Juniper Networks monitoring

Deprecation notice

This extension documentation is now deprecated and will no longer be updated. We recommend using the new Juniper Networks extension for improved functionality and support.

Learn how to monitor Junos OS devices using the Juniper ActiveGate extension.

Starting with Dynatrace OneAgent and ActiveGate version 1.231, we are upgrading the Extension Framework (also referred to as the plugins framework) from Python 3.6 to Python 3.8.

Consequences: Some Dynatrace extensions running in your environment may stop working and require redeployment of a new version prepared for Python 3.8.
Symptoms:
- No data is provided for affected metrics on dashboards, alerts, and custom device pages populated by the affected extension metrics.
- Extension logs display errors. Most often this will manifest itself as Python ModuleNotFoundError in the PluginAgent log.
- Sometimes the Python virtual machine crashes.
Impact: This issue affects only those extensions that use native libraries called from Python code distributed with the extension.

For remediation details, see Dynatrace Extensions.

Prerequisites

Juniper Network devices running Junos OS, version 12.1+
An Environment ActiveGate that has the ActiveGate plugin module installed and isn't used for synthetic or mainframe monitoring.
- ActiveGate version 1.175+ is ready to accept and run extensions. If you are running an earlier version of ActiveGate, see Install ActiveGate plugin module for instructions on installing the plugin module.
- For Environment ActiveGate installation instructions, see Dynatrace ActiveGate.
- One Environment ActiveGate can typically support 30-50 Juniper devices.

Permissions

The Junos OS user needs to have VIEW permissions for the following commands:

show system memory
show system processes brief
show interfaces
show system statistics

Extension installation

In Dynatrace Hub, select Juniper Networks (SNMP).
Select Download to get the extension ZIP file. Don't rename the file.
Unzip the ZIP file to the plugin_deployment directory of your ActiveGate host.
Restart the Dynatrace Remote Plugin Module service.
- On Linux, restart the service using the following commands with admin rights:
```
systemctl restart remotepluginmodule.service
```
- On Windows, run these two commands in a Command Prompt launched as Admin:
```
sc stop "Dynatrace Remote Plugin Module"
sc start "Dynatrace Remote Plugin Module"
```
In Dynatrace, go to Settings > Monitoring > Monitored technologies and select Add new technology monitoring > Add ActiveGate extension.
Select Upload extension and upload the ZIP file.
Enter the endpoint information requested for connecting to the Juniper device:
Setting
Details
Endpoint name
Enter a meaningful endpoint name.
Username
The username for connecting to the Junos OS API.
Password
The user password.
SSH Key File
Address of SSH private key to be used instead of a password.
Device Address
The hostname/IP of the device.
Device Port
SSH port of the device.
Device Alias
Optional alias or the device name.
Name of the group
If the device is part of a cluster, enter the name here to group the devices in the GUI.
Optional list of interfaces to ignore
Allows for filtering which interfaces should not be monitored.
Enter a comma-separated list to ignore more than one interface
You can use a regex expression
Optional list of interfaces to include
Allows for filtering which interfaces should be monitored.
Ignore interfaces that do not have an IP address
Select to ignore interfaces that do not have an IP address.
Enable debug logging
Select this only if a Dynatrace product expert requests it to investigate an issue.

Troubleshoot ActiveGate extensions

See Troubleshoot ActiveGate extensions.

Metrics

The IP address of all network interfaces and the ports used by the services are automatically captured, as are the following metrics:

Device

Availability
Wired memory used
Active memory used
CPU load