EVS Custom Policies

Example Custom Policies

• Example 1: Allowing users to create disks.

  {
          "Version": "1.1",
          "Statement": [
                  {
                          "Action": [
                                  "evs:volumes:list",
                                  "evs:volumes:get",
                                  "evs:quotas:get",
                                  "evs:volumeTags:list",
                                  "evs:types:get",
                                  "evs:volumes:create",
                                  "ecs:cloudServerFlavors:get",
                                  "ecs:cloudServers:list",
                                  "bss:balance:view",
                                  "bss:order:pay",
                                  "bss:order:update"
                          ],
                          "Effect": "Allow"
                  }
          ]
  }

• Example 2: Denying disk deletion

  A policy with only "Deny" permissions must be used in conjunction with other policies to take effect. If the permissions assigned to a user contain both "Allow" and "Deny", the "Deny" permissions take precedence over the "Allow" permissions.

  The following method can be used if you need to assign permissions of the EVS FullAccess policy to a user but you want to prevent the user from deleting EVS disks. Create a custom policy for denying disk deletion, and attach both policies to the group to which the user belongs. Then, the user can perform all operations on disks except deleting disks. The following is an example of a deny policy:

  {
          "Version": "1.1",
          "Statement": [
                  {
                          "Effect": "Deny",
                          "Action": [
                                  "evs:volumes:delete"
                          ]
                  }
          ]
  }

  • Example 2: Create a custom policy containing multiple actions.

    A custom policy can contain the actions of one or multiple services.

    Example policy containing multiple actions:

    {
        "Version": "5.0",
        "Statement": [
            {
                "Effect": "Allow",
                "Action": [
                    "evs:volumes:create",
                    "evs:volumes:list"
    
                ]
            },
            {
                "Effect": "Allow",
                "Action": [
                    "evs:volumes:create",
                    "evs:volumes:list",
                    "evs:volumes:get",
                    "evs:types:get",
                    "evs:quotas:get",
                    "evs:volumes:use"
                ]
            },
            {
                "Effect": "Allow",
                "Action": [
                    "ecs:cloudServerFlavors:get",
                    "ecs:cloudServers:listServersDetails",
                    "ecs:cloudServers:showServer",
                    "ecs:cloudServers:attach",
                    "ecs:cloudServers:detachVolume"
                ]
            }
        ]
    }