How to stop running Container, if error response from daemon is: Cannot Kill Container [...] permission denied?

Question

Tough task: Everytime I try to stop or kill a running container, I get permission denied as an error response from Daemon.

I just started learning how to use docker by using a Ubuntu18.04 VM. I was running a container for the first time. I was not able to stop it but at least it was running. Now, after I tried to run another image "furtuas/daisitory:image_available_first_ms", everything got worse. Two containers are running, I can't stop non of them. I tried to restart docker but the containers are still running with the difference that localhost is not working anymore. Maybe it happened bc I ran on the same host like the one before

I am not familiar with docker, ubuntu, terminal etc. I would appreciate detailed answers for beginners

$ docker info
Containers: 2
 Running: 2
 Paused: 0
 Stopped: 0
Images: 8
Server Version: 18.09.1
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host 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: 9754871865f7fe2f4e74d43e2fc7ccd237edcbce
runc version: 96ec2177ae841256168fcf76954f7177af9446eb
init version: fec3683
Security Options:
 apparmor
 seccomp
  Profile: default
Kernel Version: 4.15.0-43-generic
Operating System: Ubuntu 18.04.1 LTS
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 3.83GiB
Name: dai-2
ID: ULKT:IYPB:L6GI:VQWG:FZQX:J6G6:OWOU:DP5M:KQFC:PWBJ:HEMA:VDIT
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Username: icoe
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine

WARNING: No swap limit support




$ docker version
Client:
 Version:           18.09.1
 API version:       1.39
 Go version:        go1.10.6
 Git commit:        4c52b90
 Built:             Wed Jan  9 19:35:31 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.1
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.6
  Git commit:       4c52b90
  Built:            Wed Jan  9 19:02:44 2019
  OS/Arch:          linux/amd64
  Experimental:     false





$ docker images
REPOSITORY                      TAG                        IMAGE ID            CREATED             SIZE
furtuas/daisitory     image_available_first_ms   64b3943856a0        6 days ago          660MB
icoe/dockerimageavailable   first_ms                   64b3943856a0        6 days ago          660MB
dockerimageavailable            latest                     64b3943856a0        6 days ago          660MB
my-maven                        latest                     704b027074fb        6 days ago          660MB
dockerimagedetails              latest                     2da0a7987c2a        6 days ago          643MB
dockerimage                     latest                     af97e6623a8c        6 days ago          643MB
maven                           latest                     3bc97dc2e7ba        3 weeks ago         832MB
java                            8                          d23bdf5b1b1b        2 years ago         643MB





$ docker ps
CONTAINER ID        IMAGE                                                  COMMAND                  CREATED             STATUS              PORTS                    NAMES
66c6c49a95f4        furtuas/daisitory:image_available_first_ms   "java -jar /car-pool…"   3 hours ago         Up 3 hours                                   first_ms_test
8e0646cc95f8        704b027074fb                                           "java -jar /car-pool…"   6 days ago          Up 6 days           0.0.0.0:8080->8080/tcp   container_available





$ docker stop first_ms_test 
Error response from daemon: cannot stop container: first_ms_test: Cannot kill container 66c6c49a95f499abeb62b1c02e7e9b8ce1739709bb2140ba7b1a61094a9d16f7: unknown error after kill: runc did not terminate sucessfully: container_linux.go:387: signaling init process caused "permission denied"
: unknown




$ docker container rm -f first_ms_test 
Error response from daemon: Could not kill running container 66c6c49a95f499abeb62b1c02e7e9b8ce1739709bb2140ba7b1a61094a9d16f7, cannot remove - Cannot kill container 66c6c49a95f499abeb62b1c02e7e9b8ce1739709bb2140ba7b1a61094a9d16f7: unknown error after kill: runc did not terminate sucessfully: container_linux.go:387: signaling init process caused "permission denied"
: unknown

Please help.

$ docker ps -a
CONTAINER ID        IMAGE                                                  COMMAND                  CREATED             STATUS              PORTS                    NAMES
66c6c49a95f4        furtuas/daisitory:image_available_first_ms   "java -jar /car-pool…"   3 hours ago         Up 3 hours                                   first_ms_test
8e0646cc95f8        704b027074fb                                           "java -jar /car-pool…"   6 days ago          Up 6 days           0.0.0.0:8080->8080/tcp   container_available

After logout the VM, still the same response:

$ docker stop 66c6c49a95f4
Error response from daemon: cannot stop container: 66c6c49a95f4: Cannot kill container 66c6c49a95f499abeb62b1c02e7e9b8ce1739709bb2140ba7b1a61094a9d16f7: unknown error after kill: runc did not terminate sucessfully: container_linux.go:387: signaling init process caused "permission denied"
: unknown

Answer 1

I solved it but I am not sure why. I think I solved it by restarting the VM and restart docker with these commands

Flush changes: $ sudo systemctl daemon-reload
Restart Docker: $ sudo systemctl restart docker