openstack
/
fuel-library
Code Issues Proposed changes

MySQL OCF RA to not chose all-zero-uuid as possible masters 

Select possible masters from nodes with non zero uuids and fall back
to zero ids if only no more meaningfull ids were found.

For example, if 4 nodes have 00000000-0000-0000-0000-000000000000,
and 5th has ef3c5d28-1045-11e6-941c-82b1df28ba4c, chose the latter
and ignore a majority of zero uuids. Otherwise, the possible master
may not be always found as crm_simulate may return negative score
for all candidates with zero ids.

Fuel-CI: disable

Related-bug: #1576244

Change-Id: I0a5108cb6ceb6ef869d89f4993897390c8f4c749
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
(cherry picked from commit 52b12dab71)
Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>
This commit is contained in:
Bogdan Dobrelya 2016-05-02 11:35:12 +02:00 committed by Sergii Golovatiuk
parent 0197b09fc6
commit 1a43fd1e22
1 changed files with 3 additions and 1 deletions
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4
files/fuel-ha-utils/ocf/mysql-wss
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@ -375,7 +375,8 @@ get_master() {
# Find possible masters
# Cut the seqnums off the stored GTID:SEQNO pairs, then find the most seen GTID for the nodes
MASTER_GTID=$(printf -- '%s\n' ${TMP[@]%:*} | grep -vE "^0$" | sort | uniq -c | awk '{print $2}' | head -1)
MASTER_GTID=$(printf -- '%s\n' ${TMP[@]%:*} | grep -vE -e "^0$" -e $ZEROID | sort | uniq -c | awk '{print $2}' | head -1)
[ "${MASTER_GTID}" ] || MASTER_GTID=$ZEROID
ocf_log info "${LH} The most seen GTID is: ${MASTER_GTID}"
for NODE in $NODES; do
NODE_SCORE=`crm_simulate -Ls | awk "/${OCF_RESOURCE_INSTANCE}/ && /clone_color/ && !/${OCF_RESOURCE_INSTANCE}:/ && /${NODE}/" | sed -r -e 's/.*score on (.*)/\1/' | awk -F ':' '{print $2}' | tr -d '[:space:]'`
@ -717,6 +718,7 @@ mysql_stop() {
##########################################################################
DEBUG_LOG="/tmp/mysql.ocf.ra.debug/log"
UUID_REGEX="\w{8}-\w{4}-\w{4}-\w{4}-\w{12}:([[:digit:]]+|-1)"
ZEROID="00000000-0000-0000-0000-000000000000"
if [ "${DEBUG_LOG}" -a -w "${DEBUG_LOG}" -a ! -L "${DEBUG_LOG}" ]; then
DEBUG_LOG_DIR="${DEBUG_LOG%/*}"
if [ -d "${DEBUG_LOG_DIR}" ]; then