Events Supported by Event Monitoring

**Table 1** Elastic Cloud Server (ECS)
Event Source	Event Name	Event ID	Event Severity	Description	Solution	Impact
ECS	Restart triggered due to hardware fault	startAutoRecovery	Major	ECSs on a faulty host would be automatically migrated to another properly-running host. During the migration, the ECSs was restarted.	Wait for the event to end and check whether services are affected.	Services may be interrupted.
	Restart completed due to hardware failure	endAutoRecovery	Major	The ECS was recovered after the automatic migration.	This event indicates that the ECS has recovered and been working properly.	None
	Auto recovery timeout (being processed on the backend)	faultAutoRecovery	Major	Migrating the ECS to a normal host timed out.	Migrate services to other ECSs.	Services are interrupted.
	GPU link fault	GPULinkFault	Critical	The GPU of the host on which the ECS is located was faulty or was recovering from a fault.	Deploy service applications in HA mode. After the GPU fault is rectified, check whether services are restored.	Services are interrupted.
	ECS deleted	deleteServer	Major	The ECS was deleted on the management console. by calling APIs.	Check whether the deletion was performed intentionally by a user.	Services are interrupted.
	ECS restarted	rebootServer	Minor	The ECS was restarted on the management console. by calling APIs.	Check whether the restart was performed intentionally by a user. Deploy service applications in HA mode. After the ECS starts up, check whether services recover.	Services are interrupted.
	ECS stopped	stopServer	Minor	The ECS was stopped on the management console. by calling APIs. NOTE: The ECS is stopped only after CTS is enabled. For details, see Cloud Trace Service User Guide.	Check whether the restart was performed intentionally by a user. Deploy service applications in HA mode. After the ECS starts up, check whether services recover.	Services are interrupted.
	NIC deleted	deleteNic	Major	The ECS NIC was deleted on the management console. by calling APIs.	Check whether the deletion was performed intentionally by a user. Deploy service applications in HA mode. After the NIC is deleted, check whether services recover.	Services may be interrupted.
	ECS resized	resizeServer	Minor	The ECS specifications were resized on the management console. by calling APIs.	Check whether the operation was performed by a user. Deploy service applications in HA mode. After the ECS is resized, check whether services have recovered.	Services are interrupted.
	GuestOS restarted	RestartGuestOS	Minor	The guest OS was restarted.	Contact O&M personnel.	Services may be interrupted.
	ECS failure due to abnormal host processes	VMFaultsByHostProcessExceptions	Critical	The processes of the host accommodating the ECS were abnormal.	Contact O&M personnel.	The ECS is faulty.
	Startup failure	faultPowerOn	Major	The ECS failed to start.	Start the ECS again. If the problem persists, contact O&M personnel.	The ECS cannot start.
	Host breakdown risk	hostMayCrash	Major	The host where the ECS resides may break down, and the risk cannot be prevented through live migration due to some reasons.	Migrate services running on the ECS first and delete or stop the ECS. Start the ECS only after the O&M personnel eliminate the risk.	The host may break down, causing service interruption.
	Scheduled migration completed	instance_migrate_completed	Major	Scheduled ECS migration is completed.	Wait until the ECSs become available and check whether services are affected.	Services may be interrupted.
	Scheduled migration being executed	instance_migrate_executing	Major	ECSs are being migrated as scheduled.	Wait until the event is complete and check whether services are affected.	Services may be interrupted.
	Scheduled migration canceled	instance_migrate_canceled	Major	Scheduled ECS migration is canceled.	None	None
	Scheduled migration failed	instance_migrate_failed	Major	ECSs failed to be migrated as scheduled.	Contact O&M personnel.	Services are interrupted.
	Scheduled migration to be executed	instance_migrate_scheduled	Major	ECSs will be migrated as scheduled.	Check the impact on services during the execution window.	None
	Scheduled specification modification failed	instance_resize_failed	Major	Specifications failed to be modified as scheduled.	Contact O&M personnel.	Services are interrupted.
	Scheduled specification modification completed	instance_resize_completed	Major	Scheduled specifications modification is completed.	None	None
	Scheduled specification modification being executed	instance_resize_executing	Major	Specifications are being modified as scheduled.	Wait until the event is completed and check whether services are affected.	Services are interrupted.
	Scheduled specification modification canceled	instance_resize_canceled	Major	Scheduled specifications modification is canceled.	None	None
	Scheduled specification modification to be executed	instance_resize_scheduled	Major	Specifications will be modified as scheduled.	Check the impact on services during the execution window.	None
	Scheduled redeployment to be executed	instance_redeploy_scheduled	Major	ECSs will be redeployed on new hosts as scheduled.	Check the impact on services during the execution window.	None
	Scheduled restart to be executed	instance_reboot_scheduled	Major	ECSs will be restarted as scheduled.	Check the impact on services during the execution window.	None
	Scheduled stop to be executed	instance_stop_scheduled	Major	ECSs will be stopped as scheduled as they are affected by underlying hardware or system O&M.	Check the impact on services during the execution window.	None
	Live migration started	liveMigrationStarted	Major	The host where the ECS is located may be faulty. Live migrate the ECS in advance to prevent service interruptions caused by host breakdown.	Wait for the event to end and check whether services are affected.	Services may be interrupted for less than 1s.
	Live migration completed	liveMigrationCompleted	Major	The live migration is complete, and the ECS is running properly.	Check whether services are running properly.	None
	Live migration failure	liveMigrationFailed	Major	An error occurred during the live migration of an ECS.	Check whether services are running properly.	There is a low probability that services are interrupted.
	ECC uncorrectable error alarm generated on GPU SRAM	SRAMUncorrectableEccError	Major	There are ECC uncorrectable errors generated on GPU SRAM.	If services are affected, submit a service ticket.	The GPU hardware may be faulty. As a result, the GPU memory is faulty, and services exit abnormally.
	FPGA link fault	FPGALinkFault	Critical	The FPGA of the host on which the ECS is located was faulty. recovering from a fault.	Deploy service applications in HA mode. After the FPGA fault is rectified, check whether services are restored.	Services are interrupted.

