jenkins upgrade후 해주어야 할 것들 java11

기존 jenkins를 2.1XX.X 버전을 사용하고 있었는데 현재 기준 최신버전 2.426.2 버전으로 업그레이드를

하고 나니 jenkins가 실행이 아니 된다...

하여 해결했던 과정을 정리해 본다.

1. jenkins 최신버전 war파일 다운로드.

https://get.jenkins.io/war-stable/2.426.2/jenkins.war

 

2. 기존 jenkins.war 파일 백업 및 다운로드한 jenkins.war 파일로 교체 작업은 /home/graykang 에서 한다.

백업 # cp /usr/share/java/jenkins.war ./jenkins.backup.war

교체 # cp ./jenkins.war /usr/share/java/

 

3. 2번까지 하고 jenkins를 실행하면 아래와 같은 오류가 빡 발생한다.

]# systemctl start jenkins
Job for jenkins.service failed because the control process exited with error code. See "systemctl status jenkins.service" and "journalctl -xe" for details.
]#

 

겁내 구글링을 해본 결과 음... jenkins의 실행 포트문제 또는 JAVA버전문제라고...

 

4. jenkins.service 상태를 확인하면 아래와 같이 나온다.

]# systemctl status jenkins.service
● jenkins.service - Jenkins Continuous Integration Server
   Loaded: loaded (/usr/lib/systemd/system/jenkins.service; disabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/jenkins.service.d
           └─override.conf
   Active: failed (Result: start-limit) since 수 2024-01-17 15:56:25 KST; 56min ago
  Process: 7360 ExecStart=/usr/bin/jenkins (code=exited, status=1/FAILURE)
 Main PID: 7360 (code=exited, status=1/FAILURE)

 1월 17 15:56:25 localhost.localdomain systemd[1]: jenkins.service: main process exited, code=exited, status=1/FAILURE
 1월 17 15:56:25 localhost.localdomain systemd[1]: Failed to start Jenkins Continuous Integration Server.
 1월 17 15:56:25 localhost.localdomain systemd[1]: Unit jenkins.service entered failed state.
 1월 17 15:56:25 localhost.localdomain systemd[1]: jenkins.service failed.
 1월 17 15:56:25 localhost.localdomain systemd[1]: jenkins.service holdoff time over, scheduling restart.
 1월 17 15:56:25 localhost.localdomain systemd[1]: Stopped Jenkins Continuous Integration Server.
 1월 17 15:56:25 localhost.localdomain systemd[1]: start request repeated too quickly for jenkins.service
 1월 17 15:56:25 localhost.localdomain systemd[1]: Failed to start Jenkins Continuous Integration Server.
 1월 17 15:56:25 localhost.localdomain systemd[1]: Unit jenkins.service entered failed state.
 1월 17 15:56:25 localhost.localdomain systemd[1]: jenkins.service failed.
]#

 음...failed 라네.... 구글링을 통해 습득한 정보를 토대로 ㄱㄱㄱ

 

4. yum으로 openjdk-11을 설치해 준다.

]# yum install -y java-11-openjdk-devel.x86_64
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: ftp.kaist.ac.kr
 * extras: ftp.kaist.ac.kr
 * updates: ftp.kaist.ac.kr
Resolving Dependencies
There are unfinished transactions remaining. You might consider running yum-complete-transaction, or "yum-complete-transaction --cleanup-only" and "yum history redo last", first to finish them. If those don't work you'll have to try removing/installing packages by hand (maybe package-cleanup can help).
--> Running transaction check
---> Package java-11-openjdk-devel.x86_64 1:11.0.21.0.9-1.el7_9 will be installed
--> Processing Dependency: java-11-openjdk(x86-64) = 1:11.0.21.0.9-1.el7_9 for package: 1:java-11-openjdk-devel-11.0.21.0.9-1.el7_9.x86_64
--> Running transaction check
---> Package java-11-openjdk.x86_64 1:11.0.21.0.9-1.el7_9 will be installed
--> Processing Dependency: java-11-openjdk-headless(x86-64) = 1:11.0.21.0.9-1.el7_9 for package: 1:java-11-openjdk-11.0.21.0.9-1.el7_9.x86_64
--> Running transaction check
---> Package java-11-openjdk-headless.x86_64 1:11.0.21.0.9-1.el7_9 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

