restore-replicas

#!/bin/bash
# This is intended to be called from puppet on both the master and the
#  primary machine.  Its purpose is to restore repository configurations
#  when a backup machine is installed from scratch.
# IMPORTANT NOTE: this will restore all the repositories from the primary
#  machine, but if any repositories were added by hand (that is, outside
#  of manage-replicas), then the source URL will be left pointing to the
#  primary machine rather than the real stratum 0 it is supposed to come
#  from.  Those would need to be separately restored with add-repository -H
#  before calling this function.

VARLIB=/var/lib/cvmfs-hastratum1
SHARE=/usr/share/cvmfs-hastratum1

DONEFILE=$VARLIB/restoration-date
if [ -f $DONEFILE ]; then
  exit
fi

if cvmfsha-is-master; then
  exit
fi

if [ ! -f /etc/cvmfs/manage-replicas.conf ]; then
  # not safe to use if there's no manage-replicas.conf
  exit
fi

. /etc/cvmfs/hastratum1.conf

THISHOST="`uname -n`"
case $THISHOST in
    $HOST1) OTHERHOST=$HOST2;;
    $HOST2) OTHERHOST=$HOST1;;
    *) echo "Not running on $HOST1 or $HOST2" >&2; exit 1;;
esac

PATH=$PATH:/usr/sbin
echo "Output is directed to $VARLIB/restore-replicas.out"
sed "s/@otherhost@/$OTHERHOST/" $SHARE/restore-replicas.conf.in >$VARLIB/restore-replicas.conf
if ! manage-replicas -f $VARLIB/restore-replicas.conf >>$VARLIB/restore-replicas.out 2>&1; then
  echo "Restoration of replicas failed" >&2
  exit 1
fi
rm $VARLIB/restore-replicas.conf

# fix the incorrect source URLs
(
# override addcmd/remcmd because we only want to fix URLs, not add or remove
# add new defaults in case there aren't any
echo "addcmd true : @fqrn@"
echo "remcmd true"
# replace any existing addcmd/remcmd in case they're being set
sed 's/^addcmd.*/addcmd true : @fqrn@/;s/^remcmd.*/remcmd true/' /etc/cvmfs/manage-replicas.conf
) > $VARLIB/manage-replicas.conf
if ! manage-replicas -f $VARLIB/manage-replicas.conf >>$VARLIB/restore-replicas.out 2>&1; then
  echo "Restoration of replica source URLs failed" >&2
  exit 1
fi
rm $VARLIB/manage-replicas.conf

date >$DONEFILE