75 lines
2.4 KiB
Bash
75 lines
2.4 KiB
Bash
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#!/bin/bash
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# verify_postgres_snapshot.sh
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# Verify PostgreSQL backup snapshot remotely using ZFS, pg_verifybackup, and pg_checksums
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set -euo pipefail
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# === CONFIG ===
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REMOTE_HOST="zcluster.technodrome2.sshjunkie.com"
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ZFS_DATASET="pgpool/postgresbackups/db2"
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MOUNT_ROOT="/mnt/pgsnapshot_verify"
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PG_BIN_DIR="/usr/lib/postgresql/16/bin" # adjust if needed on remote host
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LOGFILE="/var/log/pgsnapshot_verify_$(date +%Y%m%d_%H%M%S).log"
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DB_NAME="mastodon_production"
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# === MASTODON ALERTING ===
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MASTODON_TOKEN="rimxBLi-eaJAcwagkmoj6UoW7Lc473tQY0cOM041Euw"
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MASTODON_API="https://chatwithus.live/api/v1/statuses"
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TOOT_ACCOUNT_ID="114386383616633367"
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mastodon_alert() {
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local msg="$1"
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curl -sS -X POST "$MASTODON_API" \
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-H "Authorization: Bearer $MASTODON_TOKEN" \
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--data-urlencode "status=$msg" \
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--data "visibility=direct" \
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--data "in_reply_to_account_id=$TOOT_ACCOUNT_ID" >/dev/null
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}
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# === RUN REMOTELY ===
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echo "📦 Verifying latest snapshot for $ZFS_DATASET on $REMOTE_HOST" | tee "$LOGFILE"
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ssh root@$REMOTE_HOST bash <<EOF
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set -euo pipefail
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LATEST_SNAPSHOT=\$(zfs list -t snapshot -r $ZFS_DATASET -o name -s creation | tail -n 1)
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if [[ -z "\$LATEST_SNAPSHOT" ]]; then
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echo "❌ No snapshot found for $ZFS_DATASET" | tee -a "$LOGFILE"
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exit 1
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fi
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MOUNTPOINT="$MOUNT_ROOT/\${LATEST_SNAPSHOT//\//_}"
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mkdir -p "\$MOUNTPOINT"
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# Clone snapshot for verification
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zfs clone -o mountpoint="\$MOUNTPOINT" "\$LATEST_SNAPSHOT" "${ZFS_DATASET}@verifytemp"
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# Run pg_verifybackup
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if ! "$PG_BIN_DIR/pg_verifybackup" "\$MOUNTPOINT" >> "$LOGFILE" 2>&1; then
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echo "❌ pg_verifybackup failed on snapshot \$LATEST_SNAPSHOT" | tee -a "$LOGFILE"
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zfs destroy "${ZFS_DATASET}@verifytemp"
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exit 2
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fi
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# Optional: pg_checksums
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if "$PG_BIN_DIR/pg_checksums" --check --data-directory="\$MOUNTPOINT" >> "$LOGFILE" 2>&1; then
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echo "✅ pg_checksums passed." | tee -a "$LOGFILE"
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else
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echo "⚠️ pg_checksums failed or not enabled." | tee -a "$LOGFILE"
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fi
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zfs destroy "${ZFS_DATASET}@verifytemp"
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rmdir "\$MOUNTPOINT"
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EOF
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# === ALERT BASED ON SSH EXIT CODE ===
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EXIT_CODE=$?
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if [[ $EXIT_CODE -eq 1 ]]; then
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mastodon_alert "🚨 ZFS PostgreSQL snapshot verification failed: No snapshot found for $ZFS_DATASET on $REMOTE_HOST at $(date)."
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elif [[ $EXIT_CODE -eq 2 ]]; then
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mastodon_alert "🚨 pg_verifybackup failed for snapshot of $ZFS_DATASET on $REMOTE_HOST at $(date)."
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fi
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echo "✅ PostgreSQL remote snapshot verification complete." | tee -a "$LOGFILE"
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exit 0
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