Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

原創 兔子拔蘿蔔 2018-11-23 02:53

目錄
第一部分 環境準備
第二部分 部署調度器—搭建Nginx+Keepalived（雙機熱備）
第三部分 部署服務器池—搭建Tomcat
第四部分 搭建Mysql數據庫
第五部分 案例應用

第一部分 環境準備

一：Nginx+keepalived服務器兩臺（調度器，雙機熱備）
系統：Linux—CentOS7.4
IP地址：192.168.40.15
192.168.40.16
軟件需求：nginx安裝包（nginx-1.13.9.tar.gz）
Keepalived安裝包（keepalived-1.4.2.tar.gz）

二：tomcat服務器兩臺（服務器池）
系統：Linux—CentOS7.4
IP地址：192.168.40.18（TM01）
192.168.40.19（TM02）
軟件需求：java環境jdk包（jdk-8u144-linux-x64.tar.gz）
tomcat安裝包（apache-tomcat-8.5.23.tar.gz）
SL會員商城項目軟件包（SLSaleSystem.tar.gz）

三：Mysql服務器一臺
系統：Linux-CentOS7.4
IP地址：192.168.40.30
軟件需求：mysql安裝包（mysql-boost-5.7.20.tar.gz）
SL會員商場數據庫文件（slsaledb-2014-4-10.sql）

四：客戶端一臺，以本機爲例，測試驗證用
IP地址：192.168.40.12
//Linux系統信息

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

第二部分 部署調度器—搭建Nginx+Keepalived（雙機熱備）

//以下在兩臺Nginx調度服務器上操作

第一步：配置主服務器（192.168.40.15）

-------安裝nginx服務-------
[root@lvs01 ~]# yum install -y \ //安裝編譯工具及插件

gcc \
gcc-c++ \
make \
openssl-devel \
zlib-devel \
pcre-devel
[root@localhost ~]# useradd -s /sbin/nologin -M nginx //添加帳號
[root@localhost ~]# tar vxf nginx-1.13.9.tar.gz //解壓nginx安裝包
[root@localhost ~]# cd nginx-1.13.9
[root@localhost ~ nginx-1.13.9]# ./configure \ //個性化配置
--user=nginx \
--group=nginx \
--with-file-aio \
--with-http_flv_module \
--with-http_stub_status_module \
--with-http_ssl_module \
--with-http_gzip_static_module \
--with-http_realip_module
[root@localhost nginx-1.13.9]# make //編譯
[root@localhost nginx-1.13.9]# make install //安裝
//以下編譯nginx主配置文件
[root@localhost nginx-1.13.9]# vi /usr/local/nginx/conf/nginx.conf
user nginx nginx;
worker_processes 1;

#error_log logs/error.log;
#error_log logs/error.log notice;
error_log logs/error.log info;

pid logs/nginx.pid;

events {
worker_connections 1024;
}

http {
include mime.types;
default_type application/octet-stream;

log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                  '$status $body_bytes_sent "$http_referer" '
                  '"$http_user_agent" "$http_x_forwarded_for"';

access_log  logs/access.log  main;
    add_header X-Server $hostname;
    server_names_hash_bucket_size 128;
    server_name_in_redirect off;

sendfile        on;
tcp_nopush     on;
tcp_nodelay on;

#keepalive_timeout  0;
keepalive_timeout  60;
    client_header_buffer_size 32k;
    large_client_header_buffers 4 128k;
    client_max_body_size 512m;
    open_file_cache max=65535 inactive=20s;
    open_file_cache_valid 30s;
    open_file_cache_min_uses 1;

gzip  on;
    gzip_static on;
    gzip_http_version 1.1;
    gzip_comp_level 2;
    gzip_min_length 1024;
    gzip_vary on;
    gzip_types text/plain text/javascript application/x-javascript text/css text/xml application/xml application/xml+rss;

server_tokens off;
fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 512k;
fastcgi_buffers 6 512k;
fastcgi_busy_buffers_size 512k;
fastcgi_temp_file_write_size 512k;
fastcgi_intercept_errors on;
client_body_buffer_size 128k;

