # 2xx -> not an error; output response on stdout
|
|
[ -f $CURL_TMPOUT ] && cat $CURL_TMPOUT
|
|
retval=0
|
|
;;
|
|
404) # treat as error but swallow response
|
|
retval=4
|
|
;;
|
|
*) # anything else is an error; output response on stderr
|
|
[ -f $CURL_TMPOUT ] && cat $CURL_TMPOUT >&2
|
|
retval=1
|
|
esac
|
|
rm -f $CURL_TMPOUT
|
|
return $retval
|
|
}
|
|
|
|
call_weave() {
|
|
TMPERR=/tmp/call_weave_err_$$
|
|
retval=0
|
|
http_call $HTTP_ADDR "$@" 2>$TMPERR || retval=$?
|
|
if [ $retval -ne 0 ] ; then
|
|
check_running $CONTAINER_NAME && cat $TMPERR >&2
|
|
fi
|
|
rm -f $TMPERR
|
|
return $retval
|
|
}
|
|
|
|
death_msg() {
|
|
echo "The $1 container has died. Consult the container logs for further details."
|
|
}
|
|
|
|
# Wait until container $1 is alive enough to respond to "GET /status"
|
|
# http request
|
|
wait_for_status() {
|
|
container="$1"
|
|
shift
|
|
while true ; do
|
|
"$@" GET /status >/dev/null 2>&1 && return 0
|
|
if ! check_running $container >/dev/null 2>&1 ; then
|
|
# stop it restarting
|
|
util_op kill-container $container >/dev/null 2>&1 || true
|
|
echo $(death_msg $container) >&2
|
|
return 1
|
|
fi
|
|
fractional_sleep 0.1
|
|
done
|
|
}
|
|
|
|
# Call $1 for all containers, passing container ID, all MACs and all IPs
|
|
with_container_addresses() {
|
|
COMMAND_WCA=$1
|
|
shift 1
|
|
|
|
CONTAINER_ADDRS=$(util_op container-addrs $BRIDGE "$@") || return 1
|
|
echo "$CONTAINER_ADDRS" | while read CONTAINER_ID CONTAINER_IFACE CONTAINER_MAC CONTAINER_IPS; do
|
|
$COMMAND_WCA "$CONTAINER_ID" "$CONTAINER_IFACE" "$CONTAINER_MAC" "$CONTAINER_IPS"
|
|
done
|
|
}
|
|
|
|
echo_addresses() {
|
|
echo $(printf "%.12s" $1) $3 $4
|
|
}
|
|
|
|
echo_ips() {
|
|
for CIDR in $4; do
|
|
echo ${CIDR%/*}
|
|
done
|
|
}
|
|
|
|
echo_cidrs() {
|
|
echo $4
|
|
}
|
|
|
|
peer_args() {
|
|
res=''
|
|
sep=''
|
|
for p in "$@" ; do
|
|
res="$res${sep}peer=$p"
|
|
sep="&"
|
|
done
|
|
echo "$res"
|
|
}
|
|
|
|
######################################################################
|
|
# CNI helpers
|
|
######################################################################
|
|
|
|
install_cni_plugin() {
|
|
mkdir -p $1 || return 1
|
|
if [ ! -f "$1/$CNI_PLUGIN_NAME" ]; then
|
|
cp /usr/bin/weaveutil "$1/$CNI_PLUGIN_NAME"
|
|
fi
|
|
}
|
|
|
|
upgrade_cni_plugin_symlink() {
|
|
# Remove potential temporary symlink from previous failed upgrade:
|
|
rm -f $1/$2.tmp
|
|
# Atomically create a symlink to the plugin:
|
|
ln -s "$CNI_PLUGIN_NAME" $1/$2.tmp && mv -f $1/$2.tmp $1/$2
|
|
}
|
|
|
|
upgrade_cni_plugin() {
|
|
# Check if weave-net and weave-ipam are (legacy) copies of the plugin, and
|
|
# if so remove these so symlinks can be used instead from now onwards.
|
|
if [ -f $1/weave-net -a ! -L $1/weave-net ]; then rm $1/weave-net; fi
|
|
if [ -f $1/weave-ipam -a ! -L $1/weave-ipam ]; then rm $1/weave-ipam; fi
|
|
|
|
# Create two symlinks to the plugin, as it has different
|
|
# behaviour depending on its name:
|
|
if [ "$(readlink -f $1/weave-net)" != "$1/$CNI_PLUGIN_NAME" ]; then
|
|
upgrade_cni_plugin_symlink $1 weave-net
|
|
fi
|
|
if [ "$(readlink -f $1/weave-ipam)" != "$1/$CNI_PLUGIN_NAME" ]; then
|
|
upgrade_cni_plugin_symlink $1 weave-ipam
|
|
fi
|
|
}
|
|
|
|
create_cni_config() {
|
|
cat >"$1" <<EOF
|
|
{
|
|
"cniVersion": "0.3.0",
|
|
"name": "weave",
|
|
"plugins": [
|
|
{
|
|
"name": "weave",
|
|
"type": "weave-net",
|
|
"hairpinMode": $2
|
|
},
|
|
{
|
|
"type": "portmap",
|
|
"capabilities": {"portMappings": true},
|
|
"snat": true
|
|
}
|
|
]
|
|
}
|
|
EOF
|
|
}
|
|
|
|
setup_cni() {
|
|
# if env var HAIRPIN_MODE is not set, default it to true
|
|
HAIRPIN_MODE=${HAIRPIN_MODE:-true}
|
|
if install_cni_plugin $CNI_PLUGIN_DIR ; then
|
|
upgrade_cni_plugin $CNI_PLUGIN_DIR
|
|
fi
|
|
|
|
# Weave will use .conflist for versions > 2.4.0. So in case of upgrade of old
|
|
# clusters with Weave version <= 2.4.0 remove existing 10-weave.conf
|
|
rm -f $HOST_ROOT/etc/cni/net.d/10-weave.conf
|
|
|
|
if [ -d $HOST_ROOT/etc/cni/net.d -a ! -f $HOST_ROOT/etc/cni/net.d/10-weave.conflist ] ; then
|
|
create_cni_config $HOST_ROOT/etc/cni/net.d/10-weave.conflist $HAIRPIN_MODE
|
|
fi
|
|
}
|
|
|
|
######################################################################
|
|
# weaveDNS helpers
|
|
######################################################################
|
|
|
|
dns_args() {
|
|
retval=0
|
|
# NB: this is memoized
|
|
DNS_DOMAIN=${DNS_DOMAIN:-$(call_weave GET /domain 2>/dev/null)} || retval=$?
