Issues Pulling Multiarch Containers
by Adam Kimball
Hello all,
Recently I’ve been attempting to get podman to pull containers on a
ppc64le centos 8 node, and have found that it grabs the amd64 versions
of these containers regardless of the architecture flag that’s set. See
[1] for an example output. This is on a standard centos8-cloud image.
I’m wondering if this is a known bug, and if there are any known
workarounds.
Thanks!
Adam Kimball
[1] - http://paste.openstack.org/show/792053/
3 years, 5 months
Docker Compose Standardization News
by Scott McCarty
List,
I'm sharing these articles because I know we have a community and some
are keeping their eye on Docker Compose and thinking about how this
will work with podman-compose as well as the Podman API V2 work.
I would comment that I think "podman generate kube" and "podman play kube"
are a better solution to simplify the construction of Kubernetes YAML
(addressing the first sentence in this blog):
https://codeengineered.com/blog/2020/docker-compose-spec/
I'm confused on how "The Compose Specification works with other tools such
as Helm charts and Kubernetes YAML to make your user experiences simpler
and portable." but curious of other people's thoughts:
https://www.compose-spec.io/
Best Regards
Scott M
--
--
[image: Summit Virtual Experience]
<https://www.redhat.com/en/summit?sc_cid=7013a000002D2QxAAK>
Scott McCarty
Product Management - Containers, Red Hat Enterprise Linux & OpenShift
Email: smccarty(a)redhat.com
Phone: 312-660-3535
Cell: 330-807-1043
Web: http://crunchtools.com
Using Azure Pipelines with Red Hat Universal Base Image and Quay.io:
https://red.ht/2TvYo3Y
3 years, 5 months
IndiMail (updated and enhanced QMail) mail server in a Podman Container
by Philip Rhoades
People,
I have wanted to get my old QMail mail server system up to date for some
years (it has been going more-or-less unchanged for about 21 years!).
Some years ago I started using docker for my Jekyll and Rails sites and
more recently I became quite interested in Podman - which I thought was
a much nicer environment for me - I used RH from version 4.0 to 9.0
(before RHEL came on the scene) and have been using Fedora since the
beginning - so the whole environment was very interesting for me - as
well as for Atomic, CoreOS and SilverBlue etc.
I became interested in IndiMail:
http://www.indimail.org
a while ago because it was a well maintained and enhanced version of
QMail with everything you would need in a modern MTA. So as time went
on it seemed natural to think of moving over to IndiMail but having it
running in a Podman container. Anyway, after a lot of time spent both
by me and Indimail creator, Manvendra, and with the generous help of
people on this list, we have finally gotten the "light" version,
IndiMail-MTA, working.
A quick summary of the current situation:
1. I install the image with:
podman pull cprogrammer/indimail:fc31
2. I create a container with:
podman run -d -h pricom.com.au \
-v /home:/home \
--net=host \
--name $imv \
`podman images | grep "$imv" | awk '{ print $3 }'` \
$imv
3. Make manual changes to stuff in /etc to correspond to the users in
the mounted /home dir - soon I will look at the previous suggestions
from people here to see if I can make that situation nicer.
There are some domain specific changes that need to be made to the files
in:
/etc/indimail/control
We had to make some changes to the SMTP setup so it could talk to
RoundCubeMail - RCM was attempting to try the last AUTH SMTP method
advertised (DIGEST-MD5) instead of AUTH PLAIN or AUTH LOGIN. The
unconfigured AUTH methods were disabled by setting env variables in the
SMTP config.
As of now, I think it is a pretty seamless process to get up and
running.
The light -mta version is quite adequate for my needs but the full
indimail install can handle lots of domains, millions of users and very
high volumes of mail - and it is very fast ie it has kept all the
features that the original QMail was popular for but has all the
enhancements needed for a modern mail server.
As we move from F31 to F32 and future versions, I will streamline my
process for pulling the image, building the container and making custom
changes. I will also, start building from the Docker files and, at some
stage when I have more time, repeat the exercise with the full IndiMail
suite to also get that going painlessly.
Regards,
Phil.
--
Philip Rhoades
PO Box 896
Cowra NSW 2794
Australia
E-mail: phil(a)pricom.com.au
3 years, 5 months
