最近在搞Kafka集群监控，之前也是看了网上的很多资料。之所以使用jmxtrans influxdb grafana是因为界面酷炫，可以定制化，缺点是不能操作Kafka集群，可能需要配合Kafka Manager一起使用。
环境信息
CentOS Linux release 7.6.1810 (Core)
jdk1.8.0_201
zookeeper-3.4.14
kafka_2.11-2.2.0
开启Kafka JMX端口
JMX（Java Management Extensions，即Java管理扩展）是一个为应用程序、设备、系统等植入管理功能的框架。JMX可以跨越一系列异构操作系统平台、系统体系结构和网络传输协议，灵活的开发无缝集成的系统、网络和服务管理应用。Kafka做为一款Java应用，已经定义了丰富的性能指标，(可以参考Kafka监控指标)，通过JMX可以轻松对其进行监控。
在${KAFKA_HOME}/bin/路径下修改kafka-run-class.sh脚本，第一行增加JMX_PORT=9999即可。
JMX_PORT=9999
重启Kafka
./bin/kafka-server-stop.sh ./bin/kafka-server-start.sh -daemon ./config/server.properties
重启后查看Kafka以及JMX端口状态
ps -ef | grep kafka root 8273 1 99 02:32 pts/0 00:00:09 /opt/jdk1.8.0_201/bin/java -Xmx1G -Xms1G -server -XX: UseG1GC -XX:MaxGCPauseMillis=20 ...... kafka.Kafka ./config/server.properties
netstat -anop | grep 9999 tcp6 0 0 :::9999 :::* LISTEN 8273/java off (0.00/0/0)
安装InfluxDB
InfluxDB是一个时间序列数据库，用于处理海量写入与负载查询。InfluxDB旨在用作涉及大量时间戳数据的任何用例（包括DevOps监控，应用程序指标，物联网传感器数据和实时分析）的后端存储。
下载InfluxDB rpm安装包
wget https://dl.influxdata.com/influxdb/releases/influxdb-1.7.5.x86_64.rpm --2019-04-10 02:52:30-- https://dl.influxdata.com/influxdb/releases/influxdb-1.7.5.x86_64.rpm Resolving dl.influxdata.com (dl.influxdata.com)... 54.192.151.21, 54.192.151.81, 54.192.151.87, ... Connecting to dl.influxdata.com (dl.influxdata.com)|54.192.151.21|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 46536692 (44M) [application/octet-stream] Saving to: ‘influxdb-1.7.5.x86_64.rpm’
100%[================================================================================================================================================================================>] 46,536,692 440KB/s in 60s
2019-04-10 02:53:37 (756 KB/s) - ‘influxdb-1.7.5.x86_64.rpm’ saved [46536692/46536692]
安装rpm包
rpm -ivh influxdb-1.7.5.x86_64.rpm Preparing... ################################# [100%] Updating / installing... 1:influxdb-1.7.5-1 ################################# [100%] Created symlink from /etc/systemd/system/influxd.service to /usr/lib/systemd/system/influxdb.service. Created symlink from /etc/systemd/system/multi-user.target.wants/influxdb.service to /usr/lib/systemd/system/influxdb.service.
启动InfluxDB
service influxdb start Redirecting to /bin/systemctl start influxdb.service
查看InfluxDB状态
ps -ef | grep influxdb influxdb 8475 1 2 03:01 ? 00:00:00 /usr/bin/influxd -config /etc/influxdb/influxdb.conf root 8486 7007 0 03:02 pts/0 00:00:00 grep --color=auto influxdb
service influxdb status Redirecting to /bin/systemctl status influxdb.service ● influxdb.service - InfluxDB is an open-source, distributed, time series database Loaded: loaded (/usr/lib/systemd/system/influxdb.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2019-04-10 03:01:48 EDT; 22s ago Docs: https://docs.influxdata.com/influxdb/ Main PID: 8475 (influxd) CGroup: /system.slice/influxdb.service └─8475 /usr/bin/influxd -config /etc/influxdb/influxdb.conf
Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.375804Z lvl=info msg="Starting precreation service" log_id=0EiWgWRl000 service=shard-precreation check_interval=10m advance_period=30m Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.375810Z lvl=info msg="Starting snapshot service" log_id=0EiWgWRl000 service=snapshot Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.375816Z lvl=info msg="Starting continuous query service" log_id=0EiWgWRl000 service=continuous_querier Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.375826Z lvl=info msg="Starting HTTP service" log_id=0EiWgWRl000 service=httpd authentication=false Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.375830Z lvl=info msg="opened HTTP access log" log_id=0EiWgWRl000 