Running riak from launchd?

Will Moss wmoss at bu.mp
Sat May 26 12:14:19 EDT 2012


That doesn't seem like it solves the problem. launchd (and other tools like
it) don't want processes to daemonize themselves (which is what riak start
does). Is there a blessed way to run Riak not daemonized?

Will


On Sat, May 26, 2012 at 11:34 AM, Kelly McLaughlin <kelly at basho.com> wrote:

> Hi Izzy. Use riak start and then you can use riak attach if you need to
> attach a console to the running instance.
>
> Kelly
>
> Sent from my iPhone
>
> On May 26, 2012, at 8:38 AM, Izzy Alanis <izzyalanis at gmail.com> wrote:
>
> > Has anyone gotten riak to run under launchd?
> >
> > Or, is there a way to run riak in console mode without the interactive
> > erlang shell?
> >
> > Launchd doesn't want its subprocesses to daemonize themselves. If I
> > set up a launch file to run riak in the foreground with "riak
> > console", its the same as running "riak console < /dev/null"  from the
> > command line, and (I'm guessing here:) the interactive shell sees the
> > end of stream and ends the console session.
> >
> > I expect you'd have the same problem using supervisor as your process
> > controller. Supervisor has a pixproxy program to help in these sort of
> > situations, but riak is not writing out a pid file either(?!).
> >
> > Things I've tried:
> >
> > Piping input from /dev/zero is understandably disastrous:
> >> riak console < /dev/zero
> >
> > Piping input from a fifo just hangs:
> >> mkfifo < /tmp/myfifo
> >> riak console < /tmp/myfifo
> >
> > This seems to mostly work (or might really work well with some extra
> > bash scripting):
> >> mkfifo < /tmp/myfifo
> >> echo > /tmp/myfifo &
> >> riak console < /tmp/myfifo
> > I have that last one in a wrapper script. I could add the bells and
> > whistles to make the fifo a random filename and make sure it gets
> > cleaned up after the script end, etc, etc, etc.
> >
> > Here's my launch config (below), FYI. I'm running it out of
> > /Library/LaunchDaemons, and errang *really* wants a HOME environment
> > variable which is a gotcha for anybody else out there!:
> >
> > Anybody else get something like this working?
> >
> > <?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>com.basho.riak</string>
> >    <key>OnDemand</key>
> >    <false/>
> >    <key>Program</key>
> >    <string>/opt/riak/bin/riak-wrapper</string>
> >    <key>EnvironmentVariables</key>
> >    <dict>
> >        <key>HOME</key>
> >        <string>/opt/riak/</string>
> >    </dict>
> >    <key>StandardOutPath</key>
> >    <string>/opt/riak/log/console.log</string>
> >    <key>StandardErrorPath</key>
> >    <string>/opt/riak/log/error.log</string>
> >    <key>SoftResourceLimits</key>
> >    <dict>
> >        <key>NumberOfFiles</key>
> >        <integer>4096</integer>
> >    </dict>
> >    <key>HardResourceLimits</key>
> >    <dict>
> >        <key>NumberOfFiles</key>
> >        <integer>4096</integer>
> >    </dict>
> > </dict>
> > </plist>
> >
> > _______________________________________________
> > riak-users mailing list
> > riak-users at lists.basho.com
> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
>
> _______________________________________________
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