AWS EC2 Amazon Linux 2023 AMI安裝Jenkins。
事前要求
參考「AWS EC2 建立instance」建立EC2執行個體。硬碟空間要設大一點，測試就用20GB，避免磁碟空間不足導致Jenkins pipeline無法執行。
設定Security Group(Firewall)
建立EC2 instance時有設定security group，也就是防火牆規則。要新增以下傳入規則(inbound rules)以便：
- 本機可以SSH連線進instance。
- 可以用瀏覽器開啟Jenkins的管理介面。
開啟AWS console前往[Security Groups]頁面，點選instance使用的security group名稱進入，在下方的[Inbound rules]頁籤點選[Edit inbound rules]。
在[Edit inbound rules]頁面，點選[Add rule]按鈕新增規則如下：
| Type | Protocol | Port range | Source | |
|---|---|---|---|---|
| SSH | TCP | 22 | My IP | [YOUR_IP] |
| Custom TCP | TCP | 8080 | Anywhere-IPv4 | 0.0.0.0/0 |
設定完後按右下角的[Save rules]按鈕確定。
新增後的inbound rules如下：
安裝Jenkins
參考官方教學，過程如下。
從本機SSH進入EC2 instance的bash。
~% ssh -i ~/Documents/secret/ec2-demo.pem ec2-user@43.207.220.173
The authenticity of host '43.207.220.173 (43.207.220.173)' can't be established.
ED25519 key fingerprint is SHA256:l46nQajU6NiPFpJ+t9kct70LWxWxWrjwME5Y0pTp5TQ.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '43.207.220.173' (ED25519) to the list of known hosts.
, #_
~\_ ####_ Amazon Linux 2023
~~ \_#####\
~~ \###|
~~ \#/ ___ https://aws.amazon.com/linux/amazon-linux-2023
~~ V~' '->
~~~ /
~~._. _/
_/ _/
_/m/'
[ec2-user@ip-172-31-3-166 ~]$
更新套件管理員，輸入sudo yum update –y。
[ec2-user@ip-172-31-3-166 ~]$ sudo yum update –y
設定Jenkins repo，輸入sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo。
[ec2-user@ip-172-31-3-166 ~]$ sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
--2024-03-26 05:06:32-- https://pkg.jenkins.io/redhat-stable/jenkins.repo
Resolving pkg.jenkins.io (pkg.jenkins.io)... 151.101.110.133, 2a04:4e42:1a::645
Connecting to pkg.jenkins.io (pkg.jenkins.io)|151.101.110.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 85
Saving to: ‘/etc/yum.repos.d/jenkins.repo’
/etc/yum.repos.d/jenkins.repo 100%[===================================================================================================================================================================>] 85 --.-KB/s in 0s
2024-03-26 05:06:32 (5.13 MB/s) - ‘/etc/yum.repos.d/jenkins.repo’ saved [85/85]
匯入Jenkins的key file啟用package安裝，輸入sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key。
[ec2-user@ip-172-31-3-166 ~]$ sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key
升級package，輸入sudo yum upgrade。
[ec2-user@ip-172-31-3-166 ~]$ sudo yum upgrade
安裝Java，為Jenkins的運行環境，輸入sudo dnf install java-17-amazon-corretto -y。
[ec2-user@ip-172-31-3-166 ~]$ sudo dnf install java-17-amazon-corretto -y
安裝Jenkins，輸入sudo yum install jenkins -y。
[ec2-user@ip-172-31-3-166 ~]$ sudo yum install jenkins -y
Last metadata expiration check: 0:01:37 ago on Tue Mar 26 05:07:50 2024.
Dependencies resolved.
================================================================================================================================================================================================================================================================================
Package Architecture Version Repository Size
================================================================================================================================================================================================================================================================================
Installing:
jenkins noarch 2.440.2-1.1 jenkins 82 M
Transaction Summary
================================================================================================================================================================================================================================================================================
Install 1 Package
Total size: 82 M
Installed size: 83 M
Downloading Packages:
[SKIPPED] jenkins-2.440.2-1.1.noarch.rpm: Already downloaded
...
Installed:
jenkins-2.440.2-1.1.noarch
Complete!
這邊安裝的Jenkins版本為2.440.2。
讓系統重啟時啟動Jenkins，輸入sudo systemctl enable jenkins。
[ec2-user@ip-172-31-3-166 ~]$ sudo systemctl enable jenkins
啟動Jenkins，輸入sudo systemctl start jenkins。
[ec2-user@ip-172-31-3-166 ~]$ sudo systemctl start jenkins
檢視Jenkins狀態，輸入sudo systemctl status jenkins。
[ec2-user@ip-172-31-3-166 ~]$ sudo systemctl status jenkins
● jenkins.service - Jenkins Continuous Integration Server
Loaded: loaded (/usr/lib/systemd/system/jenkins.service; enabled; preset: disabled)
Active: active (running) since Tue 2024-03-26 05:12:41 UTC; 57min ago
Main PID: 26777 (java)
Tasks: 41 (limit: 1114)
Memory: 554.9M
CPU: 1min 26.363s
CGroup: /system.slice/jenkins.service
└─26777 /usr/bin/java -Djava.awt.headless=true -jar /usr/share/java/jenkins.war --webroot=/var/cache/jenkins/war --httpPort=8080
登入Jenkins
在瀏覽器輸入http://[PUBPLIC_IP]:8080進入Jenkins。[PUBLIC_IP]為instance的公開IP。例如這邊為http://43.207.220.173:8080。
第一次登入預設密碼放在/var/lib/jenkins/secrets/initialAdminPassword，輸入sudo cat /var/lib/jenkins/secrets/initialAdminPassword檢視。
[ec2-user@ip-172-31-3-166 ~]$ sudo cat /var/lib/jenkins/secrets/initialAdminPassword
7e3b2760a8f14a719a37f0f208e0d92c
點選[Install suggested plugins]安裝建議插件。
安裝插件中。
建立第一個管理員帳號。
更改URL位址，無特別需要就直接按[Save and Finish]按鈕。
完成基本設定，點選[Start using Jenkins]按鈕。
Jenkins首頁。
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