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diff --git a/troubleshooting.md b/troubleshooting.md index 167ee14c3..bad9d8102 100644 --- a/troubleshooting.md +++ b/troubleshooting.md @@ -553,3 +553,42 @@ this, use the following command before logging out: `loginctl enable-linger`. To later revert the linger functionality, use `loginctl disable-linger`. LOGINCTL(1), SYSTEMD(1) + +### 23) Containers default detach keys conflict with shell history navigation + +Podman defaults to `ctrl-p,ctrl-q` to detach from a running containers. The +bash and zsh shells default to ctrl-p for the displaying of the previous +command. This causes issues when running a shell inside of a container. + +#### Symptom + +With the default detach key combo ctrl-p,ctrl-q, shell history navigation +(tested in bash and zsh) using ctrl-p to access the previous command will not +display this previous command. Or anything else. Conmon is waiting for an +additional character to see if the user wants to detach from the container. +Adding additional characters to the command will cause it to be displayed along +with the additonal character. If the user types ctrl-p a second time the shell +display the 2nd to last command. + +#### Solution + +The solution to this is to change the default detach_keys. For example in order +to change the defaults to `ctrl-q,ctrl-q` use the `--detach-keys` option. + +``` +podman run -ti --detach-keys ctrl-q,ctrl-q fedora sh +``` + +To make this change the default for all containers, users can modify the +containers.conf file. This can be done simply in your homedir, but adding the +following lines to users containers.conf + +``` +$ cat >> ~/.config/containers/containers.conf < _eof +[engine] +detach_keys="ctrl-q,ctrl-q" +_eof +``` + +In order to effect root running containers and all users, modify the system +wide defaults in /etc/containers/containers.conf |