Container Tips

• How to install ping utility inside container ?
• How to allow continers to execute ping ?
• Error - “/” is not a shared mount

How to install ping utility inside container ?

apt-get update
apt-get install iputils-ping

## fedora
dnf install iputils

How to allow continers to execute ping ?

Run container with additional capabilities.

$ sudo podman run --cap-add net_raw --cap-add net_admin -it ubuntu bash

Error - “/” is not a shared mount

ERROR on rootless mode

$ podman ps
WARN[0000] "/" is not a shared mount, this could cause issues or missing mounts with rootless containers
Error: cannot setup namespace using newuidmap: exit status 1

resolve the rootless mode problem

sudo chmod 4755 /usr/bin/newgidmap
sudo chmod 4755 /usr/bin/newuidmap