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Update Maintenance.md #335

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Jan 25, 2023
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Update Maintenance.md #335

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28 changes: 14 additions & 14 deletions documentation/Maintenance.md
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Expand Up @@ -1004,6 +1004,20 @@ If there is such disk, it will be **cleared** and re-mounted to `/var/lib/contai

**Warning**: The migration procedure removes the docker daemon from all nodes in the cluster.

### Procedure Execution Steps

This procedure includes the following steps:
1. Verify and merge all the specified parameters into the inventory.
2. Install and configure containerd and podman.
3. Install crictl.
4. Implement the following steps on each control-plane and worker node by node.
1. Drain the node.
2. Update configurations on the node for migration to containerd.
3. Move the pods on the node from the docker's containers to those of containerd.
4. Uncordon the node.

**Warning**: Before starting the migration procedure, verify that you already have the actual claster.yaml structure. The services.docker scheme is deprecated.

### migrate_cri Parameters

The following sections describe the `migrate_cri` parameters.
Expand Down Expand Up @@ -1077,20 +1091,6 @@ thirdparties:
source: https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.20.0/crictl-v1.20.0-linux-amd64.tar.gz
```


### Procedure Execution Steps

1. Verify and merge all the specified parameters into the inventory.
2. Install and configure containerd and podman.
3. Install crictl.
4. Implement the following steps on each control-plane and worker node by node.
1. Drain the node.
2. Update configurations on the node for migration to containerd.
3. Move the pods on the node from the docker's containers to those of containerd.
4. Uncordon the node.

**Warning**: Before starting the migration procedure, verify that you already have the actual claster.yaml structure. The services.docker scheme is deprecated.

## Admission Migration Procedure

Since Kubernetes v1.20 Pod Security Policy (PSP) has been deprecated and will be delete in Kubernetes 1.25 the migration procedure
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