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Bug 2083997 - catatonit not found when starting pod (podman 4.0 under RHEL 8.6)
Summary: catatonit not found when starting pod (podman 4.0 under RHEL 8.6)
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: podman
Version: 8.6
Hardware: x86_64
OS: Linux
unspecified
high
Target Milestone: rc
: ---
Assignee: Valentin Rothberg
QA Contact: Yuhui Jiang
URL:
Whiteboard:
Depends On:
Blocks: 2100143
TreeView+ depends on / blocked
 
Reported: 2022-05-11 07:49 UTC by Miroslav Hostinsky
Modified: 2023-03-10 12:01 UTC (History)
14 users (show)

Fixed In Version: container-tools-rhel8-8060020220615093047.3b538bd8 podman-4.1.1-1.module+el8.6.0+15659+f3ff693b
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
: 2100143 (view as bug list)
Environment:
Last Closed: 2022-11-08 09:15:45 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github containers podman pull 14232 0 None Merged [BZ #2083997] pod: build pause image in custom user NS 2022-06-14 21:03:40 UTC
Github containers podman pull 14280 0 None Merged [v4.1] [BZ #2083997] pod: build pause image in custom user NS 2022-06-14 21:03:40 UTC
Red Hat Issue Tracker RHELPLAN-121680 0 None None None 2022-05-11 08:04:15 UTC
Red Hat Product Errata RHSA-2022:7457 0 None None None 2022-11-08 09:16:34 UTC

Description Miroslav Hostinsky 2022-05-11 07:49:02 UTC 
Description of problem:

Unable to start container when running within pod

Version-Release number of selected component (if applicable):

podman-4.0.2-6.module+el8.6.0+14877+f643d2d6.x86_64
redhat-release-8.6-0.1.el8.x86_64

Steps to Reproduce:

# podman pod create --name pokus && podman run -it --rm --pod pokus alpine sh
926ab05b5645a351002a08418821594718fd9e8a5ff5172f573881d9798e773d
ERRO[0003] Starting some container dependencies
ERRO[0003] "runc: container_linux.go:380: starting container process caused: exec: \"/catatonit\": stat /catatonit: no such file or directory: OCI runtime attempted to invoke a command that was not found"
Error: error starting some containers: internal libpod error

Additional info:

It works when executed with /catatonit in pod

# podman pod create --name pokus -v /usr/libexec/catatonit/catatonit:/catatonit && podman run -it --rm --pod pokus alpine id
4f6222d18c2a355c1f58b478c36a2378cd844eb373cfb56c70f7d1748cf3d865
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel),11(floppy),20(dialout),26(tape),27(video)
Comment 3 Jindrich Novy 2022-05-11 08:19:09 UTC 
Miroslav, do you have podman-catatonit installed? Wasn't it forcibly removed by a chance?
Comment 4 Miroslav Hostinsky 2022-05-11 08:21:09 UTC 
Yes, it's installed:

podman-catatonit-4.0.2-6.module+el8.6.0+14877+f643d2d6.x86_64

It works if I create pod with bind mount of /usr/libexec/catatonit/catatonit:/catatonit (so it must be installed):
# podman pod create --name pokus -v /usr/libexec/catatonit/catatonit:/catatonit
Comment 5 Miroslav Hostinsky 2022-05-11 08:30:40 UTC 
I tried rootless podman instance from scratch and it works (I can see "/catatonit -P" running under pod):

$ podman system reset
$ podman pod create --name pokus
$ podman run -it --rm --pod pokus alpine sh

But, the issue above is when running podman (under root) upgraded from 3->4 (RHEL8.5->8.6). No "podman system reset"/clean install. Just upgraded from 8.5->8.6.
Comment 6 Miroslav Hostinsky 2022-05-11 08:41:13 UTC 
Older pods created with podman 3.x before upgrade work (running with /pause in pod). It seems that only new pod images are created without /catatonit.
Comment 7 Valentin Rothberg 2022-05-11 09:16:48 UTC 
@Miroslav, could you share the run with `podman --log-level=debug` and share the output?

Also, could you share the output of `podman images`?  All for the failing root user.
Comment 11 Miroslav Hostinsky 2022-05-11 19:31:49 UTC 
It seems, that I found the problem. I created first pod with following command (there is no "localhost/podman-pause" image, it needs to be generated when first pod is created):

# podman pod create --name pod-httpd_php --uidmap=0:11900000:65536 --gidmap=0:11900000:65536 --ip 10.165.12.100 --ip6 2001:123:1234::1000
ERRO[0000] Can't add file /var/lib/containers/storage/overlay/1c4de2e5de894afaa1227fdb1eec59c2b763415cff277382d3bdf5e842aea1ee/merged/catatonit to tar: Host ID 0 cannot be mapped to a container ID

There is error (pod is not created), but still, "localhost/podman-pause" image is created with missing /catatonit (podman-pause image size around 3kB).

To fix the issue, I simply removed corrupted "localhost/podman-pause" image, and generated again first pod (in order to create "localhost/podman-pause") and then deleted it:
# podman pod create pokus && podman pod rm pokus

In this case, "localhost/podman-pause" is created with /catatonit binary and my complex pod (with uidmap) now works.

It seems, that there is difference in the podman behavior:
- podman 3.x - pod image is fetched from the hub: k8s.gcr.io/pause
- podman 4.x - pod image is generated locally on the first pod create and this process must be finished without error
Comment 12 Jindrich Novy 2022-05-12 04:45:13 UTC 
Miroslav, yes, this is expected behaviour and an actual bugfix - see bug 2059066.
Comment 13 Miroslav Hostinsky 2022-05-12 06:05:37 UTC 
OK. Problem solved from my point of view. Thanks!
Comment 14 Jindrich Novy 2022-05-12 06:27:23 UTC 
Thanks for reporting this anyway Miroslav!
Comment 15 Valentin Rothberg 2022-05-12 08:01:47 UTC 
Bug 2059066 looks different to me.  The one here does not have a relation to containers.conf but there seems to be a bug when creating the _local_ pause image.

I am reopening as I can reproduce.
Comment 17 Jindrich Novy 2022-05-12 08:08:21 UTC 
It is a feature Valentin: https://github.com/containers/podman/issues/12771#issuecomment-1021326507
Comment 18 Valentin Rothberg 2022-05-12 08:23:06 UTC 
(In reply to Jindrich Novy from comment #17)
> It is a feature Valentin:
> https://github.com/containers/podman/issues/12771#issuecomment-1021326507

I know, I built it :^)

But it is apparently broken when using `--uidmap=0:11900000:65536 --gidmap=0:11900000:65536` as described in this bug.

The issue is that `catatonit` cannot be copied into the locally built image, yet the image is built - only a log is emitted but it does not error out.  When starting the pod, the infra container cannot start (and hence the pod) because `catatonit` is not present in the image.
Comment 19 Valentin Rothberg 2022-05-12 09:36:29 UTC 
Until a fix is shipped, I suggest using the infra image with Podman v4.0 again.

You can either use `--infra-image=k8s.gcr.io/pause` when creating the pod or configure /etc/containers/containers.conf as follows:
```
[engine]
  infra_image = "k8s.gcr.io/pause"
```
Comment 20 Valentin Rothberg 2022-05-13 08:11:56 UTC 
Upstream PR to fix the issue: https://github.com/containers/podman/pull/14232
Comment 50 errata-xmlrpc 2022-11-08 09:15:45 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: container-tools:rhel8 security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:7457
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