Centos 7 Nginx+Keepalived+Tomcat 源码安装与运用
2019-01-11 11:17
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Nginx+Keepalived+Tomcat 源码
第一部分 环境准备
一：Nginx+keepalived服务器两台（调度器，双机热备）
系统：Linux—CentOS7.4
IP地址：192.168.80.100（lvs01）
192.168.80.101（lvs02）
软件需求：nginx安装包（nginx-1.13.9.tar.gz）
Keepalived安装包（keepalived-1.4.2.tar.gz）
二：tomcat服务器两台（服务器池）
系统：Linux—CentOS7.4
IP地址：192.168.80.102（TM01）
192.168.80.103（TM02）
软件需求：java环境jdk包（jdk-8u144-linux-x64.tar.gz）
tomcat安装包（apache-tomcat-8.5.23.tar.gz）
192.168.80.100
1、源码安装Nginx
yum install -y \ //安装编译工具及插件 gcc \ gcc-c++ \ make \ openssl-devel \ zlib-devel \
useradd -s /sbin/nologin -M nginx --创建一个不能登录服务器，并且没有家目录的用户
tar vxf nginx-?.tar.gz ---解压nginx软件包
cd nginx-1.13.9 --切换到解压目录里
./configure \ //个性化配置 --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
make && make install --编译且安装
vi /usr/local/nginx/conf/nginx.conf --nginx主配置文件
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 $hostname;
server_names_hash_bucket_size 128;
server_name_in_redirect off;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
#keepalive_timeout 0;
keepalive_timeout 60;
client_header_buffer_size 32k;
large_client_header_buffers 4 128k;
client_max_body_size 512m;
open_file_cache max=65535 inactive=20s;
open_file_cache_valid 30s;
open_file_cache_min_uses 1;
gzip on;
gzip_static on;
gzip_http_version 1.1;
gzip_comp_level 2;
gzip_min_length 1024;
gzip_vary on;
gzip_types text/plain text/javascript application/x-javascript text/css text/xml application/xml application/xml+rss;
server_tokens off;
fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 512k;
fastcgi_buffers 6 512k;
fastcgi_busy_buffers_size 512k;
fastcgi_temp_file_write_size 512k;
fastcgi_intercept_errors on;
client_body_buffer_size 128k;
proxy_connect_timeout 600;
proxy_read_timeout 600;
proxy_send_timeout 600;
proxy_buffer_size 32k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 2m;
proxy_ignore_client_abort on;
proxy_cache_path /usr/local/nginx/cache_temp levels=2:2
keys_zone=cache_temp:128m inactive=30m max_size=2g;
proxy_cache_valid 200 302 10m;
include /usr/local/nginx/conf/conf.d/*.conf;
server {
listen 80;
server_name localhost;
charset UTF-8;
#access_log logs/host.access.log main;
location / {
root html;
index index.html index.htm;
}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}
# another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
# listen 8000;
# listen somename:8080;
# server_name somename alias another.alias;
# location / {
# root html;
# index index.html index.htm;
# }
#}
# HTTPS server
#
#server {
# listen 443 ssl;
# server_name localhost;
# ssl_certificate cert.pem;
# ssl_certificate_key cert.key;
# ssl_session_cache shared:SSL:1m;
# ssl_session_timeout 5m;
# ssl_ciphers HIGH:!aNULL:!MD5;
# ssl_prefer_server_ciphers on;
# location / {
# root html;
# index index.html index.htm;
# }
#}
}
cd /usr/local/nginx/conf/ --切换到nginx配置文件目录中
mkdir conf.d --创建一个 conf.d的目录
cd conf.d/
vi lvs01.conf //新建子配置文件
server {
listen 80;
server_name lvs01 192.168.80.100; //服务器名称与IP地址
index index.html index.jsp;
root /usr/local/nginx/html;
access_log /usr/local/nginx/logs/tomcat.aa.com_access.log main;
location ~ .*\.jsp$ {
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;
}
}
vi pool.conf //创建服务器池
upstream center_pool { //默认轮询
server 192.168.80.102:8080;
server 192.168.80.103:8080;
}
//制作启动脚本
[root@lvs01 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: $0 {start|stop|restart|reload}"
exit 1
esac
exit 0
chmod +x /etc/init.d/nginx //增加执行权限 chkconfig --add nginx //加入系统管理服务 service nginx start //启动nginx服务 netstat -anpt | grep 80
2、源码编译keepalived
yum -y install \ //安装插件 > popt-devel \ > kernel-devel \ > openssl-devel
tar xvf keepalived-1.4.2.tar.gz --解压keepalived压缩包 cd keepalived-1.4.2 --切换到解压目录 ./configure --prefix=/ --配置 make && make install --编译与安装
