troubleshooting.md


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![PODMAN logo](logo/podman-logo-source.svg)

# Troubleshooting

## A list of common issues and solutions for Podman

---
### 1) No such image or Bare keys cannot contain ':'

When doing a `podman pull` or `podman build` command and a "common" image can not be pulled,
it is likely that the `/etc/containers/registries.conf` file is either not installed or possibly
misconfigured.

#### Symptom

```console
$ sudo podman build -f Dockerfile
STEP 1: FROM alpine
error building: error creating build container: no such image "alpine" in registry: image not known
```

or

```console
$ sudo podman pull fedora
error pulling image "fedora": unable to pull fedora: error getting default registries to try: Near line 9 (last key parsed ''): Bare keys cannot contain ':'.
```

#### Solution

  * Verify that the `/etc/containers/registries.conf` file exists.  If not, verify that the skopeo-containers package is installed.
  * Verify that the entries in the `[registries.search]` section of the /etc/containers/registries.conf file are valid and reachable.
    *  i.e. `registries = ['registry.fedoraproject.org', 'quay.io', 'registry.access.redhat.com']`

---
### 2) http: server gave HTTP response to HTTPS client

When doing a Podman command such as `build`, `commit`, `pull`, or `push` to a registry,
tls verification is turned on by default.  If authentication is not used with
those commands, this error can occur.

#### Symptom

```console
$ sudo podman push alpine docker://localhost:5000/myalpine:latest
Getting image source signatures
Get https://localhost:5000/v2/: http: server gave HTTP response to HTTPS client
```

#### Solution

By default tls verification is turned on when communicating to registries from
Podman.  If the registry does not require authentication the Podman commands
such as `build`, `commit`, `pull` and `push` will fail unless tls verification is turned
off using the `--tls-verify` option.  **NOTE:** It is not at all recommended to
communicate with a registry and not use tls verification.

  * Turn off tls verification by passing false to the tls-verification option.
  * I.e. `podman push --tls-verify=false alpine docker://localhost:5000/myalpine:latest`
---