alibabacloud-mongodb-instances-manage

name

alibabacloud-mongodb-instances-manage

description

Alibaba Cloud MongoDB full lifecycle management: create/query/scale/delete standalone, replica set, sharded cluster instances. Covers node management, security (whitelist/security group), public & SRV address, password reset, renewal, billing conversion, cloud disk reconfiguration, maintenance window, backup, version upgrade, HA switchover, account & tag management. Triggers: "MongoDB", "create MongoDB", "dds instance", "list instances", "MongoDB scaling", "add Mongos/Shard node", "MongoDB whitelist", "reset password", "allocate public address", "SRV address", "MongoDB renewal", "billing type conversion", "cloud disk reconfiguration", "delete MongoDB instance", "maintenance window", "restart MongoDB", "MongoDB backup", "upgrade MongoDB version", "HA switchover", "MongoDB tags", "MongoDB account"

Alibaba Cloud MongoDB Instance Management

Create and manage Alibaba Cloud ApsaraDB for MongoDB instances: Standalone (dev/test), Replica Set (read-heavy), Sharded Cluster (high concurrency).

Installation Requirements

Pre-check: Aliyun CLI >= 3.3.3 required Run aliyun version to verify >= 3.3.3. If not installed or version too low, see references/cli-installation-guide.md for installation instructions.

[MUST] run aliyun configure set --auto-plugin-install true to enable automatic plugin installation. [MUST] run aliyun plugin update to ensure that any existing plugins are always up-to-date.

aliyun version
aliyun plugin install --names dds kms resourcemanager bssopenapi

[MUST] CLI User-Agent — Every aliyun CLI command invocation must include: --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

[MUST] Enable AI-Mode — AI-mode is required for Agent Skill execution. Run the following commands before any CLI invocation:

aliyun configure ai-mode enable
aliyun configure ai-mode set-user-agent --user-agent "AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage"

[MUST] Disable AI-Mode at EVERY exit point — Before delivering the final response for ANY reason, always disable AI-mode first. This applies to ALL exit paths: workflow success, workflow failure, error/exception, user cancellation, session end, or any other scenario where no further CLI commands will be executed.

aliyun configure ai-mode disable

Information Display Standards

[MUST] All information displayed to the user must comply with:

1. No fabricated output: All displayed information must come from actual API query results. Speculation, fabrication, or splicing is strictly prohibited
2. Truncation handling: If API response is truncated (e.g., omitted), must re-query completely before displaying
3. Count validation: Displayed count must match TotalCount/actual count returned by API
4. No speculative time estimates: Do not provide time estimates without official documentation basis; only confirm status via API polling
5. Write operation response standard: After issuing any write operation (create, modify spec, cloud disk reconfiguration, add/delete node, etc.), only display RequestId (and DBInstanceId/OrderId if available), then ask the user whether to poll instance status. Do NOT start polling automatically before user confirmation.
6. Auto-polling rules after instance creation:
   • It typically takes 10-25 minutes for a newly created instance to reach Running status
   • Scenario A: User only creates an instance with no follow-up operations → ask whether to poll
   • Scenario B: User has follow-up operations after creation (e.g., modify spec, configure whitelist, etc.) and has NOT explicitly stated they will check status manually → MUST auto-poll, querying describe-db-instance-attribute every 30 seconds until status is Running or timeout (30 minutes)
   • Scenario C: User explicitly states "I'll check myself", "handle it later", etc. → do not auto-poll, handle as Scenario A
7. Security configuration guidance after instance creation: After instance creation completes (status is Running), MUST proactively ask whether to perform security configuration (see security configuration menu in "Parameter Confirmation" section)
8. Subscription instance display: Must show remaining days; instances expiring within 10 days must display a warning below the list and guide toward renewal

Instance Status Pre-check Standard

[MUST] Must check instance status before executing non-query operations:

1. Call describe-db-instance-attribute to check DBInstanceStatus
2. Operations can only be issued when status is Running

Status	Description	Can Issue
Running	Running	✅
DBInstanceClassChanging	Changing spec	❌
NodeCreating / NodeDeleting	Creating/Deleting node	❌
Creating	Creating	❌
Locked	Locked	❌ Investigate cause first

