diff options
Diffstat (limited to 'extraconfig/tasks/major_upgrade_controller_pacemaker_1.sh')
| -rwxr-xr-x | extraconfig/tasks/major_upgrade_controller_pacemaker_1.sh | 144 |
1 files changed, 143 insertions, 1 deletions
diff --git a/extraconfig/tasks/major_upgrade_controller_pacemaker_1.sh b/extraconfig/tasks/major_upgrade_controller_pacemaker_1.sh index f5399222..36d85444 100755 --- a/extraconfig/tasks/major_upgrade_controller_pacemaker_1.sh +++ b/extraconfig/tasks/major_upgrade_controller_pacemaker_1.sh @@ -2,14 +2,96 @@ set -eu -cluster_sync_timeout=600 +cluster_sync_timeout=1800 if pcs status 2>&1 | grep -E '(cluster is not currently running)|(OFFLINE:)'; then echo_error "ERROR: upgrade cannot start with some cluster nodes being offline" exit 1 fi + +# We want to disable fencing during the cluster --stop as it might fence +# nodes where a service fails to stop, which could be fatal during an upgrade +# procedure. So we remember the stonith state. If it was enabled we reenable it +# at the end of this script +STONITH_STATE=$(pcs property show stonith-enabled | grep "stonith-enabled" | awk '{ print $2 }') +pcs property set stonith-enabled=false + +# If for some reason rpm-python are missing we want to error out early enough +if [ ! rpm -q rpm-python &> /dev/null ]; then + echo_error "ERROR: upgrade cannot start without rpm-python installed" + exit 1 +fi + +# In case the mysql package is updated, the database on disk must be +# upgraded as well. This typically needs to happen during major +# version upgrades (e.g. 5.5 -> 5.6, 5.5 -> 10.1...) +# +# Because in-place upgrades are not supported across 2+ major versions +# (e.g. 5.5 -> 10.1), we rely on logical upgrades via dump/restore cycle +# https://bugzilla.redhat.com/show_bug.cgi?id=1341968 +# +# The default is to determine automatically if upgrade is needed based +# on mysql package versionning, but this can be overriden manually +# to support specific upgrade scenario + +# Where to backup current database if mysql need to be upgraded +MYSQL_BACKUP_DIR=/var/tmp/mysql_upgrade_osp +MYSQL_TEMP_UPGRADE_BACKUP_DIR=/var/lib/mysql-temp-upgrade-backup +# Spare disk ratio for extra safety +MYSQL_BACKUP_SIZE_RATIO=1.2 + +# Shall we upgrade mysql data directory during the stack upgrade? +if [ "$mariadb_do_major_upgrade" = "auto" ]; then + ret=$(is_mysql_upgrade_needed) + if [ $ret = "1" ]; then + DO_MYSQL_UPGRADE=1 + else + DO_MYSQL_UPGRADE=0 + fi + echo "mysql upgrade required: $DO_MYSQL_UPGRADE" +elif [ "$mariadb_do_major_upgrade" = 0 ]; then + DO_MYSQL_UPGRADE=0 +else + DO_MYSQL_UPGRADE=1 +fi + if [ "$(hiera -c /etc/puppet/hiera.yaml bootstrap_nodeid)" = "$(facter hostname)" ]; then + if [ $DO_MYSQL_UPGRADE -eq 1 ]; then + if [ -d "$MYSQL_BACKUP_DIR" ]; then + echo_error "Error: $MYSQL_BACKUP_DIR exists already. Likely an upgrade failed previously" + exit 1 + fi + mkdir "$MYSQL_BACKUP_DIR" + if [ $? -ne 0 ]; then + echo_error "Error: could not create temporary backup directory $MYSQL_BACKUP_DIR" + exit 1 + fi + + # the /root/.my.cnf is needed because we set the mysql root + # password from liberty onwards + backup_flags="--defaults-extra-file=/root/.my.cnf -u root --flush-privileges --all-databases --single-transaction" + # While not ideal, this step allows us to calculate exactly how much space the dump + # will need. Our main goal here is avoiding any chance of corruption due to disk space + # exhaustion + backup_size=$(mysqldump $backup_flags 2>/dev/null | wc -c) + database_size=$(du -cb /var/lib/mysql | tail -1 | awk '{ print $1 }') + free_space=$(df -B1 --output=avail "$MYSQL_BACKUP_DIR" | tail -1) + + # we need at least space for a new mysql database + dump of the existing one, + # times a small factor for additional safety room + # note: bash doesn't do floating point math or floats in if statements, + # so use python to apply the ratio and cast it back to integer + required_space=$(python -c "from __future__ import print_function; print(\"%d\" % int((($database_size + $backup_size) * $MYSQL_BACKUP_SIZE_RATIO)))") + if [ $required_space -ge $free_space ]; then + echo_error "Error: not enough free space in $MYSQL_BACKUP_DIR ($required_space bytes required)" + exit 1 + fi + + mysqldump $backup_flags > "$MYSQL_BACKUP_DIR/openstack_database.sql" + cp -rdp /etc/my.cnf* "$MYSQL_BACKUP_DIR" + fi + pcs resource disable httpd check_resource httpd stopped 1800 pcs resource disable openstack-core @@ -46,9 +128,69 @@ while systemctl is-active pacemaker; do fi done +# The reason we do an sql dump *and* we move the old dir out of +# the way is because it gives us an extra level of safety in case +# something goes wrong during the upgrade. Once the restore is +# successful we go ahead and remove it. If the directory exists +# we bail out as it means the upgrade process had issues in the last +# run. +if [ $DO_MYSQL_UPGRADE -eq 1 ]; then + if [ -d $MYSQL_TEMP_UPGRADE_BACKUP_DIR ]; then + echo_error "ERROR: mysql backup dir already exist" + exit 1 + fi + mv /var/lib/mysql $MYSQL_TEMP_UPGRADE_BACKUP_DIR +fi + yum -y install python-zaqarclient # needed for os-collect-config yum -y -q update +# We need to ensure at least those two configuration settings, otherwise +# mariadb 10.1+ won't activate galera replication. +# wsrep_cluster_address must only be set though, its value does not +# matter because it's overriden by the galera resource agent. +cat >> /etc/my.cnf.d/galera.cnf <<EOF +[mysqld] +wsrep_on = ON +wsrep_cluster_address = gcomm://localhost +EOF + +if [ "$(hiera -c /etc/puppet/hiera.yaml bootstrap_nodeid)" = "$(facter hostname)" ]; then + if [ $DO_MYSQL_UPGRADE -eq 1 ]; then + # Scripts run via heat have no HOME variable set and this confuses + # mysqladmin + export HOME=/root + mkdir /var/lib/mysql || /bin/true + chown mysql:mysql /var/lib/mysql + chmod 0755 /var/lib/mysql + restorecon -R /var/lib/mysql/ + mysql_install_db --datadir=/var/lib/mysql --user=mysql + chown -R mysql:mysql /var/lib/mysql/ + mysqld_safe --wsrep-new-cluster & + # We have a populated /root/.my.cnf with root/password here so + # we need to temporarily rename it because the newly created + # db is empty and no root password is set + mv /root/.my.cnf /root/.my.cnf.temporary + timeout 60 sh -c 'while ! mysql -e "" &> /dev/null; do sleep 1; done' + mysql -u root < "$MYSQL_BACKUP_DIR/openstack_database.sql" + mv /root/.my.cnf.temporary /root/.my.cnf + mysqladmin -u root shutdown + # The import was successful so we may remove the folder + rm -r "$MYSQL_BACKUP_DIR" + fi +fi + +# If we reached here without error we can safely blow away the origin +# mysql dir from every controller +if [ $DO_MYSQL_UPGRADE -eq 1 ]; then + rm -r $MYSQL_TEMP_UPGRADE_BACKUP_DIR +fi + +# Let's reset the stonith back to true if it was true, before starting the cluster +if [ $STONITH_STATE == "true" ]; then + pcs -f /var/lib/pacemaker/cib/cib.xml property set stonith-enabled=true +fi + # Pin messages sent to compute nodes to kilo, these will be upgraded later crudini --set /etc/nova/nova.conf upgrade_levels compute "$upgrade_level_nova_compute" # https://bugzilla.redhat.com/show_bug.cgi?id=1284047 |