how to run 2 instance of memcached from rc.conf?

[Lei Sun]

I did try this approach...

but no luck. 

whenever I try to start the second one, it says the pid already exists. 

I think is is because of  run_rc_command in rc.subr, it somehow
records down the pid somewhere...

:(

any other good ideas?

Thanks

Lei

On 7/27/05, Glenn Dawson <glenn at antimatter.net> wrote:
> At 11:59 PM 7/26/2005, you wrote:
> >Yeah, the tricky part is not to what to do, but how to do it. I know I
> >need to configure 2 ip or 2 ports.
> >
> >As the memcached.sh is using run_rc_command, and somehow, even if when
> >I am giving it 2 arguments with different port, it still can only
> >start up 1 process instead of 2.
> >
> >So how do I use the same script to run 2 instance of memcached?
> >
> >Thanks in advance.
> 
> There's probably other ways to do this, but this one works:
> 
> create a second script called memcached2.sh in /usr/local/etc/rc.d with the
> following contents:
> 
> #!/bin/sh
> #
> 
> # PROVIDE: memcached2
> # REQUIRE: NETWORKING
> 
> #
> # Add the following lines to /etc/rc.conf to run memcached:
> #
> #memcached2_enable="YES"
> #memcached2_flags=""
> #
> . /etc/rc.subr
> 
> name="memcached2"
> rcvar=`set_rcvar`
> command=/usr/local/bin/memcached2
> command_args="-du nobody ${memcached2_flags}"
> 
> load_rc_config $name
> run_rc_command "$1"
> 
> 
> 
> Then, create a symlink that points memcached2 to memcachd:
> 
> ln -s /usr/local/bin/memcached /usr/local/bin/memcached2
> 
> 
> then, you can use two sets of variables in /etc/rc.conf like:
> 
> memcached_enable="YES"
> memcached_flags="-m 2 -l 10.1.1.245 -p 11211"
> 
> memcached2_enable="YES"
> memcached2_flags="-m 2 -l 10.1.1.245 -p 11212"
> 
> 
> That worked for me on one of my test systems.
> 
> -Glenn
> 
> 
> >Lei
> >
> >On 7/26/05, Glenn Dawson <glenn at antimatter.net> wrote:
> > > At 11:16 PM 7/26/2005, Lei Sun wrote:
> > > >Hi,
> > > >
> > > >I am trying to run 2 instance of memcached from rc.conf, but whenever
> > > >I try to start it the second time, it tells me that the instance is
> > > >already running.
> > > >
> > > >Please help...
> > >
> > > According to the documentation at http://www.danga.com/memcached running
> > > more than one instance on the same machine is only helpful if you have more
> > > than 4GB of RAM.
> > >
> > > To load another instance, you just have to tell it to listen on a different
> > > port, or a different IP address (if the machine you're running it one has
> > > more than one IP).
> > >
> > > -Glenn
> > >
> > >
> > > >my rc.conf
> > > >--------------------------------------------
> > > >defaultrouter="192.168.0.1"
> > > >hostname="aphrodite.us.8po.com"
> > > >ifconfig_em0="inet 192.168.0.200  netmask 255.255.255.0"
> > > >sshd_enable="YES"
> > > >mysql_enable="YES"
> > > >mysql_limits="YES"
> > > >apache_enable="YES"
> > > >memcached_enable="YES"
> > > >memcached_flags="-m 1024 -l 127.0.0.1 -p 11211"
> > > >-----------------------------------------------
> > > >
> > > >
> > > >my /usr/local/etc/rc.d/memcached.sh
> > > >----------------------------------------------
> > > >#!/bin/sh
> > > >#
> > > >
> > > ># PROVIDE: memcached
> > > ># REQUIRE: NETWORKING
> > > >
> > > >#
> > > ># Add the following lines to /etc/rc.conf to run memcached:
> > > >#
> > > ># memcached_enable="YES"
> > > ># memcached_flags=""
> > > >#
> > > >. /etc/rc.subr
> > > >
> > > >name="memcached"
> > > >rcvar=`set_rcvar`
> > > >command=/usr/local/bin/memcached
> > > >command_args="-du nobody ${memcached_flags}"
> > > >
> > > >load_rc_config $name
> > > >run_rc_command "$1"
> > > >--------------------------------------------------
> > > >_______________________________________________
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