===============================================================================================================================================================================================================================================================================
 Package                                                                    Arch                                                     Version                                                                   Repository                                                 Size
===============================================================================================================================================================================================================================================================================
Installing:
 java-11-openjdk-devel                                                      x86_64                                                   1:11.0.21.0.9-1.el7_9                                                     updates                                                   3.4 M
Installing for dependencies:
 java-11-openjdk                                                            x86_64                                                   1:11.0.21.0.9-1.el7_9                                                     updates                                                   242 k
 java-11-openjdk-headless                                                   x86_64                                                   1:11.0.21.0.9-1.el7_9                                                     updates                                                    39 M

Transaction Summary
===============================================================================================================================================================================================================================================================================
Install  1 Package (+2 Dependent packages)

Total download size: 43 M
Installed size: 170 M
Downloading packages:
(1/3): java-11-openjdk-11.0.21.0.9-1.el7_9.x86_64.rpm                                                                                                                                                                                                   | 242 kB  00:00:00
(2/3): java-11-openjdk-devel-11.0.21.0.9-1.el7_9.x86_64.rpm                                                                                                                                                                                             | 3.4 MB  00:00:00
(3/3): java-11-openjdk-headless-11.0.21.0.9-1.el7_9.x86_64.rpm                                                                                                                                                                                          |  39 MB  00:00:03
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                                                                                                                                           10 MB/s |  43 MB  00:00:04
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : 1:java-11-openjdk-headless-11.0.21.0.9-1.el7_9.x86_64                                                                                                                                                                                                       1/3
  Installing : 1:java-11-openjdk-11.0.21.0.9-1.el7_9.x86_64                                                                                                                                                                                                                2/3
  Installing : 1:java-11-openjdk-devel-11.0.21.0.9-1.el7_9.x86_64                                                                                                                                                                                                          3/3
  Verifying  : 1:java-11-openjdk-headless-11.0.21.0.9-1.el7_9.x86_64                                                                                                                                                                                                       1/3
  Verifying  : 1:java-11-openjdk-11.0.21.0.9-1.el7_9.x86_64                                                                                                                                                                                                                2/3
  Verifying  : 1:java-11-openjdk-devel-11.0.21.0.9-1.el7_9.x86_64                                                                                                                                                                                                          3/3

Installed:
  java-11-openjdk-devel.x86_64 1:11.0.21.0.9-1.el7_9

Dependency Installed:
  java-11-openjdk.x86_64 1:11.0.21.0.9-1.el7_9                                                                                      java-11-openjdk-headless.x86_64 1:11.0.21.0.9-1.el7_9

Complete!
]#

 

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5. jenkins.service 내용 수정.

centos7의 기본 JAVA_HOME 설정은 jdk1.8로 되어있는 상태이고 추가로 jdk11을 설치한 상태이며 이 상태에서 

jenkins가 구동될 때만 jdk11을 바라보도록 해준다.

yum으로 jdk를 설치할 경우 보통 /usr/lib/jvm/ 경로에 설치가 된다.

]# vi /usr/lib/systemd/system/jenkins.service

 

수정한 부분: jdk11 경로 설정 및 jenkins의 포트설정.

# The Java home directory. When left empty, JENKINS_JAVA_CMD and PATH are consulted.
Environment="JAVA_HOME=/usr/lib/jvm/java-11-openjdk-11.0.21.0.9-1.el7_9.x86_64/"

# Port to listen on for HTTP requests. Set to -1 to disable.
# To be able to listen on privileged ports (port numbers less than 1024),
# add the CAP_NET_BIND_SERVICE capability to the AmbientCapabilities
# directive below.
Environment="JENKINS_PORT=9100"

 

위와 같이 설정해 주고 실행하니 아주 잘 된다. ㅎㅎ http://localhost:9100/으로 접근하면 새로 바뀐 로그인 화면이 뜨고

로그인하면 기존에 등록했던 Job들도 잘 보인다.

 

참고로 이 글을 작성하는 기준 24년 6월에 CentOS7 지원이 공식 적으로 중단된다고 한다 ㅠㅜ;;

나만 몰랐던것 같다 ㅠㅜ;;;

한바탕 뒤집어질 것 같다;;;;;