https://aaronyang0628.github.io/docs/buckup/postgresql/index.htmlPrerequisites alias pgk='kubectl -n database exec deployment/postgresql --' 全量备份所有数据库 pgk pg_dumpall -U postgres > postgresql-full-$(date +%Y%m%d).sql 备份单个数据库 pgk pg_dump -U postgres <dbname> > <dbname>-$(date +%Y%m%d).sql 备份到 PVC 内 pgk sh -c 'pg_dumpall -U postgres > /bitnami/postgresql/backup-$(date +%Y%m%d).sql' 从备份文件恢复 # 全量恢复 cat postgresql-full-20260512.sql | pgk psql -U postgres # 单库恢复（先创建空库） pgk psql -U postgres -c "CREATE DATABASE <dbname>;" cat <dbname>-20260512.sql | pgk psql -U postgres -d <dbname> 定时备份（CronJob） apiVersion: batch/v1 kind: CronJob metadata: name: postgresql-backup namespace: database spec: schedule: "0 3 * * *" jobTemplate: spec: template: spec: containers: - name: backup image: m.daocloud.io/docker.io/bitnami/postgresql:latest command: - sh - -c - | pg_dumpall -U postgres -h postgresql \ > /backup/postgresql-$(date +%Y%m%d%H%M).sql find /backup -name "*.sql" -mtime +7 -delete volumeMounts: - name: backup mountPath: /backup restartPolicy: Never volumes: - name: backup hostPath: path: /data/backups/postgresqlHugoen