Updated on 2023-09-01 GMT+08:00
Why Can't I Delete a Security Group?
- The default security group is named default and cannot be deleted.
Figure 1 Default security group
- If you want to delete a security group that is associated with instances, such as cloud servers, containers, and databases, you need to remove the instances from the security group first.
If you want to know the instances associated with a security group, refer to How Do I Know the Instances Associated with a Security Group?
- A security group cannot be deleted if it is used as the source or destination of a rule in another security group.
You need to delete or modify the rule first and delete the security group.
For example, if the source of a rule in security group sg-B is set to sg-A, you need to delete or modify the rule in sg-B before deleting sg-A.
Parent topic: Security
Security FAQs
- Does a Modified Security Group Rule or a Network ACL Rule Take Effect Immediately for Existing Connections?
- Why Is Outbound Access on TCP Port 25 Blocked?
- How Do I Know the Instances Associated with a Security Group?
- Why Can't I Delete a Security Group?
- Can I Change the Security Group of an ECS?
- How Do I Configure a Security Group for Multi-Channel Protocols?
- Why Are Some Ports of ECSs Inaccessible?
- Why Is Access from a Specific IP Address Still Allowed After a Network ACL Rule That Denies the Access from the IP Address Has Been Added?
- Why Are My Security Group Rules Not Applied?
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