60 lines
2.4 KiB
Bash
Executable file
60 lines
2.4 KiB
Bash
Executable file
#!/bin/bash
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#
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# This is an entrypoint that runs the MySQL server in the 'slave' mode.
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#
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export_vars=$(cgroup-limits); export $export_vars
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source ${CONTAINER_SCRIPTS_PATH}/common.sh
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set -eu
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# Just run normal server if the data directory is already initialized
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if [ -d "${MYSQL_DATADIR}/mysql" ]; then
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exec /usr/bin/run-mysqld "$@"
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fi
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export MYSQL_RUNNING_AS_SLAVE=1
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[ -f ${CONTAINER_SCRIPTS_PATH}/validate_replication_variables.sh ] && source ${CONTAINER_SCRIPTS_PATH}/validate_replication_variables.sh
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# Generate the unique 'server-id' for this master
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export MYSQL_SERVER_ID=$(server_id)
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log_info "The 'slave' server-id is ${MYSQL_SERVER_ID}"
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# Process the MySQL configuration files
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envsubst < ${CONTAINER_SCRIPTS_PATH}/my-base.cnf.template > /etc/my.cnf.d/base.cnf
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envsubst < ${CONTAINER_SCRIPTS_PATH}/my-paas.cnf.template > /etc/my.cnf.d/paas.cnf
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envsubst < ${CONTAINER_SCRIPTS_PATH}/my-slave.cnf.template > /etc/my.cnf.d/slave.cnf
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envsubst < ${CONTAINER_SCRIPTS_PATH}/my-repl-gtid.cnf.template > /etc/my.cnf.d/repl-gtid.cnf
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envsubst < ${CONTAINER_SCRIPTS_PATH}/my-tuning.cnf.template > /etc/my.cnf.d/tuning.cnf
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# Initialize MySQL database and wait for the MySQL master to accept
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# connections.
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initialize_database "$@"
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wait_for_mysql_master
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# Get binlog file and position from master
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STATUS_INFO=$(mysql --host "$MYSQL_MASTER_SERVICE_NAME" "-u${MYSQL_MASTER_USER}" "-p${MYSQL_MASTER_PASSWORD}" replication -e 'SELECT gtid from replication limit 1\G')
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GTID_VALUE=$(echo "$STATUS_INFO" | grep 'gtid:' | head -n 1 | sed -e 's/^\s*gtid: //')
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# checking STATUS_INFO here because empty GTID_VALUE is valid value
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if [ -z "${STATUS_INFO}" ] ; then
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echo "Could not read GTID value from master"
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exit 1
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fi
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mysql $mysql_flags <<EOSQL
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STOP SLAVE;
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SET GLOBAL gtid_slave_pos = "${GTID_VALUE}";
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CHANGE MASTER TO MASTER_HOST='${MYSQL_MASTER_SERVICE_NAME}',MASTER_USER='${MYSQL_MASTER_USER}', MASTER_PASSWORD='${MYSQL_MASTER_PASSWORD}', MASTER_USE_GTID=slave_pos;
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START SLAVE;
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EOSQL
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log_info 'Sourcing post-init.sh ...'
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[ -f ${CONTAINER_SCRIPTS_PATH}/post-init.sh ] && source ${CONTAINER_SCRIPTS_PATH}/post-init.sh
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# Restart the MySQL server with public IP bindings
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shutdown_local_mysql
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unset_env_vars
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log_volume_info $MYSQL_DATADIR
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log_info 'Running final exec -- Only MySQL server logs after this point'
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exec ${MYSQL_PREFIX}/libexec/mysqld --defaults-file=$MYSQL_DEFAULTS_FILE \
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--report-host=$(hostname -i) "$@" 2>&1
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