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podman
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rootless: Tell the user what was led to the error, not just what it is 

Users coming e.g. from Docker do not always read the manual and
expect podman to not require sudo or uidmap, for them the default
message is not very helpful:

    Error: Cannot connect to the Podman socket, make sure there is a Podman REST API service running.:
    cannot find newuidmap: exec: "newuidmap": executable file not found in $PATH

Adding a bit more context to this would help to nudge them into the
right direction and tell them what to look for in the documentation:

    command required for rootless mode with multiple IDs: exec: "newuidmap": executable file not found in $PATH

Signed-off-by: Andrej Shadura <andrew.shadura@collabora.co.uk>

[NO TESTS NEEDED]
This commit is contained in:
Andrej Shadura 2021-03-23 15:17:24 +01:00
parent 54344d3a64
commit 09e640d1b5
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GPG Key ID: 2526E9EB828A8F35
2 changed files with 3 additions and 3 deletions
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2
pkg/rootless/rootless_linux.go
View File

@ -116,7 +116,7 @@ func tryMappingTool(uid bool, pid int, hostID int, mappings []idtools.IDMap) err
}
path, err := exec.LookPath(tool)
if err != nil {
return errors.Wrapf(err, "cannot find %s", tool)
return errors.Wrapf(err, "command required for rootless mode with multiple IDs")
}
appendTriplet := func(l []string, a, b, c int) []string {

4
troubleshooting.md
View File

@ -203,12 +203,12 @@ Rootless Podman requires the newuidmap and newgidmap programs to be installed.
#### Symptom
If you are running Podman or buildah as a not root user, you get an error complaining about
If you are running Podman or Buildah as a rootless user, you get an error complaining about
a missing newuidmap executable.
```
podman run -ti fedora sh
cannot find newuidmap: exec: "newuidmap": executable file not found in $PATH
command required for rootless mode with multiple IDs: exec: "newuidmap": executable file not found in $PATH
```
#### Solution