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Risky Operations

Risky operations are classified into the following levels:

Minor: Operation that does not modify the feature configurations but may result in the loss of user-defined key data.
Major: Operation that may cause managed resources to be unreachable or interrupt some services running on a node.
Critical: Operation that may cause interruption of a large number of services on the entire network.

For details about risky operations on server hardware, see Table 1. For details about risky operations on software, see Table 2.

**Table 1** Risky operations on hardware
No.	Operation	Impact	Risk Level	Operation Requirements in Production Environment	Operation Requirements in Test Environment
1	Replacing server parts	Perform this operation in strict accordance with the operation instructions to avoid function failures and hardware damages.	Critical	This operation must be performed within the maintenance and test period approved by the customer. This operation must be performed by maintenance personnel. This operation must be approved by the customer.	This operation must be performed by maintenance personnel or with their consent.
2	Powering off unexpectedly during the CPLD upgrade	This failure may damage the CPLD file, affecting the functions. Re-upgrading is required.
3	Powering off unexpectedly during the BIOS upgrade	This failure may damage the BIOS and affect its functions. Re-upgrading is required.
4	Powering off unexpectedly during the iBMC upgrade	This failure may damage the iBMC hardware and the server management page cannot be logged in. In this case, you need to replace the iBMC hardware.
5	Installing/Removing a server in/from a cabinet	Perform this operation in strict accordance with the service and maintenance guide to avoid hardware damage and personnel injury.

**Table 2** Risky operations on software
No.	Operation	Operation Entry	Impact	Risk Level	Workaround	Operation Requirements in Production Environment	Operation Requirements in Test Environment
1	Running the service network restart command during the normal operation of the system	Log in to the host and run the service network restart command.	The host, service provisioning, and VM startup may fail.	Critical	None	This operation must be performed within the maintenance and test period approved by the customer. This operation must be performed by maintenance personnel. This operation must be approved by the customer.	This operation must be performed by maintenance personnel or with their consent.
2	Running the ping -I command on the host to specify a network adapter	Log in to the host and run the ping -I command.	Host network communication may be interrupted. Running the ping command to check the network is recommended.
3	Manually deleting or modifying the message log files	Log in to the host and run the rm command to delete message logs from /var/log.	Logs cannot be displayed.
4	Clearing the user-defined information in the BIOS flash memory	Log in to the iBMC CLI and run the ipmcset -d clearcmos command.	Deleted information cannot be recovered.
5	Restoring the iBMC factory settings	Log in to the iBMC CLI and run the ipmcset -d restore command.	User data cannot be recovered once factory settings are restored.
6	Changing the IP address of a server	Log in to the host and run the ifconfig command to change the IP address.	This operation may affect service processes on the host and current service operations.
7	Running the rm -rf command to delete files	Log in to the host and delete files on the host or files required by the commercial release package.	This operation may affect service processes on the host and the video stream cloud phone service.

Parent topic: Risky Operations