Microservices Engine:Custom policies for MSE

What is a custom policy?

Resource Access Management (RAM) policies are classified into system policies and custom policies. You can manage custom policies based on your business requirements.

• After you create a custom policy, you must attach the policy to a RAM user, RAM user group, or RAM role. This way, the permissions that are specified in the policy can be granted to the principal.

• You can delete a RAM policy that is not attached to a principal. If the RAM policy is attached to a principal, you must detach the RAM policy from the principal before you can delete the RAM policy.

• Custom policies support version control. You can manage custom policy versions based on the version management mechanism provided by RAM.

References

• Create a custom policy

• Modify the document and description of a custom policy

• Delete a custom policy

• Manage policy references

• Manage custom policy versions

Create a custom policy on the Visual editor tab

1. Log on to the RAM console as a RAM user who has administrative rights.

2. In the left-side navigation pane, choose Permissions > Policies.

3. On the Policies page, click Create Policy.

4. On the Create Policy page, click the Visual editor tab.

5. Configure the policy and click Next to edit policy information.

   1. In the Effect section, select Allow or Deny.

   2. In the Service section, select an Alibaba Cloud service.

      Note

      The Alibaba Cloud services that you can select are displayed in the Service section.

   3. In the Action section, select All action(s) or Select action(s).

      The system displays the actions that can be configured based on the Alibaba Cloud service you select in the previous step. If you select Select action(s), you must select actions.

   4. In the Resource section, select All resource(s) or Specified resource(s).

      The system displays the resources that can be configured based on the actions you select in the previous step. If you select Specified resource(s), you must click Add resource to configure one or more Alibaba Cloud Resource Names (ARNs) of resources. You can also click Match all to select all resources for each action that you select.

      Note

      The resource ARNs that are required for an action are tagged with Required. We strongly recommend that you configure the resource ARNs that are tagged with Required. This ensures that the custom policy takes effect as expected.

   5. In the Condition section, click Add condition to configure a condition.

      Conditions include Alibaba Cloud common conditions and service-specific conditions. The system displays the conditions that can be configured based on the Alibaba Cloud service and the actions that you select. You need to only select a condition key and configure the Operator and Value parameters.

   6. Click Add statement and repeat the preceding steps to configure multiple custom policy statements.

6. Specify the Name and Description fields.

7. Check and optimize the content of the custom policy.

   • Basic optimization

     The system automatically optimizes the policy statement. The system performs the following operations during basic optimization:

     • Deletes unnecessary conditions.

     • Deletes unnecessary arrays.

   • (Optional) Advanced optimization

     You can move the pointer over Optional: advanced optimize and click Perform. The system performs the following operations during the advanced optimization:

     • Splits resources or conditions that are incompatible with actions.

     • Narrows down resources.

     • Deduplicates or merges policy statements.

8. Click OK.

Examples of common custom policies for Microservices Registry

• Grant a user the read-only permissions on services of specific instances.

  {
      "Version": "1",
      "Statement": [
          {
              "Action": [
                  "mse:QueryNacosNaming"
              ],
              "Resource": [
                  "acs:mse:*:*:instance/${instanceId1}",
                  "acs:mse:*:*:instance/${instanceId2}"
              ],
              "Effect": "Allow"
          }
      ]
  }

• Grant a user the permissions to read and modify services of specific instances.

  {
      "Version": "1",
      "Statement": [
          {
              "Action": [
                  "mse:QueryNacosNaming",
                  "mse:UpdateNacosNaming"
              ],
              "Resource": [
                  "acs:mse:*:*:instance/${instanceId1}",
                  "acs:mse:*:*:instance/${instanceId2}"
              ],
              "Effect": "Allow"
          }
      ]
  }

• Grant a user the read-only permissions on services in a specific namespace of an instance.

  {
      "Statement": [
          {
              "Effect": "Allow",
              "Action": "mse:QueryNacosNaming",
              "Resource": "acs:mse:*:*:instance/${instance_id}/${namespaceId}"
          }
      ],
      "Version": "1"
  }

• Grant a user the permissions to read and modify services of the ${group} group in a specific namespace of an instance.

  {
      "Statement": [
          {
              "Effect": "Allow",
              "Action": [
                  "mse:QueryNacosNaming",
                  "mse:UpdateNacosNaming"
              ],
              "Resource": "acs:mse:*:*:instance/${instance_id}/${namespaceId}/${group}"
          }
      ],
      "Version": "1"
  }

• Grant a user the read-only permissions on the ${serviceName} service of the ${group} group.

  {
      "Statement": [
          {
              "Effect": "Allow",
              "Action": "mse:QueryNacosNaming",
              "Resource": "acs:mse:*:*:instance/${instance_id}/${namespaceId}/${group}/naming/${serviceName}"
          }
      ],
      "Version": "1"
  }

• Grant a user the permissions to read and modify the ${serviceName} service of the ${group} group.

