podman search does not return results unless registry specified #8896

SuperFluffy · 2021-01-06T13:28:25Z

/kind bug

Description

Running podman search returns nothing, even though three registries are configured.

Steps to reproduce the issue:

Configure /etc/containers/registries.conf in VERSION 2 format:

# /etc/containers/registries.conf
[[registry]]
location = "docker.io"

[[registry]]
location = "registry.fedoraproject.org"

[[registry]]
location = "registry.access.redhat.com"

Verify that the registries are detected:

$ podman info

[...]
registries:
  docker.io:
    Blocked: false
    Insecure: false
    Location: docker.io
    MirrorByDigestOnly: false
    Mirrors: null
    Prefix: docker.io
  registry.access.redhat.com:
    Blocked: false
    Insecure: false
    Location: registry.access.redhat.com
    MirrorByDigestOnly: false
    Mirrors: null
    Prefix: registry.access.redhat.com
  registry.fedoraproject.org:
    Blocked: false
    Insecure: false
    Location: registry.fedoraproject.org
    MirrorByDigestOnly: false
    Mirrors: null
    Prefix: registry.fedoraproject.org
[...]

Search for an image:

$ podman search httpd
# Nothing here

Search on a specific repository to verify that it can actually find something:

$ podman search --limit 3 docker.io/httpd
INDEX      NAME                               DESCRIPTION                                      STARS   OFFICIAL  AUTOMATED
docker.io  docker.io/library/httpd            The Apache HTTP Server Project                   3310    [OK]
docker.io  docker.io/centos/httpd-24-centos7  Platform for running Apache httpd 2.4 or bui...  36
docker.io  docker.io/manageiq/httpd           Container with httpd, built on CentOS for Ma...  0                 [OK]

Describe the results you received:

Empty result

Describe the results you expected:

Search results from all configured registries.

Additional information you deem important (e.g. issue happens only occasionally):

Podman is running rootless using cgroups v2.

Output of podman version:

podman version 2.2.1

Output of podman info --debug:

host:
  arch: amd64
  buildahVersion: 1.18.0
  cgroupManager: systemd
  cgroupVersion: v2
  conmon:
    package: Unknown
    path: /usr/bin/conmon
    version: 'conmon version 2.0.22, commit: 9c34a8663b85e479e0c083801e89a2b2835228ed'
  cpus: 16
  distribution:
    distribution: arch
    version: unknown
  eventLogger: journald
  hostname: blackie
  idMappings:
    gidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    uidmap:
    - container_id: 0
      host_id: 1000
      size: 1
  kernel: 5.10.4-arch2-1
  linkmode: dynamic
  memFree: 59803045888
  memTotal: 66795577344
  ociRuntime:
    name: crun
    package: Unknown
    path: /usr/bin/crun
    version: |-
      crun version 0.16
      commit: eb0145e5ad4d8207e84a327248af76663d4e50dd
      spec: 1.0.0
      +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +YAJL
  os: linux
  remoteSocket:
    path: /run/user/1000/podman/podman.sock
  rootless: true
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: Unknown
    version: |-
      slirp4netns version 1.1.8
      commit: d361001f495417b880f20329121e3aa431a8f90f
      libslirp: 4.4.0
      SLIRP_CONFIG_VERSION_MAX: 3
      libseccomp: 2.5.1
  swapFree: 0
  swapTotal: 0
  uptime: 3h 17m 32.39s (Approximately 0.12 days)
registries:
  docker.io:
    Blocked: false
    Insecure: false
    Location: docker.io
    MirrorByDigestOnly: false
    Mirrors: null
    Prefix: docker.io
  registry.access.redhat.com:
    Blocked: false
    Insecure: false
    Location: registry.access.redhat.com
    MirrorByDigestOnly: false
    Mirrors: null
    Prefix: registry.access.redhat.com
  registry.fedoraproject.org:
    Blocked: false
    Insecure: false
    Location: registry.fedoraproject.org
    MirrorByDigestOnly: false
    Mirrors: null
    Prefix: registry.fedoraproject.org
store:
  configFile: /home/janis/.config/containers/storage.conf
  containerStore:
    number: 0
    paused: 0
    running: 0
    stopped: 0
  graphDriverName: overlay
  graphOptions:
    overlay.mount_program:
      Executable: /usr/bin/fuse-overlayfs
      Package: Unknown
      Version: |-
        fusermount3 version: 3.10.1
        fuse-overlayfs: version 1.3
        FUSE library version 3.10.1
        using FUSE kernel interface version 7.31
  graphRoot: /home/janis/.local/share/containers/storage
  graphStatus:
    Backing Filesystem: extfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "false"
  imageStore:
    number: 0
  runRoot: /run/user/1000/containers
  volumePath: /home/janis/.local/share/containers/storage/volumes
version:
  APIVersion: 2.1.0
  Built: 1607464103
  BuiltTime: Tue Dec  8 22:48:23 2020
  GitCommit: a0d478edea7f775b7ce32f8eb1a01e75374486cb
  GoVersion: go1.15.6
  OsArch: linux/amd64
  Version: 2.2.1

