[Bug 460089] Re: network state is lost if the cluster controller (CC) is stopped

[Mathias Gug]

** Description changed:

  in the eucalyptus-cc upstart script, the line:
  
          rm -f /var/lib/eucalyptus/CC/*
  
  will always clear all CC state when the service is stopped.  The
  upstream init scripts use:
  
  stop/start/restart
  
  to control the service while maintaining CC state (stored in
  /var/lib/eucalyptus/CC/), while:
  
  cleanstop/cleanstart/cleanrestart
  
  will remove the state.  With upstart, an idea is to wrap the above line
  in a conditional that will only be true if a variable is defined on the
  cmdline (i.e. the default behavior would be to leave the state, and if
  an admin really wanted to start from a clean state, or re-read the
  config file, they would have to set the variable on the cmdline):
  
  start eucalyptus-cc CLEAN=1
  stop eucalyptus-cc CLEAN=1
  restart eucalyptus-cc CLEAN=1
  
  and in the file:
  
  if ( test "$CLEAN" == "1" ); then
    	rm -f /var/lib/eucalyptus/CC/*
  fi
  
  -Dan
+ 
+ ===================
+ SRU verification
+ 
+ Impact:
+ If the CC is restarted or rebooted (to be exact if eucalyptus-cc is stopped) all the network configuration for running instances is lost. 
+ 
+ How the bug has been addressed:
+ The post script of the eucalyptus-cc upstart job has been modified to only delete the network state file if the CLEAN environment variable has been set to 1.
+ 
+ To reproduce the bug:
+ 1. Install a CC and one NC.
+ 2. Start an instance with a public IP and log into the running instance.
+ 3. Reboot the CC.
+ 4. After the CC has rebooted, the running instance cannot be accessed via its previous public IP.
+ 5. Once the CC has been upgraded, a reboot of the CC should not prevent login into running instances using their previously assigned public IP.
+ 
+ Regression potential:
+ The discover-ability of the new CLEAN option may be improved.
+ 
+ ===================

-- 
network state is lost if the cluster controller (CC) is stopped
https://bugs.launchpad.net/bugs/460089
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