|
|
[ "$retval" -eq 4 ] && return 0
|
|
DNS_DOMAIN=${DNS_DOMAIN:-weave.local.}
|
|
|
|
NAME_ARG=""
|
|
HOSTNAME_SPECIFIED=
|
|
DNS_SEARCH_SPECIFIED=
|
|
WITHOUT_DNS=
|
|
while [ $# -gt 0 ] ; do
|
|
case "$1" in
|
|
--without-dns)
|
|
WITHOUT_DNS=1
|
|
;;
|
|
--name)
|
|
NAME_ARG="$2"
|
|
shift
|
|
;;
|
|
--name=*)
|
|
NAME_ARG="${1#*=}"
|
|
;;
|
|
-h|--hostname|--hostname=*)
|
|
HOSTNAME_SPECIFIED=1
|
|
;;
|
|
--dns-search|--dns-search=*)
|
|
DNS_SEARCH_SPECIFIED=1
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
[ -n "$WITHOUT_DNS" ] && return 0
|
|
|
|
[ -n "$DOCKER_BRIDGE_IP" ] || DOCKER_BRIDGE_IP=$(util_op bridge-ip $DOCKER_BRIDGE)
|
|
DNS_ARGS="--dns=$DOCKER_BRIDGE_IP"
|
|
if [ -n "$NAME_ARG" -a -z "$HOSTNAME_SPECIFIED" ] ; then
|
|
HOSTNAME="$NAME_ARG.${DNS_DOMAIN%.}"
|
|
if [ ${#HOSTNAME} -gt 64 ] ; then
|
|
echo "Container name too long to be used as hostname" >&2
|
|
else
|
|
DNS_ARGS="$DNS_ARGS --hostname=$HOSTNAME"
|
|
HOSTNAME_SPECIFIED=1
|
|
fi
|
|
fi
|
|
if [ -z "$DNS_SEARCH_SPECIFIED" ] ; then
|
|
if [ -z "$HOSTNAME_SPECIFIED" ] ; then
|
|
DNS_ARGS="$DNS_ARGS --dns-search=$DNS_DOMAIN"
|
|
else
|
|
DNS_ARGS="$DNS_ARGS --dns-search=."
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# Iff the container in $1 has an FQDN, invoke $2 as a command passing
|
|
# the container as the first argument, the FQDN as the second argument
|
|
# and $3.. as additional arguments
|
|
with_container_fqdn() {
|
|
CONT="$1"
|
|
COMMAND_WCF="$2"
|
|
shift 2
|
|
|
|
CONT_FQDN=$(util_op container-fqdn $CONT 2>/dev/null) || return 0
|
|
CONT_NAME=${CONT_FQDN%%.*}
|
|
[ "$CONT_NAME" = "$CONT_FQDN" -o "$CONT_NAME." = "$CONT_FQDN" ] || $COMMAND_WCF "$CONT" "$CONT_FQDN" "$@"
|
|
}
|
|
|
|
# Register FQDN in $2 as names for addresses $3.. under full container ID $1
|
|
put_dns_fqdn() {
|
|
CHECK_ALIVE="-d check-alive=true"
|
|
put_dns_fqdn_helper "$@"
|
|
}
|
|
|
|
put_dns_fqdn_no_check_alive() {
|
|
CHECK_ALIVE=
|
|
put_dns_fqdn_helper "$@"
|
|
}
|
|
|
|
put_dns_fqdn_helper() {
|
|
CONTAINER_ID="$1"
|
|
FQDN="$2"
|
|
shift 2
|
|
|
|
for ADDR in "$@" ; do
|
|
call_weave PUT /name/$CONTAINER_ID/${ADDR%/*} --data-urlencode fqdn=$FQDN $CHECK_ALIVE || true
|
|
done
|
|
}
|
|
|
|
# Delete all names for addresses $3.. under full container ID $1
|
|
delete_dns() {
|
|
CONTAINER_ID="$1"
|
|
shift 1
|
|
|
|
for ADDR in "$@" ; do
|
|
call_weave DELETE /name/$CONTAINER_ID/${ADDR%/*} || true
|
|
done
|
|
}
|
|
|
|
# Delete any FQDNs $2 from addresses $3.. under full container ID $1
|
|
delete_dns_fqdn() {
|
|
CONTAINER_ID="$1"
|
|
FQDN="$2"
|
|
shift 2
|
|
|
|
for ADDR in "$@" ; do
|
|
call_weave DELETE /name/$CONTAINER_ID/${ADDR%/*}?fqdn=$FQDN || true
|
|
done
|
|
}
|
|
|
|
is_ip() {
|
|
echo "$1" | grep -E "^$IP_REGEXP$" >/dev/null
|
|
}
|
|
|
|
collect_ip_args() {
|
|
IP_ARGS=""
|
|
IP_COUNT=0
|
|
while is_ip "$1" ; do
|
|
IP_ARGS="$IP_ARGS $1"
|
|
IP_COUNT=$((IP_COUNT + 1))
|
|
shift 1
|
|
done
|
|
}
|
|
|
|
collect_dns_add_remove_args() {
|
|
collect_ip_args "$@"
|
|
shift $IP_COUNT
|
|
[ $# -gt 0 -a "$1" != "-h" ] && C="$1" && shift 1
|
|
[ $# -eq 2 -a "$1" = "-h" ] && FQDN="$2" && shift 2
|
|
[ $# -eq 0 -a \( -n "$C" -o \( $IP_COUNT -gt 0 -a -n "$FQDN" \) \) ] || usage
|
|
check_running $CONTAINER_NAME
|
|
if [ -n "$C" ] ; then
|
|
check_running $C
|
|
CONTAINER=$(util_op container-id $C)
|
|
[ $IP_COUNT -gt 0 ] || IP_ARGS=$(with_container_addresses echo_ips $CONTAINER)
|
|
fi
|
|
}
|
|
|
|
######################################################################
|
|
# IP Allocation Management helpers
|
|
######################################################################
|
|
|
|
is_cidr() {
|
|
echo "$1" | grep -E "^$CIDR_REGEXP$" >/dev/null
|
|
}
|
|
|
|
collect_cidr_args() {
|
|
CIDR_ARGS=""
|
|
CIDR_ARG_COUNT=0
|
|
while [ "$1" = "net:default" ] || is_cidr "$1" || is_cidr "${1#ip:}" || is_cidr "${1#net:}" ; do
|
|
CIDR_ARGS="$CIDR_ARGS ${1#ip:}"
|
|
CIDR_ARG_COUNT=$((CIDR_ARG_COUNT + 1))
|
|
shift 1
|
|
done
|
|
}
|
|
|
|
check_overlap() {
|
|
util_op netcheck $1 $BRIDGE
|
|
}
|
|
|
|
detect_awsvpc() {
|
|
[ "$(call_weave GET /ipinfo/tracker 2>/dev/null)" != "awsvpc" ] || AWSVPC=1
|
|
}
|
|
|
|
# Call IPAM as necessary to lookup or allocate addresses
|
|
#
|
|
# $1 is one of 'lookup', 'allocate' or 'allocate_no_check_alive', $2
|
|
# is the full container id. The remaining args are previously parsed
|
|
# CIDR_ARGS.
|
|
#
|
|
# Populates ALL_CIDRS and IPAM_CIDRS
|
|
ipam_cidrs() {
|
|
case $1 in
|
|
lookup)
|
|
METHOD=GET
|
|
CHECK_ALIVE=
|
|
;;
|
|
allocate)
|
|
METHOD=POST
|
|
CHECK_ALIVE="?check-alive=true"
|
|
detect_awsvpc
|
|
if [ -n "$AWSVPC" -a $# -gt 2 ] ; then
|
|
echo "Error: no IP addresses or subnets may be specified in AWSVPC mode" >&2
|
|
return 1
|
|
fi
|
|
;;
|
|
allocate_no_check_alive)
|
|
METHOD=POST
|
|
CHECK_ALIVE=
|
|
;;
|
|
esac
|
|
CONTAINER_ID="$2"
|
|
shift 2
|
|
ALL_CIDRS=""
|
|
IPAM_CIDRS=""
|
|
# If no addresses passed in, select the default subnet
|
|
[ $# -gt 0 ] || set -- net:default
|
|
for arg in "$@" ; do
|
|
if [ "${arg%:*}" = "net" ] ; then
|
|
if [ "$arg" = "net:default" ] ; then
|
|
IPAM_URL=/ip/$CONTAINER_ID
|
|
else
|
|
IPAM_URL=/ip/$CONTAINER_ID/"${arg#net:}"
|
|
fi
|
|
retval=0
|
|
CIDR=$(call_weave $METHOD $IPAM_URL$CHECK_ALIVE) || retval=$?
|
|
if [ $retval -eq 4 -a "$METHOD" = "POST" ] ; then
|
|
echo "IP address allocation must be enabled to use 'net:'" >&2
|
|
return 1
|
|
fi
|
|
[ $retval -gt 0 ] && return $retval
|
|
IPAM_CIDRS="$IPAM_CIDRS $CIDR"
|
|
ALL_CIDRS="$ALL_CIDRS $CIDR"
|
|
else
|
|
if [ "$METHOD" = "POST" ] ; then
|
|
# Assignment of a plain IP address; warn if it clashes but carry on
|
|
check_overlap $arg || true
|
|
# Abort on failure, but not 4 (=404), which means IPAM is disabled
|
|
when_weave_running http_call $HTTP_ADDR PUT /ip/$CONTAINER_ID/$arg$CHECK_ALIVE || [ $? -eq 4 ] || return 1
|
|
fi
|
|
ALL_CIDRS="$ALL_CIDRS $arg"
|
|
fi
|
|
done
|
|
}
|
|
|
|
show_addrs() {
|
|
addrs=
|
|
for cidr in "$@" ; do
|
|
addrs="$addrs ${cidr%/*}"
|
|
done
|
|
echo $addrs
|
|
}
|
|
|
|
######################################################################
|
|
# weave proxy helpers
|
|
######################################################################
|
|
|
|
docker_client_args() {
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
-H|--host)
|
|
DOCKER_CLIENT_HOST="$2"
|
|
shift
|
|
;;
|
|
-H=*|--host=*)
|
|
DOCKER_CLIENT_HOST="${1#*=}"
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
}
|
|
|
|
# TODO: Handle relative paths for args
|
|
# TODO: Handle args with spaces
|
|
tls_arg() {
|
|
PROXY_VOLUMES="$PROXY_VOLUMES -v $2:/home/weave/tls/$3.pem:ro"
|
|
PROXY_ARGS="$PROXY_ARGS $1 /home/weave/tls/$3.pem"
|
|
}
|
|
|
|
# TODO: Handle relative paths for args
|
|
# TODO: Handle args with spaces
|
|
host_arg() {
|
|
PROXY_HOST="$1"
|
|
if [ "$PROXY_HOST" != "${PROXY_HOST#unix://}" ]; then
|
|
host=$(dirname ${PROXY_HOST#unix://})
|
|
if [ "$host" = "${host#/}" ]; then
|
|
echo "When launching the proxy, unix sockets must be specified as an absolute path." >&2
|
|
exit 1
|
|
fi
|
|
PROXY_VOLUMES="$PROXY_VOLUMES -v /var/run/weave:/var/run/weave"
|
|
fi
|
|
PROXY_ARGS="-H $1 $PROXY_ARGS"
|
|
}
|
|
|
|
proxy_parse_args() {
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
-H)
|
|
host_arg "$2"
|
|
shift
|
|
;;
|
|
-H=*)
|
|
host_arg "${1#*=}"
|
|
;;
|
|
-no-detect-tls|--no-detect-tls)
|
|
PROXY_TLS_DETECTION_DISABLED=1
|
|
;;
|
|
-tls|--tls|-tlsverify|--tlsverify)
|
|
PROXY_TLS_ENABLED=1
|
|
PROXY_ARGS="$PROXY_ARGS $1"
|
|
;;
|
|
--tlscacert)
|
|
tls_arg "$1" "$2" ca
|
|
shift
|
|
;;
|
|
--tlscacert=*)
|
|
tls_arg "${1%%=*}" "${1#*=}" ca
|
|
;;
|
|
--tlscert)
|
|
tls_arg "$1" "$2" cert
|
|
shift
|
|
;;
|
|
--tlscert=*)
|
|
tls_arg "${1%%=*}" "${1#*=}" cert
|
|
;;
|
|
--tlskey)
|
|
tls_arg "$1" "$2" key
|
|
shift
|
|
;;
|
|
--tlskey=*)
|
|
tls_arg "${1%%=*}" "${1#*=}" key
|
|
;;
|
|
*)
|
|
REMAINING_ARGS="$REMAINING_ARGS $1"
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
}
|
|
|
|
proxy_args() {
|
|
REMAINING_ARGS=""
|
|
PROXY_VOLUMES=""
|
|
PROXY_ARGS=""
|
|
PROXY_TLS_ENABLED=""
|
|
PROXY_TLS_DETECTION_DISABLED=""
|
|
PROXY_HOST=""
|
|
proxy_parse_args "$@"
|
|
|
|
if [ -z "$PROXY_TLS_ENABLED" -a -z "$PROXY_TLS_DETECTION_DISABLED" ] ; then
|
|
if ! DOCKER_TLS_ARGS=$(util_op docker-tls-args) ; then
|
|
echo -n "Warning: unable to detect proxy TLS configuration. To enable TLS, " >&2
|
|
echo -n "launch the proxy with 'weave launch' and supply TLS options. " >&2
|
|
echo "To suppress this warning, supply the '--no-detect-tls' option." >&2
|
|
else
|
|
proxy_parse_args $DOCKER_TLS_ARGS
|
|
fi
|
|
fi
|
|
if [ -z "$PROXY_HOST" ] ; then
|
|
case "$DOCKER_CLIENT_HOST" in
|
|
""|unix://*)
|
|
PROXY_HOST="unix:///var/run/weave/weave.sock"
|
|
;;
|
|
*)
|
|
PROXY_HOST="tcp://0.0.0.0:$PROXY_PORT"
|
|
;;
|
|
esac
|
|
host_arg "$PROXY_HOST"
|
|
fi
|
|
}
|
|
|
|
proxy_addr() {
|
|
if addr="$(call_weave GET /proxyaddrs)" ; then
|
|
[ -n "$addr" ] || return 1
|
|
echo "$addr" | sed "s/0.0.0.0/$PROXY_HOST/g" | cut -d $'\n' -f1
|
|
else
|
|
return 1
|
|
fi
|
|
}
|
|
|
|
warn_if_stopping_proxy_in_env() {
|
|
if PROXY_ADDR=$(proxy_addr 2>/dev/null) ; then
|
|
[ "$PROXY_ADDR" != "$DOCKER_CLIENT_HOST" ] || echo "WARNING: It appears that your environment is configured to use the Weave Docker API proxy. Stopping it will break this and subsequent docker invocations. To restore your environment, run 'eval \$(weave env --restore)'."
