jenkins 启动时报错：Starting Jenkins bash: /usr/bin/java: No such file or directory

安装jekins：

wget -O /etc/yum.repos.d/jenkins.repohttps://pkg.jenkins.io/redhat-stable/jenkins.repo

rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key

yum install jenkins 

执行

servicejenkins start 时，报错如下：

按照提示执行：systemctl status jenkins.service，提示如下：

发现是找不到jdk，修改文件：

vim  /etc/init.d/jenkins

1. candidates="
   /setup/tools/jdk1.8.0_144/bin/java #此处为加入的java路径
   /etc/alternatives/java
   /usr/lib/jvm/java-1.8.0/bin/java
   /usr/lib/jvm/jre-1.8.0/bin/java
   /usr/lib/jvm/java-1.7.0/bin/java
   /usr/lib/jvm/jre-1.7.0/bin/java
   /usr/bin/java

vim /etc/sysconfig/jenkins

1. do  
2.   [ -x "$JENKINS_JAVA_CMD" ] && break  
3.   JENKINS_JAVA_CMD="$candidate"  
4. done  

重新执行：

[root@mircoserver data]# systemctl daemon-reload
[root@mircoserver data]# service jenkins start 

问题解决。