Package info (e.g. output of rpm -q podman or apt list podman):

# archlinux
$ pacman -Si podman
Repository      : community
Name            : podman
Version         : 2.2.1-1
Description     : Tool and library for running OCI-based containers in pods
Architecture    : x86_64
URL             : https://github.com/containers/libpod
Licenses        : Apache
Groups          : None
Provides        : None
Depends On      : cni-plugins  conmon  containers-common  device-mapper  iptables  libseccomp  runc  slirp4netns  libsystemd  fuse-overlayfs  libgpgme.so=11-64
Optional Deps   : podman-docker: for Docker-compatible CLI
                  btrfs-progs: support btrfs backend devices
                  catatonit: --init flag support
                  crun: support for unified cgroupsv2
Conflicts With  : None
Replaces        : None
Download Size   : 19.57 MiB
Installed Size  : 79.09 MiB
Packager        : Morten Linderud <foxboron@archlinux.org>
Build Date      : Tue Dec 8 22:48:23 2020
Validated By    : MD5 Sum  SHA-256 Sum  Signature

Have you tested with the latest version of Podman and have you checked the Podman Troubleshooting Guide?

Yes

Additional environment details (AWS, VirtualBox, physical, etc.):

Physical machine running latest kernel:

$ uname -a
Linux 5.10.4-arch2-1 #1 SMP PREEMPT Fri, 01 Jan 2021 05:29:53 +0000 x86_64 GNU/Linux

The text was updated successfully, but these errors were encountered:

vrothberg · 2021-01-06T15:17:47Z

Thanks for reaching out!

# /etc/containers/registries.conf
[[registry]]
location = "docker.io"

[[registry]]
location = "registry.fedoraproject.org"

[[registry]]
location = "registry.access.redhat.com"

The upper config isn't correct. You need to set it as follows:

unqualified-search-registries=["registry.access.redhat.com", "registry.fedoraproject.org", "docker.io"]

SuperFluffy · 2021-01-06T15:22:33Z

Wow, thanks, it works now. But that was not at all obvious to me... I have reread the comments in the default registries.conf, and it's a bit clearer now, but I am still scratching my head a bit..

vrothberg · 2021-01-06T15:26:36Z

I admit that the config can be quite complex. If you have suggestions to make it easer to digest, feel free to share. Any feedback is helpful :)

Folaht · 2021-10-13T09:52:23Z

Why 'unqualified-search-registries'?
It sounds like something a user shouldn't do and thus should never do any general search.
Also, if there are unqualified-search-registries, one can conclude there must be qualified-search-registries as well, which are naturally more preferable over unqualified ones, so one would search for them. I did.
And reading the containers-registries.conf(5) manual, it talks about a general podman pull being unsafe.
I get that, but I'm doing a podman search should result in receiving read-only data, not run executable files.
Does podman pull use podman search in it's code or something?

It's also not advertised as such in the podman.io documentation which shows general searches.

https://podman.io/getting-started/
https://docs.podman.io/en/latest/markdown/podman-search.1.html

nycki93 · 2022-03-16T01:40:15Z

Agreed, the examples in the documentation should work with the default config.

vrothberg · 2022-03-16T08:22:33Z

Agreed, the examples in the documentation should work with the default config.

