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helm: remove konnectivity from control-planes

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This is the first step in our migration off of
konnectivity. Before node-to-node encryption
we used konnectivity to route some KubeAPI
to kubelet traffic over the pod network which then
would be encrypted.

Since we enabled node-to-node encryption this has no
security upsides anymore. Note that we still deploy
the konnectivity agents via helm and still have the
load balancer for konnectivity.

In the following releases we will remove both.
This commit is contained in:
Leonard Cohnen 2023-11-15 12:38:01 +01:00 • committed by 3u13r
parent 79f562374a
commit cfcc0898b2
10 changed files with 23 additions and 374 deletions
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21
bootstrapper/internal/kubernetes/k8sapi/kubeadm_config.go
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@ -71,10 +71,9 @@ func (c *KubdeadmConfiguration) InitConfiguration(externalCloudProvider bool, cl
"audit-log-path": filepath.Join(auditLogDir, auditLogFile), // CIS benchmark
"audit-log-maxage": "30", // CIS benchmark - Default value of Rancher
// log size = 10 files * 100MB + 100 MB (which is currently being written) = 1.1GB
"audit-log-maxbackup": "10", // CIS benchmark - Default value of Rancher
"audit-log-maxsize": "100", // CIS benchmark - Default value of Rancher
"profiling": "false", // CIS benchmark
"egress-selector-config-file": "/etc/kubernetes/egress-selector-configuration.yaml",
"audit-log-maxbackup": "10", // CIS benchmark - Default value of Rancher
"audit-log-maxsize": "100", // CIS benchmark - Default value of Rancher
"profiling": "false", // CIS benchmark
"kubelet-certificate-authority": filepath.Join(
kubeconstants.KubernetesDir,
kubeconstants.DefaultCertificateDir,
@ -104,20 +103,6 @@ func (c *KubdeadmConfiguration) InitConfiguration(externalCloudProvider bool, cl
ReadOnly: true,
PathType: corev1.HostPathFile,
},
{
Name: "egress-config",
HostPath: "/etc/kubernetes/egress-selector-configuration.yaml",
MountPath: "/etc/kubernetes/egress-selector-configuration.yaml",
ReadOnly: true,
PathType: corev1.HostPathFile,
},
{
Name: "konnectivity-uds",
HostPath: "/run/konnectivity-server",
MountPath: "/run/konnectivity-server",
ReadOnly: false,
PathType: corev1.HostPathDirectoryOrCreate,
},
},
},
CertSANs: []string{"127.0.0.1"},