Lone Star PHP 2013 - Sysadmin Skills for PHP Developers
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Declare Independence from your IT department: SysAdmin skills for PHP developers
Pablo Godel @pgodel - June 29th, 2013Lone Star PHP Conference
http://joind.in/8696
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- Why SysAdmin Skills- Introduction to LAMP- Hosting options- Linux distributions- Installing PHP options- Deploying PHP- Various production tips- Monitoring- Backups
Agenda
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Who Am I?
⁃ Born in Argentina, living in the US since 1999⁃ PHP & Symfony developer
⁃ Founder of the original PHP mailing list in spanish ⁃ Parrilla Lover
⁃ Co-founder of ServerGrove
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⁃ Founded ServerGrove Networks in 2005
⁃ Provider of web hosting specialized in PHP, Symfony, ZendFramework, MongoDB and others
⁃ Servers in USA and Europe!
ServerGrove!
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Very active open source supporter through codecontributions and usergroups/conference sponsoring
Community is our teacher
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Sysadmin Skills
Who needs them?
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Text
IT is busy / Different PrioritiesSaturday, June 29, 13
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!Rocket ScienceSaturday, June 29, 13
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Lack of controlSaturday, June 29, 13
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Less downtimeSaturday, June 29, 13
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Better PerformanceSaturday, June 29, 13
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What do you prefer?Saturday, June 29, 13
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Or this?Saturday, June 29, 13
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An example...
I s. I ’ s L. E Cs , .
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LAMPWhat is
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LAMPSaturday, June 29, 13
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LAMPSaturday, June 29, 13
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LAMPSaturday, June 29, 13
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LAMP Scott Beale
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LNMPSaturday, June 29, 13
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LNMPSaturday, June 29, 13
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LNPPSaturday, June 29, 13
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LANMMPPSaturday, June 29, 13
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LANMMPPWhy?
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Why LANMMPP
Proven
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Stable
Why LANMMPP
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Secure
Why LANMMPP
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Why LANMMPP
Free
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Free*
Why LANMMPP
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Inexpensive
Why LANMMPP
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Easily Available
Why LANMMPP
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Hosting Options
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Hosting OptionsShared Hosting
- Inexpensive- Widely available- Easy to use- No maintenance- No updates- Instant provisioning- DNS/Email services
- Shared resources- No/Limited Shell- Many restrictions- No control- Fixed versions - Multitude of CPs
+ -
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Hosting OptionsDedicated Servers
- Full control- No sharing- Best performance- Software / Hardware to specs
- Hard to plan- Software updates- SysAdmin skills- Expensive to start- Parts replacements- Control Panel licenses
+ -
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Hosting OptionsVirtual Servers / VPS
- Shared resources- Software updates- SysAdmin skills- Limited/No CP- Lack of email
-
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Hosting OptionsVirtual Servers / VPS
- Inexpensive- Widely available- Choice of OS- Root access- Full shell- Fast provisioning- Custom software
- Custom configurations- Snapshots- Multiple Envs
+ +
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Hosting OptionsCloud Hosting
Depends on implementation
+ -
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Hosting OptionsCloud Hosting
Some are a shared hosting with a fancy new name
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Hosting OptionsCloud Hosting
Some are a shared hosting with a fancy new nameOthers let you start small and scale easily
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Hosting OptionsCloud Hosting
Some are a shared hosting with a fancy new nameOthers let you start small and scale easilyGets really expensive at scale
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Hosting OptionsCloud Hosting
Most suffer from some of the shared hosting problems:- vendor lock-in- lack of control- high learning curve- limited environment
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Hosting Options
Which one to choose?
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Hosting OptionsWhich one to choose?
