How to set up a launch daemon?

[ddebernardy]

The docs suggest that this is possible:

You can also install Thin as a runlevel script (under /etc/init.d/thin) that will start all your servers after boot.

sudo thin install

When trying it on my Mac, however, it yields:

$ sudo thin install
Unknown command: install. Use one of start, stop, restart, config

I'll keep googling around, but some extra documentation on this (and on the recommended way to monitor things) would be quite welcome.

[imanel]

It's because of "install" command is linux only command, and linux is defined by ruby platform variable. It could be easy implemented for Mac after detection of this system will be pulled from pull request #64

[imanel]

Responding to (yet) unanswered question - I can implement config file for autostart(it will be simple XML file copied to directory, so nothing fancy;) is @macournoyer will accept Mac-detection patch.

[ddebernardy]

Well, for the note, I eventually got it to work.

Config file:

DB:~/Sites/rubyapp $ cat config/thin.yml 
--- 
chdir: /Users/denis/Sites/rubyapp
environment: development
address: 0.0.0.0
port: 5000
timeout: 30
log: log/thin/thin.log
pid: tmp/thin/thin.pid
max_conns: 1024
max_persistent_conns: 512
require: []

wait: 30
servers: 1
daemonize: true

shell wrapper:

DB:~/Sites/rubyapp $ cat scripts/thin/thin.sh
#!/bin/sh
#

#
# Init
#
prefix=/opt/local

case $1 in
  start  )  [ -x /opt/local/bin/thin ] && \
            /opt/local/bin/thin start -C /Users/denis/Sites/rubyapp/config/thin.yml #> /dev/null
            ;;
  stop   )  [ -x /opt/local/bin/thin ] && \
            /opt/local/bin/thin stop -C /Users/denis/Sites/rubyapp/config/thin.yml #> /dev/null
            ;;
  restart)  [ -x /opt/local/bin/thin ] && \
            /opt/local/bin/thin restart -C /Users/denis/Sites/rubyapp/config/thin.yml #> /dev/null
            ;;
  *      )  echo "$0: unknown argument: $1";;
esac

plist file:

DB:~/Sites/rubyapp $ cat scripts/thin/thin.plist 
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd" >
<plist version='1.0'>
<dict>
<key>Label</key><string>local.rubyapp.thin</string>
<key>ProgramArguments</key>
<array>
    <string>/opt/local/bin/daemondo</string>
    <string>--label=rubyapp</string>
    <string>--start-cmd</string>
    <string>/Users/denis/Sites/rubyapp/scripts/thin/thin.sh</string>
    <string>start</string>
    <string>;</string>
    <string>--stop-cmd</string>
    <string>/Users/denis/Sites/rubyapp/scripts/thin/thin.sh</string>
    <string>stop</string>
    <string>;</string>
    <string>--restart-cmd</string>
    <string>/Users/denis/Sites/rubyapp/scripts/thin/thin.sh</string>
    <string>restart</string>
    <string>;</string>
    <string>--pid=none</string>
</array>
<key>Debug</key><false/>
<key>Disabled</key><true/>
<key>OnDemand</key><false/>
</dict>
</plist>

Auto-start:

DB:~/Sites/rubyapp $ sudo ln -s scripts/thin/thin.plist /Library/LaunchDaemons/local.rubyapp.thin.plist
DB:~/Sites/rubyapp $ sudo launchctl -v load -w /Library/LaunchDaemons/local.rubyapp.thin.plist

Hope this helps someone...

[macournoyer]

Indeed, didn't work because this command is linux only for now. If you can make a pull request to implement this, I'll merge for sure :)