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Help Center/ Cloud Eye/ FAQs/ Server Monitoring/ Agent Installation/ What Should I Do If a Service Port Is Used by the Agent?

What Should I Do If a Service Port Is Used by the Agent?

Updated on 2024-01-11 GMT+08:00

Cloud Eye Agent uses HTTP requests to report data. Any port in the range obtained from path /proc/sys/net/ipv4/ip_local_port_range may be occupied. If any service port is used by the Agent, you can modify path /proc/sys/net/ipv4/ip_local_port_range and restart the Agent to solve the problem.

Constraints

The restoration method in this section only supports new Agent version. If your Agent is of an earlier version, you are advised to upgrade it to the new version.

Run the following command to check the current Agent version:

if [[ -f /usr/local/uniagent/extension/install/telescope/bin/telescope ]]; then /usr/local/uniagent/extension/install/telescope/bin/telescope -v; elif [[ -f /usr/local/telescope/bin/telescope ]]; then echo "old agent"; else echo 0; fi
  • If old agent is displayed, the early version of the Agent is used.
  • If a version is returned, the new version of the Agent is used.
  • If 0 is returned, the Agent is not installed.

Procedure

  1. Log in to the primary node as a root user.
  2. Run the following command to open the sysctl.conf file:

    vim /etc/sysctl.conf

  3. (Permanent change) Add new ports to the sysctl.conf file:

    net.ipv4.ip_local_port_range=49152 65536

  4. Run the following command to make the change take effect:

    sysctl -p /etc/sysctl.conf

    NOTE:
    • The modification is permanent and still takes effect after the host is restarted.
    • To make a temporary modification (the password becomes invalid after the host is restarted), run the # echo 49152 65536 > /proc/sys/net/ipv4/ip_local_port_range command.
  5. Restart the Agent:
    • Windows:
      • In the directory where the Agent installation package is stored, double-click the shutdown.bat script to stop the Agent, and then execute the start.bat script to start the Agent.
    • Linux:
      • Run the following command to check the PID of telescope:
      • ps -ef |grep telescope
      • After the process is forcibly stopped, wait for 3 to 5 minutes for the Agent to automatically restart. Figure 1 shows an operation example.
      • kill -9 PID
        Figure 1 Restarting the Agent

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