1.前言:
我们的监控系统是zabbix,最近刚做完jvm还有Tomcat的监控,需要吐槽以下内容:
本文监控jvm内容如下:
内存使用状态:堆内存(Heap memory)和非堆内存(No Heap memory),包括已用值、最大值、已提交; 堆内存内存池:新生代(eden space),survivor space,老年代(old gen)的内存使用状态; 非堆内存内存池:代码缓存(Code cache),元空间(meta space),压缩类空间(compressed class space); 类加载:加载总数,已加载,已卸载。 Java线程:总开启线程,活动线程,线程峰值。
本文监控tomcat内容如下:
Tomcat请求数:包括每秒请求数,每秒出错数; Tomcat网络流量统计:包括进流量统计,出流量统计; Tomcat线程:包括最大线程数,当前线程数,当前繁忙线程数。
我没有在zabbix中添加垃圾回收(gc)的监控,而是在catalina配置里面添加gc日输入来给开发进行分析,设置方式如下。
CATALINA_OPTS=”-XX:ParallelGCThreads=4 -XX:+PrintGCDetails -Xloggc:日志存放路径”
监控效果如下:
2.监控环境搭建
环境介绍:
[root@tomcat-01 ~]# /usr/local/tomcat/bin/version.sh Server version: Apache Tomcat/8.0.23 Server built: May 19 2015 14:58:38 UTC Server number: 8.0.23.0 OS Name: linux OS Version: 2.6.32-573.22.1.el6.x86_64 Architecture: amd64 JVM Version: 1.8.0_65-b17 JVM Vendor: Oracle Corporation
2.1.Server端配置
1、 Zabbix server端安装java jdk环境并开启javaGateway支持java监控。
javaGateway 启用方式如下:
Zabbix通过rpm包安装:只需要安装zabbix-java-gateway包即可。
Zabbix通过编译安装:在编译时需要加上—enable-java以支持jmx监控,如果之前没加需要重新编译。
2、修改zabbix-java-gateway配置文件
[root@zabbix ~]# vim /etc/zabbix/zabbix_java_gateway.conf LISTEN_IP="192.168.10.3" LISTEN_PORT=10052 PID_FILE="/var/run/zabbix/zabbix_java.pid" START_POLLERS=5 修改zabbix-server配置文件 [root@zabbix ~]# vim /etc/zabbix/zabbix_server.conf JavaGateway=192.168.10.3 JavaGatewayPort=10052 StartJavaPollers=5 启动zabbix-java-gateway服务 [root@zabbix ~]# /etc/init.d/zabbix-java-gateway start
2.2.Tomcat服务器配置
1、下载catalina-jmx-remote.jar包,到tomcat安装目录下的lib目录
wget -O /usr/local/tomcat/lib/catalina-jmx-remote.jar http://archive.apache.org/dist/tomcat/tomcat-8/v8.0.23/bin/extras/catalina-jmx-remote.jar
2、修改catalina.sh添加如下内容
CATALINA_OPTS="$CATALINA_OPTS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=8090 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false"
3、重启tomcat与监控测试
(1)下载cmdline-jmxclient-0.10.3.jar文件,下载地址http://crawler.archive.org/cmdline-jmxclient/downloads.html
(2)本地执行如下命令查看tomcat的堆内存信息
[root@tomcat-01 ~]# java -jar /root/cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 java.lang:type=Memory HeapMemoryUsage 11/04/2016 15:23:16 +0800 org.archive.jmx.Client HeapMemoryUsage: committed: 2146959360 init: 2147483648 max: 2146959360 used: 407611808
3.监控数据采集
3.1.堆内存
Tomcat本地查看堆内存信息:
[root@tomcat-01 ~]# java -jar cmdline-jmxclient-0.10.3.jar controlRole:tomcat 127.0.0.1:8090 java.lang:type=Memory HeapMemoryUsage 11/04/2016 15:36:58 +0800 org.archive.jmx.Client HeapMemoryUsage: committed: 2145910784 init: 2147483648 max: 2145910784 used: 741540536
zabbix监控堆内存键值:
堆内存最大值:jmx["java.lang:type=Memory","HeapMemoryUsage.max"] 已用堆内存:jmx["java.lang:type=Memory","HeapMemoryUsage.used"] 已提交堆内存:jmx["java.lang:type=Memory","HeapMemoryUsage.committed"]
一个完整的zabbix item填写方式如下,不同内容填写不同的键值即可:
3.2.内存池eden space:
Tomcat本地查看eden space:
java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 java.lang:type=MemoryPool,name=PS Eden Space Usage
zabbix监控eden区域键值:
最大空间:jmx["java.lang:type=MemoryPool,name=PS Eden Space",Usage.max] 已用空间:jmx["java.lang:type=MemoryPool,name=PS Eden Space",Usage.used] 提交空间:jmx["java.lang:type=MemoryPool,name=PS Eden Space",Usage.committed]
3.3.内存池survivor space:
Tomcat本地查看Survivor space区域:
java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 java.lang:type=MemoryPool,name=PS Survivor Space Usage
zabbix监控Survivor 键值:
jmx["java.lang:type=MemoryPool,name=PS Survivor Space",Usage.committed] jmx["java.lang:type=MemoryPool,name=PS Survivor Space",Usage.max] jmx["java.lang:type=MemoryPool,name=PS Survivor Space",Usage.used]
