Update README.md

Updated information on the privileges for delphix db user and delphix OS user.
Updated information on the different ways to create a dSource.

Author: arunskurian

README.md

@@ -6,12 +6,18 @@ The Delphix virtualization SDK (https://github.com/delphix/virtualization-sdk) p
 
 ## MySQL Plugin
 MySQL plugin is developed to virtualize MySQL data source leveraging the following built-in MySQL technologies:
-  - Replication: Allows staging MySQL instance to be kept in sync with teh source database. 
-  - Ingest Backup: Dsource can be created by ingesting a MySQL backup. 
-  - Subsetting: Allows to create a dSource using a specific list of tables from source database.
+Features:
   - Environment Discovery: MySQL plugin can discover environments where MySQL server is installed.
+  - Ingesting Data: Create a dSource using differnt methods specified below. 
   - VDB Creation: Single node MySQL VDB can be provisioned from the dsource snapshot.
 
+Different Ways to Ingest Data ( Dsource creation )
+  - Replication with Delphix initiated Backup: Delphix takes an initial backup from source DB to ingest data and create a dSource. Delphix also sets up a master-slave replication to keep this dSource in sync with the source database. User can select the databases they want to virtualize
+  - Replication with User Provided Backup: User provides a backup file from source DB to ingest data and create a dSource. Delphix sets up a master-slave replication to keep this dSource in sync with your source database. 
+  - User Provided Backup with no Replication: User provides a backup file from source DB to ingest data and create a dSource. When a new backup is available, user initiates a resync of the dSource to ingest data from the new backup.
+  - Manual Backup Ingestion: Delphix creates an empty seed datanase and User manually ingests a backup to create a dSource.
+  - Simple Tablespace Backup/Subsetting: Allows to create a dSource using a specific list of tables from source database.
+ 
 
 ### Table of Contents
 1. [Prerequisites](#requirements-plugin)
@@ -35,11 +41,11 @@ MySQL plugin is developed to virtualize MySQL data source leveraging the followi
 
 **MySQL database user with following privileges**
 1. delphixdb
-This MySQL user must be configured to have following privilege from the Delphix Engine IP as well as the staging host IP.
+This MySQL user must be configured to have following privilege from the Delphix Engine IP, the staging host IP and localhost
 To grant the privilege for this user, use the following command:
 
 ```js
-SQL> GRANT SELECT, RELOAD, REPLICATION CLIENT,REPLICATION SLAVE,SHOW VIEW, EVENT, TRIGGER on *.* to 'delphix'@'%';
+SQL> GRANT SELECT, SHUTDOWN, SUPER, RELOAD, REPLICATION CLIENT,REPLICATION SLAVE,SHOW VIEW, EVENT, TRIGGER on *.* to 'delphix'@'%';
 ```
 
 OR
@@ -48,41 +54,46 @@ OR
 SQL> GRANT ALL PRIVILEGES ON *.* TO '<delphix>'@'%';
 ```
 
-#### _Staging Requirements_
+#### _Staging Host Specific Requirements_
 
 **O/S user with following privileges**
-
-1. Same version as Source MySQL Binaries installed.
-2. A MySQL config file (my.cnf) to be used for the Staging DB instance must be available under Delphix Toolkit Directory. 
-3. Regular o/s user. should be able to ps all processes.
-4. Execute access on mysqldump, mysqld, mysql binary
-5. Empty folder on host to hold delphix toolkit  [ approximate 2GB free space ]
-6. Empty folder on host to mount nfs filesystem. This is just and empty folder with no space requirements and act as base folder for nfs mounts.
-7. sudo privileges for mount, umount. See sample below assuming `delphix_os` is used as delphix user.
-
+1. Regular o/s user. should be able to ps all processes.
+2. Should be in the same primary and secondary groups as mysql user ( or the MySQL binary owner )
+3. Execute access on all files within MySQL installation folder - Min permission level 775 recommended. 
+4. Sudo privileges for mount, umount. See sample below assuming `delphix_os` is used as delphix user.
+Example sudoers file entry
 ```shell
 Defaults:delphix_os !requiretty
 delphix_os ALL=NOPASSWD: \ 
-/bin/mount, /bin/umount
-```
+/bin/mount, /bin/umount, /bin/mkdir, /bin/rmdir, /bin/ps
 
-#### _Target Requirements_
-
-**O/S user with following privileges**
+**Other Staging Host Requirements**
 
 1. Same version as Source MySQL Binaries installed.
 2. A MySQL config file (my.cnf) to be used for the Staging DB instance must be available under Delphix Toolkit Directory. 
-3. Regular o/s user. should be able to ps all processes.
-4. Execute access on mysqldump, mysqld, mysql binary
-5. Empty folder on host to hold delphix toolkit  [ approximate 2GB free space ]
-6. Empty folder on host to mount nfs filesystem. This is just and empty folder with no space requirements and act as base folder for nfs mounts.
-7. sudo privileges for mount, umount. See sample below assuming `delphix_os` is used as delphix user.
+3. Empty folder on host to hold delphix toolkit  [ approximate 2GB free space ]
+4. Empty folder on host to mount nfs filesystem. This is just and empty folder with no space requirements and act as base folder for nfs mounts.
+
 
+#### _Target Requirements_
+
+**O/S user with following privileges**
+1. Regular o/s user. should be able to ps all processes.
+2. Should be in the same primary and secondary groups as mysql user ( or the MySQL binary owner )
+3. Execute access on all files within MySQL installation folder - Min permission level 775 recommended. 
+4. Sudo privileges for mount, umount. See sample below assuming `delphix_os` is used as delphix user.
+Example sudoers file entry
 ```shell
 Defaults:delphix_os !requiretty
 delphix_os ALL=NOPASSWD: \ 
-/bin/mount, /bin/umount
-```
+/bin/mount, /bin/umount, /bin/mkdir, /bin/rmdir, /bin/ps
+
+**Other Staging Host Requirements**
+
+1. Same version as Source MySQL Binaries installed.
+2. A MySQL config file (my.cnf) to be used for the Staging DB instance must be available under Delphix Toolkit Directory. 
+3. Empty folder on host to hold delphix toolkit  [ approximate 2GB free space ]
+4. Empty folder on host to mount nfs filesystem. This is just and empty folder with no space requirements and act as base folder for nfs mounts.
 
 
 ### <a id="upload-plugin"></a>Steps to build, upload and run unit tests for plugin