Monitoring node

On this page:

Install the following components which constitute the monitoring node:

InfluxDB - time-series database for collecting the metric data
Grafana - dashboard visualization layer
Jmxtrans - Collector to retrieve JMX metrics from remote hosts

Install and configure InfluxDB

Install InfluxDB on the monitoring node:

Create /etc/yum.repos.d/influxdb.repo with the following:

[influxdb]
name = InfluxDB Repository - RHEL $releasever
baseurl = https://repos.influxdata.com/rhel/$releasever/$basearch/stable
enabled = 1
gpgcheck = 1
gpgkey = https://repos.influxdata.com/influxdb.key

Install with the command:
```
sudo yum install influxdb
```

Configuration file is located in /etc/influxdb/influxdb.conf

Locate the section entitled "[[graphite]]"

Set enabled = true

In the templates section, create the following:

	templates = [
"*.org.apache.* host.measurement*" ,
"*.*.org.apache.* host.host.measurement*" ,
"*.*.*.org.apache.* host.host.host.measurement*" ,
"*.jvm.*  host.measurement*",
"*.*.jvm.*  host.host.measurement*",
"*.*.*.jvm.*  host.host.host.measurement*",
                ]

Open ports 2003 and 8086 on the Linux firewall

Create a file named /etc/firewalld/services/influxdb.xml with the following contents:

<?xml version="1.0" encoding="utf-8"?>
<service version="1.0">
<short>influxdb</short>
<description>InfluxDB</description>
<port port="8086" protocol="tcp"/>
<port port="2003" protocol="tcp"/>
</service>

Activate the firewall rule via the command:
```
sudo firewall-cmd --permanent --zone=$FWZONE --add-service=influxdb
```
where $FWZONE is the firewall zone this rule applies to.
You can check this active firewall rule by issuing the command:
```
sudo firewall-cmd --list-all
```

Enable the InfluxDB service for startup via the command:
```
sudo systemctl enable influxdb.service
```
Start the InfluxDB via the command:
```
sudo systemctl start influxdb
```

Create the collection databases with a 35-day retention policy:

sudo influx -execute "CREATE DATABASE graphite with duration 35d"
sudo influx -execute "CREATE DATABASE telegraf with duration 35d"
sudo influx -execute "CREATE DATABASE twcloud with duration 35d"
sudo influx -execute "CREATE DATABASE webapp with duration 35d"

Install and configure Grafana

To install Grafana on the monitoring node:

Install with the command

sudo yum install -y https://s3-us-west-2.amazonaws.com/grafana-releases/release/grafana-5.2.1-1.x86_64.rpm

Open ports 3000 on the Linux firewall

Create a file named /etc/firewalld/services/grafana.xml with the following contents:

<?xml version="1.0" encoding="utf-8"?>
<service version="1.0">

               <short>grafana</short>

              <description>Grafana</description>

              <port port="3000" protocol="tcp"/>

             </service>

Activate the firewall rule via the command:
```
sudo firewall-cmd --permanent --zone=$FWZONE --add-service=grafana
```
where $FWZONE is the firewall zone this rule applies to.
You can check the active firewall rule by issuing this command
```
sudo firewall-cmd --list-all
```

Reload the firewall rules via the command:
```
sudo firewall-cmd --reload
```
Enable the service on startup via the command:
```
sudo systemctl enable grafana-server
```
Start the Grafana service via the command:
```
sudo systemctl start grafana-server
```

Install and configure Jmxtrans

To install Jmxtrans on the monitoring node:

Install with the command:

sudo yum -y install  http://central.maven.org/maven2/org/jmxtrans/jmxtrans/270/jmxtrans-270.rpm

Delete the Jmxtrans System V service autostart:

chkconfig --del jmxtrans
and remove the System V startup script
rm -f /etc/init.d/jmxtrans

Create a configuration file in /var/lib/jmxtrans for each TWCloud node. We recommend naming them twcloud-hostname.json where hostname is the hostname of the TWCloud node.

{
   "servers":[
      {
         "port":"2468",
         "host":"IP_ADDRESS",
         "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":"twcloud",
                     "tags":{
                        "host":"HOST_NAME"
                     }
                  }
               ]
            },
            {
               "obj":"java.lang:type=GarbageCollector,*",
               "attr":[
                  "CollectionCount",
                  "CollectionTime"
               ],
               "resultAlias":"jvmGC",
               "outputWriters":[
                  {
                     "@class":"com.googlecode.jmxtrans.model.output.InfluxDbWriterFactory",
                     "url":"http://127.0.0.1:8086/",
                     "username":"admin",
                     "password":"admin",
                     "database":"twcloud",
                     "tags":{
                        "host":"HOST_NAME"
                     }
                  }
               ]
            },
            {
               "obj":"TWCloud:type=Metrics,item1=Client,*",
               "attr":[
                  "Count",
                  "Value",
                  "50thPercentile",
                  "99thPercentile"
               ],
               "resultAlias":"twc",
               "outputWriters":[
                  {
                     "@class":"com.googlecode.jmxtrans.model.output.InfluxDbWriterFactory",
                     "url":"http://127.0.0.1:8086/",
                     "username":"admin",
                     "password":"admin",
                     "database":"twcloud",
                     "tags":{
                        "host":"HOST_NAME"
                     }
                  }
               ]
            },
            {
               "obj":"TWCloud:type=Metrics,item1=Persistence,*",
               "attr":[
                  "Count",
                  "Value",
                  "50thPercentile",
                  "99thPercentile"
               ],
               "resultAlias":"twc",
               "outputWriters":[
                  {
                     "@class":"com.googlecode.jmxtrans.model.output.InfluxDbWriterFactory",
                     "url":"http://127.0.0.1:8086/",
                     "username":"admin",
                     "password":"admin",
                     "database":"twcloud",
                     "tags":{
                        "host":"HOST_NAME"
                     }
                  }
               ]       
            },
            {
               "obj":"TWCloud:type=Metrics,item1=ThreadPools,*",  
               "attr":[
                  "Count",
                  "Value",
                  "50thPercentile",
                  "99thPercentile"
               ],
               "resultAlias":"twc",
               "outputWriters":[
                  {
                     "@class":"com.googlecode.jmxtrans.model.output.InfluxDbWriterFactory",
                     "url":"http://127.0.0.1:8086/",
                     "username":"admin",
                     "password":"admin",
                     "database":"twcloud",
                     "tags":{
                        "host":"HOST_NAME"
                     }
                  }
               ]
            }
         ]
      }
   ]
}

Replace IP_ADDRESS with the IP Address of the TWCloud node. If on the local machine you may use 127.0.0.1. Replace HOST_NAME with the hostname of the TWCloud (as per the command "hostname").

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Install and configure InfluxDB

Install and configure Grafana

Install and configure Jmxtrans

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Monitoring node

Install and configure InfluxDB

Install and configure Grafana

Install and configure Jmxtrans