    proxy_connect_timeout 600;
    proxy_read_timeout 600;
    proxy_send_timeout 600;
    proxy_buffer_size 32k;
    proxy_buffers 4 32k;
    proxy_busy_buffers_size 64k;
    proxy_temp_file_write_size 2m;
    proxy_ignore_client_abort on;
    proxy_cache_path /usr/local/nginx/cache_temp levels=2:2

keys_zone=cache_temp:128m inactive=30m max_size=2g;
proxy_cache_valid 200 302 10m;
include /usr/local/nginx/conf/conf.d/*.conf;

server {
    listen       80;
    server_name  localhost;

    charset UTF-8;

    #access_log  logs/host.access.log  main;

    location / {
        root   html;
        index  index.html index.htm;
    }

}
保存退出
//以下編輯子配置文件
[root@localhost nginx-1.13.9]# cd /usr/local/nginx/conf/
[root@localhost conf]# mkdir conf.d
[root@localhost conf]# cd conf.d/
[[email protected]]# vi lvs01.conf //新建子配置文件
server {
listen 80;
server_name localhost 192.168.40.15; #服務器名稱與IP地址
index index.html index.jsp;
root /usr/local/nginx/html;
access_log /usr/local/nginx/logs/tomcat.aa.com_access.log main;
location ~ ..jsp$ {
index index.jsp;
proxy_set_header HOST $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Client-IP $remote_addr;
proxy_set_header X-For $proxy_add_x_forwarded_for;
proxy_pass http://center_pool;
}
location ~ ..(gif|jpg|jpeg|png|bmp|swf)$ {
expires 30d;
proxy_pass http://center_pool;
}
location ~ .*.(js|css)?$ {
expires 1h;
proxy_pass http://center_pool;

    }

}
[root@localhost conf.d]# vi pool.conf //創建服務器池
upstream center_pool { #默認輪詢
server 192.168.40.18:8080;
server 192.168.40.19:8080;
}
//製作啓動腳本
[root@localhost conf.d]# vi /etc/init.d/nginx
#!/bin/bash
# chkconfig: 35 99 20
# description: Nginx Service Control Script**

PROG="/usr/local/nginx/sbin/nginx"
PIDF="/usr/local/nginx/logs/nginx.pid"
case "$1" in
start)
$PROG
;;
stop)
kill -s QUIT $(cat $PIDF)
;;
restart)
$0 stop
$0 start
;;
reload)
kill -s HUP $(cat $PIDF)
;;
*)
echo "Usage: $0 {start|stop|restart|reload}"
exit 1
esac
exit 0

ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/
[root@localhost conf.d]# chmod +x /etc/init.d/nginx //增加執行權限
[root@localhost conf.d]# chkconfig --add nginx //加入系統管理服務
[root@localhost conf.d]# service nginx start //啓動nginx服務
[root@localhost conf.d]# netstat -anpt | grep 80

-------------部署keepalived-----------
[root@localhost conf.d]#
yum -y install \
popt-devel \
kernel-devel \
openssl-devel
[root@localhost ~]# tar xvf keepalived-1.4.2.tar.gz
[root@localhost ~]# cd keepalived-1.4.2
[root@localhost keepalived-1.4.2]# ./configure --prefix=/ //配置
[root@localhost keepalived-1.4.2]# make && make install //編譯與安裝
[root@localhost keepalived-1.4.2]# cp keepalived/etc/init.d/keepalived /etc/init.d/
[root@localhost keepalived-1.4.2]# systemctl enable keepalived //設置開機自啓
//以下編輯keepalived配置文件
[root@localhost keepalived-1.4.2]# cd /etc/keepalived/
[root@localhost keepalived]# vi keepalived.conf
! 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 ens33
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
nginx
}
virtual_ipaddress {
192.168.40.100
}
}
//注意，主備的優先級配置的相差50

