Questions tagged [unshare]
6 questions
4
votes
0 answers
unshare network with loopback enabled
To run tests on the development build of my program I need to isolate it from the network.
The build still needs access to loopback (127.0.0.1) though.
I tried using unshare -c -n but the loopback interface is down by default.
Using…
Kitsune
- 117
- 5
3
votes
0 answers
Can not access folder after chown with podman unshare
I have a rootless setup (podman is running in user space and the container I'm starting is also rootless. Now I wan't to mount a volume. To do so I'm using podman unshare chown but after executing this, I can not access the folder anymore
The…
PascalTurbo
- 2,189
- 3
- 24
- 41
1
vote
0 answers
How to debug `podman unshare` commands / Podman permission issues?
I understand that podman unshare can be used to properly set the permissions on unprivileged containers.
So podman unshare chown 1234:1234 -R /home/user/volume can be used to set the volume to the properly mapped ids.
But I'm getting permission…
alexanderadam
- 415
- 6
- 17
0
votes
0 answers
linux: setguid() in new user namespace
My initial task: start a bunch of processes in separate network namespace (with lo 127.0.0.1 interface only and no one listening any ports). So I use:
unshare -n -r bash -c -x myscript.sh
I need -r because of -n: you can't manage your "new network"…
pavelkolodin
- 2,859
- 3
- 31
- 74
0
votes
1 answer
file access after unshare mount namespace
I`ll be glad to get an explanation how unshar mount namespace works
for the following code:
unshare (mount_ns)
int pid = fork()
if (pid ==0)
{
makedir("myDir");
mount("path", "myDir", 0);
int fd = open("myDir/myFile.txt", O_CREATE|O_RDWR);
…
YAKOVM
- 9,805
- 31
- 116
- 217
0
votes
1 answer
Tmux session does not always open with expected mount bindings
I want to run unshare, mount a few directories, and run a tmux session in the new mount namespace. Here is my setup
$ cat run
#!/bin/bash
mount --bind ~/a ~/b
tmux
$ unshare -r --mount ~/run
When I run this command, I get dropped into the tmux…
Hufflet
- 73
- 5