I T D E P E N D S
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Linux Distributions
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DistributionsRedHat based
- Fedora- RedHat Enterprise Linux (RHEL)- CentOS- Scientific Linux
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DistributionsDebian based
- Debian- Ubuntu
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DistributionsOthers
- Gentoo- Slackware- OpenSuse- Archlinux- any many many more!
http://distrowatch.com/http://en.wikipedia.org/wiki/Linux_distribution
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DistributionsKey differences- Configuration files- Package Manager- Managing Services- Software versions- Updates
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DistributionsKey differences
- Configuration files
CentOS
Ubuntu
/etc/sysconfig/network-scripts/ifcfg-eth0
/etc/network/interfaces
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DistributionsKey differences
- Package Manager
CentOS
Ubuntu
yum install php-cli
apt-get install php5
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DistributionsKey differences
- Package Manager
CentOS
Ubuntu
yum search php-cli
apt-cache search php
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DistributionsKey differences
- Managing Services
CentOS
Ubuntu
service restart httpdchkconfig --list httpdchkconfig httpd on
service restart apache2sudo update-rc.d apache2 enable
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DistributionsKey differences
- Software versions
CentOS
Ubuntu
httpd-2.2.3
apache-2.2.17
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DistributionsKey differences
- Updates
CentOS 5.x
Ubuntu 11
PHP 5.1.6
PHP 5.3.5
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DistributionsKey similarities
- Based on Linux Kernel
- Screwed up or ancient PHP- Lack of PHP extensions
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DistributionsWhich one to choose?
I T D E P E N D S
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DistributionsWhich one to choose?
- Best feeling- Previous experience- Workplace selection- Coworker / friend knowledge
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First Experience
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First Experience
- Run Linux natively- Mac OSX- Virtual Machine: - VirtualBox - Parallels - VMware- VPS
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First Experience#!/bin/bash
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First Experience#!/bin/bash
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First Experience#!/bin/bash
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First Experience#!/bin/bash
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First Experience#!/bin/bash
Recommended Books:- Learning the bash Shell- bash Cookbook
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First Experience#!/bin/bash
Most Common Commands:
$ ls -l /path/$ cd /path$ pwd$ cat /etc/passwd$ less /etc/resolv.conf$ tail -f /var/log/*$ last$ lastb$ vi /etc/hosts
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First Experience#!/bin/bash
User`s config files:
~/.bash_history~/.bash_logout~/.bash_profile PATH=$PATH:$HOME/bin export PATH
~/.bashrc alias rm='rm -i' alias cp='cp -i' alias mv='mv -i'
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First Experience#!/bin/bash
Most common directories:
/etc /tmp/var/log/var/run/root/home/usr/local/opt
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Installing Apache/PHP
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Installing Apache/PHP# CentOS$ yum install httpd php-cli mod_php
# Ubuntu$ apt-get install apache2 libapache2-mod-php5
Mac OSX- MAMP- Native Apache + Liip PHP installation- Zend Server CE
Windows- WAMP- IIS + PHP
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Installing PHPCentOS
Third Party Repositories- Remi RPMhttp://blog.famillecollet.com/- Webtatichttp://www.webtatic.com/- ServerGrove: PHP 5.3.x / 5.4.x / 5.5.x (always latest)http://repos.servergrove.com
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Installing PHPCentOS
Third Party Repositories
cd /etc/yum.repos.d/wget http://repos.servergrove.com/servergrove-centos-5/servergrove-centos-5.repoyum install php53 # or php54
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Installing PHPUbuntu
Third Party Repositories
- Dotdeb:http://www.dotdeb.org/- ServerGrove: (always latest)http://repos.servergrove.com
PHP 5.3.x / 5.4.x / 5.5.x
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Installing PHPUbuntu
Third Party Repositories
echo “deb http://repos.servergrove.com/servergrove-ubuntu-precise precise main” >> /etc/apt/sources.list.d/servergrove.listapt-get install php53 # or php54
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Installing PHPFrom Source
