Symptom

The Agent is overloaded if you see either of the following symptoms:

• On the Server Monitoring page of the Cloud Eye console, the Agent status frequently toggles between Running and Faulty.
• The time period in the monitoring panel is discontinuous.

Possible Causes

To prevent other services from being affected, Cloud Eye uses circuit-breaker to automatically stop the Agent process once it consumes too many CPU or memory resources on the server. After the Agent process is stopped, no monitoring data will be reported.

Circuit-breaker Principles

By default, the system checks whether the CPU usage of the Agent process exceeds 30% or the memory usage exceeds 700 MB (the tier-2 threshold) every minute. If the tier-2 threshold is exceeded, the Agent process exits. If the tier-2 threshold is not exceeded, check whether the CPU usage exceeds 10% or the memory usage exceeds 200 MB (the tier-1 threshold). If the tier-1 threshold is exceeded for three consecutive times, the Agent process exits and the exit is logged.

Procedure

1. Use the root account to log in to the ECS or BMS for which the Agent does not report data.
2. Go to the Agent installation path bin:

   cd /usr/local/telescope/bin

   

   In a Windows OS, the directory is telescope_windows_amd64\bin.

3. Modify configuration file conf.json.
   1. Open conf.json:

      vi conf.json

   2. Add the parameters listed in Table 1 to the conf.json file.

      Table 1 Parameter description

      Parameter	Description
      cpu_first_pct_threshold	Specifies the tier-1 threshold for the CPU usage. If the CPU usage of the Agent process is about 20%, you are advised to set this parameter to 35. The unit is percent (%).
      memory_first_threshold	Specifies the tier-1 threshold for the memory usage. If the Agent used up about 100 MB of memory, you are advised to set this parameter to 314572800 (300 MB). The unit is byte by default.
      cpu_second_pct_threshold	Specifies the tier-2 threshold for the CPU usage. If the CPU usage of the Agent process is about 20%, you are advised to set this parameter to 55. The unit is percent (%).
      memory_second_threshold	Specifies the tier-2 threshold for the memory usage. If the Agent process used up about 100 MB memory, you are advised to set this parameter to 734003200 (700 MB). The unit is byte by default.
      To query the CPU usage and memory usage of the Agent process, use the following method: Linux top -p telescope PID Windows View the details about the Agent process in Task Manager.

      {
          "InstanceId":"xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
          "ProjectId": "b5b92ee0xxxxxxxxxxxxxxxxcab92396",
          "AccessKey": "QZ0XGJXFxxxxxxxxT65R",
          "SecretKey": "lEv2aXAGwxxxxxxxxxxxxxxxxxxxxF8t0Bf18Tn2",
          "RegionId": "cn-north-1",
          "ClientPort": 0,
          "PortNum": 200,
          "cpu_first_pct_threshold": 35,
          "memory_first_threshold": 314572800,
          "cpu_second_pct_threshold": 70,
          "memory_second_threshold": 734003200
      }

   3. Save the conf.json file and exit:

      :wq

4. Restart the Agent:

   /usr/local/telescope/telescoped restart

   

   For a Windows OS, in the directory where the Agent installation package is stored, double-click the shutdown.bat script to stop the Agent, and execute the start.bat script to start the Agent.