This file explains how to upgrade an existing install of Apache VCL 2.1
to Apache VCL 2.2. It assumed that you extracted the release archive
to /root/apache-VCL-2.2-incubating

The basic steps that will be performed:

1. Shutdown httpd and vcld services
2. Create backup of vcl database
3. Update mysql schema
4. Update Web code, create a backup, copy in new, make changes
5. Restart httpd service
6. Update Management node vcl code, create a backup, copy in new, make changes
7. Restart vcld service


1. Shutdown httpd and vcld services

   service httpd stop
	service vcld stop

2. Create a backup of vcl database

We will create a backup of the vcl database. This will provide a restore point
if necessary.

   mysqldump vcl > ~/vcl-pre2.2-upgrade.sql

3. Update mysql schema

This step updates the mysql schema.

   cd /root/apache-VCL-2.2-incubating
   mysql vcl < mysql/update-2.2.sql

4. Update web code

This step we will move the 2.1 web directory out of the way, so we can copy in
the new web code base. After copying in the new code, we will migrate your
configuration changes. These instructions assume that you installed the vcl
web code at /var/www/html/vcl. If you installed it elsewhere, replace
/var/www/html/vcl with your vcl web root.

   a. copy your old code out of the way

      cd /var/www/html
		mv vcl ~/vcl_2.1_web

	b. copy the new code in place

	   cd /root/apache-VCL-2.2-incubating
		cp -r web /var/www/html/vcl

	c. copy your 2.1 config files

	   cd ~/vcl_2.1_web/.ht-inc
		cp conf.php secrets.php pubkey.pem keys.pem /var/www/html/vcl/.ht-inc

	d. make /var/www/html/vcl/.ht-inc/maintenance writable by the web server - if
	   httpd on your server is running as the user apache:

	   chown apache /var/www/html/vcl/.ht-inc/maintenance

	e. add the following new entries to conf.php - You can copy them in from
	   .ht-inc/conf-default.php. Descriptions of each item can also be found
		in conf-default.php

	   * date_default_timezone_set('America/New_York');
		* $blockNotifyUsers = "adminuser@example.org";
		* define("SCHEDULER_ALLOCATE_RANDOM_COMPUTER", 0);
		* define("DOCUMENTATIONURL", "https://cwiki.apache.org/VCLDOCS/");
		* define("USEFILTERINGSELECT", 1);
		* define("FILTERINGSELECTTHRESHOLD", 1000);
		* define("DEFAULTTHEME", 'default');

5. Restart httpd service

	service httpd start

6. Update management node code

This step will move the 2.1 vcl code base out of the way, so we can cleanly copy
in the new management node(MN) code.

	a. Copy 2.1 code base to a backup location

		cd <your vcl MN code root path>
		ie. cd /usr/local/
		cp -r vcl ~/vcl_2.1_managementnode

	b. Copy in the 2.2 code base to /usr/local, copying in should preserve any
	drivers or other files you've added.

		/bin/cp -r /root/apache-VCL-2.2-incubating/managementnode/* /usr/local/vcl

	c. Make changes related to vcld.conf settings

	   * Open VCL web interface
		* Go to Management Nodes
		* Select Edit Management Node Information
		* Select Edit.
		* Set any relevant fields:
		* SysAdmin Email Address(es) - comma delimited list of vcl admin email
		  addresses
		* Address for Shadow Emails - a shared mail box, optional it receives
		  email of all notifications
		* Public NIC configuration method - Defines what type of NIC configuration is
		  used, options are dynamic DHCP, Manual DHCP, or static
		* End Node SSH Identity Key Files

7. Restart vcld service

	service vcld start