Locked status diagnosis (check LockMode field):

• LockByDiskQuota: Disk usage exceeded; auto-unlocks after expanding storage or cleaning data
• Other values: Overdue or expired; renew or recharge

aliyun dds describe-db-instance-attribute --db-instance-id <id> --region <region> \
  --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage 2>&1 | grep '"DBInstanceStatus"'

Authentication

Pre-check: Alibaba Cloud Credentials Required

• NEVER read/echo/print AK/SK values (do NOT run echo $ALIBABA_CLOUD_ACCESS_KEY_ID)
• ONLY use aliyun configure list to check credential status

aliyun configure list

If no valid profile exists, obtain credentials from RAM Console and configure outside this session.

RAM Permissions

This skill requires the following RAM permissions. See references/ram-policies.md § Full Permission Quick Reference for the complete list.

[MUST] Permission error handling: When detecting Forbidden.RAM/NoPermission/Forbidden/SubAccountNoPermission:

1. Identify the missing permission (extract Action and Resource from the error message)
2. Guide the user to refer to references/ram-policies.md to request permissions
3. Wait for user confirmation that permission has been granted before retrying; do NOT continue execution before the permission issue is resolved

---

Query Regions and Instances

[MUST] Region confirmation standard:

1. When the user has not specified a region, ask for the region first; do not iterate and search directly
2. Only iterate in the following order when the user explicitly states they are unsure: cn-beijing → cn-shanghai → ap-southeast-1 → us-west-1 → us-east-1 → cn-hangzhou → cn-shenzhen → cn-chengdu → cn-hongkong; if still not found, call DescribeRegions to get remaining regions
3. Query routing: Querying via cn-hangzhou may return instances from other regions; when displaying, RegionId must be based on the RegionId field returned by the API, not the query parameter
4. List display: Must be categorized by instance type; Subscription instances must show remaining days; instances expiring within 10 days must display a warning below the list and guide toward renewal

# Query instance list
# If user specifies instance type, query that type only; if not specified, must query both types separately:
aliyun dds describe-db-instances --biz-region-id <region> --db-instance-type replicate --page-size 50 --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
aliyun dds describe-db-instances --biz-region-id <region> --db-instance-type sharding --page-size 50 --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# ⚠️ Without --db-instance-type, only replicate is returned by default; sharded clusters will be missed

# Query single instance details
aliyun dds describe-db-instance-attribute --db-instance-id <id> --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

# Query all supported regions
aliyun dds describe-regions --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Cross-region lookup scripts and full-region scan scripts: see references/operations.md § Query Regions and Instances

Parameter Confirmation

[MUST] Before executing any create/modify operation, must display a complete parameter list to the user and obtain Y/Yes confirmation

Workflow: Collect parameters → Display parameter list → Wait for Y confirmation → Execute → Only display RequestId/DBInstanceId → Ask whether to poll → Display security configuration guidance after completion

Security configuration guidance menu must be displayed after instance creation:

[0] Set root password         - Cannot connect without password (priority)
[1] Set IP whitelist          - Configure allowed access IPs
[2] Bind ECS security group   - Control access via security group
[3] Associate global whitelist template - Use unified whitelist template
[4] Modify maintenance window - Set maintenance window
[5] Allocate public address   - Enable public access (dev/test only)
[N] Skip

Full parameter confirmation format and required/optional parameter tables: see references/operations.md § Parameter Confirmation

Core Workflow

Step	Name	Type	Description
0	Create resource group	Optional	Execute when resource group management is needed
0.5	Create KMS instance	Optional	Execute when cloud disk encryption is needed
1	Query VPC/VSwitch	Optional	Execute when user has not provided VPC
2	Validate VPC/VSwitch	Required	Ensure VPC/VSwitch are available
3	Validate zone	Required for standalone	Confirm target zone supports standalone
4	Parameter confirmation	Required	Must confirm before creation
5	Create instance	Required	Core operation
6	Verify creation	Required	Confirm instance creation succeeded

Step	Skip Condition
Create resource group	Using default resource group
Create KMS instance	Using default key or no encryption
Query VPC/VSwitch	User already provided VPC/VSwitch ID (but validation is still required)
Validate zone	Creating replica set or sharded cluster instance

