Project ID: 21317


an effort to test usernamespace uid/gid mapping on centos7 without forcing an upgrade of shadow-utils. This builds from a fork of fedora shadow-utils, managed here.

This is a workaround to BZ1498628.

Installation Instructions

curl -o /etc/yum.repos.d/vbatts-shadow-utils-newxidmap-epel-7.repo https://copr.fedorainfracloud.org/coprs/vbatts/shadow-utils-newxidmap/repo/epel-7/vbatts-shadow-utils-newxidmap-epel-7.repo yum install -y shadow-utils46-newxidmap

Also, to actually use user namespaces on centos7 host, you'll have to increase the default allowed user namespaces:

echo "user.max_user_namespaces=28633" > /etc/sysctl.d/userns.conf sysctl -p /etc/sysctl.d/userns.conf

Since the adduser will not create the /etc/sub{u,g}id files, you'll need to do this for users intending to use this:

adduser testuser echo "testuser:100000:65536" > /etc/subuid echo "testuser:100000:65536" > /etc/subgid

additional packages for non-root containers

On centos7/RHEL7 you'll need slirp4netns to get podman and buildah to work as non-root user. That package is currently provided here as well, for convenience sake.

yum install slirp4netns


Active Releases

The following unofficial repositories are provided as-is by owner of this project. Contact the owner directly for bugs or issues (IE: not bugzilla).

Release Architectures Repo Download
Epel for CentOS 7 x86_64 (0)* Epel for CentOS 7 (3935 downloads)

* Total number of packages downloaded in the last seven days.