evoadmin-web/scripts/sync-master-to-slave_mail.sh

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#!/bin/sh
#
# Script to do a per domain synchronization of user's maildirs and ldap
# entries.
# It's part of Evocluster project.
set -e
sync() {
set +e
ldapsearch >~/$DOMAIN/dump.sql
rsync -a --delete ~/$DOMAIN $1:
set -e
}
error() {
echo -n "$(date +"%b %d %T") " >>$LOGFILE
echo "ERROR: $1" |tee -a $LOGFILE >&2
}
info() {
echo -n "$(date +"%b %d %T") " >>$LOGFILE
echo "INFO: $1" >>$LOGFILE
if [ -t 0 ]; then
echo "INFO: $1"
fi
}
# Check input parameters
if [ $# -eq 2 ]; then
if [ -d ~/$1 ]; then
DOMAIN=$1
LOGFILE=~/$DOMAIN/evocluster.log
PIDFILE=/tmp/evocluster-mail-$DOMAIN.pid
else
if [ -t 0 ]; then
echo "$HOME/$1 does not exist. Guess no mail configured for this domain."
fi
exit 0
fi
if [ -d /home/$2 ]; then
ACCOUNT=$2
else
error "/home/$2 does not exist."
exit 2
fi
else
echo "Usage: $0 <mail domain> <web account>"
exit 2
fi
# Read the state file
if [ -e /home/$ACCOUNT/state ]; then
. /home/$ACCOUNT/state
else
error 'state file does not exist, I do not know who am I!'
exit 2
fi
# Check if all required variables are set
if [ -n "$STATE" ] && [ -n "$IP" ]; then
LOCAL_STATE=$STATE
REMOTE_IP=$IP
else
error '$STATE or $IP not set in state file!'
exit 2
fi
# Check if there is not another instance of the script running
if [ -e $PIDFILE ]; then
error "$0 already running (PID $(cat $PIDFILE))!"
exit 2
fi
echo "$$" > $PIDFILE
trap "rm -f $PIDFILE" EXIT
if [ $LOCAL_STATE = 'master' ]; then
# Try to connect to the remote server and check if it is a slave
REMOTE_STATE=$(mktemp)
if ssh $REMOTE_IP [ -e /home/$ACCOUNT/state ]; then
ssh $REMOTE_IP cat /home/$ACCOUNT/state >$REMOTE_STATE
elif [ $? -eq 255 ]; then
error "failed to connect to slave ($REMOTE_IP)!"
exit 2
else
error "state file does not exist on slave!"
exit 2
fi
. $REMOTE_STATE
rm -f $REMOTE_STATE
if [ -n "$STATE" ]; then
REMOTE_STATE=$STATE
else
error '$STATE not set in remote state file!'
exit 2
fi
if [ $REMOTE_STATE = 'slave' ]; then
info 'local server is master and remote server is slave.'
info "starting replication at $(/bin/date +"%Y-%m-%d %H:%M")."
sync $REMOTE_IP
info "replication ended at $(/bin/date +"%Y-%m-%d %H:%M")."
else
info 'remote server is not slave. Doing nothing.'
fi
else
info 'local server is not master. Doing nothing.'
fi