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Home > Success Center > Network Performance Monitor (NPM) > Port exhaustion caused by Linux agents

Port exhaustion caused by Linux agents

Updated May 30, 2017

Overview

When agents are deployed in Server-Initiated Communication mode on a Linux machine, the Orion server experiences port exhaustion due to creating too many connections. This affects agents installed on RHEL but could also affect other distributions and can be identified with a netstat -aon command on the Orion server or polling engine.

Environment

  • NPM 12.0.1 and later
  • SAM 6.3 and later
  • Linux agent

Cause 

This issue occurs when the SolarWinds agent is installed on an unsupported distribution of Linux. The agent creates many connections which are never terminated and the service keeps restarting on the Linux machine.

Resolution

  1. Check Agent Requirements and verify that the agent is not installed on a version that is older than what the agent supports.
  2. Uninstall the Linux agent package on the unsupported operating system:
    Note: The steps may vary depending on the distribution. SolarWinds recommends that you check with your Linux administrator to complete this operation.
    1. Run the following on the command line to list installed packages:
      yum list installed
    2. Find the swiagent.x86_64 package. 
      Note: The agent may be named differently in other distributions.
    3. Run the following command:
      yum uninstall swiagent.x86_64

 

 

 

Last modified
19:40, 29 May 2017

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