3.4.内存池old gen:
Tomcat本地查看old gen区域使用:
java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 java.lang:name=PS Old Gen,type=MemoryPool Usage
zabbix监控old gen键值:
jmx["java.lang:type=MemoryPool,name=PS Old Gen",Usage.committed] jmx["java.lang:type=MemoryPool,name=PS Old Gen",Usage.max] jmx["java.lang:type=MemoryPool,name=PS Old Gen",Usage.used]
3.5.非堆内存:
Tomcat 本地查看非堆内存使用:
java -jar cmdline-jmxclient-0.10.3.jar controlRole:tomcat 127.0.0.1:8090 java.lang:type=Memory NonHeapMemoryUsag1 zabbix监控非堆内存使用 1jmx["java.lang:type=Memory","NonHeapMemoryUsag.committed"] jmx["java.lang:type=Memory","NonHeapMemoryUsag.used"]
3.6.内存池meta space:
Tomcat 本地查看meta space区域使用:
java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 java.lang:type=MemoryPool,name=Metaspace Usage
zabbix监控mete space区域键值
jmx["java.lang:type=MemoryPool,name=Metaspace",Usage.committed] jmx["java.lang:type=MemoryPool,name=Metaspace",Usage.used]
3.7.内存池code cache:
Tomcat 本地查看code cache区域使用:
java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 java.lang:type=MemoryPool,name=Code Cache Usage
zabbix监控code cache区域使用:
jmx["java.lang:type=MemoryPool,name=Code Cache",Usage.committed] jmx["java.lang:type=MemoryPool,name=Code Cache",Usage.max] jmx["java.lang:type=MemoryPool,name=Code Cache",Usage.used]
3.8.内存池compressed class space:
Tomcat 本地查看compressed class space区域使用:
java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 java.lang:type=MemoryPool,name=Compressed Class Space Usage
zabbix监控 compressed class space区域使用键值:
jmx["java.lang:type=MemoryPool,name=Compressed Class Space",Usage.committed] jmx["java.lang:type=MemoryPool,name=Compressed Class Space",Usage.max] jmx["java.lang:type=MemoryPool,name=Compressed Class Space",Usage.used]
3.9.类加载:
Tomcat本地查看类加载信息:
加载总数: java -jar cmdline-jmxclient-0.10.3.jar controlRole:tomcat 127.0.0.1:8090 java.lang:type=ClassLoading TotalLoadedClassCoun 已加载: java -jar cmdline-jmxclient-0.10.3.jar controlRole:tomcat 127.0.0.1:8090 java.lang:type=ClassLoading LoadedClassCount 已卸载: java -jar cmdline-jmxclient-0.10.3.jar controlRole:tomcat 127.0.0.1:8090 java.lang:type=ClassLoading UnloadedClassCount
Zabbix监控类加载键值:
加载总数: jmx["java.lang:type=ClassLoading","TotalLoadedClassCount"] 已加载: jmx["java.lang:type=ClassLoading","LoadedClassCount"] 已卸载: jmx["java.lang:type=ClassLoading","UnloadedClassCount"]
3.10.java线程:
tomcat本地查看java线程:
总开启线程: java -jar cmdline-jmxclient-0.10.3.jar controlRole:tomcat 127.0.0.1:8090 java.lang:type=Threading TotalStartedThreadCount 活动线程: java -jar cmdline-jmxclient-0.10.3.jar controlRole:tomcat 127.0.0.1:8090 java.lang:type=Threading PeakThreadCount 线程峰值: java -jar cmdline-jmxclient-0.10.3.jar controlRole:tomcat 127.0.0.1:8090 java.lang:type=Threading PeakThreadCount
Zabbix监控java线程键值:
总开启线程: jmx["java.lang:type=Threading","TotalStartedThreadCount"] 活动线程: jmx["java.lang:type=Threading","ThreadCount"] 线程峰值: jmx["java.lang:type=Threading","PeakThreadCount"]
3.11.tomcat线程:
本地查看tomcat线程信息:
最大线程:java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 Catalina:name="http-nio-8080",type=ThreadPool maxThreads 当前线程:java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 Catalina:name="http-nio-8080",type=ThreadPool currentThreadCount 繁忙线程:java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 Catalina:name="http-nio-8080",type=ThreadPool currentThreadsBusy
Zabbix监控tomcat线程键值:
