diff options
Diffstat (limited to 'extraconfig/tasks/major_upgrade_pacemaker_migrations.sh')
| -rw-r--r-- | extraconfig/tasks/major_upgrade_pacemaker_migrations.sh | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/extraconfig/tasks/major_upgrade_pacemaker_migrations.sh b/extraconfig/tasks/major_upgrade_pacemaker_migrations.sh index 7ed7012d..7c9083a4 100644 --- a/extraconfig/tasks/major_upgrade_pacemaker_migrations.sh +++ b/extraconfig/tasks/major_upgrade_pacemaker_migrations.sh @@ -56,3 +56,126 @@ function is_mysql_upgrade_needed { fi echo "1" } + +# This function returns the list of services to be migrated away from pacemaker +# and to systemd. The reason to have these services in a separate function is because +# this list is needed in three different places: major_upgrade_controller_pacemaker_{1,2} +# and in the function to migrate the cluster from full HA to HA NG +function services_to_migrate { + # The following PCMK resources the ones the we are going to delete + PCMK_RESOURCE_TODELETE=" + httpd-clone + memcached-clone + mongod-clone + neutron-dhcp-agent-clone + neutron-l3-agent-clone + neutron-metadata-agent-clone + neutron-netns-cleanup-clone + neutron-openvswitch-agent-clone + neutron-ovs-cleanup-clone + neutron-server-clone + openstack-aodh-evaluator-clone + openstack-aodh-listener-clone + openstack-aodh-notifier-clone + openstack-ceilometer-central-clone + openstack-ceilometer-collector-clone + openstack-ceilometer-notification-clone + openstack-cinder-api-clone + openstack-cinder-scheduler-clone + openstack-glance-api-clone + openstack-glance-registry-clone + openstack-gnocchi-metricd-clone + openstack-gnocchi-statsd-clone + openstack-heat-api-cfn-clone + openstack-heat-api-clone + openstack-heat-api-cloudwatch-clone + openstack-heat-engine-clone + openstack-nova-api-clone + openstack-nova-conductor-clone + openstack-nova-consoleauth-clone + openstack-nova-novncproxy-clone + openstack-nova-scheduler-clone + openstack-sahara-api-clone + openstack-sahara-engine-clone + " + echo $PCMK_RESOURCE_TODELETE +} + +# This function will migrate a mitaka system where all the resources are managed +# via pacemaker to a newton setup where only a few services will be managed by pacemaker +# On a high-level it will operate as follows: +# 1. Set the cluster in maintenance-mode so no start/stop action will actually take place +# during the conversion +# 2. Remove all the colocation constraints and then the ordering constraints, except the +# ones related to haproxy/VIPs which exist in Newton as well +# 3. Take the cluster out of maintenance-mode +# 4. Remove all the resources that won't be managed by pacemaker in newton. The +# outcome will be +# that they are stopped and removed from pacemakers control +# 5. Do a resource cleanup to make sure the cluster is in a clean state +function migrate_full_to_ng_ha { + if [[ -n $(pcmk_running) ]]; then + pcs property set maintenance-mode=true + + # First we go through all the colocation constraints (except the ones + # we want to keep, i.e. the haproxy/ip ones) and we remove those + COL_CONSTRAINTS=$(pcs config show | sed -n '/^Colocation Constraints:$/,/^$/p' | grep -v "Colocation Constraints:" | egrep -v "ip-.*haproxy" | awk '{print $NF}' | cut -f2 -d: |cut -f1 -d\)) + for constraint in $COL_CONSTRAINTS; do + log_debug "Deleting colocation constraint $constraint from CIB" + pcs constraint remove "$constraint" + done + + # Now we kill all the ordering constraints (except the haproxy/ip ones) + ORD_CONSTRAINTS=$(pcs config show | sed -n '/^Ordering Constraints:/,/^Colocation Constraints:$/p' | grep -v "Ordering Constraints:" | awk '{print $NF}' | cut -f2 -d: |cut -f1 -d\)) + for constraint in $ORD_CONSTRAINTS; do + log_debug "Deleting ordering constraint $constraint from CIB" + pcs constraint remove "$constraint" + done + # At this stage all the pacemaker resources are removed from the CIB. + # Once we remove the maintenance-mode those systemd resources will keep + # on running. They shall be systemd enabled via the puppet converge + # step later on + pcs property set maintenance-mode=false + + # At this stage there are no constraints whatsoever except the haproxy/ip ones + # which we want to keep. We now disable and then delete each resource + # that will move to systemd. + # We want the systemd resources be stopped before doing "yum update", + # that way "systemctl try-restart <service>" is no-op because the + # service was down already + PCS_STATUS_OUTPUT="$(pcs status)" + for resource in $(services_to_migrate) "delay-clone" "openstack-core-clone"; do + if echo "$PCS_STATUS_OUTPUT" | grep "$resource"; then + log_debug "Deleting $resource from the CIB" + if ! pcs resource disable "$resource" --wait=600; then + echo_error "ERROR: resource $resource failed to be disabled" + exit 1 + fi + pcs resource delete --force "$resource" + else + log_debug "Service $resource not found as a pacemaker resource, not trying to delete." + fi + done + + # We need to do a pcs resource cleanup here + crm_resource --wait to + # make sure the cluster is in a clean state before we stop everything, + # upgrade and restart everything + pcs resource cleanup + # We are making sure here that the cluster is stable before proceeding + if ! timeout -k 10 600 crm_resource --wait; then + echo_error "ERROR: cluster remained unstable after resource cleanup for more than 600 seconds, exiting." + exit 1 + fi + fi +} + +function disable_standalone_ceilometer_api { + if [[ -n $(is_bootstrap_node) ]]; then + if [[ -n $(is_pacemaker_managed openstack-ceilometer-api) ]]; then + # Disable pacemaker resources for ceilometer-api + manage_pacemaker_service disable openstack-ceilometer-api + check_resource_pacemaker openstack-ceilometer-api stopped 600 + pcs resource delete openstack-ceilometer-api --wait=600 + fi + fi +} |