nginx+tomcat负载均衡+动静分离+redis集中管理session-白红宇

nginx+tomcat负载均衡+动静分离+redis集中管理session

阅读量：6265 次

发布时间：2019-06-22

本文共 7446 字，大约阅读时间需要 24 分钟。

1、服务器A安装ng，服务器B、C安装tomcat；

2、服务器A建立/data/www目录，用于发布静态文件；

3、ng无动静分离配置；

user root root;worker_processes 8;pid /usr/local/nginx/nginx.pid;worker_rlimit_nofile 102400;events{use epoll;worker_connections 102400;}http{  include       mime.types;  default_type  application/octet-stream;  fastcgi_intercept_errors on;  charset  utf-8;  server_names_hash_bucket_size 128;  client_header_buffer_size 4k;  large_client_header_buffers 4 32k;  client_max_body_size 300m;  sendfile on;  tcp_nopush     on;     keepalive_timeout 60;     tcp_nodelay on;  client_body_buffer_size  512k;   proxy_connect_timeout    5;  proxy_read_timeout       60;  proxy_send_timeout       5;  proxy_buffer_size        16k;  proxy_buffers            4 64k;  proxy_busy_buffers_size 128k;  proxy_temp_file_write_size 128k;     gzip on;  gzip_min_length  1k;  gzip_buffers     4 16k;  gzip_http_version 1.1;  gzip_comp_level 2;  gzip_types       text/plain application/x-javascript text/css application/xml;  gzip_vary on;   ###2012-12-19 change nginx logslog_format  main  '$http_x_forwarded_for - $remote_user [$time_local] "$request" '              '$status $body_bytes_sent "$http_referer" '              '"$http_user_agent"  $request_time $remote_addr';               upstream web_app { server 192.168.203.130:10086 weight=1 max_fails=2 fail_timeout=30s; server 192.168.203.131:10087 weight=1 max_fails=2 fail_timeout=30s;} ####chinaapp.sinaapp.comserver {    listen 80;    server_name  chinaapp.sinaapp.com;    index index.jsp index.html index.htm;    # 发布目录:/data/www    root  /data/www;         location /    {        proxy_next_upstream http_502 http_504 error timeout invalid_header;        proxy_set_header Host  $host;        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;        proxy_pass http://web_app;        expires      3d;    }    } }

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4、ng动静分离配置；

user root root;worker_processes 8;pid /usr/local/nginx/nginx.pid;worker_rlimit_nofile 102400;events{use epoll;worker_connections 102400;}http{  include       mime.types;  default_type  application/octet-stream;  fastcgi_intercept_errors on;  charset  utf-8;  server_names_hash_bucket_size 128;  client_header_buffer_size 4k;  large_client_header_buffers 4 32k;  client_max_body_size 300m;  sendfile on;  tcp_nopush     on;     keepalive_timeout 60;     tcp_nodelay on;  client_body_buffer_size  512k;   proxy_connect_timeout    5;  proxy_read_timeout       60;  proxy_send_timeout       5;  proxy_buffer_size        16k;  proxy_buffers            4 64k;  proxy_busy_buffers_size 128k;  proxy_temp_file_write_size 128k;     gzip on;  gzip_min_length  1k;  gzip_buffers     4 16k;  gzip_http_version 1.1;  gzip_comp_level 2;  gzip_types       text/plain application/x-javascript text/css application/xml;  gzip_vary on;   ###2012-12-19 change nginx logslog_format  main  '$http_x_forwarded_for - $remote_user [$time_local] "$request" '              '$status $body_bytes_sent "$http_referer" '              '"$http_user_agent"  $request_time $remote_addr';               upstream web_app { server 192.168.203.130:10086 weight=1 max_fails=2 fail_timeout=30s; server 192.168.203.131:10087 weight=1 max_fails=2 fail_timeout=30s;} ####chinaapp.sinaapp.comserver {    listen 80;    server_name  chinaapp.sinaapp.com;    index index.jsp index.html index.htm;    # 发布目录:/data/www    root  /data/www;         location /    {        proxy_next_upstream http_502 http_504 error timeout invalid_header;        proxy_set_header Host  $host;        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;        proxy_pass http://web_app;        expires      3d;    }    location ~ .*\.(html|htm|gif|jpg|jpeg|bmp|png|ico|txt|js|css)$    {        root /data/www;         #expires定义用户浏览器缓存的时间为3天，如果静态页面不常更新，可以设置更长，这样可以节省带宽和缓解服务器的压力        expires      3d;         }    } }

