Resurrect docs for gpcheck

Signed-off-by: NTushar Dadlani <tdadlani@pivotal.io>

gpMgmt/doc/gpcheck_help

+COMMAND NAME: gpcheck
+
+Verifies and validates Greenplum Database platform settings.
+
+*****************************************************
+SYNOPSIS
+*****************************************************
+
+gpcheck {{-f | --file} <hostfile_gpcheck> | {-h | --host} <host_ID>
+     | --local } [-m <master_host>] [-s <standby_master_host>] 
+     [--stdout | --zipout] [--config <config_file>]
+
+gpcheck --zipin <gpcheck_zipfile>
+
+gpcheck -?
+
+gpcheck --version
+
+
+*****************************************************
+DESCRIPTION
+*****************************************************
+
+The gpcheck utility determines the platform on which you are running 
+Greenplum Database and validates various platform-specific configuration 
+settings. gpcheck can use a host file or a file previously created with 
+the --zipout option to validate platform settings. At the end of a 
+successful validation process, GPCHECK_NORMAL message displays. If 
+GPCHECK_ERROR displays, one or more validation checks failed. You can 
+use also gpcheck to gather and view platform settings on hosts without 
+running validation checks. 
+
+Greenplum recommends that you run gpcheck as root. If you do not run 
+gpcheck as root, the utility displays a warning message and will not be 
+able to validate all configuration settings; Only some of these settings 
+will be validated. 
+
+
+*****************************************************
+OPTIONS
+*****************************************************
+
+--config <config_file>
+
+ The name of a configuration file to use instead of the default file 
+ $GPHOME/etc/gpcheck.cnf. This file specifies the OS-specific checks to 
+ run. 
+
+
+{-f | --file} <hostfile_gpcheck> 
+
+ The name of a file that contains a list of hosts that gpcheck uses to 
+ validate platform-specific settings. This file should contain a single 
+ host name for all hosts in your Greenplum Database system (master, 
+ standby master, and segments). gpcheck uses SSH to connect to the hosts. 
+
+
+{--h | --host} <host_ID> 
+
+ Checks platform-specific settings on the host in your Greenplum Database 
+ system specified by <host_ID>. gpcheck uses SSH to connect to the host. 
+
+
+--local 
+
+ Checks platform-specific settings on the segment host where gpcheck is 
+ run. This option does not require SSH authentication. 
+
+
+-m <master_host> 
+
+ This option is deprecated and will be removed in a future release. 
+
+
+-s <standby_master_host>
+
+ This option is deprecated and will be removed in a future release. 
+
+
+--stdout 
+
+ Display collected host information from gpcheck. No checks or 
+ validations are performed. 
+
+
+--zipout 
+
+ Save all collected data to a .zip file in the current working directory. 
+ gpcheck automatically creates the .zip file and names it 
+ gpcheck_<timestamp>.tar.gz. No checks or validations are performed. 
+
+
+--zipin <gpcheck_zipfile> 
+
+ Use this option to decompress and check a .zip file created with the 
+ --zipout option. gpcheck performs validation tasks against the file you 
+ specify in this option. 
+
+
+-? (help) 
+
+ Displays the online help. 
+
+
+--version 
+
+ Displays the version of this utility. 
+
+
+*****************************************************
+EXAMPLES
+*****************************************************
+
+Verify and validate the Greenplum Database platform settings by entering 
+a host file: 
+
+ # gpcheck -f hostfile_gpcheck 
+
+Save Greenplum Database platform settings to a zip file: 
+
+ # gpcheck -f hostfile_gpcheck --zipout 
+
+Verify and validate the Greenplum Database platform settings using a zip 
+file created with the --zipout option: 
+
+ # gpcheck --zipin gpcheck_timestamp.tar.gz 
+
+View collected Greenplum Database platform settings: 
+
+ # gpcheck -f hostfile_gpcheck --stdout 
+
+See Also 
+
+gpcheckperf 
+
+
+
+