0ca1a7942e
This is a major refactor of the mariadb chart. A few things
are accomplished:
* The chart template layout is updated to match our keystone
chart, providing a more structure to the chart.
* The chart was updated to leverage StatefulSets, which requires
Kubernetes 1.5, and helm 2.1.0.
* The bootstrapping process was completely overhauled to support
the unique constraints of statefulsets, namely that they come up
one by one, needing the previous to be in a ready state before
the next is provisioned.
* The references to {{ .IP }} we removed and replaced with POD_IP
environmental passing and address binding was fixed in several
places for wsrep functionality. This may explain several oddities
with the previous setup causing mysterious and intermittent
database consistency issues.
49 lines
1.5 KiB
Smarty
49 lines
1.5 KiB
Smarty
#!/bin/bash
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set -ex
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trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM EXIT
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sudo chown mysql: /var/lib/mysql
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rm -rf /var/lib/mysql/lost+found
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REPLICAS={{ .Values.replicas }}
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PETSET_NAME={{ printf "%s" .Values.service_name }}
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INIT_MARKER="/var/lib/mysql/init_done"
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function join_by { local IFS="$1"; shift; echo "$*"; }
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# Remove mariadb.pid if exists
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if [[ -f /var/lib/mysql/mariadb.pid ]]; then
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if [[ `pgrep -c $(cat /var/lib/mysql/mariadb.pid)` -eq 0 ]]; then
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rm -vf /var/lib/mysql/mariadb.pid
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fi
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fi
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if [ "$REPLICAS" -eq 1 ] ; then
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if [[ ! -f ${INIT_MARKER} ]]; then
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cd /var/lib/mysql
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echo "Creating one-instance MariaDB."
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bash /tmp/bootstrap-db.sh
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touch ${INIT_MARKER}
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fi
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exec mysqld_safe --defaults-file=/etc/my.cnf \
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--console \
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--wsrep-new-cluster \
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--wsrep_cluster_address='gcomm://'
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else
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# give the seed more of a chance to be ready by the time
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# we start the first pet so we succeed on the first pass
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# a little hacky, but prevents restarts as we aren't waiting
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# for job completion here so I'm not sure what else
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# to look for
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sleep 30
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export WSREP_OPTIONS=`python /tmp/peer-finder.py mariadb 0`
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exec mysqld --defaults-file=/etc/my.cnf \
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--console \
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--bind-address="0.0.0.0" \
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--wsrep_node_address="${POD_IP}:{{ .Values.network.port.wsrep }}" \
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--wsrep_provider_options="gcache.size=512M; gmcast.listen_addr=tcp://${POD_IP}:{{ .Values.network.port.wsrep }}" \
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$WSREP_OPTIONS
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fi
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