wget http://us2.php.net/get/php-5.4.12.tar.bz2/from/www.php.net/mirrortar jxvf php-5.4.12.tar.bz2cd php-5.4.12./configure make && make install
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Installing PHPRecompiling
php -i |grep configure./configure '--with-apxs2=/usr/sbin/apxs' '--prefix=/usr/local/php53' '--with-config-file-scan-dir=/etc/php53/conf.d' '--enable-bcmath' '--enable-ctype' '--enable-exif' '--enable-mbstring' '--enable-ftp' '--enable-intl' '--enable-sockets' '--enable-sysvmsg' '--enable-pcntl' '--with-bz2' '--with-curl' '--with-gettext' '--with-gd' '--enable-gd-native-ttf' '--enable-exif' '--with-freetype-dir=/usr' '--with-jpeg-dir=/usr' '--with-t1lib=/usr' '--with-mcrypt' '--with-openssl' '--with-kerberos' '--with-iconv' '--with-xsl' '--with-xmlrpc' '--with-zlib' '--with-mysql=mysqlnd' '--with-mysqli=mysqlnd' '--with-pdo-mysql=mysqlnd'make && make install
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Installing PHPCompiling for Apache
./configure '--with-apxs2=/usr/sbin/apxs' make && make install
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Installing PHPCompiling for Nginx / PHP-FPM
./configure '--enable-fpm' make && make install
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Installing PHPCompiling extension
./configure --with-curl --enable-ftpmake && make install
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Installing PHPCompiling extension
(dynamic)
cd ext/curlphpize./configure make && make installecho “extension=curl.so” >> php.ini
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Installing PHPCompiling extension
http://pecl.php.net/
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Installing PHPCompiling extension
(PECL)pecl install apc# orpecl download apctar zxvf APC-3.1.13.tgzcd APC-3.13phpize./configure make && make installecho “extension=apc.so” >> php.ini
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Automate!
- Chef- Puppet- ...
Installing PHP
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Installing PHPConfiguration
/etc/php/php.ini/etc/php5/cli/php.ini
/usr/local/lib/php.ini
Default location
Other common locations
/etc/php5/apache2/php.ini
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Installing PHPConfiguration
php -i | grep php.iniConfiguration File (php.ini) Path => /usr/local/php5/libLoaded Configuration File => /usr/local/php5-20110426-093151/lib/php.iniScan this dir for additional .ini files => /usr/local/php5/php.dAdditional .ini files parsed => /usr/local/php5/php.d/10-extension_dir.ini,
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Installing PHPConfiguration
php -i | grep mongo/usr/local/php5/php.d/50-extension-mongo.ini,mongomongo.allow_empty_keys => 0 => 0mongo.allow_persistent => 1 => 1mongo.auto_reconnect => 1 => 1mongo.chunk_size => 262144 => 262144mongo.cmd => $ => $mongo.default_host => localhost => localhostmongo.default_port => 27017 => 27017
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Installing PHPConfiguration
[PHP Modules]apcbcmathbz2Corectypecurldatedomereg
php -m
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Installing PHPConfiguration
php.iniextension_dir=/usr/lib/php/extensions/no-debug-non-zts-20090626
extension=apc.soextension=mongo.so
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Installing PHPConfiguration
php.ini
php -i | grep extension_dirextension_dir => /usr/local/php5/lib/php/extensions/no-debug-non-zts-20090626
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Installing PHPConfiguration
php.ini
date.timezone=UTCdisplay_errors = offlog_errors = onerror_log = /var/log/php.log
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Installing PHPConfiguration
Securitymemory_limit = 128Mmax_execution_time = 30display_errors = offexpose_php = offmail.log = /var/log/phpmails.logdisable_functions = execallow_url_fopen = off
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Installing PHPConfiguration
File uploads on .htaccessphp_value memory_limit 128Mphp_value max_file_uploads 20php_value max_input_time -1php_value post_max_size 8Mphp_value upload_max_filesize 2Mphp_value max_execution_time 0
AllowOverride=All in Apache!Saturday, June 29, 13
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Installing PHPConfiguration
Include .htaccess
<Directory /path/to/document/root> Include /path/to/.htaccess</Directory>
AllowOverride=None in Apache!Saturday, June 29, 13
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Installing PHPConfiguration
Apache
php_value date.timezone UTCphp_flag display_errors 1php_value memory_limit 128Mphp_value max_execution_time 0
Don’t forget to restart ApacheSaturday, June 29, 13
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Installing PHPWeb Server User
- apache- nobody- www-data- ftp / ssh user (sometimes)
Possible users
Permissions issues with clear cache and uploads, Anyone?
