腾讯云centos7安装jdk有java没有javac -bash: javac: 未找到下令 ...

一开始自动安装jdk的时候，输入java -version是有版本的，并且也执行了yum install java-devel。几乎没有标题。末了跑spark的时候，发现javac -version无法执行。搞了很久，末了决定重新安装jdk。再执行yum install java-devel就安装成功了
首先删除现有的jdk

1. [root@VM-12-8-centos jdk8]# yum -y remove tzdata-java.noarch
3. [root@VM-12-8-centos jdk8]# rpm -qa | grep java
4. javapackages-tools-3.4.1-11.el7.noarch
5. java-1.8.0-openjdk-javadoc-1.8.0.362.b08-1.el7_9.noarch
6. python-javapackages-3.4.1-11.el7.noarch
7. java-1.8.0-openjdk-javadoc-zip-1.8.0.362.b08-1.el7_9.noarch
8. [root@VM-12-8-centos jdk8]# ^C
9. [root@VM-12-8-centos jdk8]# rpm -e --nodeps javapackages-tools-3.4.1-11.el7.noarch
10. [root@VM-12-8-centos jdk8]# rpm -e --nodeps java-1.8.0-openjdk-javadoc-1.8.0.362.b08-1.el7_9.noarch
11. [root@VM-12-8-centos jdk8]# rpm -e --nodeps python-javapackages-3.4.1-11.el7.noarch
12. [root@VM-12-8-centos jdk8]# rpm -e --nodeps java-1.8.0-openjdk-javadoc-zip-1.8.0.362.b08-1.el7_9.noarch

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重新安装

1. [root@VM-12-8-centos jdk8]# yum install -y java-1.8.0-openjdk
2. 已加载插件：fastestmirror, langpacks
3. Repository updates is listed more than once in the configuration
4. Repository extras is listed more than once in the configuration
5. Loading mirror speeds from cached hostfile
6. * base: mirrors.aliyun.com
7. 正在解决依赖关系
8. [root@VM-12-8-centos jdk8]# javac -version
9. -bash: javac: 未找到命令
10. [root@VM-12-8-centos jdk8]# java -version
11. openjdk version "1.8.0_362"
12. OpenJDK Runtime Environment (build 1.8.0_362-b08)
13. OpenJDK 64-Bit Server VM (build 25.362-b08, mixed mode)
14. [root@VM-12-8-centos jdk8]# yum install java-devel
15. 已加载插件：fastestmirror, langpacks
16. Repository updates is listed more than once in the configuration
17. Repository extras is listed more than once in the configuration
18. Loading mirror speeds from cached hostfile
19. [root@VM-12-8-centos jdk8]# javac -version
20. javac 1.8.0_362

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