If the ECS instances created on a dedicated host are no longer suitable for your workloads, you can upgrade or downgrade the instance types (vCPU and memory) or modify the public bandwidth to address your workload requirements.
You can also assign a public IP address to a created ECS instance. For more information, see Assign a public IP address after an instance is created.
Upgrade or downgrade the instance type
|Upgrade or downgrade||Operation||Apply changes|
|Upgrade||Upgrade configurations of subscription instances||You can restart the instance and apply the new instance type by using one of the following methods.|
||You can restart the instance in one of the following ways to apply the new instance type.|
Upgrade or downgrade the public bandwidth
The following table is a list of scenarios for upgrading and downgrading the public bandwidth.
|Upgrade or downgrade||Operation||Takes effect immediately||Scope||Description|
|Upgrade||Upgrade the public bandwidth of a subscription instance||Yes||Subscription ECS instances that are not bound to elastic IP addresses (EIPs)||The basic bandwidth of the ECS instance is increased. The public or private IP address of the ECS instance is not changed after the upgrade.|
|Downgrade||Downgrade the public bandwidth during renewal||Takes effect in the next billing cycle||Subscription ECS instances||You can adjust the public bandwidth during renewal. When the public bandwidth is reduced to 0 Mbit/s, the public IP address of the ECS instance is released in the new billing cycle.|
|Downgrade the bandwidth of a subscription ECS instance in real time||Yes||Subscription ECS instances that are not bound to elastic IP addresses (EIPS)||The basic bandwidth of the ECS instance is reduced. The public or private IP address of the ECS instance is not changed after the downgrade.|