[MUST] Mandatory validation when user provides VPC/VSwitch: Even if the user has provided VPC ID and VSwitch ID, must first call the following APIs to validate correctness and availability:

1. describe-rds-vpcs: Validate whether VPC ID exists and is available
2. describe-rds-vswitchs: Validate whether VSwitch ID exists in the specified VPC and matches the target zone
3. If any validation fails, must inform the user of the specific error and guide correction; do NOT directly use unvalidated VPC/VSwitch to create instances

[MUST] VPC/VSwitch validation must use DDS-specific APIs; generic VPC APIs (vpc DescribeVpcs/vpc DescribeVSwitches) are prohibited:

# Step 1: Query available VPC list for specified zone (DDS-specific)
aliyun dds describe-rds-vpcs --zone-id <zone> --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

# Step 2: Query available VSwitches under specified VPC (DDS-specific)
aliyun dds describe-rds-vswitchs --vpc-id <vpc-id> --zone-id <zone> --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Detailed commands and parameters: see references/operations.md § Step 2: Query and Validate VPC and VSwitch

Create Replica Set Instance

• --db-instance-class must be queried via describe-available-resource (specs differ by region/zone/version/storage type)
• --zone-id must match the zone of --vswitch-id, otherwise InvalidVpcIdRegion.NotSupported error
• Multi-zone deployment requires --secondary-zone-id and --hidden-zone-id

aliyun dds create-db-instance \
  --biz-region-id <region> --zone-id <zone> --engine-version <ver> \
  --db-instance-class <class> --db-instance-storage <GB> \
  --vpc-id <vpc> --vswitch-id <vsw> --network-type VPC \
  --replication-factor 3 --storage-type cloud_essd1 --charge-type PostPaid \
  --db-instance-description <name> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Optional: --secondary-zone-id --hidden-zone-id --readonly-replicas --encryption-key --resource-group-id
# Subscription: --charge-type PrePaid --period 1 --auto-renew true

Create Standalone Instance

• --replication-factor 1 --db-type replicate, storage type fixed to cloud_essd1
• Must use standalone-specific specs (ending with .1 like dds.sn2.large.1, or containing .single); cannot use replica set specs
• Not supported in some regions/zones; must query describe-available-resource --replication-factor 1 before creation
• When InvalidDBInstanceNodeCount error occurs, try other zones or suggest switching to replica set

aliyun dds create-db-instance ... --db-type replicate --replication-factor 1 \
  --db-instance-class <standalone-specific-spec> --storage-type cloud_essd1 --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Create Sharded Cluster Instance

• Minimum 2 Mongos and 2 Shards each (max 32); each Shard is a 3-node replica set by default
• --mongos / --replica-set parameters need to be repeated (specifying one node each time)
• Use --db-type sharding to query sharded cluster specs (--db-type normal is for replica sets only)

aliyun dds create-sharding-db-instance \
  --biz-region-id <region> --zone-id <zone> --engine MongoDB --engine-version <ver> \
  --vpc-id <vpc> --vswitch-id <vsw> --network-type VPC \
  --mongos Class=<class> --mongos Class=<class> \
  --replica-set Class=<class> ReadonlyReplicas=0 Storage=20 \
  --replica-set Class=<class> ReadonlyReplicas=0 Storage=20 \
  --config-server Class=<class> Storage=20 \
  --storage-type cloud_essd1 --charge-type PostPaid --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Instance Creation Error Diagnosis

Error diagnosis table: see references/operations.md § Instance Creation Error Diagnosis

Modify Replica Set Instance Configuration

[MUST] Before modification:

1. Query current configuration (describe-db-instance-attribute), extract DBInstanceStatus/DBInstanceClass/DBInstanceStorage/ReplicationFactor/ReadonlyReplicas/StorageType
2. Display "Current vs. New" comparison table and obtain user Y confirmation
3. Do NOT execute modification command before user confirmation

Limitations: Storage downsizing, instance type change, and storage type change are not supported (for ESSD conversion, use the Cloud Disk Reconfiguration section) Impact: Modification may cause 1-2 brief disconnections of ~30 seconds; recommended during off-peak hours

