kopia lustrzana https://github.com/kartoza/docker-postgis
77 wiersze
2.3 KiB
Bash
Executable File
77 wiersze
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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source /scripts/env-data.sh
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# This script will setup slave instance to use standby replication
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# Adapted from https://github.com/DanielDent/docker-postgres-replication
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# To set up replication
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if [[ ${RUN_AS_ROOT} =~ [Ff][Aa][Ll][Ss][Ee] ]];then
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function START_COMMAND() {
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PARAM=$1
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gosu "${USER_NAME}" bash -c "$1"
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}
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else
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function START_COMMAND() {
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PARAM=$1
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su postgres -c "$1"
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}
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fi
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create_dir "${WAL_ARCHIVE}"
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if [[ "$WAL_LEVEL" == 'replica' && "${REPLICATION}" =~ [Tt][Rr][Uu][Ee] ]]; then
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# No content yet - but this is a slave database
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if [ -z "${REPLICATE_FROM}" ]; then
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echo "You have not set REPLICATE_FROM variable."
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echo "Specify the master address/hostname in REPLICATE_FROM and REPLICATE_PORT variable."
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exit 1
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fi
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if [[ "${PROMOTE_MASTER}" =~ [Ff][Aa][Ll][Ss][Ee] ]];then
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until START_COMMAND "/usr/lib/postgresql/${POSTGRES_MAJOR_VERSION}/bin/pg_isready -h ${REPLICATE_FROM} -p ${REPLICATE_PORT}"
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do
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echo -e "[Entrypoint] \e[1;31m Waiting for master to ping... \033[0m"
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sleep 1s
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done
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if [[ "$DESTROY_DATABASE_ON_RESTART" =~ [Tt][Rr][Uu][Ee] ]]; then
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echo -e "[Entrypoint] \e[1;31m Get initial database from master \033[0m"
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configure_replication_permissions
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if [ -f "${DATADIR}/backup_label.old" ]; then
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echo -e "[Entrypoint] \e[1;31m PG Basebackup already exists so proceed to start the DB \033[0m"
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else
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streaming_replication
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fi
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fi
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else
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if [ ! -f "${DATADIR}/backup_label.old" ]; then
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echo "Streaming replication hasn't been started yet"
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exit 1
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else
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if [[ ${RUN_AS_ROOT} =~ [Ff][Aa][Ll][Ss][Ee] ]];then
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chown -R "${USER_NAME}":"${DB_GROUP_NAME}" /var/run/postgresql
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START_COMMAND "/etc/init.d/postgresql start ${POSTGRES_MAJOR_VERSION}"
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else
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START_COMMAND "/etc/init.d/postgresql start ${POSTGRES_MAJOR_VERSION}"
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fi
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STANDBY_MODE=$(START_COMMAND "${DATA_DIR_CONTROL} $DATADIR" | grep "Database cluster state:")
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if [[ "$STANDBY_MODE" == *"in archive recovery"* ]]; then
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START_COMMAND "${NODE_PROMOTION} promote -D ${DATADIR}"
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fi
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echo -e "\e[32m [Entrypoint] Replicant has been promoted to master, please shut down \e[1;31m pg-master \033[0m"
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kill_postgres
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fi
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fi
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#end main if
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fi
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