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guide 9 篇（quick-start/first-site/sso/troubleshooting/tunnel-usage/waf-usage/waf-ip-group-expr/credits/index）、deployment 7 篇（deployment/server/agent/relay/openflared/upgrade/index）、reference 3 篇（configuration/cli/index）、design 5 篇（architecture/agent-design/tunnel-design/waf-design/index）全部按中文最新版重写同步；waf-usage/waf-design 按新版 DAG 模型重写；修复 reference 中文锚点链接；vitepress 构建 43 个英文页面全绿
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Upgrade & Maintenance
You will learn: how to upgrade the Server and Agent, how to clean up observability data, and which verification commands to run before and after maintenance.
Before upgrading, confirm the current active version, the most recent Agent apply result, and the DB backup policy. In production, don't upgrade while a config release, a large-scale Agent reconnect, or a DB migration is in progress.
Server Upgrade
Pull the latest image and upgrade:
docker compose pull
docker compose up
For source deployments, restart the Server and confirm the logs show no DB migration or startup errors.
Agent Upgrade
The Agent only caches runtime config and state files locally — no business data. To upgrade, directly pull the latest image and recreate the container. For specific deployment commands and install methods, see Access Agent.