Uyuni 2026.04 Proxy Deployment on K3s
1. Installing K3s
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Uyuni Proxy is supported on K3s running on top of SL Micro in a single node cluster. If you need to deploy it in any other Kubernetes environment, contact support for evaluation. |
On the container host machine, install K3s (replace <K3S_HOST_FQDN> with the FQDN of your K3s host):
curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="--tls-san=<K3S_HOST_FQDN>" sh -
2. Installing Tools
The installation requires the mgrpxy and helm packages.
The mgrpxy and helm packages are available in the Uyuni Proxy product repositories.
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To install it, run:
transactional-update pkg install helm mgrpxy -
Reboot
2.1. Generate the Proxy Configuration with Web UI
In the Web UI, navigate to and fill the required data:
In the
Proxy FQDNfield type fully qualified domain name for the proxy.In the
Parent FQDNfield type fully qualified domain name for the Uyuni Server or another Uyuni Proxy.In the
Proxy SSH portfield type SSH port on which SSH service is listening on Uyuni Proxy. Recommended is to keep default 8022.In the
Max Squid cache size [MB]field type maximal allowed size for Squid cache. Recommended is to use at most 80% of available storage for the containers.
2 GB represents the default proxy squid cache size. This will need to be adjusted for your environment.
In the
SSL certificateselection list choose if new server certificate should be generated for Uyuni Proxy or an existing one should be used. You can consider generated certificates as Uyuni builtin (self signed) certificates.Depending on the choice then provide either path to signing CA certificate to generate a new certificate or path to an existing certificate and its key to be used as proxy certificate.
The CA certificates generated by the server are stored in the
/var/lib/containers/storage/volumes/root/_data/ssl-builddirectory.For more information about existing or custom certificates and the concept of corporate and intermediate certificates, see Import SSL Certificates.
Click Generate to register a new proxy FQDN in the Uyuni Server and generate a configuration archive (
config.tar.gz) containing details for the container host.After a few moments you are presented with file to download. Save this file locally.
2.2. Generate Proxy Configuration With spacecmd and Self-Signed Certificate
You can generate a Proxy configuration using spacecmd.
SSH into your container host.
Execute the following command replacing the Server and Proxy FQDN:
mgrctl exec -ti 'spacecmd proxy_container_config_generate_cert -- dev-pxy.example.com dev-srv.example.com 2048 email@example.com -o /tmp/config.tar.gz'Copy the generated configuration from the server container:
mgrctl cp server:/tmp/config.tar.gz .
2.3. Generate Proxy Configuration With spacecmd and Custom Certificate
You can generate a Proxy configuration using spacecmd for custom certificates rather than the default self-signed certificates.
SSH into your Server container host.
Execute the following commands, replacing the Server and Proxy FQDN:
for f in ca.crt proxy.crt proxy.key; do mgrctl cp $f server:/tmp/$f done mgrctl exec -ti 'spacecmd proxy_container_config -- -p 8022 pxy.example.com srv.example.com 2048 email@example.com /tmp/ca.crt /tmp/proxy.crt /tmp/proxy.key -o /tmp/config.tar.gz'If your setup uses an intermediate CA, copy it as well and include it in the command with the
-ioption (can be provided multiple times if needed) :mgrctl cp intermediateCA.pem server:/tmp/intermediateCA.pem mgrctl exec -ti 'spacecmd proxy_container_config -- -p 8022 -i /tmp/intermediateCA.pem pxy.example.com srv.example.com 2048 email@example.com /tmp/ca.crt /tmp/proxy.crt /tmp/proxy.key -o /tmp/config.tar.gz'Copy the generated configuration from the server container:
mgrctl cp server:/tmp/config.tar.gz .
3. Deploying the Uyuni Proxy Helm Chart
To configure the storage of the volumes to be used by the Uyuni Proxy pod, define persistent volumes for the following claims. If you do not customize the storage configuration, K3s will automatically create the storage volumes for you.
The persistent volume claims are named:
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squid-cache-pv-claim -
package-cache-pv-claim -
tftp-boot-pv-claim
Create the configuration for the Uyuni Proxy as documented in Uyuni 2026.04 Proxy Deployment.
Copy the configuration tar.gz file and then install:
mgrpxy install kubernetes /path/to/config.tar.gz
For more information see https://kubernetes.io/docs/concepts/storage/persistent-volumes/ (kubernetes) or https://rancher.com/docs/k3s/latest/en/storage/ (K3s) documentation.