  {
      "Statement": [
          {
              "Effect": "Allow",
              "Action": [
                  "mse:QueryNacosNaming",
                  "mse:UpdateNacosNaming"
              ],
              "Resource": "acs:mse:*:*:instance/${instance_id}/${namespaceId}/${group}/naming/${serviceName}"
          }
      ],
      "Version": "1"
  }

Examples of common custom policies for Microservices Governance

{
  "Version": "1",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "mse:QueryNamespace",
        "mse:GetApplicationListWithMetircs",
        "mse:ListNamespaces",
        "mse:GetEventFilterOptions",
        "mse:ListEventRecords",
        "mse:GetEventDetail",
        "mse:FetchLogConfig",
        "mse:QueryBusinessLocations",
        "mse:GetApplicationInstanceList",
        "mse:listGrayTag",
        "mse:QueryServiceDetailWithMetrics",
        "mse:GetEventDetail",
        "mse:ListEventsPage",
        "mse:ListEventsByType",
        "mse:GetApplicationTagList"
      ],
      "Resource": "acs:mse:*:*:*"
    },
    {
      "Effect": "Allow",
      "Action": "mse:GetApplicationList",
      "Resource": "acs:mse:*:*:namespace/${ns}"
    }
  ]
}

{
  "Version": "1",
  "Statement": [
    // All permissions on a specific Microservices Governance-enabled application
    {
      "Effect": "Allow",
      "Action": "mse:*",
      "Resource": "acs:mse:*:*:namespace/${ns}/application/${appName}"
    },
    // Read-only permissions on all Microservices Governance-enabled applications
    {
      "Effect": "Allow",
      "Action": [
        "mse:QueryNamespace",
        "mse:GetApplicationListWithMetircs",
        "mse:ListNamespaces",
        "mse:GetEventFilterOptions",
        "mse:ListEventRecords",
        "mse:GetEventDetail",
        "mse:FetchLogConfig",
        "mse:QueryBusinessLocations",
        "mse:GetApplicationInstanceList",
        "mse:listGrayTag",
        "mse:QueryServiceDetailWithMetrics",
        "mse:GetEventDetail",
        "mse:ListEventsPage",
        "mse:ListEventsByType",
        "mse:GetApplicationTagList"
      ],
      "Resource": "acs:mse:*:*:*"
    },
    {
      "Effect": "Allow",
      "Action": "mse:GetApplicationList",
      "Resource": "acs:mse:*:*:namespace/${ns}"
    }
  ]

{
"Version": "1",
    "Statement": [
        // All permissions on applications in a specific Microservices Governance namespace
        {
            "Effect": "Allow",
            "Action": "mse:*",
            "Resource": "acs:mse:*:*:namespace/${ns}/application/*"
        },
        // Read-only permissions on all Microservices Governance-enabled applications
        {
            "Effect": "Allow",
            "Action": [
                "mse:QueryNamespace",
                "mse:GetApplicationListWithMetircs",
                "mse:ListNamespaces",
                "mse:GetEventFilterOptions",
                "mse:ListEventRecords",
                "mse:GetEventDetail",
                "mse:FetchLogConfig",
                "mse:QueryBusinessLocations",
                "mse:GetApplicationInstanceList",
                "mse:listGrayTag",
                "mse:QueryServiceDetailWithMetrics",
                "mse:GetEventDetail",
                "mse:ListEventsPage",
                "mse:ListEventsByType",
                "mse:GetApplicationTagList",
                "mse:QueryAllSwimmingLaneGroup",
                "mse:QueryAllSwimmingLane",
                "mse:ListAppBySwimmingLaneGroupTags",
                "mse:ListAppBySwimmingLaneGroupTag",
                "mse:QuerySwimmingLaneById",
                "mse:GetTagsBySwimmingLaneGroupId",
                "mse:ListSwimmingLaneGateway",
                "mse:ListSwimmingLaneGatewayRoute",
                "mse:ListAuthPolicy",
                "mse:GetServiceList",
                "mse:GetServiceListPage"
            ],
            "Resource": "acs:mse:*:*:*"
        },
        // All permissions on applications in a specific Microservices Governance namespace
        {
            "Effect": "Allow",
            "Action": [
                "mse:GetApplicationList",
                "mse:CreateOrUpdateSwimmingLaneGroup",
                "mse:CreateOrUpdateSwimmingLane",
                "mse:DeleteSwimmingLaneGroup",
                "mse:DeleteSwimmingLaneGroup",
                "mse:DeleteSwimmingLane"
            ],
            "Resource": "acs:mse:*:*:namespace/${ns}"
        }
    ]
}

Examples of common custom policies for Cloud-native Gateway

• Example 1: Grant a RAM user the read and write permissions on the cloud-native gateway named gw-f23fcdca44c84769a6652245ecc****.

  {
    "Statement": [
      {
        "Action": [
          "mse:*"
        ],
        "Resource": "acs:mse:*:*:instance/gw-f23fcdca44c84769a6652245ecc****",
        "Effect": "Allow"
      }
    ],
    "Version": "1"
  }

• Example 2: Grant a RAM user the read-only permissions on all cloud-native gateways.

  {
    "Statement": [
      {
          "Action": [
          "mse:List*",
          "mse:Query*",
          "mse:Get*",
          "mse:Pull*"
        ],
        "Resource": "acs:mse:*:*:*",
        "Effect": "Allow"
      }
    ],
    "Version": "1"
  }

• Example 3: Grant a RAM user the operation permissions on the resources that are prompted by the MSE console.

   {
    "Statement": [
      {
          "Action": [
          "mse:UpdateGatewayName"
        ],
        "Resource": "acs:mse:cn-hangzhou:{ID of an Alibaba Cloud account}:instance/{ID of a cloud-native gateway} ",
        "Effect": "Allow"
      }
    ],
    "Version": "1"
  }

References

RAM authorization