zabbix 监控 Tomcat

#

# zabbix提供了一个JMX通过java gateway 来监控java

#官方文档：https://www.zabbix.com/documentation/3.2/manual/appendix/config/zabbix_java

#java gatewa 需要独立安装 以为zabbix-server  zabbix-agent都不能直接监控java

#Tomcat 安装参考：Tomcat安装与配置

#zabbix 安装参考：zabbix安装和基本介绍

主机名	角色	IP地址
node2	zabbix-server    zabbix-java-gateway	192.168.174.136
node4	tomcat	192.168.174.138

#安装java gateway

[root@node2 ~]# yum install -y zabbix-java-gateway java-1.8.0

#配置

[root@node2 ~]# vim /etc/zabbix/zabbix_java_gateway.conf
[root@node2 ~]# grep '^[a-Z]' /etc/zabbix/zabbix_java_gateway.conf 
LISTEN_IP="0.0.0.0"
LISTEN_PORT=10052
PID_FILE="/var/run/zabbix/zabbix_java.pid"
START_POLLERS=5
TIMEOUT=3
[root@node2 ~]#

我们使用默认配置即可

#开启服务

[root@node2 ~]# systemctl start zabbix-java-gateway.service
[root@node2 ~]# netstat -lntup | grep 10052
tcp6       0      0 :::10052                :::*                    LISTEN      3002/java           
[root@node2 ~]#

#修改zabbix-server配置文件

[root@node2 ~]# vim /etc/zabbix/zabbix_server.conf
[root@node2 ~]# egrep '(^Java|^Start)' /etc/zabbix/zabbix_server.conf 
JavaGateway=192.168.174.136
JavaGatewayPort=10052
StartJavaPollers=5

#重启zabbix-server服务

[root@node2 ~]# systemctl restart zabbix-server.service

#Tomcat开启JMX

#参考文档:http://tomcat.apache.org/tomcat-8.0-doc/monitoring.html

[root@node4 tomcat]# vim /usr/local/tomcat/bin/catalina.sh 
[root@node4 tomcat]# sed -n '114,118p' /usr/local/tomcat/bin/catalina.sh
CATALINA_OPTS="-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.port=8888  
-Djava.rmi.server.hostname=192.168.174.138"

[root@node4 tomcat]# /usr/local/tomcat/bin/startup.sh 

[root@node4 tomcat]# netstat -lntup
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1186/sshd           
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1512/master         
tcp6       0      0 :::22                   :::*                    LISTEN      1186/sshd           
tcp6       0      0 ::1:25                  :::*                    LISTEN      1512/master         
udp        0      0 0.0.0.0:20618           0.0.0.0:*                           991/dhclient        
udp        0      0 0.0.0.0:68              0.0.0.0:*                           991/dhclient        
udp6       0      0 :::36737                :::*                                991/dhclient

#发现服务没有启动

查看日志在最后一行发现错误，local host name unknow
[root@node4 tomcat]# tail -10 logs/catalina.out 
18-May-2017 23:19:33.887 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 32022 ms
18-May-2017 23:24:00.914 INFO [main] org.apache.catalina.core.StandardServer.await A valid shutdown command was received via the shutdown port. Stopping the Server instance.
18-May-2017 23:24:00.915 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["http-nio-8080"]
18-May-2017 23:24:00.970 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["ajp-nio-8009"]
18-May-2017 23:24:01.022 INFO [main] org.apache.catalina.core.StandardService.stopInternal Stopping service [Catalina]
18-May-2017 23:24:01.080 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["http-nio-8080"]
18-May-2017 23:24:01.081 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["ajp-nio-8009"]
18-May-2017 23:24:01.082 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["http-nio-8080"]
18-May-2017 23:24:01.083 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["ajp-nio-8009"]
Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: node4: node4: Name or service not known

#修改hosts文件
[root@node4 tomcat]# hostname
node4
[root@node4 tomcat]# vim /etc/hosts
[root@node4 tomcat]# tail -1 /etc/hosts
192.168.174.138 node4

[root@node4 tomcat]# /usr/local/tomcat/bin/startup.sh 
Using CATALINA_BASE:   /usr/local/tomcat
Using CATALINA_HOME:   /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:        /usr/local/jdk
Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Tomcat started.


[root@node4 tomcat]# netstat -lntup
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1186/sshd           
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1512/master         
tcp6       0      0 :::8009                 :::*                    LISTEN      4020/java           
tcp6       0      0 :::8080                 :::*                    LISTEN      4020/java           
tcp6       0      0 :::22                   :::*                    LISTEN      1186/sshd           
tcp6       0      0 :::53463                :::*                    LISTEN      4020/java           
tcp6       0      0 :::8888                 :::*                    LISTEN      4020/java           
tcp6       0      0 ::1:25                  :::*                    LISTEN      1512/master         
tcp6       0      0 :::45731                :::*                    LISTEN      4020/java           
tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN      4020/java           
udp        0      0 0.0.0.0:20618           0.0.0.0:*                           991/dhclient        
udp        0      0 0.0.0.0:68              0.0.0.0:*                           991/dhclient        
udp6       0      0 :::36737                :::*                                991/dhclient        

服务正常启动

#添加主机

#选择模板

#JMX启用

#查看图形