Once a physical host running ECSs breaks down, the ECSs are automatically migrated to a functional physical host. During the migration, the ECSs will be restarted.

**Table 2** Elastic IP (EIP)
Event Source	Event Name	Event ID	Event Severity
EIP	EIP released	deleteEip	Minor

**Table 3** Elastic IP and bandwidth
Event Source	Event Name	Event ID	Event Severity
Elastic IP and bandwidth	VPC deleted	deleteVpc	Major
	VPC modified	modifyVpc	Minor
	Subnet deleted	deleteSubnet	Minor
	Subnet modified	modifySubnet	Minor
	Bandwidth modified	modifyBandwidth	Minor
	VPN deleted	deleteVpn	Major
	VPN modified	modifyVpn	Minor

**Table 4** Elastic Volume Service (EVS)
Event Source	Event Name	Event ID	Event Severity	Description	Solution	Impact
EVS	Update disk	updateVolume	Minor	Update the name and description of an EVS disk.	No further action is required.	None
	Expand disk	extendVolume	Minor	Expand an EVS disk.	No further action is required.	None
	Delete disk	deleteVolume	Major	Delete an EVS disk.	No further action is required.	Deleted disks cannot be recovered.
	QoS upper limit reached	reachQoS	Major	The I/O latency increases as the QoS upper limits of the disk are frequently reached and flow control triggered.	Change the disk type to one with a higher specification.	The current disk may fail to meet service requirements.

**Table 5** Identity and Access Management (IAM)
Event Source	Event Name	Event ID	Event Severity
IAM	Login	login	Minor
	Logout	logout	Minor
	Password changed	changePassword	Major
	User created	createUser	Minor
	User deleted	deleteUser	Major
	User updated	updateUser	Minor
	User group created	createUserGroup	Minor
	User group deleted	deleteUserGroup	Major
	User group updated	updateUserGroup	Minor
	Identity provider created	createIdentityProvider	Minor
	Identity provider deleted	deleteIdentityProvider	Major
	Identity provider updated	updateIdentityProvider	Minor
	Metadata updated	updateMetadata	Minor
	Security policy updated	updateSecurityPolicies	Major
	Credential added	addCredential	Major
	Credential deleted	deleteCredential	Major
	Project created	createProject	Minor
	Project updated	updateProject	Minor
	Project suspended	suspendProject	Major

**Table 6** Key Management Service (KMS)
Event Source	Event Name	Event ID	Event Severity
KMS	Key disabled	disableKey	Major
	Key deletion scheduled	scheduleKeyDeletion	Minor
	Grant retired	retireGrant	Major
	Grant revoked	revokeGrant	Major

**Table 7** Object Storage Service (OBS)
Event Source	Event Name	Event ID	Event Severity
OBS	Bucket deleted	deleteBucket	Major
	Bucket policy deleted	deleteBucketPolicy	Major
	Bucket ACL configured	setBucketAcl	Minor
	Bucket policy configured	setBucketPolicy	Minor