Introduction

Self Heal is a monitoring and recovery module.

It continuously monitors the system resources like CPU and Memory and monitors the critical Processes running.

Self heal also performs Connectivity tests.

In case of any problems encountered, Self Heal takes corrective actions like: Rebooting the device, Restarting required process based on predefined conditions.

Self-heal stores Reset Count and Reboot Count.

Executing System

Self Heal is enabled by default and is active at the time of boot up.

It periodically performs below actions.

• Resource monitoring: Monitors memory / cpu usage and if it goes beyond threshold, it reboots the device.
• Process monitoring: It will periodically monitors status of the critical processes.
  • Ccsp processes: If any of these processes crashed, it will be restarted via Self Heal.
  • "CcspCrSsp": If this process is crashed, device will be rebooted.
  • "syseventd": If syseventd is crashed, device will be rebooted.
• Connectivity test: If DNS or WAN_IP is down, device will stop the LAN functionality.

To enable or disable "Self Heal" functionality, use below command:

• syscfg set selfheal_enable true

Troubleshooting

• Error Messages

<Identify the error messages that a user may receive and the likely cause(s) and/or possible corrective actions for the error>

• Special Considerations

<If applicable, describe any special circumstances, actions, exceptions, etc., that should be considered for troubleshooting.>

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