[release-1.25] Make klipper-lb image configurable

[brandond]

• Make klipper-lb image configurable  #7625 backport

[VestigeJ]

Current Release running using klipper-lb v0.4.3

$ sudo INSTALL_K3S_VERSION=v1.25.10+k3s1 INSTALL_K3S_EXEC=server ./install-k3s.sh

[INFO]  Using v1.25.10+k3s1 as release
[INFO]  Downloading hash https://github.com/k3s-io/k3s/releases/download/v1.25.10+k3s1/sha256sum-amd64.txt
[INFO]  Downloading binary https://github.com/k3s-io/k3s/releases/download/v1.25.10+k3s1/k3s
[INFO]  Verifying binary download
[INFO]  Installing k3s to /usr/local/bin/k3s
[INFO]  Skipping installation of SELinux RPM
[INFO]  Creating /usr/local/bin/kubectl symlink to k3s
[INFO]  Creating /usr/local/bin/crictl symlink to k3s
[INFO]  Creating /usr/local/bin/ctr symlink to k3s
[INFO]  Creating killall script /usr/local/bin/k3s-killall.sh
[INFO]  Creating uninstall script /usr/local/bin/k3s-uninstall.sh
[INFO]  env: Creating environment file /etc/systemd/system/k3s.service.env
[INFO]  systemd: Creating service file /etc/systemd/system/k3s.service
[INFO]  systemd: Enabling k3s unit
Created symlink /etc/systemd/system/multi-user.target.wants/k3s.service → /etc/systemd/system/k3s.service.
[INFO]  systemd: Starting k3s

$ sudo /usr/local/bin/crictl -r /var/run/k3s/containerd/containerd.sock images |grep klipper-lb

I0614 22:53:06.338000   28060 util_unix.go:104] "Using this endpoint is deprecated, please consider using full URL format" endpoint="/var/run/k3s/containerd/containerd.sock" URL="unix:///var/run/k3s/containerd/containerd.sock"
docker.io/rancher/klipper-lb                 v0.4.3                 613ae033d1f9c       4.28MB

$ k3s -v

k3s version v1.25.10+k3s1 (613a3bc8)
go version go1.19.9

$ kg no,po -A

NAME                    STATUS   ROLES                       AGE    VERSION
node/ip-1-1-2-2         Ready    control-plane,etcd,master   101s   v1.25.10+k3s1

NAMESPACE     NAME                                          READY   STATUS      RESTARTS   AGE
kube-system   pod/coredns-8b9777675-fjnt5                   1/1     Running     0          85s
kube-system   pod/helm-install-traefik-crd-8hhcl            0/1     Completed   0          86s
kube-system   pod/helm-install-traefik-kbm9n                0/1     Completed   1          86s
kube-system   pod/local-path-provisioner-69dff9496c-mv6mq   1/1     Running     0          85s
kube-system   pod/metrics-server-5f9f776df5-qs42x           1/1     Running     0          85s
kube-system   pod/svclb-traefik-7d91769e-m8dqk              2/2     Running     0          69s
kube-system   pod/traefik-66fd46ccd-87npc                   1/1     Running     0          69s

For this validation i actually reverted the latest version backwards from v0.4.4 which the COMMIT installs by default back to the previous releases v0.4.3

$ curl -fL https://get.k3s.io| INSTALL_K3S_COMMIT=873fc1c77cd3453e06e31eea5652e22f81f1743b sh -s - server --kube-cloud-controller-manager-arg="cloud-config=/etc/rancher/k3s/cloud-config.yaml"

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 32312  100 32312    0     0   124k      0 --:--:-- --:--:-- --:--:--  124k
[INFO]  Using commit 873fc1c77cd3453e06e31eea5652e22f81f1743b as release
[INFO]  Downloading hash https://k3s-ci-builds.s3.amazonaws.com/k3s-873fc1c77cd3453e06e31eea5652e22f81f1743b.sha256sum
[INFO]  Skipping binary downloaded, installed k3s matches hash
[INFO]  Skipping installation of SELinux RPM
[INFO]  Skipping /usr/local/bin/kubectl symlink to k3s, already exists
[INFO]  Skipping /usr/local/bin/crictl symlink to k3s, already exists
[INFO]  Skipping /usr/local/bin/ctr symlink to k3s, already exists
[INFO]  Creating killall script /usr/local/bin/k3s-killall.sh
[INFO]  Creating uninstall script /usr/local/bin/k3s-uninstall.sh
[INFO]  env: Creating environment file /etc/systemd/system/k3s.service.env
[INFO]  systemd: Creating service file /etc/systemd/system/k3s.service
[INFO]  systemd: Enabling k3s unit
Created symlink /etc/systemd/system/multi-user.target.wants/k3s.service → /etc/systemd/system/k3s.service.
[INFO]  systemd: Starting k3s