//判斷keepalived進程是否存在，在就啓動nginx不在就關閉
[root@localhost keepalived]# vi /opt/nginx.sh
#!/bin/bash
#Filename:nginx.sh
A=$(ps -ef | grep keepalived | grep -v grep | wc -l)
if [ $A -gt 0 ]; then
/etc/init.d/nginx start
else
/etc/init.d/nginx stop
Fi
[root@localhost keepalived]# chmod +x /opt/nginx.sh
[root@localhost keepalived]# systemctl start keepalived
[root@localhost ~]# ip addr show dev ens33 //查看漂移地址是否生成

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

[root@localhost ~]#systemctl status nginx
[root@localhost ~]#systemctl status keeplived

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

---------------測試驗證------------
[root@localhost ]# systemctl stop keepalived //關閉keepalived服務
[root@localhost ]# systemctl status keepalived //查看其狀態
[root@localhost ]# ip addr show dev ens33 //查看漂移地址是否還在

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

[root@lvs01 keepalived]# systemctl start keepalived //開啓keepalived服務
[root@lvs01 keepalived]# netstat -anpt | grep 80 //nginx隨keepalived啓動

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//驗證成功

第二步：配置從服務器（192.168.40.16）

-------安裝nginx服務-------
[root@lvs01 ~]# yum install -y \ //安裝編譯工具及插件

gcc \
gcc-c++ \
make \
openssl-devel \
zlib-devel \
pcre-devel
[root@localhost ~]# useradd -s /sbin/nologin -M nginx //添加帳號
[root@localhost ~]# tar vxf nginx-1.13.9.tar.gz //解壓nginx安裝包
[root@localhost ~]# cd nginx-1.13.9
[root@localhost ~ nginx-1.13.9]# ./configure \ //個性化配置
--user=nginx \
--group=nginx \
--with-file-aio \
--with-http_flv_module \
--with-http_stub_status_module \
--with-http_ssl_module \
--with-http_gzip_static_module \
--with-http_realip_module
[root@localhost nginx-1.13.9]# make //編譯
[root@localhost nginx-1.13.9]# make install //安裝
//以下編譯nginx主配置文件
[root@localhost nginx-1.13.9]# vi /usr/local/nginx/conf/nginx.conf
user nginx nginx;
worker_processes 1;

#error_log logs/error.log;
#error_log logs/error.log notice;
error_log logs/error.log info;

pid logs/nginx.pid;

events {
worker_connections 1024;
}

http {
include mime.types;
default_type application/octet-stream;

log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                  '$status $body_bytes_sent "$http_referer" '
                  '"$http_user_agent" "$http_x_forwarded_for"';

access_log  logs/access.log  main;
    add_header X-Server $hostname;
    server_names_hash_bucket_size 128;
    server_name_in_redirect off;

sendfile        on;
tcp_nopush     on;
tcp_nodelay on;

#keepalive_timeout  0;
keepalive_timeout  60;
    client_header_buffer_size 32k;
    large_client_header_buffers 4 128k;
    client_max_body_size 512m;
    open_file_cache max=65535 inactive=20s;
    open_file_cache_valid 30s;
    open_file_cache_min_uses 1;

gzip  on;
    gzip_static on;
    gzip_http_version 1.1;
    gzip_comp_level 2;
    gzip_min_length 1024;
    gzip_vary on;
    gzip_types text/plain text/javascript application/x-javascript text/css text/xml application/xml application/xml+rss;

server_tokens off;
fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 512k;
fastcgi_buffers 6 512k;
fastcgi_busy_buffers_size 512k;
fastcgi_temp_file_write_size 512k;
fastcgi_intercept_errors on;
client_body_buffer_size 128k;

    proxy_connect_timeout 600;
    proxy_read_timeout 600;
    proxy_send_timeout 600;
    proxy_buffer_size 32k;
    proxy_buffers 4 32k;
    proxy_busy_buffers_size 64k;
    proxy_temp_file_write_size 2m;
    proxy_ignore_client_abort on;
    proxy_cache_path /usr/local/nginx/cache_temp levels=2:2

keys_zone=cache_temp:128m inactive=30m max_size=2g;
proxy_cache_valid 200 302 10m;
include /usr/local/nginx/conf/conf.d/*.conf;

server {
    listen       80;
    server_name  localhost;

    charset UTF-8;

