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Add CNI rootless networking troubleshooting for v2.2.1

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A CNI container image is required for rootless networking
in V2.2.1 (RHEL 8.3.1) and through v3.0.1.  Add a note in the
troubleshooting guide with a pointer to the documenation
for that.

Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>
This commit is contained in:
TomSweeneyRedHat
2021-06-21 18:25:38 -04:00
parent 793063e086
commit 6d37e03485
1 changed files with 21 additions and 1 deletions
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22
troubleshooting.md
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@ -156,7 +156,7 @@ When rootless Podman attempts to execute a container on a non exec home director
#### Symptom
If you are running Podman or buildah on a home directory that is mounted noexec,
If you are running Podman or Buildah on a home directory that is mounted noexec,
then they will fail. With a message like:
```
@ -726,3 +726,23 @@ And then re-add the connection (removing the old one if necessary):
And now this should work:
`podman-remote info`
---
### 28) Rootless CNI networking fails in RHEL with Podman v2.2.1 to v3.0.1.
A failure is encountered when trying to use networking on a rootless
container in Podman v2.2.1 through v3.0.1 on RHEL. This error does not
occur on other Linux Distributions.
#### Symptom
A rootless container is created using a CNI network, but the `podman run` command
returns an error that an image must be built.
#### Solution
In order to use a CNI network in a rootless container on RHEL,
an Infra container image for CNI-in-slirp4netns must be created. The
instructions for building the Infra container image can be found for
v2.2.1 [here](https://github.com/containers/podman/tree/v2.2.1-rhel/contrib/rootless-cni-infra),
and for v3.0.1 [here](https://github.com/containers/podman/tree/v3.0.1-rhel/contrib/rootless-cni-infra).