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Installing PHPWeb Server User
Fix:
Permissions issues with clear cache and uploads, Anyone?
rm -rf app/cache/*rm -rf app/logs/*
sudo chmod +a "www-data allow delete,write,append,file_inherit,directory_inherit" app/cache app/logssudo chmod +a "`whoami` allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs
http://symfony.com/doc/current/book/installation.html
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Deploying PHP
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Deploying PHPBefore going live
Make sure ntpd is installed and running to ensure accurate server time
yum install ntpchkconfig ntpd onntpdate pool.ntp.org
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Deploying PHPBefore going live
- Disable PHP in specific directories
<Location /uploads> php_admin_flag engine off</Location>
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Deploying PHPBefore going live
- Limit access by IP
<Location /admin> Order Deny,Allow Deny from all Allow from 1.2.3.4</Location>
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Deploying PHPBefore going live
- Add HTTP Authentication
<Location /admin> Require valid-user AuthType Basic AuthName "SG" AuthUserFile /path/users</Location>
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Deploying PHPBefore going live
- Quiet down Apache
ServerTokens Prod
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Deploying PHPBefore going live
RewriteEngine On
RewriteRule ^\.htaccess$ - [F]
RewriteCond %{REQUEST_FILENAME} -fRewriteRule ^.*$ - [NC,L]
RewriteCond %{REQUEST_URI} !^/web/.*$RewriteRule ^(.*)$ /web/$1
Move document root with .htaccess
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Deploying PHPBefore going live
- Case senstive filesystem
IPCheck_Form_Index_Login != IpCheck_Form_Index_Login
/path/to/file/IpCheck_Form_Index_Login.php<?php class IPCheck_Form_Index_Login {...
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Deploying PHP- server-side vi- plain old FTP- SFTP- scp- rsync + ssh- git- tar / gzip- rpm / deb packages- capistrano / capifony
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Deploying PHP- server-side vi- plain old FTP- SFTP- scp- rsync + ssh- git- tar / gzip- rpm / deb packages- capistrano / capifony
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Deploying PHPEffing Package Management
https://github.com/jordansissel/fpm
Build packages for multiple platforms (deb, rpm, etc) with great ease and sanity.
fpm -s dir -t rpm -n "sfapp" -v 1.0 /var/www/sfapp
fpm -s dir -t deb -a all -n sfapp -v 1.0 /etc/apache2/conf.d/my.conf /var/www/sfapp
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Deploying PHPCapistrano / Capifony
- multiple servers- multiple environments- setup shared folders (vendors, cache, logs, etc)- copy files- update vendors- multi versions- rollback- restart apache
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Deploying PHPSetting up SSH
$ ssh-keygen -t dsa ~/.ssh/id_dsa.pub
$ ssh-copy-id user@remote-host ~/.ssh/authorized_keys ~/.ssh/authorized_keys2
$ ssh-add
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Deploying PHPSetting up SSH
~/.ssh/config
Host * ForwardAgent yes Port 22123
Host gh HostName github.com Port 22 PreferredAuthentications publickey IdentityFile ~/.ssh/me_rsa
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Deploying PHPSetting up SSH
/etc/ssh/sshd_config
Port 22 Port 22123 PermitRootLogin no PasswordAuthentication no
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Deploying PHP Automate!
