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 :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