    #access_log  logs/host.access.log  main;

    location / {
        root   html;
        index  index.html index.htm;
    }

}
保存退出
//以下編輯子配置文件
[root@localhost nginx-1.13.9]# cd /usr/local/nginx/conf/
[root@localhost conf]# mkdir conf.d
[root@localhost conf]# cd conf.d/
[[email protected]]# vi lvs01.conf //新建子配置文件
server {
listen 80;
server_name localhost 192.168.40.16; #服務器名稱與IP地址
index index.html index.jsp;
root /usr/local/nginx/html;
access_log /usr/local/nginx/logs/tomcat.aa.com_access.log main;
location ~ ..jsp$ {
index index.jsp;
proxy_set_header HOST $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Client-IP $remote_addr;
proxy_set_header X-For $proxy_add_x_forwarded_for;
proxy_pass http://center_pool;
}
location ~ ..(gif|jpg|jpeg|png|bmp|swf)$ {
expires 30d;
proxy_pass http://center_pool;
}
location ~ .*.(js|css)?$ {
expires 1h;
proxy_pass http://center_pool;

    }

}
[root@localhost conf.d]# vi pool.conf //創建服務器池
upstream center_pool { #默認輪詢
server 192.168.40.18:8080;
server 192.168.40.19:8080;
}
//製作啓動腳本
[root@localhost conf.d]# vi /etc/init.d/nginx
#!/bin/bash
# chkconfig: 35 99 20
# description: Nginx Service Control Script***
PROG="/usr/local/nginx/sbin/nginx"
PIDF="/usr/local/nginx/logs/nginx.pid"
case "$1" in
start)
$PROG
;;
stop)
kill -s QUIT $(cat $PIDF)
;;
restart)
$0 stop
$0 start
;;
reload)
kill -s HUP $(cat $PIDF)
;;
)
echo "Usage: $0 {start|stop|restart|reload}"
exit 1
esac
exit 0

ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/
[root@localhost conf.d]# chmod +x /etc/init.d/nginx //增加執行權限
[root@localhost conf.d]# chkconfig --add nginx //加入系統管理服務
[root@localhost conf.d]# service nginx start //啓動nginx服務
[root@localhost conf.d]# netstat -anpt | grep 80

-------------部署keepalived-----------
[root@localhost conf.d]#
yum -y install \
popt-devel \
kernel-devel \
openssl-devel
[root@localhost ~]# tar xvf keepalived-1.4.2.tar.gz
[root@localhost ~]# cd keepalived-1.4.2
[root@localhost keepalived-1.4.2]# ./configure --prefix=/ //配置
[root@localhost keepalived-1.4.2]# make && make install //編譯與安裝
[root@localhost keepalived-1.4.2]# cp keepalived/etc/init.d/keepalived /etc/init.d/
[root@localhost keepalived-1.4.2]# systemctl enable keepalived //設置開機自啓
//以下編輯keepalived配置文件（注意和主服務器不同之處）
[root@localhost keepalived-1.4.2]# cd /etc/keepalived/
[root@localhost keepalived]# vi keepalived.conf
! Configuration File for keepalived
global_defs {
route_id NGINX-02
}
vrrp_script nginx {
script "/opt/nginx.sh"
interval 2
weight -10
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
nginx
}
virtual_ipaddress {
192.168.40.100
}
}
//注意，主備的優先級配置的相差50
//判斷keepalived進程是否存在，在就啓動nginx不在就關閉
[root@localhost keepalived]# vi /opt/nginx.sh
#!/bin/bash
#Filename:nginx.sh
A=$(ip addr | grep 192.168.40.100/32 | grep -v grep | wc -l)
if [ $A -gt 0 ]; then
/etc/init.d/nginx start
else
/etc/init.d/nginx stop
fi
[root@localhost keepalived]# chmod +x /opt/nginx.sh
[root@localhost ~]# systemctl start keepalived

----------測試驗證----------
一：查看從服務器狀態
[root@localhost ~]# ip addr show dev ens33 //查看漂移地址

