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  • 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:

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Lists of self heal supported dmcli commands :

S.NODMCLI COMMANDSDescription
1.Device.SelfHeal.X_RDKCENTRAL-COM_EnableUsed to enable/disable self heal functionality
2.Device.SelfHeal.X_RDKCENTRAL-COM_MaxRebootCountUsed to set the maximum reboot count for rebooting the rpi device once the cpu and memory threshold value was reached as 100(default value).
3.Device.SelfHeal.X_RDKCENTRAL-COM_MaxResetCountUsed to set the maximum reset count for connectivity test. for example, if  it reaches 3, after that it doesn't stop the lan functionality. If we want , we can increase the reset count also.
4.Device.SelfHeal.X_RDKCENTRAL-COM_DNS_PINGTEST_EnableUsing this command to enable the PING function for connectivity tests.By default, it set as TRUE.
5.Device.SelfHeal.X_RDKCENTRAL-COM_DNS_URLUsing this command to set the DNS url for PING function for connectivity test , By default, it set as www.google.com
6.Device.SelfHeal.ConnectivityTest.X_RDKCENTRAL-COM_PingIntervalUsing this command to set the PING interval time for connectivity test . By default, it set as 60.
7.Device.SelfHeal.ConnectivityTest.X_RDKCENTRAL-COM_CorrectiveActionUsing this command to enable/disable for Corrective Action for self heal scripts. By default, it set as TRUE.
8.Device.SelfHeal.ResourceMonitor.X_RDKCENTRAL-COM_UsageComputeWindowUsing this command to set the resource monitor interval time. By default, it set as 1.
9.Device.SelfHeal.ResourceMonitor.X_RDKCENTRAL-COM_AvgCPUThresholdUsing this command to set the AVG CPU threshold value. By default, it set as 100
10.Device.SelfHeal.ResourceMonitor.X_RDKCENTRAL-COM_AvgMemoryThresholdUsing this command to set the AVG Memory threshold value. By default, it set as 100



Note :

  1. For Connectivity Test  sequence ,

                            i) After boot-up,Very  First cycle  - random sleep functionality call was called.

                           II) Second cycle onwards - sleep will calculate based on below commands

                                                  Device.SelfHeal.ConnectivityTest.X_RDKCENTRAL-COM_PingInterval - value of this command * 60 . For example : By default, PingInterval value as 60 . so, sleep will be 3600.

         2. For Resource Monitor Sequence as well as task monitor sequence,

                          i)  First cycle onwards -  sleep will calculate based on below commands

                                                   Device.SelfHeal.ResourceMonitor.X_RDKCENTRAL-COM_UsageComputeWindow *60 .  For example : By default, RMInterval value as 1 . so, sleep will be 60.

        3. Self heal logs will be created on below folder,

                             /rdklogs/logs/SelfHeal.txt.0