Shulou(Shulou.com)06/03 Report--

Server Load Balancing is a network service device that distributes traffic to multiple CVMs (computing clusters). It can quickly improve the external service capability of the application system through traffic distribution; hide the actual service port to enhance the security of the internal system; by eliminating the service single point of failure, improve the reliability of the application system. Today, I will introduce to you the practical methods and steps of Nginx+Tomcat load balancing cluster.

Nginx+Tomcat load balancing cluster

Nginx handles static

Tomcat processing dynamics

Merge into dynamic and static separation (front and rear separation)

Tomcat important catalogue

Bin: stores startup and shutdown Tomcat scripts

Conf: stores different configuration files of Tomcat

Doc: storing Tomcat documents

Lib/japser/common: store the library files needed for Tomcat to run

Logs: stores the LOG file when Tomcat executes

Src: store the source code of Tomcat

Webapps:Tomcat 's main Web release directory

Demo pre-knowledge points: advantages of Nginx static processing

The efficiency of 1.Nginx in dealing with static pages is much higher than that of Tomcat.

two。 If the number of requests for Tomcat is 1000, the number of requests for Nginx is 6000

The throughput of 3.Tomcat is 0.6m per second. The throughput of Nginx is 3.6m.

The ability of 4.Nginx to handle static resources is 6 times higher than that of Tomcat, which shows the advantage.

Principle of dynamic and static separation: when the server receives requests from the client, there are both static resources and dynamic resource environment preparation:

Nginx:192.168.18.147---- > CentOS 7-2

Tomcat 1Rose 192.168.18.128 Murmuri-> CentOS 7-3

Tomcat 2Rose 129.168.18.148 Murray Murray-> CentOS 7-4

Client:192.168.18.129---- > Win 7-1

Operation of Tomcat 1 server CentOS 7-3: [root@localhost ~] # hostnamectl set-hostname tomcat1 [root@localhost ~] # su [root@tomcat1 ~] # systemctl stop firewalld.service [root@tomcat1 ~] # setenforce 0 [root@tomcat1 ~] # mkdir / aaa [root@tomcat1 ~] # mount.cifs / / 192.168.10.189/rpm / aaaPassword for root@//192.168.10.189/rpm: [root@tomcat1 ~] # cd / aaa/tomcat/ [root@tomcat1 Tomcat] # lsapache-tomcat-7.0.54.tar.gz jdk-8u91-linux-x64.tar.gzapache-tomcat-8.5.16.tar.gz nginx-1.12.0.tar.gzjdk-7u65-linux-x64.gz nginx-1.6.0.tar.gz [root@tomcat1 tomcat] # tar zxvf jdk-8u91-linux-x64.tar.gz-C / usr/local/# set the environment variable: [root@tomcat1 tomcat] # vim / etc/profile # press uppercase G to the last line Press the lowercase letter o to insert the following in the following line: export JAVA_HOME=/usr/local/jdk1.8.0_91export JRE_HOME=$ {JAVA_HOME} / jreexport CLASSPATH=.:$ {JAVA_HOME} / lib:$ {JRE_HOME} / libexport PATH=$ {JAVA_HOME} / bin:$PATH#, press Esc to exit insert mode Input: wq save exit [root@tomcat1 tomcat] # source / etc/profile [root@tomcat1 tomcat] # lsapache-tomcat-7.0.54.tar.gz jdk-8u91-linux-x64.tar.gzapache-tomcat-8.5.16.tar.gz nginx-1.12.0.tar.gzjdk-7u65-linux-x64.gz nginx-1.6.0.tar.gz [root@tomcat1 tomcat] # tar zxvf apache-tomcat-8.5.16.tar.gz-C / usr/local/ [root@tomcat1 tomcat] # cd / usr/local/ [root@tomcat1 local] # lsapache-tomcat-8.5.16 etc include lib libexec sharebin games jdk1.8.0_91 lib64 sbin src [root@tomcat1 local] # mv apache-tomcat-8.5.16/ tomcat [root@tomcat1 local] # lsbin games jdk1.8.0_91 lib64 sbin srcetc include lib libexec share tomcat [root@tomcat1 local ] # ln-s / usr/local/tomcat/bin/startup.sh / usr/local/bin/ [root@tomcat1 local] # ln-s / usr/local/tomcat/bin/shutdown..sh / usr/local/bin/ [root@tomcat1 local] # mkdir-pv / web/webapp1mkdir: created directory "/ web" mkdir: created directory "/ web/webapp1" [root@tomcat1 local] # cd / web/webapp1/ [root@tomcat1 webapp1] # vim index.jsp After JSP test1 page # is added, enter: wq save exit [root@tomcat1 webapp1] # vim / usr/local/tomcat/conf/server.xml # input / Host find the following # insert under this line Add site directory # enter: wq save exit [root@tomcat1 webapp1] # startup.sh Using CATALINA_BASE: / usr/local/tomcatUsing CATALINA_HOME: / usr/local/tomcatUsing CATALINA_TMPDIR: / usr/local/tomcat/tempUsing JRE_HOME: / usr/local/jdk1.8.0_91/jreUsing CLASSPATH: / usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jaTomcat started. Enter 192.168.18.128pur8080 in the browser of the host computer to see: Welcome KGC Web

Operation of Tomcat 2 server CentOS 7-4: [root@localhost ~] # hostnamectl set-hostname tomcat2 [root@localhost ~] # su [root@tomcat1 ~] # systemctl stop firewalld.service [root@tomcat1 ~] # setenforce 0 [root@tomcat1 ~] # mkdir / aaa [root@tomcat1 ~] # mount.cifs / / 192.168.10.189/rpm / aaaPassword for root@//192.168.10.189/rpm: [root@tomcat1 ~] # cd / aaa/tomcat/ [root@tomcat1 Tomcat] # lsapache-tomcat-7.0.54.tar.gz jdk-8u91-linux-x64.tar.gzapache-tomcat-8.5.16.tar.gz nginx-1.12.0.tar.gzjdk-7u65-linux-x64.gz nginx-1.6.0.tar.gz [root@tomcat1 tomcat] # tar zxvf jdk-8u91-linux-x64.tar.gz-C / usr/local/# set the environment variable: [root@tomcat1 tomcat] # vim / etc/profile # press uppercase G to the last line Press the lowercase letter o to insert the following in the following line: export JAVA_HOME=/usr/local/jdk1.8.0_91export JRE_HOME=$ {JAVA_HOME} / jreexport CLASSPATH=.:$ {JAVA_HOME} / lib:$ {JRE_HOME} / libexport PATH=$ {JAVA_HOME} / bin:$PATH#, press Esc to exit insert mode Input: wq save exit [root@tomcat1 tomcat] # source / etc/profile [root@tomcat1 tomcat] # lsapache-tomcat-7.0.54.tar.gz jdk-8u91-linux-x64.tar.gzapache-tomcat-8.5.16.tar.gz nginx-1.12.0.tar.gzjdk-7u65-linux-x64.gz nginx-1.6.0.tar.gz [root@tomcat1 tomcat] # tar zxvf apache-tomcat-8.5.16.tar.gz-C / usr/local/ [root@tomcat1 tomcat] # cd / usr/local/ [root@tomcat1 local] # lsapache-tomcat-8.5.16 etc include lib libexec sharebin games jdk1.8.0_91 lib64 sbin src [root@tomcat1 local] # mv apache-tomcat-8.5.16/ tomcat [root@tomcat1 local] # lsbin games jdk1.8.0_91 lib64 sbin srcetc include lib libexec share tomcat [root@tomcat1 local ] # ln-s / usr/local/tomcat/bin/startup.sh / usr/local/bin/ [root@tomcat1 local] # ln-s / usr/local/tomcat/bin/shutdown..sh / usr/local/bin/ [root@tomcat1 local] # mkdir-pv / web/webapp1mkdir: created directory "/ web" mkdir: created directory "/ web/webapp1" [root@tomcat1 local] # cd / web/webapp1/ [root@tomcat1 webapp1] # vim index.jsp After JSP test1 page # is added, enter: wq save exit [root@tomcat1 webapp1] # vim / usr/local/tomcat/conf/server.xml # input / Host find the following # insert under this line Add site directory # enter: wq save exit [root@tomcat1 webapp1] # startup.sh Using CATALINA_BASE: / usr/local/tomcatUsing CATALINA_HOME: / usr/local/tomcatUsing CATALINA_TMPDIR: / usr/local/tomcat/tempUsing JRE_HOME: / usr/local/jdk1.8.0_91/jreUsing CLASSPATH: / usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jaTomcat started. Enter 192.168.18.148pur8080 in the browser of the host to see: Welcome ACCP Web

Operation of Nginx server CentOS 7-2: [root@localhost ~] # hostnamectl set-hostname nginx [root@localhost ~] # su [root@nginx ~] # yum install pcre-devel zlib-devel gcc gcc-c++ make-y [root@nginx ~] # mkdir / aaa [root@nginx ~] # mount.cifs / / 192.168.10.189/rpm / aaaPassword for root@//192.168.10.189/rpm: [root@nginx ~] # cd / aaa/tomcat/ [root@ Nginx tomcat] # lsapache-tomcat-7.0.54.tar.gz jdk-8u91-linux-x64.tar.gzapache-tomcat-8.5.16.tar.gz nginx-1.12.0.tar.gzjdk-7u65-linux-x64.gz nginx-1.6.0.tar.gz [root@nginx tomcat] # tar zxvf nginx-1.12.0.tar.gz-C / usr/local/ [root@nginx tomcat] # cd / usr/local/nginx-1.12.0 / [root@nginx nginx-1.12.0] # lsauto CHANGES.ru configure html man srcCHANGES conf contrib LICENSE README [root@nginx nginx-1.12.0] # useradd-M-s / sbin/nologin nginx [root@nginx nginx-1.12.0]. / configure\-- prefix=/usr/local/nginx\-- user=nginx\-- group=nginx\-- with-http_stub_status_module\-- with-http_gzip_static_module\- -with-http_flv_ module [root @ nginx nginx-1.12.0] # make & & make install [root@nginx nginx-1.12.0] # vim / usr/local/nginx/conf/nginx.conf#gzip on # insert the following content in the following line: upstream tomcat_server {server 192.168.18.128 server 8080 weight=1; server 192.168.18.148 server 8080 weight=1;} location / {root html; index index.html index.htm; # insert proxy_pass http://tomcat_server; in the following line } # Press Esc to exit insert mode after modification Enter: wq save exit [root@nginx nginx-1.12.0] # ln-s / usr/local/nginx/sbin/nginx / usr/local/sbin/ [root@nginx nginx-1.12.0] # nginx- tnginx: the configuration file / usr/local/nginx/conf/nginx.conf syntax is oknginx: configuration file / usr/local/nginx/conf/nginx.conf test is successful [root@nginx nginx-1.12.0] # nginx [root@nginx nginx-1.12.0] # netstat-ntap | grep 80tcp 0 0 0.0 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. Enter 192.168.18.147 in the host browser and you can see: Welcome KGC Web

# 2. Refresh again can be reached: Welcome ACCP Web

Result: at this point, Nginx accesses the Tomcat server pool as a reverse proxy!

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