https://github.com/pgodel/m-sunshinephp/blob/master/web/deploy.php
<?php
exec('/usr/bin/env -i HOME=/var/www/vhosts/m.sunshinephp.com/m-sunshine git pull origin master');
http://m.sunshinephp.com/deploy.php
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DNS Tips
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DNS Tips The Power of the hosts file
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/etc/hosts
10.0.1.1 www.lottery.com
DNS Tips The Power of the hosts file
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/etc/hosts
10.0.1.1 example1.com example2.com
DNS Tips The Power of the hosts file
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DNS TipsVirtual Document Root
UseCanonicalName Off
VirtualDocumentRoot /var/www/vhosts/%0/web
<Location /var/www/vhosts> AllowOverride All Options +FollowSymLinks</Location>
example.com => /var/www/vhosts/example.com/webexample2.com => /var/www/vhosts/example2.com/web
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DNS TipsNameservers/Expiration
whois servergrove.com...Name Servers: ns1.servergrove.com ns2.servergrove.com ns3.servergrove.com
Creation date: 19 May 2005 23:34:36Expiration date: 19 May 2014 23:34:00
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DNS TipsDNS records
dig -t A google.com;; ANSWER SECTION:google.com. 184 IN A 74.125.230.227google.com. 184 IN A 74.125.230.228google.com. 184 IN A 74.125.230.229google.com. 184 IN A 74.125.230.230google.com. 184 IN A 74.125.230.231google.com. 184 IN A 74.125.230.232google.com. 184 IN A 74.125.230.233google.com. 184 IN A 74.125.230.238google.com. 184 IN A 74.125.230.224google.com. 184 IN A 74.125.230.225google.com. 184 IN A 74.125.230.226
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DNS TipsDNS records
dig -t A servergrove.eu @ns1.servergrove.com;; ANSWER SECTION:servergrove.eu. 3600 IN A 149.5.47.100
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DNS Tips DNS Delegationhttp://www.simpledns.com/lookup-dg.aspx
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DNS Tipstraceroute
traceroute google.com
traceroute to google.com (173.194.37.33), 30 hops max, 40 byte packets 1 2.69-195-222.static.servergrove.com (69.195.222.2) 0.360 ms 0.365 ms 0.432 ms 2 t0-1-0-5.br2.mia.terremark.net (66.165.161.45) 1.558 ms 1.546 ms 1.532 ms 3 core1-1-0-0.mia.net.google.com (198.32.124.133) 0.238 ms 0.224 ms 0.230 ms 4 209.85.253.74 (209.85.253.74) 0.266 ms 0.283 ms 0.312 ms 5 209.85.254.252 (209.85.254.252) 12.764 ms 12.757 ms 12.749 ms 6 64.233.175.92 (64.233.175.92) 14.177 ms 14.257 ms 14.359 ms 7 atl14s07-in-f1.1e100.net (173.194.37.33) 13.653 ms 13.606 ms 13.618 ms
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DNS Tipsmtr
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Monitoring
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Monitoring
<Location /server-status> SetHandler server-status Order deny,allow Deny from all Allow from .your_domain.com</Location>
ExtendedStatus On
Apache Requests
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MonitoringApache Requests
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Monitoring
- Cacti- Ganglia- Zabbix- collectd- statsd / StatsDBundle- graphite
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Monitoringstatsd / StatsDBundle / Graphite
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MonitoringCPU / Memory / IO
top
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MonitoringIO
iotop
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MonitoringNetwork
iptraf
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MonitoringHandling logs
- Centralize logs with syslog
error_log = syslog
- Monolog supports syslog- logstash, logster, loggly, logio
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MonitoringHandling logs
$ grep POST /var/log/apache2/access_log
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Speeding up
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Speeding up
- nginx/php-fpm- APC- ZendOptimizer+ (Included in PHP 5.5)- Memcache- nginx reverse proxy cache- Varnish
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Backups
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Backups
- rsync- rdiff-backup- Unison- Bacula- Amanda
Saturday, June 29, 13
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Backups
Don’t forget to backup your DB!
http://blog.servergrove.com/2012/01/24/backup-your-mysql-database-using-mysqldump/
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Reading List
- Automating UNIX and Linux Administration- Running Linux - Learning the bash Shell: Unix Shell Programming
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The End Questions?
Sysadmin skills for PHP developersSaturday, June 29, 13
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http://joind.in/8696 Thank you!
Sysadmin skills for PHP developers
Pablo Godel @pgodel Saturday, June 29, 13