接続
- Ansible: UNREACHABLE! Host is unreachable
- Can't reach database server
- Cannot connect to the Docker daemon
- could not connect to server: Connection refused
- Elasticsearch: ConnectionError
- ERR_PROXY_CONNECTION_FAILED
- gRPC: UNAVAILABLE - Connection refused
- Host key verification failed
- Kafka: BROKER_NOT_AVAILABLE
- MongoDB: MongoNetworkError: failed to connect
- MongooseServerSelectionError: connection refused
- Network: Connection timed out
- RabbitMQ: Connection closed unexpectedly
- Redis: Connection refused
- SQLSTATE[HY000] [2002] Connection refused
- ssh: connect to host: Connection timed out
- SSH接続エラー
- Too many connections
- UNREACHABLE! SSH Error
- WebSocket: Close code 1006 (Abnormal Closure)
- WebSocket: Connection failed