Why Does an Exception Occur When I Log In to My Resources Managed in CBH?

Symptoms

A black screen is displayed when a user attempts to log in to a managed resource.
The host fails to be connected or is unreachable when a user attempts to log in to the managed resource.
Resources managed with CBH cannot be logged in through CBH.

Possible Causes

Cause 1: The managed host responds slowly, and the network connection is abnormal.

Cause 2: The shared bandwidth of CBH does not meet user requirements.

Cause 3: The authorization of the related services on the host expires. For example, the Windows authorization expires, or the 120-day RDP service authorization expires.

Cause 4: The CBH instance and the managed host are not in the same VPC.

Solutions

Solution to cause 1

Restart the managed host. The network recovers after the managed host is restarted. Log in to the CBH system and check the network connection between CBH and the managed host.
If the fault persists after the host is restarted, check based on ECS Failures or Slow ECS Responses.

Solution to cause 2

Reconfigure the bandwidth of the EIP bound to the CBH instance. It is recommended that the bandwidth be greater than 5 Mbit/s. For details about the EIP bandwidth, see How Do I Check Whether the Bandwidth Exceeds the Limit?
Rectify the configuration and restart the CBH system.

Solution to cause 3

Renew the expired services on the managed host to obtain required authorization and log in to the managed hosts through CBH again.

Solution to cause 4

CBH can only directly manage resources in the same VPC as that of the CBH instance.

Although you can establish cross-region or cross-VPC network connections between a CBH instance and resources, such connections may be not stable enough for using the CBH system. If you really need to use CBH for cross-VPC or cross-region resource management, you can: