55 lines
1.9 KiB
Bash
Executable File
55 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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set -e
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# You may need to adjust
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# echo 4096 >/proc/sys/net/ipv4/neigh/default/gc_thresh3
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# where the number is greater than NUM_WEAVES*(NUM_WEAVES-1) plus some
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# fudge.
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#
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# Without that, some connections between the weaves may fail to get
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# established, and networking on the host in general becomes
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# broken. There will also be some "net_ratelimit: nnn callbacks
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# suppressed" messages in the syslog.
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START=${FIRST_WEAVE:-1}
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COUNT=${NUM_WEAVES:-28}
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FINISH=$((START+COUNT-1))
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PORT=6783
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weavedir=$(dirname $0)/..
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# Generate a random MAC value - copied from 'weave' script
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random_mac() {
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# In the first byte of the MAC, the 'multicast' bit should be
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# clear and 'locally administered' bit should be set. All other
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# bits should be random.
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od -txC -An -N6 /dev/urandom | ( read a b c d e f && printf "%02x:$b:$c:$d:$e:$f" $((0x$a & ~1 | 2)) )
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}
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case "$1" in
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launch)
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shift 1
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for i in $(seq $START $FINISH); do
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WEAVE_CONTAINER_NAME=weave$i WEAVE_PORT=$((5000+i)) $weavedir/weave launch-router --iface '' --name $(random_mac) --nickname weave$i --port $PORT "$@"
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done
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if [ $START -ne 1 ] ; then
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status=$(docker inspect --format='{{.State.Running}} {{.NetworkSettings.IPAddress}}' weave$((START-1)))
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PREV="${status#true }"
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fi
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for i in $(seq $START $FINISH); do
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if [ -n "$PREV" ] ; then
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echo connecting weave$i to $PREV
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WEAVE_CONTAINER_NAME=weave$i $weavedir/weave connect $PREV
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fi
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status=$(docker inspect --format='{{.State.Running}} {{.NetworkSettings.IPAddress}}' weave$i)
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PREV="${status#true }"
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done
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;;
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stop)
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for i in $(seq $START $FINISH); do
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echo Stopping weave$i
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WEAVE_CONTAINER_NAME=weave$i $weavedir/weave stop-router
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done
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;;
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esac
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