|
|
fi
|
|
}
|
|
|
|
######################################################################
|
|
# launch helpers
|
|
######################################################################
|
|
|
|
launch() {
|
|
LAUNCHING_ROUTER=1
|
|
check_forwarding_rules
|
|
|
|
CONTAINER_PORT=$PORT
|
|
ARGS=
|
|
IPRANGE=
|
|
IPRANGE_SPECIFIED=
|
|
|
|
[ -n "$DOCKER_BRIDGE_IP" ] || DOCKER_BRIDGE_IP=$(util_op bridge-ip $DOCKER_BRIDGE)
|
|
|
|
while [ $# -gt 0 ] ; do
|
|
case "$1" in
|
|
-password|--password)
|
|
[ $# -gt 1 ] || usage
|
|
WEAVE_PASSWORD="$2"
|
|
export WEAVE_PASSWORD
|
|
shift
|
|
;;
|
|
--password=*)
|
|
WEAVE_PASSWORD="${1#*=}"
|
|
export WEAVE_PASSWORD
|
|
;;
|
|
-port|--port)
|
|
[ $# -gt 1 ] || usage
|
|
CONTAINER_PORT="$2"
|
|
shift
|
|
;;
|
|
--port=*)
|
|
CONTAINER_PORT="${1#*=}"
|
|
;;
|
|
-iprange|--iprange|--ipalloc-range)
|
|
[ $# -gt 1 ] || usage
|
|
IPRANGE="$2"
|
|
IPRANGE_SPECIFIED=1
|
|
shift
|
|
;;
|
|
--ipalloc-range=*)
|
|
IPRANGE="${1#*=}"
|
|
IPRANGE_SPECIFIED=1
|
|
;;
|
|
--no-restart)
|
|
RESTART_POLICY=
|
|
;;
|
|
*)
|
|
ARGS="$ARGS '$(echo "$1" | sed "s|'|'\"'\"'|g")'"
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
eval "set -- $ARGS"
|
|
|
|
setup_cni
|
|
validate_bridge_type
|
|
|
|
if [ -z "$IPRANGE_SPECIFIED" ] ; then
|
|
IPRANGE="10.32.0.0/12"
|
|
if ! check_overlap $IPRANGE ; then
|
|
echo "ERROR: Default --ipalloc-range $IPRANGE overlaps with existing route on host." >&2
|
|
echo "You must pick another range and set it on all hosts." >&2
|
|
exit 1
|
|
fi
|
|
else
|
|
if [ -n "$IPRANGE" ] && ! check_overlap $IPRANGE ; then
|
|
echo "WARNING: Specified --ipalloc-range $IPRANGE overlaps with existing route on host." >&2
|
|
echo "Unless this is deliberate, you must pick another range and set it on all hosts." >&2
|
|
fi
|
|
fi
|
|
|
|
# Figure out the location of the actual resolv.conf file because
|
|
# we want to bind mount its directory into the container.
|
|
if [ -L ${HOST_ROOT:-/}/etc/resolv.conf ]; then # symlink
|
|
# This assumes a host with readlink in FHS directories...
|
|
# Ideally, this would resolve the symlink manually, without
|
|
# using host commands.
|
|
RESOLV_CONF=$(chroot ${HOST_ROOT:-/} readlink -f /etc/resolv.conf)
|
|
else
|
|
RESOLV_CONF=/etc/resolv.conf
|
|
fi
|
|
RESOLV_CONF_DIR=$(dirname "$RESOLV_CONF")
|
|
RESOLV_CONF_BASE=$(basename "$RESOLV_CONF")
|
|
|
|
docker_client_args $DOCKER_CLIENT_ARGS
|
|
proxy_args "$@"
|
|
|
|
mkdir -p /var/run/weave
|
|
|
|
# Create a data-only container for persistence data
|
|
if ! util_op container-state $DB_CONTAINER_NAME > /dev/null 2>&1 ; then
|
|
protect_against_docker_hang
|
|
util_op create-volume-container $DB_CONTAINER_NAME $WEAVEDB_IMAGE $VOLUMES_LABEL \
|
|
/weavedb >/dev/null
|
|
fi
|
|
# Create a data-only container to mount the weavewait files from
|
|
if ! util_op container-state $VOLUMES_CONTAINER_NAME > /dev/null 2>&1 ; then
|
|
protect_against_docker_hang
|
|
util_op create-volume-container $VOLUMES_CONTAINER_NAME $EXEC_IMAGE $VOLUMES_LABEL \
