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https://github.com/wowlikon/LiB.git
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78 lines
2.8 KiB
Bash
78 lines
2.8 KiB
Bash
#!/bin/sh
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set -e
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echo "=== Настройка репликации ==="
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echo "Этот узел: NODE_ID=${NODE_ID}"
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echo "Удаленный хост: ${REMOTE_HOST}"
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echo "Ждем локальную базу..."
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sleep 10
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until PGPASSWORD="${POSTGRES_PASSWORD}" psql -h db -U "${POSTGRES_USER}" -d "${POSTGRES_DB}" -c '\q' 2>/dev/null; do
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echo "Локальная база не готова, ждем..."
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sleep 2
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done
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echo "Локальная база готова"
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echo "Настройка генераторов ID (NODE_ID=${NODE_ID})..."
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PGPASSWORD="${POSTGRES_PASSWORD}" psql -h db -U "${POSTGRES_USER}" -d "${POSTGRES_DB}" <<EOF
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DO \$\$
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DECLARE
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r RECORD;
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BEGIN
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FOR r IN
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SELECT table_schema, table_name, column_name
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FROM information_schema.columns
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WHERE is_identity = 'YES'
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AND table_schema = 'public'
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LOOP
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EXECUTE format(
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'ALTER TABLE %I.%I ALTER COLUMN %I SET GENERATED BY DEFAULT AS IDENTITY (START WITH %s INCREMENT BY 2)',
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r.table_schema, r.table_name, r.column_name, ${NODE_ID}
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);
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RAISE NOTICE 'Настроен ID для %.%', r.table_name, r.column_name;
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END LOOP;
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END \$\$;
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EOF
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echo "Ждем удаленный хост ${REMOTE_HOST}:${REMOTE_PORT}..."
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TIMEOUT=300
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ELAPSED=0
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while ! PGPASSWORD="${POSTGRES_PASSWORD}" psql -h "${REMOTE_HOST}" -p ${REMOTE_PORT} -U "${POSTGRES_USER}" -d "${POSTGRES_DB}" -c '\q' 2>/dev/null; do
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sleep 5
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ELAPSED=$((ELAPSED + 5))
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if [ $ELAPSED -ge $TIMEOUT ]; then
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echo "Таймаут ожидания удаленного хоста. Репликация НЕ настроена."
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echo "Вы можете запустить этот скрипт вручную позже:"
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echo "docker compose restart replication-setup"
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exit 0
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fi
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echo "Удаленный хост недоступен, ждем... (${ELAPSED}s/${TIMEOUT}s)"
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done
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echo "Удаленный хост доступен"
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EXISTING=$(PGPASSWORD="${POSTGRES_PASSWORD}" psql -h db -U "${POSTGRES_USER}" -d "${POSTGRES_DB}" -tAc "SELECT COUNT(*) FROM pg_subscription WHERE subname = 'sub_from_remote';")
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if [ "$EXISTING" -gt 0 ]; then
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echo "Подписка уже существует, пропускаем создание"
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else
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echo "Создаем подписку на удаленный хост..."
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PGPASSWORD="${POSTGRES_PASSWORD}" psql -h db -U "${POSTGRES_USER}" -d "${POSTGRES_DB}" <<EOF
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CREATE SUBSCRIPTION sub_from_remote
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CONNECTION 'host=${REMOTE_HOST} port=${REMOTE_PORT} user=${POSTGRES_USER} password=${POSTGRES_PASSWORD} dbname=${POSTGRES_DB}'
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PUBLICATION all_tables_pub
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WITH (
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origin = none
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);
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EOF
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echo "Подписка создана!"
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fi
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echo ""
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echo "Репликация настроена!"
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echo "Этот узел (${NODE_ID}) теперь синхронизирован с ${REMOTE_HOST}"
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