一、CentOS7集群搭建
1.1 准备3台centos7的虚拟机
IP及主机名规划如下：
192.168.123.110 spark1
192.168.123.111 spark2
192.168.123.112 spark3
1.2 修改IP地址
[[email protected] ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33
1.3 修改主机映射
[[email protected] ~]# vi /etc/hosts
1.4 修改主机名
三台机器分别把主机名修改为spark1、spark2、spark3
[[email protected] ~]# vi /etc/hostname
1.5 关闭防火墙
//临时关闭 systemctl stop firewalld //禁止开机启动 systemctl disable firewalld
1.6 修改repo
[[email protected] ~]# cd /etc/yum.repos.d/ [[email protected] yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
如果还有其他源，可以暂且把他们重命名成其他扩展名，比如 CentOS-Base.repo.bak
[[email protected] yum.repos.d]# mv CentOS-Base.repo CentOS-Base.repo.bak
[[email protected] yum.repos.d]# mv CentOS7-Base-163.repo CentOS7-Base.repo [[email protected] yum.repos.d]# yum clean all [[email protected] yum.repos.d]# yum makecache
安装 epel 源
[[email protected] yum.repos.d]# yum install epel-release [[email protected] yum.repos.d]# yum makecache
检查是否安装成功
[[email protected] yum.repos.d]# yum repolist
1.7 配置免密登录
[[email protected] ~]# ssh-keygen -t rsa
三次回车
将spark1上的公钥复制到文件authorized_keys中
[[email protected] ~]# cd .ssh [[email protected] .ssh]# cat id_rsa.pub > authorized_keys
将spark2、和spark3机器上的公钥发送到spark1上
[[email protected] .ssh]# scp -r id_rsa.pub [email protected]:~/spark2.pub [[email protected] .ssh]# scp -r id_rsa.pub [email protected]:~/spark3.pub
在spark1上将spark2、和spark3的公钥追加到authorized_keys中
[[email protected] ~]# cat spark2.pub > .ssh/authorized_keys [[email protected] ~]# cat spark3.pub > .ssh/authorized_keys
在spark1上验证ssh免密登录是否设置成功
二、软件的安装
2.1 JDK的安装
上传并解压
[[email protected] ~]# tar -zxvf jdk-8u73-linux-x64.tar.gz -C apps/
修改环境变量
[[email protected] apps]# vi /etc/profile
#JAVA export JAVA_HOME=/root/apps/jdk1.8.0_73 export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH:$HOME/bin
保存并使其生效
[[email protected] apps]# source /etc/profile
检查
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/9026.html