centos7下systemd实现tomcat多实例

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环境: CentOS 7 x86_64

1、安装jdk

1	rpm -ivh jdk-8u60-linux-x64.rpm

2、创建普通用户

1 2	getent group tomcat || groupadd -r tomcat getent passwd tomcat || useradd -r -d /opt -s /bin/nologin tomcat

3、下载tomcat 7

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cd /opt wget http: //mirrors .ustc.edu.cn/<a href= "http://so.21ops.com/cse/search?s=9181936462520079739&entry=1&q=apache" class="bdcs-inlinelink" target= "_blank" >apache< /a > /tomcat/tomcat-7/v7 .0.64 /bin/apache-tomcat-7 .0.64. tar .gz tar zxvf apache-tomcat-7.0.64. tar .gz mv apache-tomcat-7.0.64 tomcat01 chown -R tomcat:tomcat tomcat01 tar zxvf apache-tomcat-7.0.64. tar .gz mv apache-tomcat-7.0.64 tomcat02 chown -R tomcat:tomcat tomcat02

两个实例同时监听8080端口必然会产生冲突，所以必须修改.

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sed -i 's/8080/8081/g' /opt/tomcat01/conf/server .xml sed -i 's/8005/8001/g' /opt/tomcat01/conf/server .xml sed -i 's/8080/8082/g' /opt/tomcat02/conf/server .xml sed -i 's/8005/8002/g' /opt/tomcat02/conf/server .xml

AJP通常用不上，这里统一关闭

1 2	sed -i '/8009/d' /opt/tomcat01/conf/server .xml sed -i '/8009/d' /opt/tomcat01/conf/server .xml

tomcat在Linux 下默认工作模式是bio,性能非常低,建议使用apr或者nio，

这里改为nio,即非阻塞IO,性能比较好。

1 2	sed -i.bak 's#HTTP/1.1#org.apache.coyote.http11.Http11NioProtocol#' /opt/tomcat01/conf/server .xml sed -i.bak 's#HTTP/1.1#org.apache.coyote.http11.Http11NioProtocol#' /opt/tomcat02/conf/server .xml

3、创建启动文件

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cd /usr/lib/systemd/system cat >tomcat01.service <<EOF [Unit] Description=Apache Tomcat 7 After=network.target [Service] Type=oneshot ExecStart= /opt/tomcat01/bin/startup .sh ExecStop= /opt/tomcat01/bin/shutdown .sh RemainAfterExit= yes User=tomcat Group=tomcat [<a href= "http://so.21ops.com/cse/search?s=9181936462520079739&entry=1&q=Install" class= "bdcs-inlinelink" target="_blank" >Install< /a >] WantedBy=multi-user.target EOF

tomcat02同理

1	sed 's/tomcat01/tomcat02/g' tomcat01.service > tomcat02.service

4、启动服务

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systemctl enable tomcat01 systemctl enable tomcat02 systemctl start tomcat01 systemctl start tomcat02

5、查看进程

ps aux |grep tomcat

附上一份nginx反向代理tomcat的配置文件

proxy_cache_path /var/cache/nginx/proxy_cache levels=1:2 keys_zone=static:10m inactive=1h max_size=1g;

upstream tomcat {

ip_hash ;

#hash $remote_addr consistent;

server 127.0.0.1:8081 max_fails=1 fail_timeout=2s ;

server 127.0.0.1:8082 max_fails=1 fail_timeout=2s ; ;

keepalive 16;

}

server {

listen 80;

server_name tomcat.example.com;

charset utf-8;

access_log /var/log/nginx/tomcat.access.log main;

root /usr/share/nginx/html;

index index.html index.htm index.jsp;

location / {

proxy_pass http://tomcat;

proxy_redirect off;

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_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;

proxy_connect_timeout 300;

proxy_send_timeout 300;

proxy_read_timeout 300;

proxy_http_version 1.1;

proxy_set_header Connection "";

add_header X-Backend "$upstream_addr";

}

location ~* ^.+.(js|css|ico|gif|jpg|jpeg|png)$ {

proxy_pass http://tomcat ;

proxy_redirect off;

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_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;

proxy_connect_timeout 300;

proxy_send_timeout 300;

proxy_read_timeout 300;

proxy_http_version 1.1;

proxy_set_header Connection "";

proxy_cache static;

proxy_cache_key $host$uri$is_args$args;

proxy_cache_valid 200 302 5m;

proxy_cache_valid 404 1m;

proxy_cache_valid any 1h;

add_header X-Cache $upstream_cache_status;

#log_not_found off;

#access_log off;

expires max;

}

location ~ /.ht {

deny all;

}

}

如果想深入体验LINUX系统的新手，也可以先下载一个方德Linux软件中心试用一下。