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Diffstat (limited to 'rootless.md')
| -rw-r--r-- | rootless.md | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/rootless.md b/rootless.md index 7d5db3868..8cccb86eb 100644 --- a/rootless.md +++ b/rootless.md @@ -6,14 +6,17 @@ Contributors are more than welcomed to help with this work. If you decide to ca * Podman can not create containers that bind to ports < 1024. * The kernel does not allow processes without CAP_NET_BIND_SERVICE to bind to low ports. -* “How To” documentation is in patchy at best. +* “How To” documentation is patchy at best. * If /etc/subuid and /etc/subgid are not setup for a user, then podman commands can easily fail * This can be a big issue on machines using Network Based Password information (FreeIPA, Active Directory, LDAP) * We are working to get support for NSSWITCH on the /etc/subuid and /etc/subgid files. * No cgroup V1 Support * cgroup V1 does not safely support cgroup delegation. - * cgroup V2 is available on Fedora 29 and later and other Linux distributions. + * However, cgroup V2 provides cgroup delegation and is available on Fedora starting with version 29 and other Linux distributions. +* Some systemd's unit configuration options do not work in the rootless container + * systemd fails to apply several options and failures are silently ignored (e.g. CPUShares, MemoryLimit). + * Use of certain options will cause service startup failures (e.g. PrivateNetwork). * Can not share container images with CRI-O or other users * Difficult to use additional stores for sharing content * Does not work on NFS or parallel filesystem homedirs (e.g. [GPFS](https://www.ibm.com/support/knowledgecenter/en/SSFKCN/gpfs_welcome.html)) @@ -24,7 +27,6 @@ can easily fail * Can not use overlayfs driver, but does support fuse-overlayfs * Ubuntu supports non root overlay, but no other Linux distros do. * Only other supported driver is VFS. -* No KATA Container support * No CNI Support * CNI wants to modify IPTables, plus other network manipulation that requires CAP_SYS_ADMIN. * There is potential we could probably do some sort of blacklisting of the relevant plugins, and add a new plugin for rootless networking - slirp4netns as one example and there may be others |