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//由於主服務器在運行，漂移地址並未同步過來

二：模擬主服務故障

  1. 主服務器
    [root@localhost ~]#systemctl stop keepalived
    [root@localhost ~]#systemctl status keepalived
    [root@localhost ~]# ip addr show dev ens33

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//漂流地址已經不在此服務器上

2.從服務器
[root@localhost ~]#systemctl status nginx
[root@localhost ~]#systemctl status keepalived

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

[root@localhost ~]#ip addr show dev ens33

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//服務器檢測到虛擬地址，nginx服務自動啓動開始工作

三：模擬主服務器恢復工作

  1. 主服務器

[root@localhost ~]#systemctl start keepalived
[root@localhost ~]#ip addr show dev ens33

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

[root@localhost ~]# netstat -anpt | grep 80

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//主服務器已恢復工作

  1. 從服務器
    [root@localhost ~]# ip addr show dev ens33

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//漂移地址自動移除
//nginx自動停止服務
//雙機熱備驗證成功

第三部分 部署服務器池—搭建Tomcat

//以下在兩臺tomcat服務器上操作
第一步：部署第一個節點服務器TM01（192.168.40.18）
----------部署java環境，jdk---------
[root@localhost ~]# tar xvf jdk-8u144-linux-x64.tar.gz //解壓jdk
[root@localhost ~]# cp -r jdk1.8.0_144/ /usr/local/java //創建java源目錄
[root@localhost ~]# vi /etc/profile
最後添加以下內容：
export JAVA_HOME=/usr/local/java
export JRE_HOME=/usr/local/java/jre
export PATH=$PATH:/usr/local/java/bin
export CLASSPATH=./:/usr/local/java/lib:/usr/local/java/jre/lib
保存退出
[root@localhost ~]# source /etc/profile //立即生效
[root@localhost ~]# java –version //查看版本

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//java環境部署完成

----------部署tomcat----------
[root@localhost ~]# tar xvf apache-tomcat-8.5.23.tar.gz //解壓apache-tomcat
[root@localhost ~]# cp -r apache-tomcat-8.5.23 /usr/local/tomcat8 //創建tomcat源目錄
//做個軟鏈接，使tomcat開啓與關閉更加方便
[root@localhost ~]# ln -s /usr/local/tomcat8/bin/startup.sh /usr/bin/tomcatup
[root@localhost ~]# ln -s /usr/local/tomcat8/bin/shutdown.sh /usr/bin/tomcatdown
[root@localhost ~]# tomcatup //開啓tomcat
[root@localhost ~ ]# tomcatdown //關閉 Tomcat
[root@localhost ~]# tomcatup //再次開啓tomcat
//目的是防止Tomcat沒有開啓
報錯是在Tomcatdown上報error
[root@localhost ~]# netstat -anput | grep 80

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

-----------驗證------------

  1. 真機下訪問默認主頁：http://192.168.40.18:8080

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//tomcat部署成功

  1. 服務器池中有兩臺tomcat服務器，爲了便於識別，主頁上添加點標記
    [root@localhost ~]# vi /usr/local/tomcat8/webapps/ROOT/index.jsp
    添加一行內容：

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

保存退出
[root@localhost ~ ]# tomcatdown //關閉 Tomcat
[root@localhost ~]# tomcatup //開啓tomcat
//再次訪問默認主頁http://192.168.40.18:8080

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

第二步：部署第二個節點服務器TM02（192.168.40.19）

----------部署java環境，jdk---------
[root@localhost ~]# tar xvf jdk-8u144-linux-x64.tar.gz //解壓jdk
[root@localhost~]# cp -r jdk1.8.0_144/ /usr/local/java //創建java源目錄
[root@localhost ~]# vi /etc/profile
最後添加以下內容：
export JAVA_HOME=/usr/local/java
export JRE_HOME=/usr/local/java/jre
export PATH=$PATH:/usr/local/java/bin
export CLASSPATH=./:/usr/local/java/lib:/usr/local/java/jre/lib
保存退出
[root@localhost ~]# source /etc/profile //立即生效
[root@localhost ~]# java –version //查看版本

