Docker 部署Nginx 访问日志时间不正确的解决方式
在运营网站的过程中，始终没有太把日志当回事。虽然开启了日志记录，不过没有仔细的分析过日志。今天心血来潮看日志时发现记录的时间要比服务器的时间少8个小时。 8个小时，这是一个比较特殊的数字。我们知道 UTC 时区是标准的世界通用时区，而UTC+8 是比世界通用时间快8个小时的时区，而我们正好是在这个时区的。 我的网站是使用Docker+Nginx部署的，因此这里推断Docker使用的时区可能是UTC。而我们的服务器所在的时区是比其快8小时的。 为了验证我们的猜想，使用如下命令进入docker 容器进行查看
$ docker exec -it nginx bash
进入容器之后，执行date命令，显示如下结果：
很明显，docker容器的时区是UTC。知道了问题的所在，接下来就是校正docker容器的时区。网上目前基本上就三种方式：
- 共享主机的localtime
- 复制主机的localtime
- 创建自定义的dockerfile
我这里使用的是第一种方式，共享主机的localtime。我是使用的docker-compse。所以直接在配置文件中新增一行文件映射即可
version: '3'
services:
web:
...
volumes:
...
- /etc/localtime:/etc/localtime
...
...
然后重新构建web镜像，并启动容器
$ docker-compose up web
这之后 nginx 再记录的日志的时间就和服务器同步了。
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