add doc: batch process node

docs/advanced/batch-node.md

@@ -0,0 +1,112 @@
+---
+title: batch process edge node
+sidebar_position: 5
+---
+
+## Abstract
+In edge scenarios, the node scale is often very large. The management process of a single node can no longer efficiently cope with such large-scale scenarios. How to manage large-scale nodes is becoming more and more important. This document will teach you how to use keadm to manage and maintain edge nodes on a large scale. 
+
+Please refer to the detailed design: [batch node proposal](https://github.com/kubeedge/kubeedge/blob/master/docs/proposals/batch-node-process.md)
+
+## Getting Started
+
+This case will guide you how to use the batch node join and reset capabilities, and introduce custom scripts using the `pre-run` and `post-run` parameters.
+
+**Pre-run and Post-run Parameter Description**
+
+To support custom scripts, we have introduced the optional parameters `pre-run` and `post-run` in various commands of keadm. These parameters allow users to pass in custom script files to perform some pre or post script tasks. For specific usage, refer to the subsequent use cases.
+
+Usage command reference:
+
+```shell
+keadm reset --post-run=test.sh xxx
+keadm join --pre-run=test.sh xxx
+```
+
+**Batch Node Join Config File**
+
+```yaml
+keadm:
+  download:
+    enable: true
+    url: https://github.com/kubeedge/kubeedge/releases/download/v1.18.1 # If this parameter is not configured, the official github repository will be used by default
+  keadmVersion: v1.18.1
+  archGroup: # This parameter can configure one or more of amd64\arm64\arm
+    - amd64
+  offlinePackageDir: /tmp/kubeedge/keadm/package/amd64  # When download.enable is true, this parameter can be left unconfigured
+  cmdTplArgs: # This parameter is the execution command template, which can be optionally configured and used in conjunction with nodes[x].keadmCmd
+    cmd: join --pre-run=./install-containerd.sh --cgroupdriver=cgroupfs --cloudcore-ipport=192.168.1.102:10000 --hub-protocol=websocket --certport=10002 --image-repository=docker.m.daocloud.io/kubeedge --kubeedge-version=v1.18.1 --remote-runtime-endpoint=unix:///run/containerd/containerd.sock
+    token: xxx
+nodes:
+  - nodeName: ubuntu1   # Unique name
+    arch: amd64
+    keadmCmd: '{{.cmd}} --edgenode-name=containerd-node1 --token={{.token}}' # Used in conjunction with keadm.cmdTplArgs
+    copyFrom: /root/test-keadm-batchjoin  # The file directory that needs to be remotely accessed to the joining node
+    ssh:
+      ip: 192.168.1.103
+      username: root
+      auth:
+        type: privateKey   # Log in to the node using a private key
+        privateKeyAuth:
+          privateKeyPath: /root/ssh/id_rsa
+  - nodeName: ubuntu2
+    arch: amd64
+    keadmCmd: join --pre-run=./install-containerd.sh --edgenode-name=containerd-node2 --cgroupdriver=cgroupfs --cloudcore-ipport=192.168.1.102:10000 --hub-protocol=websocket --certport=10002 --image-repository=docker.m.daocloud.io/kubeedge --kubeedge-version=v1.17.0 --remote-runtime-endpoint=unix:///run/containerd/containerd.sock  # Used alone
+    copyFrom: /root/test-keadm-batchjoin
+    ssh:
+      ip: 192.168.1.104
+      username: root
+      auth:
+        type: privateKey
+        privateKeyAuth:
+          privateKeyPath: /root/ssh/id_rsa
+maxRunNum: 5
+
+```
+
+In this configuration, `--pre-run=./install-containerd.sh` is introduced in the join command, which is used to install the containerd container runtime before the node accesses. The `install-containerd.sh` file is in the directory corresponding to `nodes[x].copyFrom` and is uploaded from the `control node` to the `remote node`.
+
+**Usage:**
+
+Save the above file on a `control node` that can access all edge nodes. For example, the file name is `batch-join-node.yaml`, and then execute `keadm batch -c ./batch-join-node.yaml` in the directory where the file is located.
+
+**Batch Node Reset Config File** 
+
+```yaml
+keadm:
+  download:
+    enable: true
+    url: https://github.com/kubeedge/kubeedge/releases/download/v1.18.1
+  keadmVersion: v1.18.1
+  archGroup:
+    - amd64
+  offlinePackageDir: /tmp/kubeedge/keadm/package/amd64
+nodes:
+  - nodeName: ubuntu1
+    keadmCmd: reset edge --post-run=./uninstall-containerd.sh
+    ssh:
+      ip: 192.168.1.103
+      username: root
+      auth:
+        type: password  # Log in to the node using a password
+        passwordAuth:
+          password: dangerous
+  - nodeName: ubuntu2
+    keadmCmd: reset edge --post-run=./uninstall-containerd.sh
+    ssh:
+      ip: 192.168.1.104
+      username: root
+      auth:
+        type: password
+        passwordAuth:
+          password: dangerous
+maxRunNum: 5
+```
+
+In this configuration, `--post-run=./uninstall-containerd.sh` is introduced in the reset command, which is used to uninstall the containerd container runtime after the node is reset. The `uninstall-containerd.sh` file is in the directory corresponding to `nodes[x].copyFrom` and is uploaded from the `control node` to the `remote node`.
+
+**Usage:** 
+Save the above file on a `control node` that can access all edge nodes. For example, the file name is `batch-reset-node.yaml`, and then execute `keadm batch -c ./batch-reset-node.yaml` in the directory where the file is located.
+
+#### Video Demo
+![demo](..%2F..%2Fstatic%2Fimg%2Fkeadm%2Fbatch-node-demo.gif)