netns: execute command from default namespace from another namespace

Question

I ssh into a linux machine using nets namespace (command below)

ip netns exec NAME_SPACE ssh root@192.168.2.100

From there I want to execute some command(say "ifconfig") in default name space from this.

In which default namespace do you want to run your command : the originating host from which you launched "ip netns ..." or on the remote machine on which you are connected with "ssh" ? — Rachid K., Feb 05 '21 at 06:34

Rachid K. · Accepted Answer · 2021-02-09T07:18:12.710

3

If you know that a process is running in the default network namespace (typically process number 1), you can use tools like nsenter to run a command in the same network namespace (-n option):

# nsenter -t 1 -n ifconfig

edited Feb 09 '21 at 07:18

answered Feb 09 '21 at 06:36

Rachid K.

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netns: execute command from default namespace from another namespace

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