Liz Quilty – Security, Scaling & High End Hosting for WordPress sites

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WordCamp New Zealand

Liz Quilty – Security, Scaling & High End Hosting for WordPress sites from WordCampNZ 2012 devs April 22

Tecnologia Negócios

Scaling & High End
Hosting for
WordPress
By Liz Quilty

Security
Lots of articles exist already, read them!

Plug-ins
•  WP-Sentinel
•  WordPress Sentinel (they are different!)

Permissions
Version Control - CVS, SVN, Git
Backups!

Version Control System
Set Apache to ignore .svn .git .cvs, etc
Ignore files
• 
• 
wp-conﬁg.php

• 
wp-content/uploads/
wp-local-config.php
capistrano for deploy

Develop/test on local or Dev machine

Scaling Single server

•  NGINX + phpFCGI ?
•  Varnish + apache + mod_php
•  PHP-APC
•  WP-Supercache/W3-total-cache
•  Batcache / Memcached
•  Enable the WordPress Object Cache
define(ENABLE_CACHE, true);

Watch for PHP-CGI/FCGI memory usage!

Take Media Offsite

Videos - Youtube,Vimo
Files - CDN, Flickr, DropBox, S3
Comments - IntenseDebate, Discus

These help save disk & IO, resources

The Cloud?
Cost
Space
Redundancy
Control - or lack of it
Openstack
Cloudmin

Control Panels? What Control Panels!

Scaling Multiple
Same as Single .. plus more

DNS Round Robin ?
Heartbeat IP Failover ?
Separate DB server w/ Replication ?
File replication ?
Controlling multiple servers ?

Multiple Layouts - Planning is key!

DB Replication
Database:
•  Mysql Master/Master replication
•  Mysql Master/Slave
•  Separate DB server(s)

•  HyperDB Plugin

Replication of Files

•  Unisen
•  rsync
•  bitpocket
•  DRBD
•  Rsync
•  Gluster

Controlling servers

CFEngine
Puppet
ClusterSSH

#!/bin/bash
HOSTS="machine1 machine2 machine3 machine4";
if [ $1 ];then
for i in $HOSTS; do ssh $i "$@"; done
fi

Have a Plan, test it
10 Plan
20 Test
30 Adapt
40 Goto 20
Implement

Don't wait until you have a problem to test it!

Monitoring - NewRelic, Nagios, etc
Failover Plans, like Heartbeat, DNS, etc

Things to remember
Backup! Backup! Backup!
Multiple Sites for redundancy
Documentation in case developer/admin
disappears

http://www.freesoftwaremagazine.com/articles/easy_file_sync_bitpocket

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Liz Quilty – Security, Scaling & High End Hosting for WordPress sites

1. Scaling & High End Hosting for WordPress By Liz Quilty

2. There is no single solution

3. Work out what You Want and Need!

4. Security Lots of articles exist already, read them! Plug-ins •  WP-Sentinel •  WordPress Sentinel (they are different!) Permissions Version Control - CVS, SVN, Git Backups!

5. Version Control System Set Apache to ignore .svn .git .cvs, etc Ignore files •  •  wp-conﬁg.php •  wp-content/uploads/ wp-local-config.php capistrano for deploy Develop/test on local or Dev machine

6. Scaling Single server •  NGINX + phpFCGI ? •  Varnish + apache + mod_php •  PHP-APC •  WP-Supercache/W3-total-cache •  Batcache / Memcached •  Enable the WordPress Object Cache define(ENABLE_CACHE, true); Watch for PHP-CGI/FCGI memory usage!

7. Take Media Offsite Videos - Youtube,Vimo Files - CDN, Flickr, DropBox, S3 Comments - IntenseDebate, Discus These help save disk & IO, resources

8. The Cloud? Cost Space Redundancy Control - or lack of it Openstack Cloudmin Control Panels? What Control Panels!

9. Scaling Multiple Same as Single .. plus more DNS Round Robin ? Heartbeat IP Failover ? Separate DB server w/ Replication ? File replication ? Controlling multiple servers ? Multiple Layouts - Planning is key!

10.

11.

12. DB Replication Database: •  Mysql Master/Master replication •  Mysql Master/Slave •  Separate DB server(s) •  HyperDB Plugin

13. Replication of Files •  Unisen •  rsync •  bitpocket •  DRBD •  Rsync •  Gluster

14. Controlling servers CFEngine Puppet ClusterSSH #!/bin/bash HOSTS="machine1 machine2 machine3 machine4"; if [ $1 ];then for i in $HOSTS; do ssh $i "$@"; done fi

15. Have a Plan, test it 10 Plan 20 Test 30 Adapt 40 Goto 20 Implement Don't wait until you have a problem to test it! Monitoring - NewRelic, Nagios, etc Failover Plans, like Heartbeat, DNS, etc

16. Things to remember Backup! Backup! Backup! Multiple Sites for redundancy Documentation in case developer/admin disappears

17. Questions? Questions?

18. http://www.freesoftwaremagazine.com/articles/easy_file_sync_bitpocket

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