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//java環境部署完成

----------部署tomcat----------
[root@localhost ~]# tar xvf apache-tomcat-8.5.23.tar.gz //解壓apache-tomcat
[root@localhost ~]# cp -r apache-tomcat-8.5.23 /usr/local/tomcat8 //創建tomcat源目錄
//做個軟鏈接，使tomcat開啓與關閉更加方便
[root@localhost ~]# ln -s /usr/local/tomcat8/bin/startup.sh /usr/bin/tomcatup
[root@localhost ~]# ln -s /usr/local/tomcat8/bin/shutdown.sh /usr/bin/tomcatdown
[root@localhost ~]# tomcatup //開啓tomcat
[root@localhost ~ ]# tomcatdown //關閉 Tomcat
[root@localhost ~]# tomcatup //再次開啓tomcat
//目的是防止Tomcat沒有開啓
報錯是在Tomcatdown上報error
[root@localhost ~]# netstat -anput | grep 80

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

-----------驗證------------

  1. 真機下訪問默認主頁：http://192.168.40.19:8080

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

[root@localhost ~]# vi /usr/local/tomcat8/webapps/ROOT/index.jsp
添加一行內容：

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

保存退出
[root@localhost ~ ]# tomcatdown //關閉 Tomcat
[root@localhost ~]# tomcatup //開啓tomcat
//再次訪問默認主頁http://192.168.40.19:8080

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//tomcat部署成功

第三步：驗證nginx調度器漂移地址輪詢
真機訪問http://192.168.40.100/index.jsp

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

再次訪問

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//輪詢驗證成功且不影響單獨的nginx訪問

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

第四部分 搭建Mysql數據庫

//以下在mysql數據庫上操作（192.168.40.30）
一：安裝編譯工具與插件
[root@localhost ~]# yum -y install \

gcc \
gcc-c++ \
make \
ncurses \
ncurses-devel \
bison \
cmake

二：建立數據庫程序用戶
[root@localhost ~]# useradd -s /sbin/nologin mysql

三：解壓mysql安裝包
[root@localhost ~]# tar xf mysql-boost-5.7.20.tar.gz –C /opt/

四：配置（個性化配置及優化項目）
[root@localhost ~]# cd /opt/mysql-5.7.20/
[root@localhost mysql-5.7.20]# cmake \

-DCMAKE_INSTALL_PREFIX=/usr/local/mysql \ //定義安裝目錄
-DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \ //連接數據庫socket路徑
-DSYSCONFDIR=/etc \ //指定初始化參數文件目錄（my.cnf）
-DSYSTEMD_PID_DIR=/usr/local/mysql \ //數據庫目錄
-DDEFAULT_CHARSET=utf8 \ //指定默認使用的字符集編碼
-DDEFAULT_COLLATION=utf8_general_ci \ //指定默認使用的字符集校對規則，utf8_general_ci是適用於UTF-8字符集的通用規則
-DWITH_INNOBASE_STORAGE_ENGINE=1 \ //支持InnoDB引擎
-DWITH_ARCHIVE_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \ //安裝支持數據庫分區
-DMYSQL_DATADIR=/usr/local/mysql/data \
-DWITH_BOOST=boost \
-DWITH_SYSTEMD=1

五：編譯與安裝
[root@localhost mysql-5.7.20]# make
[root@localhost mysql-5.7.20]# make install

//對數據庫目錄進行權限配置
[root@localhost mysql-5.7.20]# chown -R mysql.mysql /usr/local/mysql/

六：編輯Mysql主配置文件
[root@localhost mysql-5.7.20]# vi /etc/my.cnf
（裏面內容全部刪除，替換成以下內容）
[client]
port = 3306
default-character-set=utf8
socket = /usr/local/mysql/mysql.sock

[mysql]
port = 3306
default-character-set=utf8
socket = /usr/local/mysql/mysql.sock

[mysqld]
user = mysql
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
port = 3306
character_set_server=utf8
pid-file = /usr/local/mysql/mysqld.pid
socket = /usr/local/mysql/mysql.sock
server-id = 1