cp keepalived/etc/init.d/keepalived /etc/init.d/
//以下编辑keepalived配置文件
cd /etc/keepalived/
vi keepalived.conf
! Configuration File for keepalived
global_defs {
route_id NGINX-01
}
vrrp_script nginx {
script "/opt/nginx.sh"
interval 2
weight -10
}
vrrp_instance VI_1 {
state MASTER
interface ens32
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
nginx
}
virtual_ipaddress {
192.168.80.100
}
}
//注意，主备的优先级配置的相差50
创建脚本文件
判断keepalived进程是否存在，在就启动nginx不在就关闭
vi /opt/nginx.sh
#!/bin/bash #Filename:nginx.sh A=$(ps -ef | grep keepalived | grep -v grep | wc -l) if [ $A -gt 0 ]; then /etc/init.d/nginx start else /etc/init.d/nginx stop fi
chmod +x /opt/nginx.sh --给脚本文件加执行权限
service keepalived start --启动keepalived，会连nginx一块启动
ip addr show dev ens32 --查看漂移地址是否生成
---------------测试验证------------ [root@lvs01 keepalived]# systemctl stop keepalived //关闭keepalived服务 [root@lvs01 keepalived]# killall -9 nginx //关闭nignx服务 [root@lvs01 keepalived]# netstat -anpt | grep 80 //80端口已停止运行 [root@lvs01 keepalived]# systemctl start keepalived //开启keepalived服务 [root@lvs01 keepalived]# netstat -anpt | grep 80 //nginx随keepalived启动
192.168.80.101
---------------------配置从服务器--------------------------------
1、源码编译安装nginx
从服务器源码安装nginx，和主服务器一样，根据主服务器操作在做一遍
需要修改的地方
2、源码安装keepalived
操作和主服务器相同,在写到nginx.sh脚本文件时不同，其它的操作一模一样。
#!/bin/bash #Filename:nginx.sh A=$(ip addr | grep 192.168.80.188/32 | grep -v grep | wc -l) if [ $A -gt 0 ]; then /etc/init.d/nginx start else /etc/init.d/nginx stop fi
chmod +x /opt/nginx.sh --给脚本执行权限
service keepalived start --启动 keepalived
----------测试验证----------
一：查看从服务器状态
[root@lvs02 ~]#ip addr show dev ens33//查看漂移地址
//由于主服务器在运行，漂移地址并未同步过来//当主服务器在运行的时候，从服务器虚拟地址并未生成，nginx服务并未随keepalived启动
二：模拟主服务故障
- 主服务器
killall 命令需要安装 : yum install psmisc -y
//80端口已不运行
[root@lvs01 ~]# ip addr show dev ens32
//漂移地址消失，不工作
-
从服务器
[root@lvs02 ~]# ip addr show dev ens32 //查看漂移地址
//漂移地址自动生成
[root@lvs02 ~]# netstat -anpt | grep 80
- 主服务器
[root@lvs01 ~]# service keepalived start [root@lvs01 ~]# ip addr show dev ens33
[root@lvs01 ~]# netstat -anpt | grep 80
//主服务器已恢复工作
- 从服务器
[root@lvs02 ~]# ip addr show dev ens33
//漂移地址自动移除
[root@lvs02 ~]# netstat -anpt | grep 80
//nginx自动停止服务 //双机热备验证成功 192.168.80.103 提示:操作与192.168.80.102基本一样 需要修改的地方就是把 SERVER AA 改成 SERVER BB j 就可以了 --------测试------ 地址栏里输入:192.168.80.188:8080,点击刷新按钮查看是否动态轮询。 # 192.168.80.102 第三部分 部署服务器池—搭建Tomcat //以下在两台tomcat服务器上操作 第一步：部署第一个节点服务器TM01（192.168.80.102） ----------部署java环境，jdk--------- [root@tom01 ~]# tar xvf jdk-8u144-linux-x64.tar.gz //解压jdk [root@tom01 ~]# cp -r jdk1.8.0_144/ /usr/local/java //创建java源目录 [root@tom01 ~]# vi /etc/profile 最后添加以下内容： export JAVA_HOME=/usr/local/java export JRE_HOME=/usr/local/java/jre export PATH=$PATH:/usr/local/java/bin export CLASSPATH=./:/usr/local/java/lib:/usr/local/java/jre/lib 保存退出 [root@tom01 ~]# source /etc/profile //立即生效 [root@tom01 ~]# java –version //查看版本 java环境部署完成 ----------部署tomcat---------- [root@tom01 ~]# tar xvf apache-tomcat-8.5.23.tar.gz //解压apache-tomcat [root@tom01 ~]# cp -r apache-tomcat-8.5.23 /usr/local/tomcat8 //创建tomcat源目录 //做个软链接，使tomcat开启与关闭更加方便 [root@tom01 ~]# ln -s /usr/local/tomcat8/bin/startup.sh /usr/bin/tomcatup [root@tom01 ~]# ln -s /usr/local/tomcat8/bin/shutdown.sh /usr/bin/tomcatdown [root@tom01 ~]# tomcatup //开启tomcat [root@tom01 ~]# netstat -anpt | grep 8080 Win7下访问默认主页：http://192.168.80.102:8080  //tomcat部署成功 2. 服务器池中有两台tomcat服务器，为了便于识别，主页上添加点标记 [root@tom01 ~]# vi /usr/local/tomcat8/webapps/ROOT/index.jsp 添加一行内容：  保存退出 [root@tom01 ~]# tomcatdown [root@tom01 ~]# tomcatup //重启 //再次访问默认主页http://192.168.80.102:8080  192.168.80.103 提示:操作与192.168.80.102基本一样 需要修改的地方就是把 SERVER AA 改成 SERVER BB j 就可以了 --------测试------ 地址栏里输入:192.168.80.188:8080,点击刷新按钮查看是否动态轮询。
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