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背景
Dcoker启动报错经常能看到这个错误提示，这是告诉你linux操作系统的文件描述符设置的和Docker的不匹配，或者是设置的比较小了。
解决方案
linux中一切皆文件。例如一个socket都会用一个文件描述符去表示，所以linux系统文件描述符的大小，对系统是至关重要的，例如高并发的时候，如果文件描述符太小，服务器的并发是上不去的。
要解决可以使用两种方式。
- # sysctl settings are defined through files in
- # /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/.
- #
- # Vendors settings live in /usr/lib/sysctl.d/. # To override a whole file, create a new file with the same in
- # /etc/sysctl.d/ and put new settings there. To override
- # only specific settings, add a file with a lexically later
- # name in /etc/sysctl.d/ and put new settings there. # # For more information, see sysctl.conf(5) and sysctl.d(5).
- fs.file-max =6553600 # 这里按照实际情况填写。
- fs.nr_open = 6553600
- 修改Docker的docker.service文件路径
- /usr/lib/systemd/system/docker.service
- [Unit]
- Description=Docker Application Container Engine
- Documentation=https://docs.docker.com
- BindsTo=containerd.service
- After=network-online.target firewalld.service containerd.service
- Wants=network-online.target
- Requires=docker.socket
- [Service]
- Type=notify
- # the default is not to use systemd for cgroups because the delegate issues still
- # exists and systemd currently does not support the cgroup feature set required
- # for containers run by docker
- ExecStart=/usr/bin/dockerd --exec-opt=native.cgroupdriver=cgroupfs --log-level=warn --log-opt max-size=50M --storage-driver=overlay2 -H fd:// --containerd=/run/containerd/containerd.sock -H unix:///var/run/docker.sock -H tcp://0.0.0.0:900 --data-root=/data1/docker_customized
- ExecReload=/bin/kill -s HUP $MAINPID
- TimeoutSec=0
- RestartSec=2
- Restart=always
- # Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
- # Both the old, and new location are accepted by systemd 229 and up, so using the old location
- # to make them work for either version of systemd.
- StartLimitBurst=3
- # Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
- # Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
- # this option work for either version of systemd.
- StartLimitInterval=60s
- # Having non-zero Limit*s causes performance problems due to accounting overhead
- # in the kernel. We recommend using cgroups to do container-local accounting.
- LimitNOFILE=6553500 # 修改这里
- LimitNPROC=infinity
- LimitCORE=infinity
- # Comment TasksMax if your systemd version does not supports it.
- # Only systemd 226 and above support this option.
- TasksMax=infinity
- # set delegate yes so that systemd does not reset the cgroups of docker containers
- Delegate=yes
- # kill only the docker process, not all processes in the cgroup
- KillMode=process
- [Install]
- WantedBy=multi-user.target
- /usr/lib/systemd/system/containerd.service
- [Unit]
- Description=containerd container runtime
- Documentation=https://containerd.io
- After=network.target
- [Service]
- ExecStartPre=-/sbin/modprobe overlay
- ExecStart=/usr/bin/containerd
- KillMode=process
- Delegate=yes
- LimitNOFILE=6553500 # 修改这里
- # Having non-zero Limit*s causes performance problems due to accounting overhead
- # in the kernel. We recommend using cgroups to do container-local accounting.
- LimitNPROC=infinity
- LimitCORE=infinity
- TasksMax=infinity
- [Install]
- WantedBy=multi-user.target
以上就是docker启动报错205/limit的解决方案的详细内容，更多关于docker启动报错205/limit的资料请关注脚本之家其它相关文章！
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