[Varnish] #854: patch: extra features for the varnish initrc script

[Varnish]

#854: patch: extra features for the varnish initrc script
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 Reporter:  jhalfmoon                   |        Type:  enhancement
   Status:  new                         |    Priority:  low        
Milestone:                              |   Component:  build      
  Version:  trunk                       |    Severity:  trivial    
 Keywords:  initrc patch extra feature  |  
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 Hi,

 The following patch adds a few feautures to the varnish
 /etc/init.d/varnish script:

 - status  shows current daemon status and loaded vcls
 - purge   cleans out all vcls except the active vcls
 - reload  allows you to safely load a new vcl config into varnish.
 - prev    activates the previous config, if present
 - next    activates the next config, if present

 These last two feauture allow for a quick rollback of the config, in case
 an error is detected in a config.

 Also, the initrc allows for multiple varnish instances by creating
 symlinks to the initrc script. That way you do not have to create multiple
 initrc scripts. If for example the following links exist:

 /etc/init.d/varnish-acceptance -> /etc/init.d/varnish
 /etc/init.d/varnish-test -> /etc/init.d/varnish

 The the 'varnish-acceptance' instance would get its config files from the
 following location:

 /etc/varnish-acceptance
 /etc/sysconfig/varnish-acceptance

 and the 'varnish-test' instance would get its files from:

 /etc/varnish-test
 /etc/sysconfig/varnish-test

 You can disable the 'multi-instance' feature by changing the
 'instancename' variable in the initrc script from instancename=`basename
 $0` to 'instancename=varnish' . I also added an example sysconfig file, to
 show how to use the multi-instance feature.

-- 
Ticket URL: <http://www.varnish-cache.org/trac/ticket/854>
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