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dockerd-rootless-setuptool.sh nsenter: nsenter: no namespace specified #51602

Description

@AkihiroSuda

Description

dockerd-rootless-setuptool.sh nsenter doesn't work:

$ dockerd-rootless-setuptool.sh nsenter
nsenter: no namespace specified

Reproduce

  1. dockerd-rootless-setuptool.sh install
  2. dockerd-rootless-setuptool.sh nsenter

Expected behavior

Same as containerd-rootless-setuptool.sh nsenter (https://github.com/containerd/nerdctl/blob/main/extras/rootless/containerd-rootless-setuptool.sh)

suda@lima-default:~$ containerd-rootless-setuptool.sh nsenter
root@lima-default:~# ls -l /proc/self/ns
total 0
lrwxrwxrwx 1 root root 0 Nov 27 12:02 cgroup -> 'cgroup:[4026531835]'
lrwxrwxrwx 1 root root 0 Nov 27 12:02 ipc -> 'ipc:[4026531839]'
lrwxrwxrwx 1 root root 0 Nov 27 12:02 mnt -> 'mnt:[4026532473]'
lrwxrwxrwx 1 root root 0 Nov 27 12:02 net -> 'net:[4026531833]'
lrwxrwxrwx 1 root root 0 Nov 27 12:02 pid -> 'pid:[4026531836]'
lrwxrwxrwx 1 root root 0 Nov 27 12:02 pid_for_children -> 'pid:[4026531836]'
lrwxrwxrwx 1 root root 0 Nov 27 12:02 time -> 'time:[4026531834]'
lrwxrwxrwx 1 root root 0 Nov 27 12:02 time_for_children -> 'time:[4026531834]'
lrwxrwxrwx 1 root root 0 Nov 27 12:02 user -> 'user:[4026532472]'
lrwxrwxrwx 1 root root 0 Nov 27 12:02 uts -> 'uts:[4026531838]'

docker version

Client: Docker Engine - Community
 Version:           29.0.4
 API version:       1.52
 Go version:        go1.25.4
 Git commit:        3247a5a
 Built:             Mon Nov 24 21:59:48 2025
 OS/Arch:           linux/arm64
 Context:           rootless

Server: Docker Engine - Community
 Engine:
  Version:          29.0.4
  API version:      1.52 (minimum version 1.44)
  Go version:       go1.25.4
  Git commit:       4612690
  Built:            Mon Nov 24 21:59:48 2025
  OS/Arch:          linux/arm64
  Experimental:     false
 containerd:
  Version:          v2.1.5
  GitCommit:        fcd43222d6b07379a4be9786bda52438f0dd16a1
 runc:
  Version:          1.3.3
  GitCommit:        v1.3.3-0-gd842d771
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0
 rootlesskit:
  Version:          2.3.5
  ApiVersion:       1.1.1
  NetworkDriver:    pasta
  StateDir:         /run/user/501/dockerd-rootless

docker info

Client: Docker Engine - Community
 Version:    29.0.4
 Context:    rootless
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.30.0
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.40.3
    Path:     /usr/libexec/docker/cli-plugins/docker-compose
  model: Docker Model Runner (Docker Inc.)
    Version:  v1.0.2
    Path:     /usr/libexec/docker/cli-plugins/docker-model

Server:
 Containers: 4
  Running: 0
  Paused: 0
  Stopped: 4
 Images: 2
 Server Version: 29.0.4
 Storage Driver: overlayfs
  driver-type: io.containerd.snapshotter.v1
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 CDI spec directories:
  /etc/cdi
  /var/run/cdi
 Swarm: inactive
 Runtimes: runc io.containerd.runc.v2
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: fcd43222d6b07379a4be9786bda52438f0dd16a1
 runc version: v1.3.3-0-gd842d771
 init version: de40ad0
 Security Options:
  seccomp
   Profile: builtin
  rootless
  cgroupns
 Kernel Version: 6.17.0-6-generic
 Operating System: Ubuntu 25.10
 OSType: linux
 Architecture: aarch64
 CPUs: 4
 Total Memory: 3.808GiB
 Name: lima-docker
 ID: 147bb958-7325-4e88-b0b4-2c315ca0e042
 Docker Root Dir: /home/suda.linux/.local/share/docker
 Debug Mode: false
 Experimental: false
 Insecure Registries:
  ::1/128
  127.0.0.0/8
 Live Restore Enabled: false
 Firewall Backend: iptables

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