keepalived+nginx+tomcat高可用

小何学计算机2025-03-22 13:41

1.要求

角色 主机名 软件 IP地址
用户 client 192.168.72.90
keepalived vip 192.168.72.100
master master keepalived, nginx 192.168.72.30
backup backup keepalived, nginx 192.168.72.32
web tomcat1 tomcat 192.168.72.41
web tomcat2 tomcat 192.168.72.42

1.搭建Tomcat

1.1下载jdk

wget https://download.oracle.com/java/21/latest/jdk-21_linux-x64_bin.tar.gz
1.2.查看文件以及解压文件

bash 复制代码 
ls

anaconda-ks.cfg jdk-21_linux-x64_bin.tar.gz

bash 复制代码 
tar -xzf  jdk-21_linux-x64_bin.tar.gz -C  /usr/local
bash 复制代码 
ls /usr/local/jdk-21.0.6/

bin conf include jmods legal lib LICENSE man README release

1.3配置jdk

bash 复制代码 
vim /etc/profile
cat /etc/profile
export JAVA_HOME=/usr/local/jdk-21.0.6/
export PATH=$PATH:$JAVA_HOME/bin

1.4刷新文件配置生效

bash 复制代码 
source /etc/profile

1.5验证jdk是否生效

bash 复制代码 
java -version

1.6关闭防火墙以及selinux

bash 复制代码 
systemctl disabled firewalld
setenforce 0

2.在tomact1安装配置Tomact

2.1下载tomact

bash 复制代码 
wget https://dlcdn.apache.org/tomcat/tomcat-11/v11.0.5/bin/apache-tomcat-11.0.5.tar.gz

2.2查看文件并解压

bash 复制代码 
ls

anaconda-ks.cfg apache-tomcat-11.0.5.tar.gz

jdk-21_linux-x64_bin.tar.gz

bash 复制代码 
tar -xzf  apache-tomcat-11.0.5.tar.gz  -C /usr/local
ls /usr/local

2.3配置tomact相关环境

bash 复制代码 
vim /etc/profile
cat /etc/profile
export TOMACT_HOME=/usr/local/apache-tomcat-11.0.5
export PATH=$PATH:$TOMACT_HOME/bin

2.4刷新配置

bash 复制代码 
source /etc/profile

2.5启动tomact

bash 复制代码 
startup.sh

3.在tomact2上安装jdk以及tomact

3.1复制jdk安装目录

bash 复制代码 
scp  -r /usr/local/jdk-21.0.6/ root@10.10.10.42:/usr/local/ >/dev/null

3.2复制tomact安装目录

bash 复制代码 
scp  -r /usr/local/apache-tomcat-11.0.5/ root@10.10.10.42:/usr/local > /dev/null

3.3复制/etc/profile文件

bash 复制代码 
 scp /etc/profile root@10.10.10.42:/etc/profile/

3.4验证复制的目录

bash 复制代码 
ls /usr/local

bin etc games include jdk-21.0.6 lib lib64 libexec sbin share

src apache-tomcat-11.0.5

3.5刷新/etc/profile

bash 复制代码 
source /etc/profile
java -version

3.6启动tomact

bash 复制代码 
startup.sh

Using CATALINA_BASE: /usr/local/tomcat-11.0.5 Using CATALINA_HOME:

/usr/local/tomcat-11.0.5 Using CATALINA_TMPDIR:

/usr/local/tomcat-11.0.5/temp Using JRE_HOME:

/usr/local/jdk-21.0.6/ Using CLASSPATH:

/usr/local/tomcat-11.0.5/bin/bootstrap.jar:/usr/local/tomcat-11.0.5/bin/tomcat-juli.jar Using CATALINA_OPTS: Tomcat started.

4.修改tomact主页

4.1修改tomact1主页

bash 复制代码 
cd /usr/local/apache-tomcat-11.0.5/webapps/
bash 复制代码 
ls

docs examples host-manager manager ROOT

bash 复制代码 
rm -rf  docs  examples  host-manager  manager
bash 复制代码 
cd /ROOT
rm -rf *
bash 复制代码 
vim index.jsp
cat index.jsp
tomact1 10.10.10.41

4.2修改tomact2主页

bash 复制代码 
cd /usr/local/apache-tomcat-11.0.5/webapps/
ls

docs examples host-manager manager ROOT

bash 复制代码 
rm -rf docs  examples  host-manager  manager
bash 复制代码 
cd /ROOT
rm -rf *
vim index.jsp
cat index.jsp
tpmact 10.10.10.42
bash 复制代码 
curl 10.10.10.42:8080

tomact 10.10.10.42

5.搭建nginx服务

5.1在master上搭建nginx服务

5.1.1配置仓库

bash 复制代码 
vim /etc/yum/repos.d/master.repo
cat etc/yum/repos.d/master.repo
[BaseOS]
name=BaseOS
baseurl=/mnt/BaseOS
gpgcheck=0
[AppStream]
name=AppStream
baseurl=/mnt/AppStream
gpgcheck=0