After successful modification command, only display RequestId/OrderId; do NOT auto-poll; must ask user for confirmation before starting

aliyun dds modify-db-instance-spec --db-instance-id <id> \
  [--db-instance-class <class>] [--db-instance-storage <GB>] \
  [--replication-factor 3/5/7] [--readonly-replicas 0-5] \
  [--order-type UPGRADE/DOWNGRADE] [--auto-pay true] \
  --effective-time Immediately/MaintainTime --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Full parameter description: see references/operations.md § Modify Replica Set Instance

Delete Instance

[MUST] Pre-deletion checklist:

1. Confirm ChargeType: PostPaid → can delete; PrePaid → cannot delete directly (wait expiry or console refund)
2. Cloud disk instances only: query describe-backup-policy → check BackupRetentionPolicyOnClusterDeletion (0=delete all on release / 1=keep last backup / 2=keep all backups) → ask user if they want to change it via modify-backup-policy --backup-retention-policy-on-cluster-deletion before deleting; see operations.md
3. [MUST] Display confirmation to user: instance ID, region, billing type, irreversible data loss warning → requiring the user to reply "confirm delete {instance ID}" before executing

aliyun dds delete-db-instance --db-instance-id <id> --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Sharded Cluster Node Management

[MUST] Key limitations:

• Must retain at least 2 Mongos/Shards each, max 32
• New Shard configuration (spec + storage) must be ≥ the highest-configured existing Shard
• modify-node-spec strictly serial: must wait for previous modification to complete (Running) before issuing the next
• Batch modification modify-node-spec-batch does NOT support changing Shard readonly replica count; use individual modification instead
• When modifying multiple Shards, must confirm spec mapping and execution order with the user
• Storage in NodesInfo must be a numeric type (not string), otherwise InvalidParameter error

# Query sharded cluster node details (ShardList/MongosList contain NodeId)
aliyun dds describe-db-instance-attribute --db-instance-id <id> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

# Add single node
aliyun dds create-node --db-instance-id <id> --node-type mongos/shard --node-class <class> [--node-storage <GB>] --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

# Batch add nodes (JSON format)
aliyun dds create-node-batch --db-instance-id <id> --nodes-info '{"Shards":[{"DBInstanceClass":"spec","Storage":40}],"Mongos":[{"DBInstanceClass":"spec"}]}' --auto-pay true --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

# Single node modification (strictly serial)
aliyun dds modify-node-spec --db-instance-id <id> --node-id <node-id> --node-class <class> [--node-storage <GB>] [--readonly-replicas 0-5] --effective-time Immediately/MaintainTime --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

# Batch modification (does not support readonly replica changes, requires DBInstanceName)
aliyun dds modify-node-spec-batch --db-instance-id <id> --nodes-info '{"Shards":[{"DBInstanceClass":"spec","DBInstanceName":"d-xxx","Storage":40}]}' --auto-pay true --effective-time Immediately --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

# Release node
aliyun dds delete-node --db-instance-id <id> --node-id <node-id> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Detailed command examples and NodesInfo format: see references/operations.md § Sharded Cluster Node Management

Cloud Disk Reconfiguration (Disk Type Upgrade)

[MUST] Independent from instance spec modification; used for disk type change or provisioned IOPS adjustment:

• Only supports ESSD PL1/PL2/PL3 → ESSD AutoPL (cloud_auto), one-way irreversible
• Prerequisite: Replica set storage > 40GB; Sharded cluster Shard storage > 40GB
• Provisioned IOPS range: 0~50000; interval between two modifications must be > 1 hour
• Before execution, must query and display MaxIOPS/MaxMBPS/StorageType, obtain user Y confirmation
• Do NOT execute before user confirmation

aliyun dds modify-db-instance-disk-type --db-instance-id <id> \
  --db-instance-storage-type cloud_auto [--provisioned-iops <0~50000>] \
  --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Full parameter description: see references/operations.md § Cloud Disk Reconfiguration

IOPS and Throughput Calculation Rules

[MUST] Applicable only to cloud disk instances (not applicable to local disk):