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,PIPES_AS_CONCAT,ANSI_QUOTES
//保存退出

[root@localhost mysql-5.7.20]# chown mysql:mysql /etc/my.cnf //配置文件屬主與屬組

七：設置環境變量
[root@localhost mysql-5.7.20]# echo 'PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH' >> /etc/profile
//把這兩個路徑添加到環境變量中，並放到profile文件中使之開機自運行，否則不生效
root@localhost mysql-5.7.20]# echo 'export PATH' >> /etc/profile
//設爲全局變量，使它使用環境更廣
[root@localhost mysql-5.7.20]# source /etc/profile //立即生效

八：初始化數據庫
[root@localhost ~]# cd /usr/local/mysql/
[root@localhost mysql]# bin/mysqld \

--initialize-insecure \
--user=mysql \
--basedir=/usr/local/mysql \
--datadir=/usr/local/mysql/data

九：開啓Mysql服務
[root@localhost mysql]# cp usr/lib/systemd/system/mysqld.service /usr/lib/systemd/system/
[root@localhost mysql]# systemctl daemon-reload
[root@localhost mysql]# systemctl start mysqld
[root@localhost mysql]# netstat -anpt | grep 3306 //查看服務運行狀態

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

[root@localhost mysql]# systemctl enable mysqld //設爲開機啓動

十：訪問數據庫操作
[root@localhost mysql]# mysqladmin -u root -p password "abc123"
//給root賬號設置密碼爲abc123
注意：提示輸入的是原始密碼（原始沒有密碼，直接回車）
[root@localhost mysql]# mysql -u root -p //登錄數據庫
注意：有密碼的加“-p”,如果沒有密碼不用加“-p”

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

//數據庫安裝配置成功，退出則輸入”quit“

第五部分 案例應用

第一步：Tomcat服務器下操作（兩臺tomcat都要操作）
[root@localhost ~]# cd /usr/local/tomcat8/conf/
[root@localhost conf]# vi server.xml
在/Host name下面新增一行：
<Context path="" docBase="SLSaleSystem" reloadable="true" debug="0"></Context>

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

保存退出

第二步：在mysql服務器上操作
[root@localhost ~]# mysql -u root -p //登錄數據庫，輸入密碼abc123
create database slsaledb; //創建數據庫slsaledb
GRANT all ON slsaledb.* TO 'testuser'@'%' IDENTIFIED BY 'admin123'; //授權testuser用戶(密碼爲admin123)擁有slsaledb數據庫的所有權限
flush privileges; //刷新權限

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

quit 退出
[root@localhost ~]# mysql -u root -p < slsaledb-2014-4-10.sql //上傳slsaledb數據庫
//用root進數據庫查看

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

第三步：在tomcat服務器上操作

  1. TOM01（192.168.40.18）：
    [root@localhost ~]# tar xf SLSaleSystem.tar.gz -C /usr/local/tomcat8/webapps/
    [root@localhost ~]# cd /usr/local/tomcat8/webapps/SLSaleSystem/WEB-INF/classes
    [root@localhost1 classes]# vi jdbc.properties

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

保存退出

  1. TOM02（192.168.40.19）：
    [root@localhost ~]# tar xf SLSaleSystem.tar.gz -C /usr/local/tomcat8/webapps/
    [root@localhost ~]# cd /usr/local/tomcat8/webapps/SLSaleSystem/WEB-INF/classes
    [root@localhost classes]# vi jdbc.properties

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

保存退出

第四步：驗證
一： 驗證tomcat連接
真機下訪問：http://192.168.40.18:8080（TOM01）

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

輸入管理員帳號admin，密碼123456

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

訪問：http://192.168.40.19:8080（TOM02）

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

輸入管理員帳號admin，密碼123456

Nginx+Keepalived+Tomcat+MySQL負載均衡& 通過nginx調度器訪問Tom

二：驗證nginx調度器
訪問：http://192.168.80.100/index.jsp

三：驗證keepalived雙機熱備

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