5.1.2挂载仓库

bash 复制代码 
mount /dev/sr0 /mnt

5.1.3 下载nginx服务

bash 复制代码 
dnf install nginx -y

5.1.4 配置nginx

bash 复制代码 
vim /etc/nginx/conf.d/master.conf
cat /etc/nginx/conf.d/master.conf
upstream tomact1{
	server_name 10.10.10.41:8080;
	server_name 10.10.10.42:8080;
}
server{
	server_name 10.10.10.30;
	listen 80;
	access_log /var/log/nginx/master_access.log;
	error_log /var/log/nginx/master_error.log;
	location / {
			proxy_pass http://tomact1;
		}
}

5.1.5启动nginx服务

bash 复制代码 
systemctl start nginx

5.1.6测试

bash 复制代码 
curl http://10.10.10.30

tomact1 10.10.10.41

bash 复制代码 
curl http://10.10.10.30

tomact2 10.10.10.42

5.2在backup上搭建nginxf服务

5.2.1配置仓库

bash 复制代码 
vim /etc/yum/repos.d/master.repo
cat etc/yum/repos.d/master.repo
[BaseOS]
name=BaseOS
baseurl=/mnt/BaseOS
gpgcheck=0
[AppStream]
name=AppStream
baseurl=/mnt/AppStream
gpgcheck=0

5.2.2挂载仓库

bash 复制代码 
mount /dev/sr0 /mnt

5.2.3 下载nginx服务

bash 复制代码 
dnf install nginx -y

5.2.4 配置nginx

bash 复制代码 
vim /etc/nginx/conf.d/backup.conf
cat /etc/nginx/conf.d/backup.conf
upstream tomact2 {
	server 10.10.10.41:8080;
	server 10.10.10.42:8080;
	}
	server {
		server_name 10.10.10.42;
		listen 80;
		access_log /var/log/nginx/baskup_access.log;
		error_log /var/log/nginx/backup_error.log;
		location / {
			proxy_pass http://tomact2;
			}
		}

5.2.5启动nginx服务

bash 复制代码 
systemctl start nginx

5.2.6测试

bash 复制代码 
curl 10.10.10.32

tomact1 10.10.10.41

bash 复制代码 
curl 10.10.10.32

tomact2 10.10.10.42

6.搭建keepalived

6.1在master上搭建keepalived

6.1.1下载keepalived服务

bash 复制代码 
dnf install keepalived -y

6.1.2配置keepalived文件

bash 复制代码 
vim /etc/keepalived/keepalived.conf
cat /etc/keepalived/keepalived.conf
global_defs {
   router_id  master
}

vrrp_instance VI_1 {
    state MASTER
    interface ens160
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.10.10.100
    }
}

6.2在backup上配置keepalived

6.2.1下载keepalived服务

bash 复制代码 
dnf install keepalived -y

6.2.2配置keepalived文件

bash 复制代码 
vim /etc/keepalived/keepalived.conf
cat /etc/keepalived/keepalived.conf
global_defs {
   router_id  backup
}

vrrp_instance VI_1 {
    state BACKUP
    interface ens160
    virtual_router_id 51
    priority 90
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.10.10.100
    }
}

6.3启动keepalived服务

master:

bash 复制代码 
systemctl start keepalived

backup:

bash 复制代码 
systemctl start keepalived

6.4 修改nginx文件

bash 复制代码 
vim /etc/nginx/conf.d/master.conf
cat /etc/nginx/conf.d/master.conf
upstream tomact2 {
	server 10.10.10.41:8080;
	server 10.10.10.42:8080;
	}
	server {
		server_name 10.10.10.100;
		listen 80;
		access_log /var/log/nginx/baskup_access.log;
		error_log /var/log/nginx/backup_error.log;
		location / {
			proxy_pass http://tomact2;
			}
		}
bash 复制代码 
vim /etc/nginx/conf.d/backup.conf
cat /etc/nginx/conf.d/backup.conf
upstream tomact2 {
	server 10.10.10.41:8080;
	server 10.10.10.42:8080;
	}
	server {
		server_name 10.10.10.100;
		listen 80;
		access_log /var/log/nginx/baskup_access.log;
		error_log /var/log/nginx/backup_error.log;
		location / {
			proxy_pass http://tomact2;
			}
		}

6.5重启nginx服务

bash 复制代码 
systemctl reatart nginx
curl 10.10.10.100

tomact1 10.10.10.41

bash 复制代码 
curl 10.10.10.100

tomact2 10.10.10.42

7.配置nginx高可用

7.1 编写检测脚本

bash 复制代码 
vim /etc/keepalived/check_nginx.sh
#!/bin/bash
counter=$(ps -c nginx --no-header | wc -l)
if [$counter -eq 0];then
	systemctl start nginx
	if [	`ps -C nginx --no-header | wc -l` -eq 0]; rhen
	systemctl stop keepalived
	fi
fi