$ kg no,po -A

NAME                    STATUS   ROLES                       AGE     VERSION
node/ip-1-1-6-143   Ready    control-plane,etcd,master   2m29s   v1.25.10+k3s-873fc1c7

NAMESPACE     NAME                                          READY   STATUS      RESTARTS   AGE
kube-system   pod/coredns-8b9777675-rlj78                   1/1     Running     0          2m15s
kube-system   pod/helm-install-traefik-b5xkb                0/1     Completed   1          2m16s
kube-system   pod/helm-install-traefik-crd-fmkpw            0/1     Completed   0          2m16s
kube-system   pod/local-path-provisioner-69dff9496c-wtf7j   1/1     Running     0          2m15s
kube-system   pod/metrics-server-854c559bd-fwwxt            0/1     Running     0          2m15s

$ sudo /usr/local/bin/crictl -r /var/run/k3s/containerd/containerd.sock images |grep klipper-lb

I0614 23:01:59.047670   27723 util_unix.go:104] "Using this endpoint is deprecated, please consider using full URL format" endpoint="/var/run/k3s/containerd/containerd.sock" URL="unix:///var/run/k3s/containerd/containerd.sock"
docker.io/rancher/klipper-lb                 v0.4.3                 613ae033d1f9c       4.28MB

$ k3s -v

k3s version v1.25.10+k3s-873fc1c7 (873fc1c7)
go version go1.19.9

$ sudo cat /etc/rancher/k3s/cloud-config.yaml

{
  "lbEnabled": true,
  "lbImage": "rancher/klipper-lb:v0.4.3",
  "lbNamespace": "kube-system",
  "nodeEnabled": true,
  "rootless": false
}

For posterity showing same commit ID installation reporting newer klipper-lb version

$ sudo INSTALL_K3S_COMMIT=873fc1c77cd3453e06e31eea5652e22f81f1743b INSTALL_K3S_EXEC=server ./install-k3s.sh

[INFO]  Using commit 873fc1c77cd3453e06e31eea5652e22f81f1743b as release
[INFO]  Downloading hash https://k3s-ci-builds.s3.amazonaws.com/k3s-873fc1c77cd3453e06e31eea5652e22f81f1743b.sha256sum
[INFO]  Downloading binary https://k3s-ci-builds.s3.amazonaws.com/k3s-873fc1c77cd3453e06e31eea5652e22f81f1743b
[INFO]  Verifying binary download
[INFO]  Installing k3s to /usr/local/bin/k3s
[INFO]  Skipping installation of SELinux RPM
[INFO]  Creating /usr/local/bin/kubectl symlink to k3s
[INFO]  Creating /usr/local/bin/crictl symlink to k3s
[INFO]  Creating /usr/local/bin/ctr symlink to k3s
[INFO]  Creating killall script /usr/local/bin/k3s-killall.sh
[INFO]  Creating uninstall script /usr/local/bin/k3s-uninstall.sh
[INFO]  env: Creating environment file /etc/systemd/system/k3s.service.env
[INFO]  systemd: Creating service file /etc/systemd/system/k3s.service
[INFO]  systemd: Enabling k3s unit
Created symlink /etc/systemd/system/multi-user.target.wants/k3s.service → /etc/systemd/system/k3s.service.
[INFO]  systemd: Starting k3s

$ sudo /usr/local/bin/crictl -r /var/run/k3s/containerd/containerd.sock images |grep klipper-lb

I0614 23:06:40.057962   31118 util_unix.go:104] "Using this endpoint is deprecated, please consider using full URL format" endpoint="/var/run/k3s/containerd/containerd.sock" URL="unix:///var/run/k3s/containerd/containerd.sock"
docker.io/rancher/klipper-lb                 v0.4.4                 af74bd845c4a8       4.92MB