docker run with -t option lead to "open /dev/ptmx: no such file or directory" message

[shlliu]

Description docker run with -t option lead to "open /dev/ptmx: no such file or directory" message

Steps to reproduce the issue:

1. Run: docker run -it hello-world

Describe the results you received: docker: Error response from daemon: OCI runtime create failed: container_linux.go:345: starting container process caused "process_linux.go:430: container init caused "open /dev/ptmx: no such file or directory"": unknown.

Describe the results you expected:

Additional information you deem important (e.g. issue happens only occasionally): $ ls -l /dev/ptmx crw-rw-rw- 1 root tty 5, 2 8月 26 17:00 /dev/ptmx

$ ls -l /dev/pts total 0 crw--w---- 1 lightdm tty 136, 0 8月 22 16:58 0 crw--w---- 1 lightdm tty 136, 1 8月 22 16:58 1 crw------- 1 admin1 tty 136, 10 8月 26 17:00 10 crw--w---- 1 lightdm tty 136, 2 8月 22 16:58 2 crw--w---- 1 lightdm tty 136, 3 8月 22 16:58 3 crw--w---- 1 lightdm tty 136, 4 8月 22 16:58 4 crw--w---- 1 lightdm tty 136, 5 8月 22 16:58 5 crw--w---- 1 lightdm tty 136, 6 8月 22 16:58 6 crw--w---- 1 lightdm tty 136, 7 8月 22 16:58 7 crw--w---- 1 admin1 tty 136, 8 8月 26 16:55 8 crw--w---- 1 admin1 utmp 136, 9 8月 23 18:24 9

Output of docker version: $ docker version Client: Docker Engine - Community Version: 19.03.1 API version: 1.40 Go version: go1.12.5 Git commit: 74b1e89e8a Built: Thu Jul 25 21:21:35 2019 OS/Arch: linux/amd64 Experimental: false

Server: Docker Engine - Community Engine: Version: 19.03.1 API version: 1.40 (minimum version 1.12) Go version: go1.12.5 Git commit: 74b1e89e8a Built: Thu Jul 25 21:20:09 2019 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.2.6 GitCommit: 894b81a4b802e4eb2a91d1ce216b8817763c29fb runc: Version: 1.0.0-rc8 GitCommit: 425e105d5a03fabd737a126ad93d62a9eeede87f docker-init: Version: 0.18.0 GitCommit: fec3683

(paste your output here)

Output of docker info: $ docker info Client: Debug Mode: false

Server: Containers: 2 Running: 0 Paused: 0 Stopped: 2 Images: 2 Server Version: 19.03.1 Storage Driver: overlay2 Backing Filesystem: extfs Supports d_type: true Native Overlay Diff: false Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: bridge host ipvlan macvlan null overlay Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog Swarm: inactive Runtimes: runc Default Runtime: runc Init Binary: docker-init containerd version: 894b81a4b802e4eb2a91d1ce216b8817763c29fb runc version: 425e105d5a03fabd737a126ad93d62a9eeede87f init version: fec3683 Security Options: apparmor seccomp Profile: default Kernel Version: 4.4.0 Operating System: Ubuntu 16.04.3 LTS OSType: linux Architecture: x86_64 CPUs: 8 Total Memory: 15.56GiB Name: nntc-1684-pcie ID: YMEP:XBUT:HRSU:BINS:25GU:WGVL:NVXP:CM4Z:SESY:T6GL:6YNE:A32B Docker Root Dir: /var/lib/docker Debug Mode: false Registry: https://index.docker.io/v1/ Labels: Experimental: false Insecure Registries: 127.0.0.0/8 Live Restore Enabled: false

WARNING: No swap limit support WARNING: No kernel memory limit support WARNING: No kernel memory TCP limit support

(paste your output here)

Additional environment details (AWS, VirtualBox, physical, etc.): My OS version: $ cat /etc/issue Ubuntu 16.04.3 LTS \n \l

[shlliu]

BTW, adding -v /dev:/dev option can workaround this issue, but I still want to know what exactly caused this issue.

[gdubicki]

For posterity (including possibly the future me...):

I run into this error because I thought that it's a great idea to mount the app code I am developing under the /dev dir with -v $(pwd):/dev. 🤦‍♂️

Don't be like me, mount it under a normal dir like /foobar instead.

[behai-nguyen]

BTW, adding -v /dev:/dev option can workaround this issue, but I still want to know what exactly caused this issue.

shlliu thank you for the info. I am having the same issue with Docker on my Synology DS218 box.

This would not work:

$ sudo docker run -it --network=host -v "/run/docker.sock:/var/run/docker.sock" --rm flask-restx-demo-arm64 bash

But this works:

$ sudo docker run -it --network=host -v /dev:/dev --rm flask-restx-demo-arm64 bash