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The yum command manages the the dependences, that's why we use it instead of rpm.
You can If check you have the right version on your system and your version you should see something like that.
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$ java -version java version "1.8.0_151" Java(TM) SE Runtime Environment (build 1.8.0_151-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode) |
If no you may have OpenJDK installed by default on your system, like this.
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$ java -version openjdk version "1.8.0_151" OpenJDK Runtime Environment (build 1.8.0_151-b12) OpenJDK 64-Bit Server VM (build 25.151-b12, mixed mode) |
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$ sudo alternatives --config java There are 3 programs which provide 'java'. Sélection Commande ---------------------------------------------- * 1 java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-1.b12.el7_4.x86_64/jre/bin/java) 2 java-1.7.0-openjdk.x86_64 (/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.161-2.6.12.0.el7_4.x86_64/jre/bin/java) + 3 /usr/java/jdk1.8.0_151/jre/bin/java Enter to keep the current selection[+], or type selection number:3 |
Now you are using the Oracle Java8.
For maven I followed this guide instead: http://preilly.me/2013/05/10/how-to-install-maven-on-centos/
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$ echo 0 >/selinux/enforce
$ vi /etc/selinux/config # replace "SELINUX=enforcing" to "SELINUX=disabled" |
Configure Firewalld and SELinux (Centos 7)
CentOS 7 is using a new firewall interface, Firewalld. As for Centos 6.X system we disable them.
Deactivate Firewalld
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$ sudo systemctl stop firewalld
$ sudo systemctl disabled firewalld |
Deactivate SELinux
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$ sudo setenforce 0
$ vi /etc/selinux/config # replace "SELINUX=enforcing" to "SELINUX=disabled" |
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