To provide stable services, SSL-VPN periodically maintains the system, such as restarts instances. These system maintenance activities are known as O&M events. O&M events are generated and executed by VPN gateways. O&M events are usually triggered by regular system upgrades, hardware upgrades, and issue fixes. After SSL-VPN generates an O&M event, you can log on to the VPN Gateway console to view the affected resources and the default time when the O&M event is executed. You can modify the execution time of an O&M event on demand. The default execution time does not exceed 5 minutes. During the execution of the O&M event, SSL clients will be disconnected from the network. After the execution ends, the clients will reconnect to the network.
Background information
If IPsec-VPN connections are created on your VPN gateway, we recommend that you execute O&M events by following the steps in IPsec-VPN connection documentation.
SSL-VPN O&M events are interfaced with Network Intelligence Service (NIS). After SSL-VPN generates an O&M event, you can view information about the event in the NIS console and VPN Gateway console, including the affect resources and the default time when the event is executed.
In the NIS console, you can view the O&M event of VPN Gateway within the previous 30 days and the trend of changes in alerts generated for VPN gateway resources.
In the VPN Gateway console, you can view resources affected by the O&M event and modify the execution time of the O&M event.
This topic describes how to view O&M events in the VPN Gateway console. To view O&M events in the NIS console, see View event records.
View O&M events
- Log on to the VPN gateway console.
In the top navigation bar, select the region in which the VPN gateway resides.
On the VPN Gateways page, find the VPN gateway that you created.
In the O&M Events column, you can view the ID and default execution time of the current O&M event and the execution time of the previous O&M event.
View the affected resources and modify the execution time
When an instance is exposed to high risks while providing services, an O&M event is generated. We recommend that you view the affected resources and execute the O&M event at the earliest opportunity. After the O&M event ends, the SSL clients will reconnect to the network.
On the VPN Gateways page, find the VPN gateway that you created and click the ID.
Click O&M Events in the Actions column.
In the O&M Events dialog box, you can view the affected resources and modify the execution time.
NoteIf you only want to view the affected resources, do not click OK in the O&M Events dialog box.
Step
Description
①
Modify the execution time of the O&M event.
Execute Now (default)
In the O&M Events dialog box, after you click OK, the system immediately executes the event.
Specify Execution Time
Modify the execution time of the O&M event, which must not be later than the default execution time. The system automatically executes the O&M event at the specified time.
2
The gateway IP address of the O&M event.
For a VPN gateway of a dual-tunnel IPsec-VPN connection, you must confirm the current gateway IP address:
If the address is an SSL address, SSL clients connected to the gateway are affected. IPsec-VPN connections on the VPN gateway are not affected.
If the address is not an SSL address, SSL clients are not affected. Only IPsec-VPN connections on the VPN gateway are affected.
For VPN gateways that support single-tunnel IPsec-VPN connections, O&M events affect all IPsec-VPN connections on the gateways and SSL clients connected to the gateways.
NoteIf the O&M event affects IPsec-VPN connections, refer to IPsec-VPN connection documentation.