e0841eecde
This PS simplifys the db start and init script, increasing robustness of the mariadb chart on low end hardware. It also removes some unrequired annotations and moves to more explicit qualification of the clustering variables. Change-Id: I6cff5fb6ccfdcc6c82203b0e5eff445ee98bc298
88 lines
2.7 KiB
Smarty
88 lines
2.7 KiB
Smarty
#!/bin/bash
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{{/*
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Copyright 2017 The Openstack-Helm Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/}}
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set -xe
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# Bootstrap database
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CLUSTER_INIT_ARGS=""
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if [ ! -d /var/lib/mysql/mysql ]; then
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if [ "x${POD_NAME}" = "x${SERVICE_NAME}-0" ]; then
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echo No data found for pod 0
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if [ "x${FORCE_BOOTSTRAP}" = "xtrue" ]; then
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echo 'force_bootstrap set, so will force-initialize node 0.'
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CLUSTER_INIT_ARGS=--wsrep-new-cluster
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CLUSTER_BOOTSTRAP=true
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elif ! mysql --defaults-file=/etc/mysql/admin_user.cnf \
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--connect-timeout 2 \
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-e 'select 1'; then
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echo 'No other nodes found, so will initialize cluster.'
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CLUSTER_INIT_ARGS=--wsrep-new-cluster
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CLUSTER_BOOTSTRAP=true
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else
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echo 'Found other live nodes, will attempt to join them.'
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mkdir /var/lib/mysql/mysql
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fi
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else
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echo 'Not pod 0, so will avoid upstream database initialization.'
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mkdir /var/lib/mysql/mysql
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fi
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chown -R mysql:mysql /var/lib/mysql
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fi
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# Construct cluster config
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CLUSTER_CONFIG_PATH=/etc/mysql/conf.d/10-cluster-config.cnf
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MEMBERS=""
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for i in $(seq 1 ${MARIADB_REPLICAS}); do
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if [ "$i" -eq "1" ]; then
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NUM="0"
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else
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NUM="$(expr $i - 1)"
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fi
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CANDIDATE_POD="${SERVICE_NAME}-$NUM.$(hostname -d)"
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if [ "x${CANDIDATE_POD}" != "x${POD_NAME}.$(hostname -d)" ]; then
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if [ -n "${MEMBERS}" ]; then
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MEMBERS+=,
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fi
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MEMBERS+="${CANDIDATE_POD}:${WSREP_PORT}"
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fi
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done
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echo "Writing cluster config for ${POD_NAME} to ${CLUSTER_CONFIG_PATH}"
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cat >> ${CLUSTER_CONFIG_PATH} << EOF
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[mysqld]
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wsrep_cluster_address="gcomm://${MEMBERS}"
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wsrep_node_address=${POD_IP}
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wsrep_node_name=${POD_NAME}.$(hostname -d)
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EOF
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if [ "x${CLUSTER_BOOTSTRAP}" = "xtrue" ]; then
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mysql_install_db --user=mysql --datadir=/var/lib/mysql
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cat > "${BOOTSTRAP_FILE}" << EOF
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DELETE FROM mysql.user ;
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CREATE OR REPLACE USER 'root'@'%' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
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GRANT ALL ON *.* TO 'root'@'%' WITH GRANT OPTION ;
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DROP DATABASE IF EXISTS test ;
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FLUSH PRIVILEGES ;
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EOF
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CLUSTER_INIT_ARGS="${CLUSTER_INIT_ARGS} --init-file=${BOOTSTRAP_FILE}"
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fi
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exec mysqld ${CLUSTER_INIT_ARGS}
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