• When displaying baseline IOPS/throughput, must use MaxIOPS/MaxMBPS fields returned by API, NOT formula-calculated values (actual values ≥ formula values)
• Formula (reference): IOPS = min{1800+50×StorageGB, spec limit, disk type limit}
• IOPS improvement priority: Expand storage > Upgrade spec > Change disk type

Full spec limit tables and calculation examples: see references/operations.md § IOPS and Throughput Calculation Rules

Reset root Password

[MUST] For sharded clusters, must ask the user before resetting password:

Which node type's password do you want to reset?
[1] db node (mongod, stores business data)
[2] cs node (configServer, stores cluster metadata)
[3] Reset both (execute twice separately)

Determine execution count based on user's answer; do NOT auto-execute twice without user confirmation

Password rules: 8-32 characters, must contain at least three of: uppercase letters/lowercase letters/digits/special characters (!@#$%^&*()_+-=)

# Replica set / Standalone
aliyun dds reset-account-password --db-instance-id <id> --account-name root \
  --account-password <pwd> --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

# Sharded cluster (--character-type db or cs, required)
aliyun dds reset-account-password --db-instance-id <id> --account-name root \
  --account-password <pwd> --character-type db --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

---

Instance Security Configuration

Manage IP Whitelist

[MUST] Before modifying whitelist:

1. First query current whitelist (describe-security-ips) and display to user
2. Ask for modification mode: Cover (overwrite, ⚠️ deletes existing IPs) / Append (add, errors on duplicate IPs) / Extend (extend, recommended)
3. Do NOT use Cover mode without asking the user

aliyun dds describe-security-ips --db-instance-id <id> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
aliyun dds modify-security-ips --db-instance-id <id> --security-ips <IPs> --modify-mode Extend --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Specify group: add --security-ip-group-name <name>

Manage ECS Security Groups

Note: ECS security groups bound to sharded clusters only apply to Mongos nodes.

aliyun dds modify-security-group-configuration --db-instance-id <id> --security-group-id <sg-id> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
aliyun dds describe-security-group-configuration --db-instance-id <id> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Manage Global Whitelist Templates

[MUST] All global whitelist commands must specify both --region and --biz-region-id (same value) Use --db-cluster-id (NOT --db-instance-id) when associating with instances

# Create
aliyun dds create-global-security-ip-group --biz-region-id <region> --region <region> --global-ig-name <name> --gip-list <IPs> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Query
aliyun dds describe-global-security-ip-group --biz-region-id <region> --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Associate with instance
aliyun dds modify-global-security-ip-group-relation --db-cluster-id <id> --global-security-group-id <gid> --biz-region-id <region> --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

---

Manage Public Network Address

[MUST] Prerequisites for SRV address: (1) Cloud disk only; (2) Public SRV: allocate public address first; (3) Sharded cluster: allocate public on Mongos node (--node-id <s-xxx>) first; (4) Wait Running between each step

Check flow for sharded cluster public SRV: describe-sharding-network-address → if no public → allocate-public-network-address --node-id <mongos-s-xxx> → wait Running → allocate-db-instance-srv-network-address --srv-connection-type public → wait Running → confirm NodeType=logic with srv

[MUST] API Selection Rule for Network Address Query:

• Replica Set: MUST use describe-replica-set-role
• Sharded Cluster: MUST use describe-sharding-network-address
• FORBIDDEN: DO NOT use describe-db-instance-attribute for network address queries — it does not return complete network info for sharded clusters. In results: NetworkType=Public=public; NodeType=logic+ConnectionType=SRV=SRV address

# Allocate public address (add --node-id <s-xxx> for sharded clusters)
aliyun dds allocate-public-network-address --db-instance-id <id> [--node-id <s-xxx>] --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Release non-SRV public address
aliyun dds release-public-network-address --db-instance-id <id> [--node-id <s-xxx>] --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Release SRV public address (sharded cluster MUST use --node-id <mongos-id> + --connection-type SRV; omitting either causes InvalidParameters.Format)
aliyun dds release-public-network-address --db-instance-id <id> --node-id <s-xxx> --connection-type SRV --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Allocate SRV address (vpc=private, public=public; public SRV requires public network address first)
aliyun dds allocate-db-instance-srv-network-address --db-instance-id <id> --srv-connection-type vpc/public --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Query (replica set)
aliyun dds describe-replica-set-role --db-instance-id <id> --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Query (sharded cluster)
aliyun dds describe-sharding-network-address --db-instance-id <id> --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

---

Manage Instance Renewal

Renewal only applies to Subscription instances; auto-renewal takes effect the next day; no immediate charge on the day of activation. See references/operations.md for charge retry schedules.

