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docker日志大小和保存管理

news 2025/4/3 2:30:46

背景：云服务器小磁盘被docker日志占满

docker日志存放位置查看

避免被无感占满，建议进行配置日志选项，可以缩小文件保留大小和保留个数/时间

注意：compress选项

背景：云服务器小磁盘被docker日志占满

docker日志存放位置查看

找一个容器进行inspect，查看该路径下的文件是否占用磁盘大部分空间

[root@sulibao ~]# docker inspect 6424c6863387 | grep LogPath  "LogPath": "/data/docker_data/containers/6424c68633870bf916d981465c0d4e310a76bf999e446502cda4fb2f8e2d988c/6424c68633870bf916d981465c0d4e310a76bf999e446502cda4fb2f8e2d988c-json.log",

以上路径如果daemon.json里没有特殊配置的话一般是在/var/lib/docker下我这是配置的路径

{"registry-mirrors": ["http://hub-mirror.c.163.com"],"data-root": "/data/docker_data",...
}

避免被无感占满，建议进行配置日志选项，可以缩小文件保留大小和保留个数/时间

json-file配置

以 JSON 格式存储，每个日志条目都是一个 JSON 对象，可读性强

{"registry-mirrors": ["http://hub-mirror.c.163.com",],"data-root": "/data/docker_data","max-concurrent-downloads": 10,"live-restore": true,"log-level": "warn","log-driver": "json-file","log-opts": {"max-size": "1000m",    #单个日志文件大小"max-file": "2",    #最大文件数保留"compress": "true"   #是否开启日志归档压缩},...
}
[root@sulibao ~]# docker info | grep LoggingLogging Driver: json-file
WARNING: API is accessible on http://0.0.0.0:2375 without encryption.

local配置

二进制格式存储日志数据，这种存储方式更为紧凑，能更高效地利用磁盘空间

{"registry-mirrors": ["http://hub-mirror.c.163.com",],"data-root": "/data/docker_data","max-concurrent-downloads": 10,"live-restore": true,"log-level": "warn","log-driver": "local","log-opts": {"max-size": "1000m",    #单个日志文件大小"max-file": "2",    #最大文件数保留"compress": "true"    #是否开启日志归档压缩},...
}
[root@sulibao ~]# docker info | grep LoggingLogging Driver: local

none配置

{"registry-mirrors": ["http://hub-mirror.c.163.com",],"data-root": "/data/docker_data","max-concurrent-downloads": 10,"live-restore": true,"log-level": "warn","log-driver": "none",},...
}
[root@sulibao ~]# docker info | grep LoggingLogging Driver: none