service=httpd path=stderr Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.375936Z lvl=info msg="Listening on HTTP" log_id=0EiWgWRl000 service=httpd addr=[::]:8086 https=false Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.375949Z lvl=info msg="Starting retention policy enforcement service" log_id=0EiWgWRl000 service=retention check_interval=30m Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.376138Z lvl=info msg="Listening for signals" log_id=0EiWgWRl000 Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.376389Z lvl=info msg="Storing statistics" log_id=0EiWgWRl000 service=monitor db_instance=_internal db_rp=monitor interval=10s Apr 10 03:01:48 node1 influxd[8475]: ts=2019-04-10T07:01:48.376534Z lvl=info msg="Sending usage statistics to usage.influxdata.com" log_id=0EiWgWRl000
使用InfluxDB客户端
influx Connected to http://localhost:8086 version 1.7.5 InfluxDB shell version: 1.7.5 Enter an InfluxQL query >
创建用户和数据库
> CREATE USER "admin" WITH PASSWORD 'admin' WITH ALL PRIVILEGES > create database "jmxDB"
创建完成InfluxDB的用户和数据库暂时就够用了，其它简单操作如下，后面会用到
#创建数据库 create database "db_name" #显示所有的数据库 show databases #删除数据库 drop database "db_name" #使用数据库 use db_name #显示该数据库中所有的表 show measurements #创建表，直接在插入数据的时候指定表名 insert test,host=127.0.0.1,monitor_name=test count=1 #删除表 drop measurement "measurement_name" #退出 quit
安装jmxtrans
jmxtrans的作用是自动去jvm中获取所有jmx格式数据，并按照某种格式（json文件配置格式）输出到其他应用程序（本例中的influxDB）。
下载jmxtrans rpm安装包
wget http://central.maven.org/maven2/org/jmxtrans/jmxtrans/270/jmxtrans-270.rpm --2019-04-10 03:18:14-- http://central.maven.org/maven2/org/jmxtrans/jmxtrans/270/jmxtrans-270.rpm Resolving central.maven.org (central.maven.org)... 151.101.40.209 Connecting to central.maven.org (central.maven.org)|151.101.40.209|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 18750744 (18M) [application/x-rpm] Saving to: ‘jmxtrans-270.rpm’
100%[================================================================================================================================================================================>] 18,750,744 342KB/s in 43s
2019-04-10 03:18:59 (422 KB/s) - ‘jmxtrans-270.rpm’ saved [18750744/18750744]
安装rpm包
rpm -ivh jmxtrans-270.rpm Preparing... ################################# [100%] Updating / installing... 1:jmxtrans-270-1 ################################# [100%]
jmxtrans相关路径
jmxtrans安装目录：/usr/share/jmxtrans json文件默认目录：/var/lib/jmxtrans/ 日志路径：/var/log/jmxtrans/jmxtrans.log
配置json，jmxtrans的github上有一段示例配置
{ "servers" : [ { "port" : "1099", "host" : "w2", "queries" : [ { "obj" : "java.lang:type=Memory", "attr" : [ "HeapMemoryUsage", "NonHeapMemoryUsage" ], "resultAlias":"jvmMemory", "outputWriters" : [ { "@class" : "com.googlecode.jmxtrans.model.output.InfluxDbWriterFactory", "url" : "http://127.0.0.1:8086/", "username" : "admin", "password" : "admin", "database" : "jmxDB", "tags" : {"application" : "kafka"} } ] } ] } ] }
host：监控服务器
port：jmx端口
obj：对应jmx的ObjectName，就是我们要监控的指标
attr：对应ObjectName的属性，可以理解为我们要监控的指标的值
resultAlias：对应metric 的名称，在InfluxDB里面就是MEASUREMENTS名
tags：对应InfluxDB的tag功能，对与存储在同一个MEASUREMENTS里面的不同监控指标可以做区分，我们在用Grafana绘图的时候会用到，建议对每个监控指标都打上tags
启动jmxtrans
service jmxtrans start Starting JmxTrans...
查看日志没有报错即为成功
tail /var/log/jmxtrans/jmxtrans.log
INFO | jvm 1 | 2019/04/10 04:44:31 | Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads.
INFO | jvm 1 | 2019/04/10 04:44:31 | Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered.
INFO | jvm 1 | 2019/04/10 04:44:31 |
INFO | jvm 1 | 2019/04/10 04:44:31 | 2019-04-10 04:44:31 [WrapperSimpleAppMain] INFO org.quartz.impl.StdSchedulerFactory - Quartz scheduler 'ServerScheduler' initialized from an externally opened InputStream.
