带有构建/运行/等的 Docker 命令“打开的文件太多”

Question

我在服务器机器上安装了 Docker（使用 Ubuntu 16.04），但尝试运行任何命令时，我收到此错误：

“来自守护进程的错误响应：Get https://registry-1.docker.io/v2/: dial tcp:lookup registry-1.docker.io: too many open files”

请问，谁知道如何解决这个问题？

码头工人信息：

Containers: 18
Running: 0
 Paused: 0
 Stopped: 18
Images: 4
Server Version: 17.03.0-ce
Storage Driver: aufs
 Root Dir: /var/lib/docker/aufs
 Backing Filesystem: extfs
 Dirs: 76
 Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-ini
containerd version: 977c511eda0925a723debdc94d09459af49d082a
runc version: a01dafd48bc1c7cc12bdb01206f9fea7dd6feb70
init version: 949e6fa
Security Options:
 apparmor
 seccomp
  Profile: default
Kernel Version: 4.4.0-59-generic
Operating System: Ubuntu 16.04 LTS
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 1.953 GiB
Name: web.renderdeal.com
ID: LXNZ:I6HH:ZVBB:KS3V:3WCT:ADWY:C2MZ:QJ37:VZUU:EZ6T:PYWO:66WQ
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Username: animarender
Registry: https://index.docker.io/v1/
WARNING: No swap limit support
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

/Docker 信息

码头工人版本

Client:
 Version:      17.03.0-ce
 API version:  1.26
 Go version:   go1.7.5
 Git commit:   60ccb22
 Built:        Thu Feb 23 11:02:43 2017
 OS/Arch:      linux/amd64


Server:
 Version:      17.03.0-ce
 API version:  1.26 (minimum version 1.12)
 Go version:   go1.7.5
 Git commit:   60ccb22
 Built:        Thu Feb 23 11:02:43 2017
 OS/Arch:      linux/amd64
 Experimental: false

/docker 版本

Answer 1

考虑到 Docker 状态似乎没问题，请检查问题是否在您身边（如 this ticket）

让我们检查一下当前打开的文件

lsof | grep "rclone" | wc -l
returns 6458

现在，检查当前的 ulimit

ulimit -n
returns 1024

将其设置为 9000 并再次检查

ulimit -n 9000 && ulimit -n
returns 9000

要使ulimit 更持久，您可以编辑/etc/security/limits.conf
并添加：

* soft nofile 9000 + reboot

或将其写入您用户的.bashrc