|
|
/w /w-noop /w-nomcast >/dev/null
|
|
fi
|
|
|
|
# Set WEAVE_DOCKER_ARGS in the environment in order to supply
|
|
# additional parameters, such as resource limits, to docker
|
|
# when launching the weave container.
|
|
WEAVE_CONTAINER=$(util_op run-container --name $CONTAINER_NAME \
|
|
$(docker_run_options) \
|
|
$RESTART_POLICY \
|
|
--pid host \
|
|
--volumes-from $DB_CONTAINER_NAME \
|
|
--volumes-from $VOLUMES_CONTAINER_NAME \
|
|
$PROXY_VOLUMES \
|
|
-v /var/run/weave:/var/run/weave \
|
|
-v $RESOLV_CONF_DIR:/var/run/weave/etc \
|
|
-v /run/docker/plugins:/run/docker/plugins \
|
|
-v /etc:/host/etc -v /var/lib/dbus:/host/var/lib/dbus \
|
|
-e DOCKER_BRIDGE \
|
|
-e WEAVE_DEBUG \
|
|
-e WEAVE_HTTP_ADDR \
|
|
-e WEAVE_PASSWORD \
|
|
-e EXEC_IMAGE=$EXEC_IMAGE \
|
|
-e CHECKPOINT_DISABLE \
|
|
$WEAVE_DOCKER_ARGS \
|
|
$IMAGE \
|
|
$COVERAGE_ARGS \
|
|
--port $CONTAINER_PORT --nickname "$(hostname)" \
|
|
--host-root=/host \
|
|
$(router_bridge_opts) \
|
|
--ipalloc-range "$IPRANGE" \
|
|
--dns-listen-address $DOCKER_BRIDGE_IP:53 \
|
|
--http-addr $HTTP_ADDR \
|
|
--status-addr $STATUS_ADDR \
|
|
--resolv-conf "/var/run/weave/etc/$RESOLV_CONF_BASE" \
|
|
$PROXY_ARGS \
|
|
$REMAINING_ARGS)
|
|
wait_for_status $CONTAINER_NAME http_call $HTTP_ADDR
|
|
}
|
|
|
|
stop() {
|
|
util_op remove-plugin-network weave || true
|
|
warn_if_stopping_proxy_in_env
|
|
util_op stop-container $CONTAINER_NAME >/dev/null 2>&1 || echo "Weave is not running (ignore on Kubernetes)." >&2
|
|
# In case user has upgraded from <v2.0 and left old containers running
|
|
util_op stop-container $OLD_PLUGIN_CONTAINER_NAME >/dev/null 2>&1 || true
|
|
util_op stop-container $OLD_PROXY_CONTAINER_NAME >/dev/null 2>&1 || true
|
|
conntrack -D -p udp --dport $PORT >/dev/null 2>&1 || true
|
|
}
|
|
|
|
protect_against_docker_hang() {
|
|
# Since the plugin is not running, remove its socket so Docker doesn't try to talk to it
|
|
rm -f $HOST_ROOT/run/docker/plugins/weave.sock $HOST_ROOT/run/docker/plugins/weavemesh.sock
|
|
}
|
|
|
|
######################################################################
|
|
# main (remote and --local)
|
|
######################################################################
|
|
|
|
[ $(id -u) = 0 ] || {
|
|
echo "weave must be run as 'root' when run locally" >&2
|
|
exit 1
|
|
}
|
|
|
|
uname -s -r | sed -n -e 's|^\([^ ]*\) \([0-9][0-9]*\)\.\([0-9][0-9]*\).*|\1 \2 \3|p' | {
|
|
if ! read sys maj min ; then
|
|
echo "ERROR: Unable to parse operating system version $(uname -s -r)" >&2
|
|
exit 1
|
|
fi
|
|
|
|
if [ "$sys" != 'Linux' ] ; then
|
|
echo "ERROR: Operating systems other than Linux are not supported (you have $(uname -s -r))" >&2
|
|
exit 1
|
|
fi
|
|
|
|
if ! [ \( "$maj" -eq 3 -a "$min" -ge 8 \) -o "$maj" -gt 3 ] ; then
|
|
echo "WARNING: Linux kernel version 3.8 or newer is required (you have ${maj}.${min})" >&2
|
|
fi
|
|
}
|
|
|
|
if ! command_exists ip ; then
|
|
echo "ERROR: ip utility is missing. Please install it." >&2
|
|
exit 1
|
|
fi
|
|
|
|
[ $# -gt 0 ] || usage
|
|
COMMAND=$1
|
|
shift 1
|
|
|
|
case "$COMMAND" in
|
|
setup|setup-cni)
|
|
setup_cni
|
|
;;
|
|
version)
|
|
[ $# -eq 0 ] || usage
|
|
VERSION="weave $(call_weave GET /report --get --data-urlencode "format={{ .Version }}" 2> /dev/null)" || VERSION="$(/home/weave/weaver $COVERAGE_ARGS --version)"
|
|
echo $VERSION
|
|
;;
|
|
attach-bridge)
|
|
if detect_bridge_type ; then
|
|
attach_bridge ${1:-$DOCKER_BRIDGE}
|
|
insert_iptables_rule nat POSTROUTING -o $BRIDGE -j ACCEPT
|
|
else
|
|
echo "Weave bridge not found. Please run 'weave launch' and try again" >&2
|
|
exit 1
|
|
fi
|
|
;;
|
|
bridge-type)
|
|
detect_bridge_type && echo $BRIDGE_TYPE
|
|
;;
|
|
launch)
|
|
check_not_running $CONTAINER_NAME $BASE_IMAGE
|
|
if http_call $HTTP_ADDR GET /status >/dev/null 2>&1 ; then
|
|
echo "Weave Net is already running" >&2
|
|
exit 1
|
|
fi
|
|
# Plugin and proxy are started by default. Should users additionally pass --plugin=false or --proxy=false, their overrides will take precedence when parsed by Go.
