集群基础环境初始化

1、准备虚拟机

192.168.1.7 
192.168.1.6
192.168.1.183

2、切换为国内centos源

3、修改sshd服务优化

[root@elk01 ~]# sed -i 's/#UseDNS yes/UseDNS no/g' /etc/ssh/sshd_config
[root@elk01 ~]# sed -i 's/GSSAPIAuthentication yes/GSSAPIAuthentication no/g' /etc/ssh/sshd_config 
[root@elk01 ~]# grep ^UseDNS /etc/ssh/sshd_config 
UseDNS no
[root@elk01 ~]# grep ^GSSAPIAuthentication /etc/ssh/sshd_config 
GSSAPIAuthentication no

 4、关闭防火墙

[root@elk02 ~]# systemctl disable --now firewalld
[root@elk02 ~]# systemctl is-enabled firewalld
[root@elk02 ~]# systemctl status firewalld

 5、禁用Selinux

[root@elk01 ~]# sed -i 's/enforcing/disabled/g' /etc/selinux/config 
[root@elk01 ~]# grep ^SELINUX = /etc/selinux/config 
[root@elk01 ~]# setenforce 0
[root@elk01 ~]# getenforce 
Permissive

6、配置集群免密登录及同步脚本

  1、修改主机列表

[root@elk01 ~]# cat >>/etc/hosts<<'EOF'
> 192.168.1.7 elk01.cm.com
> 192.168.1.183 elk02.cm.com
> 192.168.1.6 elko3.cm.com
> EOF

  2、在elk01节点上生成密钥对

[root@elk01 ~]# ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa -q
[root@elk01 ~]# ll ~/.ssh/
total 12
-rw-------. 1 root root 1679 Feb 14 15:04 id_rsa               #私钥
-rw-r--r--. 1 root root  399 Feb 14 15:04 id_rsa.pub          #公钥
    

  3、elk01上配置所有集群节点的免密登录

[root@elk01 ~]# for host_id in 01 02 03;do ssh-copy-id elk${host_id}.cm.com;done

  4、连接测试

[root@elk01 ~]# ssh 'elk03.cm.com'
Last login: Tue Feb 14 10:53:32 2023 from 192.168.1.8
[root@elk03 ~]# logout
Connection to elk03.cm.com closed.
[root@elk01 ~]# ssh 'elk02.cm.com'
Last login: Tue Feb 14 10:53:17 2023 from 192.168.1.8

  5、所有节点安装rsync数据同步工具

[root@elk01 ~]# yum install rsync -y

  6、编写同步脚本

[root@elk01 ~]# vim /usr/local/sbin/data_rsync.sh

#!/bin/bash
#Auther:cm
if [ $# -ne 1 ];then
	echo "Usage: $0 /path/to/file(绝对路径)"
	exit
fi

#判断文件是否存在
if [ ! -e $1 ];then	
	echo "[ $1 ] dir or file not find!"
	exit
fi

#获取父路径
fullpath=`dirname $1`
#获取子路径
basename=`basename $1`

#进入父路径
cd $fullpath

for host_id in 01 02 03
	do
		#是的输出变成绿色
		tput setaf 2
		echo =====rsyncing elk${host_id}.cm.com:$basename =====
		#使得终端恢复原来颜色
		tput setaf 7
		#将数据同步到其他两个节点
		rsync -az $basename `whoami`@elk${host_id}.cm.com:$fullpath
		if [ $? -eq 0 ];then
			echo "命令执行成功"
		fi
done	

 7、给脚本授权

[root@elk01 ~]# chmod +x /usr/local/sbin/data_rsync.sh

 8、测试

[root@elk01 ~]# mkdir /tmp/test/
[root@elk01 ~]# touch /tmp/test/test.txt
[root@elk01 ~]# echo 111 > /tmp/test/test.txt
[root@elk01 ~]# data_rsync.sh /tmp/test/
=====rsyncing elk01.cm.com:test =====
命令执行成功!
=====rsyncing elk02.cm.com:test =====
命令执行成功!
=====rsyncing elk03.cm.com:test =====
命令执行成功!
[root@elk02 ~]# ll /tmp/test/test.txt
-rw-r--r--. 1 root root 4 Feb 14 16:06 /tmp/test/test.txt
[root@elk02 ~]# cat /tmp/test/test.txt 
111

  

7、集群时间同步

  1、安装常用的Linux工具

yum install vim net-tools

  2、安装chrony服务

yum install ntpdate chrony -y

  3、修改chrony服务文件

[root@elk01 ~]# vim /etc/chrony.conf 
#注释官方时间服务器,换成阿里云时间服务器
#server 0.centos.pool.ntp.org iburst
#server 1.centos.pool.ntp.org iburst
#server 2.centos.pool.ntp.org iburst
#server 3.centos.pool.ntp.org iburst
server ntp1.aliyun.com iburst
server ntp2.aliyun.com iburst
server ntp3.aliyun.com iburst
server ntp4.aliyun.com iburst
server ntp5.aliyun.com iburst
server ntp6.aliyun.com iburst
server ntp7.aliyun.com iburst

  4、配置chronyd开机自启动 或重启服务

[root@elk01 ~]# systemctl restart chronyd
[root@elk01 ~]# systemctl enable --now chronyd

  5、查看服务

systemctl status chronyd

  

 

 

posted on 2023-02-14 17:16  草根920  阅读(27)  评论(0编辑  收藏  举报