sftpgo/docs/logs.md

Logs

The log file is a stream of JSON structs. Each struct has a sender field that identifies the log type.

The logs can be divided into the following categories:

• "app logs", internal logs used to debug SFTPGo:
  • sender string. This is generally the package name that emits the log
  • time string. Date/time with millisecond precision
  • level string
  • message string
• "transfer logs", SFTP/SCP transfer logs:
  • sender string. Upload or Download
  • time string. Date/time with millisecond precision
  • level string
  • elapsed_ms, int64. Elapsed time, as milliseconds, for the upload/download
  • size_bytes, int64. Size, as bytes, of the download/upload
  • username, string
  • file_path string
  • connection_id string. Unique connection identifier
  • protocol string. SFTP or SCP
• "command logs", SFTP/SCP command logs:
  • sender string. Rename, Rmdir, Mkdir, Symlink, Remove, Chmod, Chown, Chtimes, SSHCommand
  • level string
  • username, string
  • file_path string
  • target_path string
  • filemode string. Valid for sender Chmod otherwise empty
  • uid integer. Valid for sender Chown otherwise -1
  • gid integer. Valid for sender Chown otherwise -1
  • access_time datetime as YYYY-MM-DDTHH:MM:SS. Valid for sender Chtimes otherwise empty
  • modification_time datetime as YYYY-MM-DDTHH:MM:SS. Valid for sender Chtimes otherwise empty
  • ssh_command, string. Valid for sender SSHCommand otherwise empty
  • connection_id string. Unique connection identifier
  • protocol string. SFTP, SCP or SSH
• "http logs", REST API logs:
  • sender string. httpd
  • level string
  • remote_addr string. IP and port of the remote client
  • proto string, for example HTTP/1.1
  • method string. HTTP method (GET, POST, PUT, DELETE etc.)
  • user_agent string
  • uri string. Full uri
  • resp_status integer. HTTP response status code
  • resp_size integer. Size in bytes of the HTTP response
  • elapsed_ms int64. Elapsed time, as milliseconds, to complete the request
  • request_id string. Unique request identifier
• "connection failed logs", logs for failed attempts to initialize a connection. A connection can fail for an authentication error or other errors such as a client abort or a timeout if the login does not happen in two minutes
  • sender string. connection_failed
  • level string
  • username, string. Can be empty if the connection is closed before an authentication attempt
  • client_ip string.
  • protocol string. Possible values are SSH, FTP, DAV
  • login_type string. Can be publickey, password, keyboard-interactive, publickey+password, publickey+keyboard-interactive or no_auth_tryed
  • error string. Optional error description