github.com/niedbalski/juju@v0.0.0-20190215020005-8ff100488e47/acceptancetests/repository/xenial/mysql/hooks/munin-relation-changed (about)

     1  #!/bin/sh
     2  
     3  set -ue
     4  
     5  ip=`relation-get ip`
     6  
     7  if [ -z "$ip" ] ; then
     8    echo "Remote node must provide IP"
     9    exit 0
    10  fi
    11  
    12  reip="^`echo $ip | sed -e 's,\.,\\.,g'`$"
    13  
    14  # Make sure its installed
    15  apt-get -y install munin-node libcache-cache-perl
    16  
    17  if grep -q "^allow $reip$" /etc/munin/munin-node.conf ; then
    18    echo $ip already has access.
    19  else
    20    echo "# added by $0 `date`" >> /etc/munin/munin-node.conf
    21    echo allow $reip >> /etc/munin/munin-node.conf
    22    service munin-node reload
    23  fi
    24  
    25  # now tell remote server about our IP
    26  relation-set ip=`ifconfig  | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'|head -n 1`