下文給大家?guī)?lái)掌握Nginx +keepalived+varnish+lamp實(shí)現(xiàn)高可用、負(fù)載均衡集群的方法,希望能夠給大家在實(shí)際運(yùn)用中帶來(lái)一定的幫助,負(fù)載均衡涉及的東西比較多,理論也不多,網(wǎng)上有很多書(shū)籍,今天我們就用億速云在行業(yè)內(nèi)累計(jì)的經(jīng)驗(yàn)來(lái)做一個(gè)解答。
描述:
1、前端兩臺(tái)NGINX,通過(guò)keepalived虛擬IP漂移,實(shí)現(xiàn)前端兩臺(tái)NGINX高可用;
2、利用NGINX反向代理功能對(duì)后端varnish實(shí)現(xiàn)高可用集群,
3、再通過(guò)varnish實(shí)現(xiàn)動(dòng)靜分離
注:1、先裝Nginx +keepalived
2、裝varnish
3、裝lamp
需要6臺(tái)虛擬機(jī)(100-101裝Nginx +keepalived:100主,101備)需要聯(lián)網(wǎng)(102-103裝varnish)需要聯(lián)網(wǎng)(104-105裝lamp)需要聯(lián)網(wǎng)
所有主機(jī)必做的步驟
systemctl stop firewalld //關(guān)閉防火墻
setenforce 0 //關(guān)閉監(jiān)控
1、裝Nginx +keepalived(兩臺(tái)機(jī)子都要做的)(100主101備)
systemctl stop firewalld //關(guān)閉防火墻
setenforce 0 //關(guān)閉監(jiān)控
cd /etc/yum.repos.d/
mv back/* ./
yum install -y epel-release
yum install -y nginx
yum install keepalived -y
vi /etc/keepalived/keepalived.conf(把里面內(nèi)容全刪了添加以下內(nèi)容)
! Configuration File for keepalived
global_defs {
route_id NGINX-01
}
vrrp_script nginx {
script "/opt/nginx.sh"
interval 2
weight -10
}
vrrp_instance VI_1 {
state MASTER
interface ens32
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
nginx
}
virtual_ipaddress {
192.168.80.188
}
}
scp /etc/keepalived/keepalived.conf root@192.168.80.101:/etc/keepalived/keepalived.conf
vi /etc/keepalived/keepalived.conf(修改以下畫圈部分)
vi /opt/nginx.sh(添加以下內(nèi)容)
#!/bin/bash
A=$(ps -ef | grep keepalived | grep -v grep | wc -l)
if [ $A -gt 0 ];then
systemctl start nginx
else
systemctl sop nginx
fi
chmod +x /opt/nginx.sh
ll /opt/nginx.sh
netstat -anpt | grep nginx
systemctl start keepalived
netstat -anpt | grep nginx
ip addr show ens32
vi /opt/nginx.sh(添加以下內(nèi)容)
#!/bin/bash
A=$(ip addr | grep 192.168.80.188/32 | grep -v grep | wc -l)
if [ $A -gt 0 ];then
systemctl start nginx
else
systemctl stop nginx
fi
chmod +x /opt/nginx.sh
systemctl start keepalived
cat /var/log/messages
cat /var/log/messages
vi /etc/nginx/nginx.conf(修改以下內(nèi)容)
upstream varnish_pool {
server 192.168.80.102:80;
server 192.168.80.103:80;
}
proxy_pass http://varnish_pool;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $remote_addr;
nginx -t
scp /etc/nginx/nginx.conf 192.168.80.101:/etc/nginx/nginx.conf
systemctl restart nginx
2、裝varnish(80.102,80.103)(兩臺(tái)機(jī)子都需要做)
systemctl stop firewalld //關(guān)閉防火墻
setenforce 0 //關(guān)閉監(jiān)控
cd /etc/yum.repos.d/
mv back/* ./
yum install epel-release -y //需要聯(lián)網(wǎng)
yum install -y varnish
vi /etc/varnish/varnish.params(修改環(huán)圈部分)
vi /etc/varnish/default.vcl(修改添加以下部分)
backend web1 {
.host = "192.168.80.104";
.port = "80";
}
backend web2 {
.host = "192.168.80.105";
.port = "80";
}
sub vcl_recv {
if (req.url ~ "(?i)\.php$"){
set req.backend_hint = web1;
}else{
set req.backend_hint = web2;
}
systemctl start varnish
netstat -anpt | grep varnish
vi /etc/varnish/varnish.params(修改以下內(nèi)容)
scp /etc/varnish/default.vcl 192.168.80.103:/etc/varnish/default.vcl
systemctl start varnish
netstat -anpt | grep varnish
3、裝lamp(兩臺(tái)機(jī)子都要做的)(100主101備)
systemctl stop firewalld //關(guān)閉防火墻
setenforce 0 //關(guān)閉監(jiān)控
cd /etc/yum.repos.d/
mv back/* ./
安裝wget
yum install -y wget
yum install -y httpd
systemctl start httpd
systemctl enable httpd
獲取rpm軟件包:
wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
安裝rpm包
rpm -ivh mysql-community-release-el7-5.noarch.rpm
安裝mysql
yum install -y mysql-community-server
啟動(dòng)
systemctl start mysql
systemctl enable mysql
修改root密碼并設(shè)置允許遠(yuǎn)程連接
進(jìn)入mysql
mysql -uroot
設(shè)置root密碼為123456
set password for 'root'@'localhost' =password('123456');
設(shè)置允許用root賬戶進(jìn)行遠(yuǎn)程連接,并設(shè)置其密碼為123456
grant all privileges on *.* to root@'%'identified by '123456';
修改的配置立即生效
flush privileges;
退出:
exit
部署php
yum install -y php
安裝組件是php支持mysql
yum install -y \
php-mysql \
php-gd \
libjpeg* \
php-ldap \
php-odbc \
php-pear \
php-xml \
php-xmlrpc \
php-mbstring \
php-bcmath \
php-mhash
vi /etc/httpd/conf/httpd.conf(修改以下內(nèi)容)
ServerName www.example.com:80去掉#號(hào)
systemctl start httpd
echo "<h3>192.168.80.101</h3>" > /var/www/html/index.php
vi /etc/httpd/conf/httpd.conf(修改以下內(nèi)容)
ServerName www.example.com:80去掉#號(hào)
systemctl start httpd
echo "<h3>192.168.80.102</h3>" > /var/www/html/index.html
看了以上關(guān)于掌握Nginx +keepalived+varnish+lamp實(shí)現(xiàn)高可用、負(fù)載均衡集群的方法,如果大家還有什么地方需要了解的可以在億速云行業(yè)資訊里查找自己感興趣的或者找我們的專業(yè)技術(shù)工程師解答的,億速云技術(shù)工程師在行業(yè)內(nèi)擁有十幾年的經(jīng)驗(yàn)了。
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