最大线程:jmx["Catalina:type=ThreadPool,name="http-nio-8080"",maxThreads] 当前线程:jmx["Catalina:type=ThreadPool,name="http-nio-8080"",currentThreadCount] 繁忙线程 jmx["Catalina:type=ThreadPool,name="http-nio-8080"",currentThreadsBusy]
3.12.网络流量:
Tomcat本地查看接收的字节:
接收的字节:java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 Catalina:name="http-nio-8080",type=GlobalRequestProcessor bytesReceived 发送的字节:java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 Catalina:name="http-nio-8080",type=GlobalRequestProcessor bytesSent
Zabbix监控tomcat接受字节键值:
接收的字节:jmx["Catalina:type=GlobalRequestProcessor,name="http-nio-8080"",bytesReceived] 发送的字节:jmx["Catalina:type=GlobalRequestProcessor,name="http-nio-8080"",bytesSent]
3.13.tomcat请求,出错请求:
tomcat本地查看tomcat请求数:
tomcat请求数: java -jar cmdline-jmxclient-0.10.3.jar - 192.168.10.46:8090 Catalina:name="http-nio-8080",type=GlobalRequestProcessor requestCount tomcat出错请求: java -jar cmdline-jmxclient-0.10.3.jar - 192.168.10.46:8090 Catalina:name="http-nio-8080",type=GlobalRequestProcessor errorCount
zabbix监控tomcat请求数:
tomcat请求数: jmx["Catalina:type=GlobalRequestProcessor,name="http-nio-8080"",requestCount] tomcat出错请求:jmx["Catalina:type=GlobalRequestProcessor,name="http-nio-8080"",errorCount]
4.问题的解答
最近有网友联系我说,看着我的博文搭建完了环境,获取不到数据,我帮助排查了一下,找到了问题所在,特此记录。
网友的报错如下:
# java -jar /root/cmdline-jmxclient-0.10.3.jar - 127.0.0.1:9080 java.lang:type=MemoryPool,name=PS Eden Space Usag 11/11/2016 10:03:37 +0800 org.archive.jmx.Client java.lang:name=PS Eden Space,type=MemoryPool is not a registered bean
4.1.解决思路
(1)通过jconsole查看:
(2)通过命令行查看:直接使用java -jar cmdline-jmxclient-0.10.3.jar – 127.0.0.1:8090命令可以获取所有的Mbean信息,输出太多这里就不贴输出结果了。我通过grep命令获取所有内存池的监控信息方式如下。
[root@tomcat-01 ~]# java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 | grep MemoryPool java.lang:name=Compressed Class Space,type=MemoryPool java.lang:name=Metaspace,type=MemoryPool java.lang:name=PS Old Gen,type=MemoryPool java.lang:name=PS Eden Space,type=MemoryPool java.lang:name=PS Survivor Space,type=MemoryPool java.lang:name=Code Cache,type=MemoryPool
然后我要获取Eden Space的所有属性信息方式如下:(一些特殊字符需要转义)
[root@tomcat-01 ~]# java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 java.lang:name=PS Eden Space,type=MemoryPool Attributes: Usage: Usage (type=javax.management.openmbean.CompositeData) PeakUsage: PeakUsage (type=javax.management.openmbean.CompositeData) MemoryManagerNames: MemoryManagerNames (type=[Ljava.lang.String;) UsageThreshold: UsageThreshold (type=long) UsageThresholdExceeded: UsageThresholdExceeded (type=boolean) UsageThresholdCount: UsageThresholdCount (type=long) UsageThresholdSupported: UsageThresholdSupported (type=boolean) CollectionUsageThreshold: CollectionUsageThreshold (type=long) CollectionUsageThresholdExceeded: CollectionUsageThresholdExceeded (type=boolean) CollectionUsageThresholdCount: CollectionUsageThresholdCount (type=long) CollectionUsage: CollectionUsage (type=javax.management.openmbean.CompositeData) CollectionUsageThresholdSupported: CollectionUsageThresholdSupported (type=boolean) Valid: Valid (type=boolean) Name: Name (type=java.lang.String) Type: Type (type=java.lang.String) ObjectName: ObjectName (type=javax.management.ObjectName) Operations: resetPeakUsage: resetPeakUsage Parameters 0, return type=void
那么我们在查看Eden Space空间的使用信息。就看到已经出来数据了
[root@tomcat-01 ~]# java -jar cmdline-jmxclient-0.10.3.jar - 127.0.0.1:8090 java.lang:name=PS Eden Space,type=MemoryPool Usage 12/03/2016 08:33:58 +0800 org.archive.jmx.Client Usage: committed: 712507392 init: 537395200 max: 712507392 used: 396006304