7.2给脚本赋予执行权限

bash 复制代码 
chmod +x /etc/keepalived/check_nginx.sh

7.3将脚本文件复制到backup主机中

bash 复制代码 
scp /etc/keepalived/check_nginx.sh root@10.10.10.32:/etc/keepalived/

7.4在backup中验证

bash 复制代码 
ll /etc/keepalived

-rwxr-xr-x. 1 root root 191 Mar 20 21:15 check_nginx.sh

-rw-r--r--. 1 root root 286 Mar 20 20:58 keepalived.conf

7.5修改master主机上keepalived.conf文件

bash 复制代码 
vim /etc/keepalived/keepalived.conf
global_defs {
   router_id  master
}

vrrp_script check_nginx{
	script "/etc/keepalived/check_nginx.sh"
	interval 2
	}
vrrp_instance VI_1 {
    state MASTER
    interface ens160
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.10.10.100
    }
    track_script {
    	check_nginx
    	}
}

7.6修改backup中keepalived.conf文件

bash 复制代码 
vim /etc/keepalived/keepalived.conf
global_defs {
   router_id  backup
}

vrrp_script check_nginx{
	script "/etc/keepalived/check_nginx.sh"
	interval 2
	}
vrrp_instance VI_1 {
    state BACKUP
    interface ens160
    virtual_router_id 51
    priority 90
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.10.10.100
    }
    track_script {
    	check_nginx
    	}
}

7.7重启keepalived服务

bash 复制代码 
systemctl reatart keepalived

8.测试高可用

8.1关闭master上nginx服务

bash 复制代码 
systemctl stop nginx
bash 复制代码 
curl 10.10.10.100

tomact1 10.10.10.41

bash 复制代码 
curl 10.10.10.100

tomact210.10.10.42

bash 复制代码 
ps -ef  | grep nginx

root 3471 1 0 21:23 ? 00:00:00 nginx: master

process /usr/sbin/nginx nginx 3472 3471 0 21:23 ?

00:00:00 nginx: worker process nginx 3473 3471 0 21:23 ?

00:00:00 nginx: worker process nginx 3474 3471 0 21:23 ?

00:00:00 nginx: worker process

发现，当我们关闭 nginx 服务后，我们的脚本就会执行，从而自动帮我们把 nginx 服务启动起来。
8.2关闭keepalived和nginx

bash 复制代码 
systemctl stop keepalived
systemctl stop nginx
bash 复制代码 
curl 10.10.10.30

tomact1 10.10.10.41

bash 复制代码 
curl 10.10.10.32

tomact2 10.10.10.42

bash 复制代码 
ps -ef | grep nginx

root 3745 1489 0 21:25 pts/0 00:00:00 grep --color=auto

nginx

bash 复制代码 
systemctl start keepalived
ps -ef | grep nginx

root 3789 1 0 21:26 ? 00:00:00 nginx: master

process /usr/sbin/nginx nginx 3790 3789 0 21:26 ?

00:00:00 nginx: worker process nginx 3791 3789 0 21:26 ?

00:00:00 nginx: worker process nginx 3792 3789 0 21:26 ?

00:00:00 nginx: worker process

至此，keepalived + nginx + tomcat 的高可用就搭建完成。

相关推荐
NiKo_W17 小时前
Linux 开发工具(1)
linux·运维·服务器
艾莉丝努力练剑18 小时前
【C++】类和对象（下）：初始化列表、类型转换、Static、友元、内部类、匿名对象/有名对象、优化
linux·运维·c++·经验分享
-SGlow-18 小时前
Linux相关概念和易错知识点（45）（网络层、网段划分）
linux·运维·服务器·网络
潘潘潘潘潘潘潘潘潘潘潘潘19 小时前
【MySQL】从零开始学习MySQL：基础与安装指南
linux·运维·服务器·数据库·学习·mysql
ZzzZZzzzZZZzzzz…19 小时前
Nginx_Tomcat综合案例
运维·nginx·tomcat·负载均衡·rhce·反向代理·https加密服务
努力努力再努力wz19 小时前
【c++进阶系列】：map和set的模拟实现(附模拟实现的源码）
java·linux·运维·开发语言·c++
哦你看看21 小时前
linux故障排查
linux·运维·服务器
半桔21 小时前
【Linux手册】共享内存：零拷贝实现共享的优势与实操指南
linux·运维·服务器
山顶望月1 天前
ISO20000与IT运维和运营的关系
运维·it运营·iso20000
杰锅就是爱情1 天前
OpenObserve Ubuntu部署
linux·运维·ubuntu
热门推荐
01GitHub 镜像站点02UV 工具安装与国内镜像源配置指南03UV安装并设置国内源04A股预测还能更准？开源大模型Kronos带你跑通预测+回测全流程05KGG转MP3工具|非KGM文件|解密音频0646个Nano-banana 精选提示词，持续更新中07conda中设置镜像地址（附所有可换的地址）08突破百度网盘的下载限速，两种方法教会你【超详细】09Spec-Kit 使用指南10保姆级教程：手把手教你用Dify实现完美多轮对话（附Chatflow和提示词）