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Using the TCP port monitoring

The following describes the need of TCP port monitoring and explains how to activate the TCP port monitoring through the Event Configuration menu.

TCP port monitoring​

In IT infrastructure management, TCP port monitoring is one of the basic and important ways to check the status of running services. TCP ports are the main communication paths for applications and services on the network. Each service communicates through a specific TCP port, directly or indirectly indicating the availability and performance of each service. Like this way, the TCP port monitoring plays an important role in ensuring the stability of the system by monitoring in real time whether the service is running normally.

For example, if an HTTP port such as 80 or 443 used by a web server, is not responding, the web server may be down or its access may be blocked due to network issues. In this situation, the TCP port monitoring can quickly detect problems and send notifications, allowing the administrator to respond immediately.

The WhaTap's server monitoring agent checks the status of the monitored servers in real time and also monitors the TCP communication status between the server and other services. This helps prevent service interruptions, maximize the system availability, and maintain the business continuity.

Activating an alert​

Note

Click Home > Select Project > Alert > Event Configuration > Server tab and select the + Add alert settings button.

Set up tcp port monitoring notifications

Default notifications​

The WhaTap Server Monitoring provides the default notification. You can complete basic notification settings without any additional actions by simply enabling the server Restart and data Not received within the event template as follows:

  • Restart: A notification is sent when the monitored server performs the system reboot.

  • Not received: If data is not received from the monitoring agent for a set period of time due to server downtime or network issues, a notification is sent for the condition.

Alerting the TCP port monitoring​

After activating Port in the WhaTap server Monitoring event template, set the monitoring target endpoint and TCP port through the following script.

#Specify the IP to be monitored in the following variable.
export TARGET_IP=127.0.0.1
#Specify the port to be monitored in the following variable.
export TARGET_PORT=80
echo "tcp.check.$TARGET_PORT=tcp://$TARGET_IP:$TARGET_PORT" |sudo tee -a /usr/whatap/infra/conf/whatap.conf

Confirming activation​

whatap.conf​

If the setting is completed to 127.0.0.1 in the Linux environment, the following content is added to the whatap.conf file in the /usr/whatap/infra/conf path.

whatap.conf
license=xxxxxxxxxx
whatap.server.host=xxx.xxx.xxx.xxx
createdtime=xxxxxxxxxx
tcp.check.8080=tcp://127.0.0.1:8080
Note

Multi-port monitoring​

To monitor multiple ports, additional configuration is required in the whatap.conf file. See the following example:

whatap.conf
# port 8080, port 80 
tcp.check.8080=tcp://127.0.0.1:8080
tcp.check.80=tcp://127.0.0.1:80

Once setup is completed, the server_tcpport category is added to the Analyze > Metrics Search menu. Metrics notifications can be used based on the value of the isAlive field in the category.

View metrics related to tcp port monitoring notifications

WhaTap server monitoring and TCP port monitoring​

By using the TCP port monitoring provided by WhaTap's server monitoring, you can effectively check the TCP status even in the environments where agents cannot be installed or private network areas where monitoring data cannot be directly transmitted to outside.

tcp port monitoring

The WhaTap's server agent periodically checks the TCP status for the monitored servers and other endpoints within the server. Therefore, in the environments where network communication is possible, more comprehensive and wide-ranging monitoring can be performed through the agents. This feature thoroughly monitors server status and connection status in complex network environments, enabling rapid response upon a failure.

By enabling various features of the WhaTap server monitoring, you can quickly understand and respond to the network and server issues of the operating system. WhaTap can help you ensure business continuity and maximize the stability of the services.