一.环境准备

1.修改hostname(所有节点)

• 临时生效

  [root@localhost ~] hostname localhost

• 永久生效

  [root@localhost ~] vi /etc/hosts127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4::1         localhost localhost.localdomain localhost6 localhost6.localdomain6192.168.31.11 hdm01.xx.cn hdm01192.168.31.12 hdm02.xx.cn hdm02192.168.31.13 hddata01.xx.cn hddata01

2.配置SSH免密(所有节点)

• 生成秘钥(所有节点都生成一份)

  [root@localhost ~] cd ~[root@localhost ~] mkdir .ssh[root@localhost ~] cd .ssh[root@localhost .ssh] ssh-keygen -t rsa #生成秘钥

• 配置免密互通(主节点下操作)

  [root@localhost .ssh] cat id_rsa.pub >> authorized_keys#分别把上一步各个节点生成的公共秘钥追加到主节点的/root/.ssh/authorized_keys中[root@localhost .ssh] ssh hostname cat /root/.ssh/id_rsa.pub >> authorized_keys #把主节点上已汇总到所有节点公共秘钥的/root/.ssh/authorized_keys分发到各个节点/root/.ssh/下[root@localhost .ssh] scp ./authorized_keys hostname:/root/.ssh/ [root@localhost .ssh] chmod 600 ~/.ssh[root@localhost .ssh] chmod 600 ~/.ssh/authorized_keys

3.开启NTP服务(所有节点)

• 关闭chronyd服务

  #临时关闭[root@localhost ~] systemctl stop chronyd    #永久关闭 [root@localhost ~] systemctl disable chronyd

• 开启NTP服务

  #查看是否已安装NTP[root@localhost ~] rpm -qa |grep ntp#如未安装，则安装NTP    [root@localhost ~] yum install ntp#启动NTP服务[root@localhost ~] systemctl start ntpd#开启开机自动启动NTP服务[root@localhost ~] systemctl enable ntpd#查看NTP服务状态[root@localhost ~] systemctl status ntpd

4.配置FQDN(所有节点)

[root@localhost ~] vim /etc/sysconfig/networkNETWORKING=yesHOSTNAME=localhost

5.允许HTTP通过防火墙(所有节点)

[root@localhost ~] rpm -qa |grep http                          #查看是否安装http[root@localhost ~] yum -y install httpd                        #如未安装，则安装[root@localhost ~] firewall-cmd --add-service=http             #临时开放http[root@localhost ~] firewall-cmd --permanent --add-service=http #永久开放http[root@localhost ~] systemctl start httpd.service               #临时添加服务随系统自动启动[root@localhost ~] systemctl enable httpd.service              #永久添加服务随系统自动启动