2.5 KiB
title, layout
| title | layout |
|---|---|
| Using Weave with Systemd | default |
Using Weave with Systemd
Having installed weave as per readme, you might wish to configure the
init daemon to start it on boot. Most recent Linux distribution releases are
shipping with systemd. The information below should provide you with some
initial guidance on getting a weave service configured on systemd-based OS.
Weave Service Unit and Configuration
A regular service unit definition for weave is shown below and you should
normally place it in /etc/systemd/system/weave.service.
[Unit]
Description=Weave Network
Documentation=http://docs.weave.works/weave/latest_release/
Requires=docker.service
After=docker.service
[Service]
EnvironmentFile=-/etc/sysconfig/weave
ExecStartPre=/usr/local/bin/weave launch $PEERS
ExecStart=/usr/bin/docker attach -f weave
ExecStop=/usr/local/bin/weave stop
[Install]
WantedBy=multi-user.target
To specify the addresses or names of other weave hosts to join the network
you can create the /etc/sysconfig/weave environment file which would be of
the following format:
PEERS="HOST1 HOST2 .. HOSTn"
You can also use the connect command to add participating hosts dynamically.
Additionally, if you want to enable encryption you can specify a
password with e.g. WEAVE_PASSWORD="wfvAwt7sj" in the
/etc/sysconfig/weave environment file, and it will get picked up by
weave on launch. Recommendations for choosing a suitably strong
password can be found here.
You now should be able to launch weave with
sudo systemctl start weave
To ensure weave launches after reboot, you need run
sudo systemctl enable weave
For more information on systemd, please refer to the documentation supplied by your distribution of Linux.
SELinux Tweaks
If your OS has SELinux enabled and you wish to run weave as a systemd unit, then you should follow the instructions below. These instructions apply to CentOS and RHEL as of 7.0. On Fedora 21, there is no need to do this.
Once you have installed weave in /usr/local/bin, set its execution
context with the commands shown below. You will need to have the
policycoreutils-python package installed.
sudo semanage fcontext -a -t unconfined_exec_t -f f /usr/local/bin/weave
sudo restorecon /usr/local/bin/weave