diskimage-builder/elements/mysql/install.d/mysql-set-server-id.upstart
Clint Byrum 6bf07b12d3 Set mysql server_id based on instance-id
Do nothing if we are booted on a server which has no instance-id set,
such as a non-cloud VM or server.

Change-Id: I6df81edbea1b2b4e4f1ef11a9f2ddaf100d98eda
2013-04-02 01:32:23 +00:00

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# vim: syntax=upstart
description "Set mysql server_id based on instance-id"
start on starting mysql
task
env INSTANCE_ID="/var/lib/cloud/data/instance-id"
env CONF_TARGET="/etc/mysql/conf.d/server_id.cnf"
pre-start script
if ! [ -e $INSTANCE_ID ] ; then
stop
exit 0
fi
end script
script
instance=$(cat $INSTANCE_ID)
server_id=$(python -c "print 0x${instance##i-}")
cat > $CONF_TARGET.new <<EOF
# Generated by mysql-set-server-id upstart job $(date)
# From $INSTANCE_ID ${instance}
[mysqld]
server_id = $server_id
EOF
mv -f $CONF_TARGET.new $CONF_TARGET
end script