今天我遇到了 docker 的問題,它停止了並且無法啟動它
systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Tue 2020-01-28 09:59:03 +0330; 1min 51s ago
Docs: https://docs.docker.com
Process: 2327 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (code=exited, status=205/LIMITS)
Main PID: 2327 (code=exited, status=205/LIMITS)
Jan 28 09:59:03 example.com systemd[1]: Starting Docker Application Container Engine...
Jan 28 09:59:03 example.com systemd[1]: docker.service: main process exited, code=exited, status=205/LIMITS
Jan 28 09:59:03 example.com systemd[1]: Stopped Docker Application Container Engine.
Jan 28 09:59:03 example.com systemd[1]: Unit docker.service entered failed state.
Jan 28 09:59:03 example.com systemd[1]: docker.service failed.
我看到我status=205/LIMITS
記得 3 天前我更改了ulimit
配置
# /etc/security/limits.d/custom.conf
root soft nofile 1000000
root hard nofile 1000000
* soft nofile 1000000
* hard nofile 1000000
# /etc/sysctl.conf
fs.file-max = 1000000
fs.nr_open = 1000000
我將fd增加到100萬,撤銷更改後docker啟動成功
這裡到底有什麼問題?
答案1
status=205/LIMITS
表示這些限制之一LimitCPU=, LimitFSIZE=, LimitDATA=, LimitSTACK=, LimitCORE=, LimitRSS=, LimitNOFILE=, LimitAS=, LimitNPROC=, LimitMEMLOCK=, LimitLOCKS=, LimitSIGPENDING=, LimitMSGQUEUE=, LimitNICE=, LimitRTPRIO=, LimitRTTIME=
我不確定您的作業系統版本,但舉一個 Ubuntu 16 的範例,/etc/systemd/system/docker.service.d/customexec.conf
如果以下內容不存在,請建立此檔案。
[Service]
LimitNOFILE=1000000
重新載入systemctl daemon-reload
docker 軟體包設定的限制高於我們的新限制,因此該進程無法啟動。因此,如果上述選項不適合您,您可以嘗試以下操作。
sysctl -w fs.nr_open=1048576