INFO | jvm 1 | 2019/04/10 04:44:31 | 2019-04-10 04:44:31 [WrapperSimpleAppMain] INFO org.quartz.impl.StdSchedulerFactory - Quartz scheduler version: 1.8.6
INFO | jvm 1 | 2019/04/10 04:44:31 | 2019-04-10 04:44:31 [WrapperSimpleAppMain] INFO org.quartz.core.QuartzScheduler - JobFactory set to: com.googlecode.jmxtrans.guice.GuiceJobFactory@23822296
2019-04-10 04:44:31 [WrapperSimpleAppMain] level com.googlecode.jmxtrans.JmxTransformer [JmxTransformer.java:177] - Starting Jmxtrans on : /var/lib/jmxtrans
2019-04-10 04:44:31 [WrapperSimpleAppMain] level org.quartz.core.QuartzScheduler [QuartzScheduler.java:519] - Scheduler ServerScheduler_$_node11554885871753 started.
INFO | jvm 1 | 2019/04/10 04:44:31 | 2019-04-10 04:44:31 [WrapperSimpleAppMain] INFO c.googlecode.jmxtrans.JmxTransformer - Starting Jmxtrans on : /var/lib/jmxtrans
INFO | jvm 1 | 2019/04/10 04:44:31 | 2019-04-10 04:44:31 [WrapperSimpleAppMain] INFO org.quartz.core.QuartzScheduler - Scheduler ServerScheduler_$_node11554885871753 started.
附上两段通用的json文件
base_127.0.0.1.json
View Code topicA_1.json
View Code 安装Grafana
Grafana是一个跨平台的开源的度量分析和可视化工具，可以通过将采集的数据查询然后可视化的展示，并及时通知。
下载jmxtrans rpm安装包
wget https://s3-us-west-2.amazonaws.com/grafana-releases/release/grafana-6.0.2-1.x86_64.rpm --2019-04-10 04:53:15-- https://s3-us-west-2.amazonaws.com/grafana-releases/release/grafana-6.0.2-1.x86_64.rpm Resolving s3-us-west-2.amazonaws.com (s3-us-west-2.amazonaws.com)... 52.218.144.92 Connecting to s3-us-west-2.amazonaws.com (s3-us-west-2.amazonaws.com)|52.218.144.92|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 56002012 (53M) [application/x-RedHat-package-manager] Saving to: ‘grafana-6.0.2-1.x86_64.rpm’
100%[================================================================================================================================================================================>] 56,002,012 177KB/s in 2m 52s
2019-04-10 04:56:08 (318 KB/s) - ‘grafana-6.0.2-1.x86_64.rpm’ saved [56002012/56002012]
安装rpm包
rpm -ivh grafana-6.0.2-1.x86_64.rpm warning: grafana-6.0.2-1.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID 24098cb6: NOKEY error: Failed dependencies: fontconfig is needed by grafana-6.0.2-1.x86_64 urw-fonts is needed by grafana-6.0.2-1.x86_64
缺少依赖，下载依赖
yum install --downloadonly --downloaddir=./ fontconfig
yum localinstall fontconfig-2.13.0-4.3.el7.x86_64.rpm
yum install --downloadonly --downloaddir=./ urw-fonts
yum localinstall urw-fonts-2.4-16.el7.noarch.rpm
rpm -ivh grafana-6.0.2-1.x86_64.rpm warning: grafana-6.0.2-1.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID 24098cb6: NOKEY Preparing... ################################# [100%] Updating / installing... 1:grafana-6.0.2-1 ################################# [100%] ### NOT starting on installation, please execute the following statements to configure grafana to start automatically using systemd sudo /bin/systemctl daemon-reload sudo /bin/systemctl enable grafana-server.service ### You can start grafana-server by executing sudo /bin/systemctl start grafana-server.service POSTTRANS: Running script
启动Grafana
service grafana-server start Starting grafana-server (via systemctl): [ OK ]
打开浏览器
http://127.0.0.1:3000
先输入默认用户名密码admin/admin
设置新密码
点击Add data source
选择InfluxDB
输入连接信息后点击Save & Test
通过后点击Back返回
左侧 可以创建或引入仪表盘
类似于数据库SQL语句，查询相应的指标
计算平均每秒数值可以使用如上语法，用当前值减1分钟之前的值再除以60
具体展示效果就看各位的审美能力，这里就不贴出来了。至此，Kafka的JMX指标监控就完成了。