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5、安装ng的时候不用指定编译参数，直接./configure --prefix=/usr/local/nginx & make & make install就行；

6、这里直接访问域名依然会请求tomcat，没搞清楚为什么，只有域名后面带有具体静态文件才会从ng请求；

7、下载https://github.com/jcoleman/tomcat-redis-session-manager，修改相关参数，编译，将下面的9个文件放到tomcat的lib目录下；

gradle.build修改成为：

apply plugin: 'java'apply plugin: 'maven'apply plugin: 'signing'group = 'com.orangefunction'version = '2.0.0'repositories {  mavenCentral()}compileJava {  sourceCompatibility = 1.7  targetCompatibility = 1.7}dependencies {  compile group: 'org.apache.tomcat', name: 'tomcat-catalina', version: '7.0.67'  compile group: 'redis.clients', name: 'jedis', version: '2.5.2'  compile group: 'org.apache.commons', name: 'commons-pool2', version: '2.2'  //compile group: 'commons-codec', name: 'commons-codec', version: '1.9'  testCompile group: 'junit', name: 'junit', version: '4.+'  testCompile 'org.hamcrest:hamcrest-core:1.3'  testCompile 'org.hamcrest:hamcrest-library:1.3'  testCompile 'org.mockito:mockito-all:1.9.5'  testCompile group: 'org.apache.tomcat', name: 'tomcat-coyote', version: '7.0.67'}task javadocJar(type: Jar, dependsOn: javadoc) {  classifier = 'javadoc'  from 'build/docs/javadoc'}task sourcesJar(type: Jar) {  from sourceSets.main.allSource  classifier = 'sources'}artifacts {  archives jar  archives javadocJar  archives sourcesJar}//signing {//  sign configurations.archives//}task copyJars(type: Copy) {  from configurations.runtime  into 'dist'  }uploadArchives {  repositories {    mavenDeployer {      beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }      //repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {      //  authentication(userName: sonatypeUsername, password: sonatypePassword)      //}      //repository(url: "https://oss.sonatype.org/content/repositories/snapshots") {      //  authentication(userName: sonatypeUsername, password: sonatypePassword)      //}      pom.project {        name 'tomcat-redis-session-manager'        packaging 'jar'        description 'Tomcat Redis Session Manager is a Tomcat extension to store sessions in Redis'        url 'https://github.com/jcoleman/tomcat-redis-session-manager'        issueManagement {          url 'https://github.com:jcoleman/tomcat-redis-session-manager/issues'          system 'GitHub Issues'        }        scm {          url 'https://github.com:jcoleman/tomcat-redis-session-manager'          connection 'scm:git:git://github.com/jcoleman/tomcat-redis-session-manager.git'          developerConnection 'scm:git:git@github.com:jcoleman/tomcat-redis-session-manager.git'        }        licenses {          license {            name 'MIT'            url 'http://opensource.org/licenses/MIT'            distribution 'repo'          }        }        developers {          developer {            id 'jcoleman'            name 'James Coleman'            email 'jtc331@gmail.com'            url 'https://github.com/jcoleman'          }        }      }    }  }}

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8、编译完之后，上面的倒数第三那个是在build目录下面；

9、修改tomcat配置文件：

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10、上面的host是redis的地址，如果tomcat和redis没有在同一台机器上，那么tomcat的启动是比较慢的，需要耐心等候，不是报错；

11、一般来说，session中我们记录用户的信息，如果记录单个属性，那么没什么说得，如果session的属性是用户对象，那么该对象需要实现Serializable接口；

12、异常记录：由于我的数据库装载笔记本实体机上面，而ng，tomcat1，tomcat2分别装在vm的3个不同的机器里面的，所以导致vm里面的机器连接实体机的数据库时报错，无法连接，我们需要为数据库增加访问权限：

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION; FLUSH   PRIVILEGES;

13、另外：tomcat启动真的很慢，需要1分钟，搞不懂为什么，我这里把文件做了动静分离的，把静态文件放在ng的/data/www目录下面，而ajax请求会被做负载均衡。

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