Bastion Host Client Access Anomaly Diagnosis

Diagnose the root causes of client connection timeouts or anomalies to Bastion Host, covering public network connectivity, instance configuration, Cloud Firewall blocking, and other key dimensions.

Strict Constraints

• Only perform read-only queries; strictly prohibit any write, modify, or delete operations
• All Alibaba Cloud API calls must use aliyun-cli commands
• After the user explicitly authorizes automatic execution, the Agent may automatically execute the read-only aliyun-cli query commands listed in this Skill
• Before executing each command, display the command to be executed and explain its purpose
• If aliyun-cli is unavailable, credentials are not configured, or permissions are insufficient, stop automatic execution and inform the user of manual troubleshooting steps
• In uncertain situations, prioritize asking the user for additional information; do not perform write operations on your own
• Never expose or persist credentials: do not copy, back up, move, print, cat, or read the aliyun CLI config/credential file (~/.aliyun/config.json) or any file containing an AccessKey, AccessKeySecret, or STS token, and never write credentials to any file. Credentials are pre-configured by the runtime environment; do not modify or back them up.
• Run every aliyun-cli command as a SINGLE LINE without backslash (\) line continuations, so that the command and all of its parameters appear on one physical line.

Output Language Requirements