# Manual renewal (--period: 1~9, 12, 24, 36 months)
aliyun dds renew-db-instance --db-instance-id <id> --period <months> --auto-pay true --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Enable auto-renewal (--duration required, in months)
aliyun dds modify-instance-auto-renewal-attribute --db-instance-id <id> --auto-renew true --duration 1 --biz-region-id <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Disable auto-renewal
aliyun dds modify-instance-auto-renewal-attribute --db-instance-id <id> --auto-renew false --biz-region-id <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Convert Instance Billing Type

Prerequisites: Instance status Running, not a legacy spec [MUST] Use transform-instance-charge-type (NOT TransformToPrePaid — that API is forbidden)

# Pay-As-You-Go → Subscription
aliyun dds transform-instance-charge-type --instance-id <id> --charge-type PrePaid --period 1 --pricing-cycle Month --auto-pay true --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage
# Subscription → Pay-As-You-Go (no period needed, may involve refund)
aliyun dds transform-instance-charge-type --instance-id <id> --charge-type PostPaid --region <region> --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

Manage Instance Maintenance Window

aliyun dds modify-db-instance-maintain-time --db-instance-id <id> --maintain-start-time "01:00Z" --maintain-end-time "02:00Z" --user-agent AlibabaCloud-Agent-Skills/alibabacloud-mongodb-instances-manage

---

Additional Operations

[MUST] All operations below require instance status Running. Follow write operation response standard (§ Information Display Standards, item 5). Detailed CLI commands and parameters: see references/operations.md § Additional Operations

Operation	CLI Command	Key Constraint
Restart instance	restart-db-instance	[MUST] confirm with user before executing: instance ID, expected ~30s disconnection; off-peak recommended
Restart node	restart-node --node-id --role-id	[MUST] confirm with user: instance ID + target node (RoleType/RoleId) before executing; Cloud disk only (StorageType=cloud_*), local disk → InsType.NotSupport; query RoleId via describe-role-zone-info (includes Hidden); describe-replica-set-role omits Hidden; sharded cluster requires both --node-id (e.g. d-xxx) AND --role-id
Manual backup	create-backup --backup-method	Cloud disk: must pass --backup-method Snapshot; local disk: Physical/Logical; cloud disk replica/sharded: --backup-retention-period (7-730 or -1 permanent); response use BackupJobId (NOT deprecated BackupId); poll via describe-backup-tasks then query describe-backups --backup-job-id; see operations.md
Query backups	describe-backups --start-time --end-time	Time: yyyy-MM-ddTHH:mmZ (UTC); response: Backups.Backup[]; filter by job: --backup-job-id
Query backup policy	describe-backup-policy	View retention days and window
Modify backup policy	modify-backup-policy	[MUST] always pass --preferred-backup-time AND --preferred-backup-period (required even when only changing other fields); query current values first via describe-backup-policy; sharded cluster cannot disable log backup
Upgrade major version	upgrade-db-instance-engine-version	One-way irreversible; query available versions first

Features Not Available via CLI

Feature	Description
KMS instance activation	After KMS instance creation, must be activated in KMS Console, configuring VPC/VSwitch
Free trial application	Must apply on Alibaba Cloud Free Trial page

Verification Methods

See references/verification-method.md for details.

Best Practices

See references/operations.md § Best Practices for details.

References

Reference	Description
references/operations.md	Detailed CLI command examples, parameter tables, IOPS calculation spec tables
references/related-apis.md	Complete API and CLI command list with external documentation links
references/ram-policies.md	RAM permission policies
references/verification-method.md	Verification methods
references/cli-installation-guide.md	CLI installation guide
references/acceptance-criteria.md	Test acceptance criteria