Since we have init scripts, we ought to have the equivalent for systemd users who cannot upgrade via the normal SIGUSR2 mechanism; but can use multiple services: "unicorn@1" + h"unicorn@2" to accomplish the same thing.
Based on examples by Christos Trochalakis <[email protected]> ref: http://bogomips.org/unicorn-public/[email protected]/ --- examples/unicorn.socket | 11 +++++++++++ examples/[email protected] | 26 ++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) create mode 100644 examples/unicorn.socket create mode 100644 examples/[email protected] diff --git a/examples/unicorn.socket b/examples/unicorn.socket new file mode 100644 index 0000000..7d5f773 --- /dev/null +++ b/examples/unicorn.socket @@ -0,0 +1,11 @@ +# ==> /etc/systemd/system/unicorn.socket <== +[Unit] +Description = unicorn sockets + +[Socket] +ListenStream = 127.0.0.1:8080 +ListenStream = /tmp/path/to/.unicorn.sock +Service = [email protected] + +[Install] +WantedBy = sockets.target diff --git a/examples/[email protected] b/examples/[email protected] new file mode 100644 index 0000000..b058da5 --- /dev/null +++ b/examples/[email protected] @@ -0,0 +1,26 @@ +# ==> /etc/systemd/system/[email protected] <== +# Since SIGUSR2 upgrades do not work under systemd, this service file +# allows starting two simultaneous services during upgrade time +# (e.g. unicorn@1 unicorn@2) with the intention that they take +# turns running in-between upgrades. This should allow upgrading +# without downtime. + +[Unit] +Description = unicorn Rack application server %i +Wants = unicorn.socket +After = unicorn.socket + +[Service] +ExecStart = /usr/bin/unicorn -c /path/to/unicorn.conf.rb /path/to/config.ru +Sockets = unicorn.socket +KillSignal = SIGQUIT +User = nobody +Group = nogroup +ExecReload = /bin/kill -HUP $MAINPID + +# This is based on the Unicorn::Configurator#timeout directive, +# adding a few seconds for scheduling differences: +TimeoutStopSec = 62 + +[Install] +WantedBy = multi-user.target -- EW -- unsubscribe: [email protected] archive: http://bogomips.org/unicorn-public/
