root@(none) 15:14> create database orchestrator; root@(none) 15:14> grant all on orchestrator.* to 'orchestrator'@'10.0.%' identified by 'Abcd123#'; root@(none) 15:14> flush privileges;
function usage { cat << EOF usage: $0 [-h] [-d master is dead] [-o old master ] [-s ssh options] [-n new master] [-i interface] [-I] [-u SSH user] OPTIONS: -h Show this message -o string Old master hostname or IP address -d int If master is dead should be 1 otherweise it is 0 -s string SSH options -n string New master hostname or IP address -i string Interface exmple eth0:1 -I string Virtual IP -u string SSH user EOF
# command for adding our vip cmd_vip_add="sudo -n $ip2util address add ${vip} dev ${interface}" # command for deleting our vip cmd_vip_del="sudo -n $ip2util address del ${vip}/32 dev ${interface}" # command for discovering if our vip is enabled cmd_vip_chk="sudo -n $ip2util address show dev ${interface} to ${vip%/*}/32" # command for sending gratuitous arp to announce ip move cmd_arp_fix="sudo -n $arping -c 1 -I ${interface} ${vip%/*} " # command for sending gratuitous arp to announce ip move on current server cmd_local_arp_fix="sudo -n $arping -c 1 -I ${interface} ${vip%/*} "
# ensure the vip is added # this command should exit with failure if we are unable to add the vip # if the vip already exists always exit 0 (whether or not we added it) $ssh ${ssh_options} -tt ${ssh_user}@${new_master} \ "[ -z \"\$(${cmd_vip_chk})\" ] && ${cmd_vip_add} && ${cmd_arp_fix} || [ -n \"\$(${cmd_vip_chk})\" ]" rc=$? $cmd_local_arp_fix return $rc }
vip_status() { $arping -c 1 -I ${interface} ${vip%/*} if ping -c 1 -W 1 "$vip"; then return 0 else return 1 fi }
if [[ $isitdead == 0 ]]; then echo "Online failover" if vip_stop; then if vip_start; then echo "$vip is moved to $new_master." if [ $sendmail -eq 1 ]; then mail -s "$vip is moved to $new_master." "$emailaddress" < /dev/null &> /dev/null ; fi else echo "Can't add $vip on $new_master!" if [ $sendmail -eq 1 ]; then mail -s "Can't add $vip on $new_master!" "$emailaddress" < /dev/null &> /dev/null ; fi exit 1 fi else echo $rc echo "Can't remove the $vip from orig_master!" if [ $sendmail -eq 1 ]; then mail -s "Can't remove the $vip from orig_master!" "$emailaddress" < /dev/null &> /dev/null ; fi exit 1 fi
elif [[ $isitdead == 1 ]]; then echo "Master is dead, failover" # make sure the vip is not available if vip_status; then if vip_stop; then if [ $sendmail -eq 1 ]; then mail -s "$vip is removed from orig_master." "$emailaddress" < /dev/null &> /dev/null ; fi else if [ $sendmail -eq 1 ]; then mail -s "Couldn't remove $vip from orig_master." "$emailaddress" < /dev/null &> /dev/null ; fi exit 1 fi fi
if vip_start; then echo "$vip is moved to $new_master." if [ $sendmail -eq 1 ]; then mail -s "$vip is moved to $new_master." "$emailaddress" < /dev/null &> /dev/null ; fi
else echo "Can't add $vip on $new_master!" if [ $sendmail -eq 1 ]; then mail -s "Can't add $vip on $new_master!" "$emailaddress" < /dev/null &> /dev/null ; fi exit 1 fi else echo "Wrong argument, the master is dead or live?"
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