Revision e24999ab doc/examples/hooks/ethers

b/doc/examples/hooks/ethers
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# bridge to /etc/ethers.
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TARGET_BRIDGE="br0"
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DAEMON_PID_FILE="/var/run/dnsmasq.pid"
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# In order to handle concurrent execution of this lock, we use the $LOCKFILE.


  		





  
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# LOCKFILE_CREATE and LOCKFILE_REMOVE are the path names for the lockfile-progs


  		





  
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# programs which we use as helpers.


  		





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LOCKFILE="/var/lock/ganeti_ethers.lock"


  		





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LOCKTIMEOUT=10


  		





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LOCKSLEEP=2


  		





  
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LOCKFILE_CREATE="/usr/bin/lockfile-create"


  		





  
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LOCKFILE_REMOVE="/usr/bin/lockfile-remove"


  		





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hooks_path=$GANETI_HOOKS_PATH


  		





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[ -n "$hooks_path" ] || exit 1


  		





  ......




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nic_count=$GANETI_INSTANCE_NIC_COUNT


  		





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acquire_lockfile() {


  		





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  NOW=$(date +%s)


  		





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  TIMEOUT=$(($NOW + $LOCKTIMEOUT))


  		





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  while ! ( set -o noclobber; echo "$$" > $LOCKFILE) 2> /dev/null ; do


  		





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    NOW=$(date +%s)


  		





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    if [ $NOW -ge $TIMEOUT ]; then


  		





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      logger -s "Cannot acquire lockfile for ethers update, giving up"


  		





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      exit 1


  		





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    fi


  		





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    logger -s "Cannot acquire lockfile for ethers update, waiting"


  		





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    sleep $LOCKSLEEP


  		





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  done


  		





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  trap "rm -f $LOCKFILE" EXIT


  		





  
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  $LOCKFILE_CREATE -l $LOCKFILE || exit 1


  		





  
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  trap "$LOCKFILE_REMOVE -l $LOCKFILE" EXIT


  		





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}


  		





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update_ethers_from_new() {


  		












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