openstack/tripleo-heat-templates
Code Issues Proposed changes

HA: check before restarting resource on stack update

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When container <service>_restart_bundle is run, it checks whether
it can call pcs to restart the associated pacemaker resource, when
applicable.
Make sure we enforce the checks in all cases (when we run during
a stack update / update converge, and during a minor update).

Change-Id: I0367a657ddf440f0b73c4de5346306f12439db15
Closes-Bug: #1868533
This commit is contained in:
Damien Ciabrini 2020-03-23 10:48:08 +01:00
parent a957b0e67f
commit 4d21bab8f2
1 changed files with 18 additions and 8 deletions
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22
container_config_scripts/pacemaker_restart_bundle.sh
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@ -14,6 +14,17 @@ WAIT_TARGET_ANYWHERE=${5:-_}
TRIPLEO_MINOR_UPDATE="${TRIPLEO_MINOR_UPDATE:-false}"
bundle_can_be_restarted() {
local bundle=$1
# As long as the resource bundle is managed by pacemaker and is
# not meant to stay stopped, no matter the state of any inner
# pcmk_remote or ocf resource, we should restart it to give it a
# chance to read the new config.
[ "$(crm_resource --meta -r $1 -g is-managed 2>/dev/null)" != "false" ] && \
[ "$(crm_resource --meta -r $1 -g target-role 2>/dev/null)" != "Stopped" ]
}
if [ x"${TRIPLEO_MINOR_UPDATE,,}" != x"true" ]; then
if hiera -c /etc/puppet/hiera.yaml stack_action | grep -q -x CREATE; then
# Do not restart during initial deployment, as the resource
@ -24,8 +35,12 @@ if [ x"${TRIPLEO_MINOR_UPDATE,,}" != x"true" ]; then
# every node the resource runs on, after the service's configs
# have been updated on all nodes. So we need to run pcs only
# once (e.g. on the service's boostrap node).
if bundle_can_be_restarted ${BUNDLE_NAME}; then
echo "$(date -u): Restarting ${BUNDLE_NAME} globally"
/usr/bin/bootstrap_host_exec $TRIPLEO_SERVICE /sbin/pcs resource restart --wait=__PCMKTIMEOUT__ $BUNDLE_NAME
else
echo "$(date -u): No global restart needed for ${BUNDLE_NAME}."
fi
fi
else
# During a minor update workflow however, a host gets fully
@ -36,12 +51,7 @@ else
# up to date.
HOST=$(facter hostname)
# As long as the resource bundle is managed by pacemaker and is
# not meant to stay stopped, no matter the state of any inner
# pcmk_remote or ocf resource, we should restart it to give it a
# chance to read the new config.
if [ "$(crm_resource --meta -r ${BUNDLE_NAME} -g is-managed 2>/dev/null)" != "false" ] && \
[ "$(crm_resource --meta -r ${BUNDLE_NAME} -g target-role 2>/dev/null)" != "Stopped" ]; then
if bundle_can_be_restarted ${BUNDLE_NAME}; then
# if the resource is running locally, restart it
if crm_resource -r $BUNDLE_NAME --locate 2>&1 | grep -w -q "${HOST}"; then
echo "$(date -u): Restarting ${BUNDLE_NAME} locally on '${HOST}'"