[MESOS-5640] Unify the help info for master/agent flags

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Labels: newbie
• Assignee: Unassigned
• Reporter: Guangya Liu
• Created: 18/Jun/16 01:26
• Updated: 13/Jul/16 16:58

Description

Currently, in master/flags.cpp, some flags end up with a "\n" while some not, this caused the output not consistent.

--[no-]hostname_lookup                                                         Whether we should execute a lookup to find out the server's hostname,
                                                                                 if not explicitly set (via, e.g., `--hostname`).
                                                                                 True by default; if set to `false` it will cause Mesos
                                                                                 to use the IP address, unless the hostname is explicitly set. (default: true)
  --http_authenticators=VALUE                                                    HTTP authenticator implementation to use when handling requests to
                                                                                 authenticated endpoints. Use the default
                                                                                 `basic`, or load an alternate
                                                                                 HTTP authenticator module using `--modules`.

                                                                                 Currently there is no support for multiple HTTP authenticators. (default: basic)
  --http_framework_authenticators=VALUE                                          HTTP authenticator implementation to use when authenticating HTTP
                                                                                 frameworks. Use the
                                                                                 `basic` authenticator or load an
                                                                                 alternate authenticator module using `--modules`.
                                                                                 Must be used in conjunction with `--http_authenticate_frameworks`.

I think we should follow the linux "man command" format by adding "\n" to all flags.

The following is a sample output for "man ls".

 -@      Display extended attribute keys and sizes in long (-l) output.

     -1      (The numeric digit ``one''.)  Force output to be one entry per line.  This is the default when output is not to a terminal.

     -A      List all entries except for . and ...  Always set for the super-user.

     -a      Include directory entries whose names begin with a dot (.).

     -B      Force printing of non-printable characters (as defined by ctype(3) and current locale settings) in file names as \xxx, where xxx is the numeric value of the character
             in octal.

     -b      As -B, but use C escape codes whenever possible.