|
|
launch --plugin --proxy "$@"
|
|
echo "$WEAVE_CONTAINER"
|
|
;;
|
|
env)
|
|
if PROXY_ADDR=$(proxy_addr) ; then
|
|
[ "$PROXY_ADDR" = "$DOCKER_CLIENT_HOST" ] || RESTORE="ORIG_DOCKER_HOST=$DOCKER_CLIENT_HOST"
|
|
echo "export DOCKER_HOST=$PROXY_ADDR $RESTORE"
|
|
fi
|
|
;;
|
|
config)
|
|
PROXY_ADDR=$(proxy_addr) && echo "-H=$PROXY_ADDR"
|
|
;;
|
|
connect)
|
|
[ $# -gt 0 ] || usage
|
|
[ "$1" = "--replace" ] && replace="-d replace=true" && shift
|
|
call_weave POST /connect $replace -d $(peer_args "$@")
|
|
;;
|
|
forget)
|
|
[ $# -gt 0 ] || usage
|
|
call_weave POST /forget -d $(peer_args "$@")
|
|
;;
|
|
status)
|
|
res=0
|
|
SUB_STATUS=
|
|
STATUS_URL="/status"
|
|
SUB_COMMAND="$@"
|
|
while [ $# -gt 0 ] ; do
|
|
SUB_STATUS=1
|
|
STATUS_URL="$STATUS_URL/$1"
|
|
shift
|
|
done
|
|
[ -n "$SUB_STATUS" ] || echo
|
|
call_weave GET $STATUS_URL || res=$?
|
|
if [ $res -eq 4 ] ; then
|
|
echo "Invalid 'weave status' sub-command: $SUB_COMMAND" >&2
|
|
usage
|
|
fi
|
|
[ -n "$SUB_STATUS" ] || echo
|
|
[ $res -eq 0 ]
|
|
;;
|
|
report)
|
|
if [ $# -gt 0 ] ; then
|
|
[ $# -eq 2 -a "$1" = "-f" ] || usage
|
|
call_weave GET /report --get --data-urlencode "format=$2"
|
|
else
|
|
call_weave GET /report -H 'Accept: application/json'
|
|
fi
|
|
;;
|
|
run|start|restart|launch-plugin|stop-plugin|launch-proxy|stop-proxy|launch-router|stop-router)
|
|
echo "The 'weave $COMMAND' command has been removed as of Weave Net version 2.0" >&2
|
|
echo "Please see release notes for further information" >&2
|
|
exit 1
|
|
;;
|
|
dns-args)
|
|
dns_args "$@"
|
|
echo -n $DNS_ARGS
|
|
;;
|
|
docker-bridge-ip)
|
|
util_op bridge-ip $DOCKER_BRIDGE
|
|
;;
|
|
attach)
|
|
DNS_EXTRA_HOSTS=
|
|
REWRITE_HOSTS=
|
|
ATTACH_ARGS=
|
|
collect_cidr_args "$@"
|
|
shift $CIDR_ARG_COUNT
|
|
WITHOUT_DNS=
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
--without-dns)
|
|
WITHOUT_DNS=1
|
|
;;
|
|
--rewrite-hosts)
|
|
REWRITE_HOSTS=1
|
|
;;
|
|
--add-host)
|
|
DNS_EXTRA_HOSTS="$2 $DNS_EXTRA_HOSTS"
|
|
shift
|
|
;;
|
|
--add-host=*)
|
|
DNS_EXTRA_HOSTS="${1#*=} $DNS_EXTRA_HOSTS"
|
|
;;
|
|
--no-multicast-route)
|
|
ATTACH_ARGS="$1"
|
|
;;
|
|
*)
|
|
break
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
[ $# -eq 1 ] || usage
|
|
CONTAINER=$(util_op container-id $1)
|
|
ipam_cidrs allocate $CONTAINER $CIDR_ARGS
|
|
if [ -n "$REWRITE_HOSTS" ] ; then
|
|
# rewrite /etc/hosts, unlinking the file (so Docker does
|
|
# not modify it again) but leaving it with valid contents.
|
|
util_op rewrite-etc-hosts "$CONTAINER" "$EXEC_IMAGE" "$ALL_CIDRS" $DNS_EXTRA_HOSTS
|
|
fi
|
|
[ -n "$AWSVPC" ] && ATTACH_ARGS="--no-multicast-route --keep-tx-on"
|
|
util_op attach-container $ATTACH_ARGS $CONTAINER $BRIDGE $ALL_CIDRS >/dev/null
|
|
[ -n "$WITHOUT_DNS" ] || when_weave_running with_container_fqdn $CONTAINER put_dns_fqdn $ALL_CIDRS
|
|
show_addrs $ALL_CIDRS
|
|
;;
|
|
detach)
|
|
collect_cidr_args "$@"
|
|
shift $CIDR_ARG_COUNT
|
|
[ $# -eq 1 ] || usage
|
|
CONTAINER=$(util_op container-id $1)
|
|
ipam_cidrs lookup $CONTAINER $CIDR_ARGS
|
|
util_op detach-container $CONTAINER $ALL_CIDRS >/dev/null
|
|
when_weave_running with_container_fqdn $CONTAINER delete_dns_fqdn $ALL_CIDRS
|
|
for CIDR in $IPAM_CIDRS ; do
|
|
call_weave DELETE /ip/$CONTAINER/${CIDR%/*}
|
|
done
|
|
show_addrs $ALL_CIDRS
|
|
;;
|
|
dns-add)
|
|
collect_dns_add_remove_args "$@"
|
|
FN=put_dns_fqdn
|
|
[ -z "$CONTAINER" ] && CONTAINER=weave:extern && FN=put_dns_fqdn_no_check_alive