Which default config (on which distribution) are you referring to?

vrothberg · 2022-03-16T08:23:32Z

It's also not advertised as such in the podman.io documentation which shows general searches.

The search registries are mentioned in the first paragraph. If you have concrete suggestions to improve the docs, please let me know.

Archsx · 2022-11-18T00:35:42Z

Hi, I'm the one who is completely new to containers ( https://docs.podman.io/en/latest/ ) , and it gives a link to "https://docs.podman.io/en/latest/Introduction.html" , follow the post and get empty result. why not give a link to tutorials ?

mheon · 2022-11-18T16:45:42Z

Why are you posting on this issue? Documentation issues with podman.io can be reported against the podmai.io repo: github.com/containers/podman.io

jcorbin · 2022-12-18T19:20:00Z

Can confirm that this is still frustrating for a new user who's trying to follow the docs:

tries to podman search (on latest arch linux after installing podman, and verifying I'm otherwise set for "rootless" mode
gets no output
googles why no output
finds this github issue
still left wandering what to do next... I guess I'll just put a docker.io in there since I wanted to finally try out "docker things" but would rather use podman...

But all I really want is a clear "Here, put THIS in your config to get started" rather than podman search leaving me hanging out of https://docs.podman.io/en/latest/Introduction.html ...

vrothberg · 2022-12-19T08:25:14Z

Does Arch not set any unqualified-search-registry in /etc/containers/registries.conf?

jcorbin · 2022-12-19T19:58:51Z

Nope, no lines in the config from containers-common were uncommented, so not just was there no unqaulified-search-registry, there weren't any registries defined at all.

At any rate, I was just trying to get rootless mode up and running, so putting the following into ~/.config/containers/registries.conf got me going:

unqualified-search-registries = ["docker.io"]

[[registry]]
location = "docker.io"

vrothberg · 2022-12-20T09:09:47Z

Thanks for confirming, @jcorbin!

I suggest reaching out to the Arch maintainers. unqualified-search-registries = ["docker.io"] should be the minimum setting for Podman to behave as Docker. Other distributions add more registries on top.

prefixing the registry name works, even if docker.io is not specified as the registry in the configuration file like: ``` unqualified-search-registries = ["docker.io"] [[registry]] location = "docker.io" ``` containers#8896 Signed-off-by: gubbu <38842604+gubbu@users.noreply.github.com>

TomSweeneyRedHat · 2024-01-22T15:51:18Z

The podman.io repo received a new PR a day or two ago about this discussion/issue. Pasting the comment here for @rkiddy

Text from the Podman.io PR 262 :

Otherwise, to a neophyte user, the 'podman search' command returns nothing and seems broken.

See #8896

But why should it be necessary to find the issue. The suggestion in the bug was good. So, why not just throw a bone to the new user?

openshift-ci-robot added the kind/bug Categorizes issue or PR as related to a bug. label Jan 6, 2021

vrothberg closed this as completed Jan 6, 2021

github-actions bot added the locked - please file new issue/PR Assist humans wanting to comment on an old issue or PR with locked comments. label Sep 6, 2023

github-actions bot locked as resolved and limited conversation to collaborators Sep 6, 2023

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podman search does not return results unless registry specified #8896

podman search does not return results unless registry specified #8896

SuperFluffy commented Jan 6, 2021

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nycki93 commented Mar 16, 2022

vrothberg commented Mar 16, 2022

vrothberg commented Mar 16, 2022

Archsx commented Nov 18, 2022

mheon commented Nov 18, 2022

jcorbin commented Dec 18, 2022

vrothberg commented Dec 19, 2022

jcorbin commented Dec 19, 2022

vrothberg commented Dec 20, 2022

TomSweeneyRedHat commented Jan 22, 2024

podman search does not return results unless registry specified #8896

podman search does not return results unless registry specified #8896

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SuperFluffy commented Jan 6, 2021

vrothberg commented Jan 6, 2021

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nycki93 commented Mar 16, 2022

vrothberg commented Mar 16, 2022

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Archsx commented Nov 18, 2022

mheon commented Nov 18, 2022

jcorbin commented Dec 18, 2022

vrothberg commented Dec 19, 2022

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