Added weekly VACUUM FULL maintenance with cron scheduling for database optimization

Dockerfile

@@ -3,10 +3,19 @@ ARG PG_MAJOR_PREVIOUS=14
 ARG PG_MAJOR=15
 
 FROM timescaledev/timescaledb-ha:pg15-multi as trimmed
-MAINTAINER [email protected]
+LABEL org.opencontainers.image.authors="[email protected]"
 
 USER root
 
+# Install cron for scheduled VACUUM FULL operations
+RUN apt-get update && apt-get install -y cron && rm -rf /var/lib/apt/lists/*
+
+# Add scripts for VACUUM FULL operations
+RUN mkdir -p /var/lib/postgresql/scripts
+ADD scripts/vacuum_full.sh /var/lib/postgresql/scripts/
+ADD scripts/start_cron.sh /var/lib/postgresql/scripts/
+RUN chmod +x /var/lib/postgresql/scripts/*.sh
+
 # Give postgres user the same UID and GID as the old alpine postgres image to simplify migration of existing DB
 RUN usermod -u 70 postgres \
  && groupmod -g 70 postgres \
@@ -78,7 +87,9 @@ ENV PGROOT=/var/lib/postgresql \
     OR_REINDEX_COUNTER=${OR_REINDEX_COUNTER} \
     OR_DISABLE_REINDEX=${OR_DISABLE_REINDEX:-false} \
     POSTGRES_MAX_CONNECTIONS=${POSTGRES_MAX_CONNECTIONS:-50} \
-    OR_DISABLE_AUTO_UPGRADE=${OR_DISABLE_AUTO_UPGRADE:-false}
+    OR_DISABLE_AUTO_UPGRADE=${OR_DISABLE_AUTO_UPGRADE:-false} \
+    # VACUUM FULL cron schedule (if not set, VACUUM FULL is disabled)
+    OR_VACUUM_FULL_CRON_SCHEDULE="${OR_VACUUM_FULL_CRON_SCHEDULE:-}"
 
 WORKDIR /var/lib/postgresql
 EXPOSE 5432 8008 8081

Dockerfile.alpine

@@ -20,7 +20,7 @@ FROM timescaledev/timescaledb-ha:pg15-multi as timescale-ha
 # This still doesn't work as timescale code is compiled against glibc and some references don't match with gcompat
 
 FROM timescale/timescaledb:latest-pg15
-MAINTAINER [email protected]
+LABEL org.opencontainers.image.authors="[email protected]"
 
 ENV GLIBC_VERSION 2.35-r0
 ENV TZ ${TZ:-Europe/Amsterdam}
@@ -29,8 +29,17 @@ ENV POSTGRES_DB ${POSTGRES_DB:-openremote}
 ENV POSTGRES_USER ${POSTGRES_USER:-postgres}
 ENV POSTGRES_PASSWORD ${POSTGRES_PASSWORD:-postgres}
 
-# Add glibc
-RUN apk add gcompat
+# VACUUM FULL cron schedule (if not set, VACUUM FULL is disabled)
+ENV OR_VACUUM_FULL_CRON_SCHEDULE="${OR_VACUUM_FULL_CRON_SCHEDULE:-}"
+
+# Add glibc and cron for scheduled VACUUM FULL operations
+RUN apk add --no-cache gcompat dcron
+
+# Add scripts for VACUUM FULL operations
+RUN mkdir -p /var/lib/postgresql/scripts
+ADD scripts/vacuum_full.sh /var/lib/postgresql/scripts/
+ADD scripts/start_cron.sh /var/lib/postgresql/scripts/
+RUN chmod +x /var/lib/postgresql/scripts/*.sh
 
 
 COPY --from=timescale-ha /usr/lib/postgresql/15/lib/bitcode/postgis-3/ /usr/local/lib/postgresql/bitcode/

or-entrypoint.sh

@@ -377,4 +377,7 @@ if [ -n "$DATABASE_ALREADY_EXISTS" ]; then
     fi
 fi
 
+# Setup and start cron service for VACUUM FULL operations
+/var/lib/postgresql/scripts/start_cron.sh
+
 exec /docker-entrypoint.sh $@

scripts/start_cron.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+# This script sets up and starts the cron service for scheduled database maintenance
+# It handles both Alpine Linux (crond) and Debian/Ubuntu (cron) systems
+
+# Check if VACUUM FULL schedule is set
+if [ -n "${OR_VACUUM_FULL_CRON_SCHEDULE}" ]; then
+  echo "Setting up VACUUM FULL job with schedule: ${OR_VACUUM_FULL_CRON_SCHEDULE}..."
+
+  # Create cron entry
+  CRON_ENTRY="${OR_VACUUM_FULL_CRON_SCHEDULE} /var/lib/postgresql/scripts/vacuum_full.sh"
+  echo "Using cron schedule: ${OR_VACUUM_FULL_CRON_SCHEDULE}"
+
+  if [ -x "$(command -v cron)" ]; then
+    # Debian/Ubuntu (standard cron)
+    echo "Setting up cron job using standard cron..."
+    (crontab -u postgres -l 2>/dev/null || echo "") | echo "$CRON_ENTRY" | crontab -u postgres -
+    echo "VACUUM FULL job has been scheduled using standard cron"
+
+    echo "Starting cron service for scheduled database maintenance..."
+    service cron start
+  elif [ -x "$(command -v crond)" ]; then
+    # Alpine Linux (dcron)
+    echo "Setting up cron job using Alpine's crond (dcron)..."
+    mkdir -p /etc/crontabs
+    echo "$CRON_ENTRY" > /etc/crontabs/postgres
+    chmod 600 /etc/crontabs/postgres
+    echo "VACUUM FULL job has been scheduled using dcron"
+
+    echo "Starting crond service for scheduled database maintenance..."
+    crond -b -L /var/lib/postgresql/cron.log
+  else
+    echo "WARNING: No cron system found. VACUUM FULL will not be automatically scheduled."
+  fi
+else
+  echo "VACUUM FULL is disabled (OR_VACUUM_FULL_CRON_SCHEDULE is not set). Skipping cron service."
+fi

scripts/vacuum_full.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# Log file for vacuum operations
+LOG_FILE="/var/lib/postgresql/vacuum_full.log"
+
+echo "$(date): Starting VACUUM FULL operation" >> "$LOG_FILE"
+
+# Get list of all tables in the database
+TABLES=$(psql -t -c "SELECT schemaname || '.' || tablename FROM pg_tables WHERE schemaname NOT IN ('pg_catalog', 'information_schema')" "${POSTGRES_DB:-postgres}")
+
+# Run VACUUM FULL on each table
+for TABLE in $TABLES; do
+    echo "$(date): Running VACUUM FULL on $TABLE" >> "$LOG_FILE"
+    psql -c "VACUUM FULL $TABLE" "${POSTGRES_DB:-postgres}"
+    echo "$(date): Completed VACUUM FULL on $TABLE" >> "$LOG_FILE"
+done
+
+echo "$(date): VACUUM FULL operation completed" >> "$LOG_FILE"