SSH method 2 for adding node nodes in Jenkins

install SSH plug-in unit

Jenkins- Plug-in management - Optional plug-ins - Search for SSH Agent

Configure enable SSH Server

Jenkins- System management - Global security configuration , hold SSH Server Set to enable ( The default is disable )

New node

The first way （SSH Key connection ）：

1.Jenkins Host generation SSH secret key

[[email protected] ~]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa
Your public key has been saved in /root/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:oI7S4uwjskL1wGBt04Xq3F2huICMKSZ8jBTfwiROlNk [email protected]
The key's randomart image is:
+---[RSA 3072]----+
|.=*.. o.         |
|o*=E.o   .       |
|*oB+o.o . .      |
|=* O.o o .       |
|+ = * o S        |
| o = + .         |
|+ o .            |
|*+               |
|*=.              |
+----[SHA256]-----+

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2. send out Jenkins Host public key to remote host

[[email protected] ~]# ssh-copy-id 192.168.1.20

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3. test Jenkins The host connects to the remote host without secret

[[email protected] ~]# ssh [email protected]
Last login: Fri Mar  4 10:44:53 2022 from k8s-master
[[email protected] ~]#

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4. add to Jenkins host SSH Private key key For credentials

[[email protected] ~]# cat /root/.ssh/id_rsa
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

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5. Add slave node

Add node page explanation ：

• name ： Customize a node name
• Number of actuators ： Can be executed at the same time job Number of threads , Just write a number
• Teleworking program ： The host machine Workspace Catalog
• label ： Customize , Facilitate later identification
• usage ： Use this node as much as possible
• Starting mode ：Launch agent agents via SSH
• host ： Enter the host to be remote IP Address
• Credentials： take Jenkins Locally generated SSH The public key of the key is sent to the host to be remote , And add Jenkins The private key of the host key Remote connection for credentials
• Host Key Verification Strategy： That's the choice Known hosts file Verification Strategy

The second way ：（ROOT Account secret connection ）

1. Add the name of the remote host ROOT The account and password are credentials

2. Add slave node

Add node page explanation ：

• name ： Customize a node name
• Number of actuators ： Can be executed at the same time job Number of threads , Just write a number
• Teleworking program ： The host machine Workspace Catalog
• label ： Customize , Facilitate later identification
• usage ： Use this node as much as possible
• Starting mode ：Launch agent agents via SSH
• host ： Enter the host to be remote IP Address
• Credentials： Add the host to be remote ROOT Credentials for account and password
• Host Key Verification Strategy： That's the choice Non verifying Verifcation Stragegy