jenkins 这货启动不起来，怎么搞

[wsds]

启动的时候，提示存在不正确的 java1.7 版本，但我的版本是 1.8 啊，什么鬼，启动不起来

root@root-59:~$ ps -ef|grep jenkins

root 25034  1931  0 11:26 pts/17   00:00:00 grep --color=auto jenkins

root@root-59:~$ sudo service jenkins start
[sudo] password for root: 

Found an incorrect Java version
Java version found:
java version "1.7.0_171"
OpenJDK Runtime Environment (IcedTea 2.6.13) (7u171-2.6.13-0ubuntu0.14.04.2)
OpenJDK 64-Bit Server VM (build 24.171-b02, mixed mode)

Aborting

root@root-59:~$ java -version

java version "1.8.0_66"
Java(TM) SE Runtime Environment (build 1.8.0_66-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.66-b17, mixed mode)
root@root-59:~$ 

find出来一个1。7版本的jdk，但我默认的还是1。8啊

jenkins日志:

[UndefinedDiary]

Jenkins 什么版本的？？去官网看看依赖的 jdk 需要那个版本。。。

[wsds]

@UndefinedDiary 前 2 天还运行的好好的，不知道怎么停了，然后就启动不了了，应该不是版本问题吧

[defunct9]

开 ssh，让我上去看看

[wsds]

@defunct9 内网啊

[UndefinedDiary]

@wsds 有多个 jdk ？！

[ming2050]

因为你用 sudo 了 搜下 sudo 环境变量 了解一下

[wanghanlin]

用 docker 的，省力

[wsds]

@UndefinedDiary 目测至少有 2 个

[wsds]

@mringg 用不用 sudo 都一样

[qinxi]

卸载 openjdk，结帖

[privatezcoding]

设置一下 Java 的环境变量试试看

[carlclone]

关机睡觉，结贴

[zqcolor]

试试下面几个命令选择 java 8

https://askubuntu.com/questions/315646/update-java-alternatives-vs-update-alternatives-config-java

sudo update-alternatives --config java
sudo update-alternatives --config javac
sudo update-alternatives --config javadoc

[wsds]

@zqcolor 没用啊

root@root-59:~$ sudo update-alternatives --config java
[sudo] password for root:

There is only one alternative in link group java (providing /usr/bin/java): /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java
Nothing to configure.

root@root-59:~$ sudo update-alternatives --config javac
update-alternatives: error: no alternatives for javac

root@root-59:~$ sudo update-alternatives --config javadoc
update-alternatives: error: no alternatives for javadoc

[shynome]

如果只做 ci/cd , 可以试试 drone.io

[qkline]

明显是 openjdk 搞的鬼，卸载就行了

[sutra]

root@jenkins:~ # grep java_home /usr/local/etc/rc.d/jenkins
# jenkins_java_home (str):
: ${jenkins_java_home="/usr/local/openjdk8"}
java_cmd="${jenkins_java_home}/bin/java"

[defunct9]

@wsds 开不了 ssh，我也没办法。明显 jenkins 的 java 和你起的不是一个。

[vjnjc]

Jenkins 的用户和你不是同一个，所以你们的环境也不一样，所以他用 Java7，你用 Java8

[kaneg]

因为系统环境的千差万别，这种 Java 多版本引起的问题很常见，所以用 docker 这种专门解决环境差异的方案是终极解决之道

[zhantss]

安装版的 jenkins，默认是创建了一个 jenkins 用户，改这个用户的配置就行
防止发生意外可以改 /etc/default/jenkins 里面的设置，不一定是这个位置，你可以查一下对应软件包的配置文件位置

[tedzhou1221]

Docker Jenkins 更方便，哈哈

[zqcolor]

那就卸载这个 openjdk7
/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java

然后安装 jdk 8 试试

[wsds]

@zhantss 有这个文件，要改什么内容啊

# defaults for Jenkins automation server

# pulled in from the init script; makes things easier.
NAME=jenkins

# arguments to pass to java

# Allow graphs etc. to work even when an X server is present
JAVA_ARGS="-Djava.awt.headless=true"

#JAVA_ARGS="-Xmx256m"

# make jenkins listen on IPv4 address
#JAVA_ARGS="-Djava.net.preferIPv4Stack=true"

PIDFILE=/var/run/$NAME/$NAME.pid

# user and group to be invoked as (default to jenkins)
JENKINS_USER=$NAME
JENKINS_GROUP=$NAME

# location of the jenkins war file
JENKINS_WAR=/usr/share/$NAME/$NAME.war

# jenkins home location
JENKINS_HOME=/var/lib/$NAME

# set this to false if you don't want Jenkins to run by itself
# in this set up, you are expected to provide a servlet container
# to host jenkins.
RUN_STANDALONE=true

# log location. this may be a syslog facility.priority
JENKINS_LOG=/var/log/$NAME/$NAME.log
#JENKINS_LOG=daemon.info

# Whether to enable web access logging or not.
# Set to "yes" to enable logging to /var/log/$NAME/access_log
JENKINS_ENABLE_ACCESS_LOG="no"

# OS LIMITS SETUP
# comment this out to observe /etc/security/limits.conf
# this is on by default because http://github.com/jenkinsci/jenkins/commit/2fb288474e980d0e7ff9c4a3b768874835a3e92e
# reported that Ubuntu's PAM configuration doesn't include pam_limits.so, and as a result the # of file

[wsds]

@zqcolor 公用环境，不能乱卸载组件啊

[wsds]

https://t1.picb.cc/uploads/2018/05/15/23ICz0.png

[zqcolor]

网上查的，可以试试看

https://stackoverflow.com/questions/49367311/start-jenkins-with-jdk-8-without-changing-system-java-home


Set JENKINS_JAVA option in /etc/sysconfig/jenkins file.

The variable name might be different depending on your operating system and package source but the /etc/sysconfig/jenkins file is usually the configuration file for your jenkins service.

[wsds]

还是不行啊

[RX03]

两年了。。。
我自己这样暴力设置可以起来
1. cd /etc/init.d 2. sudo vim jenkins 3. 注释掉 PATH 部分，因为之前编译多个版本的 AOSP，java 环境乱的压批，在 /etc/profile 里 export 了，在这里直接加上 source /etc/profile
ubuntu@linux:/etc/init.d$ ./jenkins -> Correct java version found
最后，docker 大法好

[TreePu]

1，安装 jdk1.8

[TreePu]

1，安装 JDK1.8：sudo apt-get install openjdk-8-jdk
2，切换 JDK 版本：sudo update-alternatives --config java 输入数字，Enter
3，修改 Jenkins 配置文件的 PATH 为 1.8 的路径
sudo vi /etc/init.d/jenkins
## PATH=/bin:/usr/bin:/sbin:/usr/sbin 旧的
PATH=/usr/lib/jvm/java-8-openjdk-amd64/bin/java 新的
4，重启 Jenkins，成功

今天遇到了，把解决过程分享一下