See also documentation about Podman and Docker
How to use a docker regsitry 1# list index catalog 2curl https://registry.k3s.example.com/v2/_catalog | jq 3 4# List tags available regarding an image 5curl https://registry.k3s.example.com/v2/myhaproxy/tags/list 6 7# list index catalog - with user/password 8curl https://registry-admin:<PWD>@registry.k3s.example.com/v2/_catalog | jq 9 10# list index catalog - when you need to specify the CA 11curl -u user:password https://<url>:<port>/v2/_catalog --cacert ca.crt | jq 12 13# list index catalog - for OCP 14curl -u user:password https://<url>:<port>/v2/ocp4/openshift4/tags/list | jq 15 16# Login to registry with podman 17podman login -u registry-admin -p <PWD> registry.k3s.example.com 18 19# Push images in the registry 20skopeo copy "--dest-creds=registry-admin:<PWD>" docker://docker.io/goharbor/harbor-core:v2.6.1 docker://registry.k3s.example.com/goharbor/harbor-core:v2.6.1 Install a Local private docker registry Change Docker Daemon config to allow insecure connexion with your ip 1ip a 2sudo vi /etc/docker/daemon.json 1{ 2"insecure-registries": ["192.168.1.11:5000"] 3} 1sudo systemctl restart docker 2docker info Check docker config
Description Buildah: is used to build Open Container Initiative (OCI) format or Docker format container images without the need for a daemon.
Podman: provides the ability to directly run container images without a daemon. Podman can pull container images from a container registry, if they are not available locally.
Skopeo: offers features for pulling and pushing containers to registries. Moving containers between registries is supported. Container image inspection is also offered and some introspective capabilities can be performed, without first downloading the container itself.
1# see images available on your hosts 2docker image list 3 4# equal to above 5docker images 6REPOSITORY TAG IMAGE ID CREATED SIZE 7httpd latest 6fa26f20557b 45 hours ago 164MB 8hello-world latest 75280d40a50b 4 months ago 1.69kB 9 10# give sha 11docker images --no-trunc=true 12 13# delete unused images 14docker rmi $(docker images -q) 15# delete images without tags 16docker rmi $(docker images | grep "^<none>" | awk '{print $3}')
Deploy a Nexus3 in container on VM Load the image
1podman pull sonatype/nexus3:3.59.0 2podman save sonatype/nexus3:3.59.0 -o nexus3.tar 3podman load < nexus3.tar Create a service inside /etc/systemd/system/container-nexus3.service with content below:
1[Unit] 2Description=Nexus Podman container 3Wants=syslog.service 4 5[Service] 6User=nexus-system 7Group=nexus-system 8Restart=always 9ExecStart=/usr/bin/podman run \ 10 --log-level=debug \ 11 --rm \ 12 -ti \ 13 --publish 8081:8081 \ 14 --name nexus \ 15 sonatype/nexus3:3.59.0 16 17ExecStop=/usr/bin/podman stop -t 10 nexus 18 19[Install] 20WantedBy=multi-user.target
Deploy a Quay.io / Mirror-registry on container Nothing original, it just the documentation of redhat, but can be usefull to kickstart a registry.
Prerequisites:
10G /home 15G /var 300G /srv or /opt (regarding QuayRoot) min 2 or more vCPUs. min 8 GB of RAM. 1# packages 2sudo yum install -y podman 3sudo yum install -y rsync 4sudo yum install -y jq 5 6# Get tar 7mirror="https://mirror.openshift.com/pub/openshift-v4/clients" 8wget ${mirror}/mirror-registry/latest/mirror-registry.tar.gz 9tar zxvf mirror-registry.tar.gz 10 11# Get oc-mirror 12curl https://mirror.openshift.com/pub/openshift-v4/x86_64/clients/ocp/latest/oc-mirror.rhel9.tar.gz -O 13 14# Basic install 15sudo ./mirror-registry install \ 16 --quayHostname quay01.example.local \ 17 --quayRoot /opt 18 19# More detailed install 20sudo ./mirror-registry install \ 21 --quayHostname quay01.example.local \ 22 --quayRoot /srv \ 23 --quayStorage /srv/quay-pg \ 24 --pgStorage /srv/quay-storage \ 25 --sslCert tls.crt \ 26 --sslKey tls.key 27 28podman login -u init \ 29 -p 7u2Dm68a1s3bQvz9twrh4Nel0i5EMXUB \ 30 quay01.example.local:8443 \ 31 --tls-verify=false 32 33# By default login go in: 34cat $XDG_RUNTIME_DIR/containers/auth.json 35 36# Get IP 37sudo podman inspect --format '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' quay-app 38 39#unistall 40sudo ./mirror-registry uninstall -v \ 41 --quayRoot <example_directory_name> 42 43# Info 44curl -u init:password https://quay01.example.local:8443/v2/_catalog | jq 45curl -u root:password https://<url>:<port>/v2/ocp4/openshift4/tags/list | jq 46 47# Get an example of imageset 48oc-mirror init --registry quay.example.com:8443/mirror/oc-mirror-metadata 49 50# Get list of Operators, channels, packages 51oc-mirror list operators --catalog=registry.redhat.io/redhat/redhat-operator-index:v4.14 52oc-mirror list operators --catalog=registry.redhat.io/redhat/redhat-operator-index:v4.14 --package=kubevirt-hyperconverged 53oc-mirror list operators --catalog=registry.redhat.io/redhat/redhat-operator-index:v4.14 --package=kubevirt-hyperconverged --channel=stable unlock user init/admin 1QUAY_POSTGRES=`podman ps | grep quay-postgres | awk '{print $1}'` 2 3podman exec -it $QUAY_POSTGRES psql -d quay -c "UPDATE "public.user" SET invalid_login_attempts = 0 WHERE username = 'init'" Source Mirror-registry