|
|
if [ -n "$FQDN" ] ; then
|
|
$FN $CONTAINER $FQDN $IP_ARGS
|
|
else
|
|
with_container_fqdn $CONTAINER $FN $IP_ARGS
|
|
fi
|
|
;;
|
|
dns-remove)
|
|
collect_dns_add_remove_args "$@"
|
|
[ -z "$CONTAINER" ] && CONTAINER=weave:extern
|
|
if [ -n "$FQDN" ] ; then
|
|
delete_dns_fqdn $CONTAINER $FQDN $IP_ARGS
|
|
else
|
|
delete_dns $CONTAINER $IP_ARGS
|
|
fi
|
|
;;
|
|
dns-lookup)
|
|
[ $# -eq 1 ] || usage
|
|
DOCKER_BRIDGE_IP=$(util_op bridge-ip $DOCKER_BRIDGE)
|
|
dig @$DOCKER_BRIDGE_IP +short $1
|
|
;;
|
|
expose)
|
|
WITHOUT_MASQUERADE=
|
|
FQDN=
|
|
collect_cidr_args "$@"
|
|
shift $CIDR_ARG_COUNT
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
-h)
|
|
[ -z $FQDN ] && FQDN=$2 && shift || usage
|
|
;;
|
|
--without-masquerade)
|
|
WITHOUT_MASQUERADE=1
|
|
;;
|
|
*)
|
|
break
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
[ $# -eq 0 ] || usage
|
|
expose_ip
|
|
show_addrs $ALL_CIDRS
|
|
;;
|
|
hide)
|
|
collect_cidr_args "$@"
|
|
shift $CIDR_ARG_COUNT
|
|
ipam_cidrs lookup weave:expose $CIDR_ARGS
|
|
for CIDR in $ALL_CIDRS ; do
|
|
if ip addr show dev $BRIDGE | grep -qF $CIDR ; then
|
|
ip addr del dev $BRIDGE $CIDR
|
|
delete_iptables_rule nat WEAVE -d $CIDR ! -s $CIDR -j MASQUERADE
|
|
delete_iptables_rule nat WEAVE -s $CIDR ! -d $CIDR -j MASQUERADE
|
|
delete_iptables_rule filter WEAVE-EXPOSE -d $CIDR -j ACCEPT
|
|
when_weave_running delete_dns weave:expose $CIDR
|
|
fi
|
|
done
|
|
for CIDR in $IPAM_CIDRS ; do
|
|
call_weave DELETE /ip/weave:expose/${CIDR%/*}
|
|
done
|
|
show_addrs $ALL_CIDRS
|
|
;;
|
|
ps)
|
|
[ $# -eq 0 ] && CONTAINERS="weave:expose weave:allids" || CONTAINERS="$@"
|
|
with_container_addresses echo_addresses $CONTAINERS
|
|
;;
|
|
stop)
|
|
[ $# -eq 0 ] || usage
|
|
stop
|
|
;;
|
|
reset)
|
|
[ $# -eq 0 ] || [ $# -eq 1 -a "$1" = "--force" ] || usage
|
|
res=0
|
|
[ "$1" = "--force" ] || check_running $CONTAINER_NAME 2>/dev/null || res=$?
|
|
case $res in
|
|
0)
|
|
call_weave DELETE /peer >/dev/null 2>&1 || true
|
|
fractional_sleep 0.5 # Allow some time for broadcast updates to go out
|
|
;;
|
|
1)
|
|
# No such container; assume user already did reset
|
|
;;
|
|
2)
|
|
echo "ERROR: weave is not running; unable to remove from cluster." >&2
|
|
echo "Re-launch weave before reset or use --force to override." >&2
|
|
exit 1
|
|
;;
|
|
esac
|
|
stop
|
|
for NAME in $CONTAINER_NAME $OLD_PROXY_CONTAINER_NAME $OLD_PLUGIN_CONTAINER_NAME ; do
|
|
util_op remove-container -f $NAME >/dev/null 2>&1 || true
|
|
done
|
|
protect_against_docker_hang
|
|
VOLUME_CONTAINERS=$(util_op list-containers $VOLUMES_LABEL)
|
|
[ -n "$VOLUME_CONTAINERS" ] && util_op remove-container -v $VOLUME_CONTAINERS >/dev/null 2>&1 || true
|
|
# weave-kube and v2-plugin put this file in different places; remove either
|
|
rm -f $HOST_ROOT/var/lib/weave/weave-netdata.db >/dev/null 2>&1 || true
|
|
rm -f $HOST_ROOT/var/lib/weave/weavedata.db >/dev/null 2>&1 || true
|
|
destroy_bridge
|
|
for LOCAL_IFNAME in $(ip link show | grep v${CONTAINER_IFNAME}pl | cut -d ' ' -f 2 | tr -d ':') ; do
|
|
ip link del ${LOCAL_IFNAME%@*} >/dev/null 2>&1 || true
|
|
done
|
|
;;
|
|
rmpeer)
|
|
[ $# -gt 0 ] || usage
|
|
res=0
|
|
for PEER in "$@" ; do
|
|
call_weave DELETE /peer/$PEER || res=1
|
|
done
|
|
[ $res -eq 0 ]
|
|
;;
|
|
prime)
|
|
call_weave GET /ring
|
|
;;
|
|
*)
|
|
echo "Unknown weave command '$COMMAND'" >&2
|
|
usage
|
|
;;
|
|
esac
|