Drupal Deployment Troubles and Problems

Drupal DTPDeployment

Troubles and Problems

6.x

@landike (Andrii Lundiak)

Deployment steps

• ftp, ssh• php access• cron• backups• database

Hosting

Steps levelDeployment Steps

HostingInstallConfigure

What we have today to discuss1. Hosting environment worries2. First install steps3. Magic php.ini4. This very helpful .htaccess file5. We all like settings.php6. Strange unbelievable error messages

or Let find more Troubles and more Problems and Ways how to

fix them.

Useful MySQL stuff mysqlimport --password=mypass --user=myuser dbname dbname.sql; mysql -h DBSERVER -p -u username dbname < dbname.sql mysqldump -u username -p dbname > dbname.sql mysql -h DBSERVER -p -u username dbname > dbname.sql Use mysql.cnf file to run easier#---------------[client]user = myuserpassword = mypasshost = DBSERVER[mysql]database = dbname#-------------

mysql < dbname.sql

Log FilesIt's good to know what we have on hosting server

and especially where Log files are.

To access the files directly on the server, on some Unix shells, you can type the following command:

tail -f /var/log/apache2/error.log

To check that you are looking at the right file, you may wish to type the following commands to find where the log files are.

grep 'ErrorLog' /etc/apache2/*grep 'ErrorLog' /etc/apache2/*/*

Error ReportingIf error reporting is turned off, you could be getting a fatal error but

not seeing it. On a production site, it is common to have error reporting turned off.

Take care to have in index.php:error_reporting(E_ALL);ini_set('display_errors', TRUE);ini_set('display_startup_errors', TRUE);

this will help in debug/test mode

Install and GoCreate Database … and enjoy easy

installation

If some php settings are not in properly state, install process will tell you (about register_globals, mbstring.http_output, safe_mode, etc.)

php.ini magicianHow to override php settings:

value of a configuration option in php.ini.htaccess directivesusing ini_set() in settings.phpor use control panel on your hosting serveror call to admin personor change hosting server

Another way to overrideIf you have access to php.ini it’s AWESOME,

and It’s great if you have your own php.ini near by www

On some hosting servers such kind of option is used to enable using local php.ini file:

ssuPHP_ConfigPath /hsphere/local/home/sitelocation

This setting must be located in .htaccess fileAnd php.ini file must exists in

/hsphere/local/home/sitelocation/php.ini

Allowed memory size …Fatal error: Allowed memory size of X bytes exhausted (tried to

allocate Y bytes)...

Increase PHP's memory limit, up to 16MB or 24M or 32MB or especially 96MB for a site with built-in image processing using ImageAPI GD

memory_limit = 16M in your php.ini file. orphp_value memory_limit 16M in your .htaccess fileorini_set('memory_limit', '16M'); in your settings.php file???

Execution time of 30s exceeded“Fatal error: Maximum execution time of 30 seconds exceeded in ….\

includes\database.mysql.inc on line XXX”

The default PHP timeout defined in php.ini is 30 seconds. This is too short for some activities like listing/enabling modules.max_execution_time 120; (php.ini)php_value max_execution_time 120 (.htaccess)ini_set(‘max_execution_time’, ‘120’)

(settings.php)

Set “max_execution_time “ = 3000 and Enjoy (is very useful in testing stage)

Dear friend - .htaccess.htaccess was not uploaded (Access Denied

message, Disabled Clean urls) RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]

“PHP: Error parsing …” - () was in .htaccess comments

http://example.com -> http://www.example.com # RewriteCond %{HTTP_HOST} ^example\.com$ [NC] # RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301]

http://www.example.com -> http://example.com # RewriteCond %{HTTP_HOST} ^www\.example\.com$ [NC] # RewriteRule ^(.*)$ http://example.com/$1 [L,R=301]

Lovely settings.php $cookie_domain = 'example.com';

Drupal automatically generates a unique session cookie name for each site, based on full domain name

This option is used in CKFinder configuring Do not miss it, going from dev-server to production-server

Take care about file permission and $db_url and $update_free_access

Don’t forget, if you have $db_prefix, you should use {table} in SQL query build

WSOD (White Screen Of Death)"Invisible" Errors or Blank Pages, how to

fix:

SELECT * FROM watchdog LIMIT 20;Easy manual quick-fixing

rename couple of modules step-by-stepDtools

bench_chart.module, wsod_emergency.php, wsod.moduleIncrease CPU limit on hosting server

With low level (3-5%) some heavy pages will be “blank”

Another silly mistakesWhitespace at the Begin and End of a PHP

File See more about <? and <?php in short_open_tag “php

configuration option” information God, bless IDEs, which remove trailing whitespace. Or you

should take care with your coding

“You are not authorized to access this page” browser multi tab access block settings changes admin/build/themes on slow hosting

To fix this issue: call drupal_flush_all_caches(); anywhere

Disabling ModulesVia the Module Administration Page in the UIAdminister > Site Building > Modules … Uncheck and Save

Via the DatabaseIf your WSOD is caused by a specific module and you cannot

access the module admin page, go to system table, set status to 0 and then clear the cache table

You should have cronThere are many ways to configure cron (curl, lynx, wget,

even GET), but …Here is real “drupal” way: Change file permission for scripts/drupal.sh (chmod a+x

scripts/drupal.sh) Use in crontab file (or in Hosting Control Panel) this command:/home/account/www/scripts/drupal.sh --root /home/account/www

http://default/cron.php

PS. Cron is used by many modules: Update, Event, Aggregator, Search, Notifications, Send, Image watermark, Watchdog and other which must run time-related tasks.

Suggestions Before DeploymentBe afraid free hosting with additional ads admin/build/[modules|menu] doesn’t run admin/build/themes run with errors JavaScript/AJAX/XMLHttpRequest errors

These actions would be great to do before/during/after deployment:

TRUNCATE TABLE watchdog;drupal_flush_all_caches(); or “Clear Cached

Data”"Rebuild Permissions" in Post Settings page“Re-Index site”

Think at first || rapid development

Masquarade moduleTransliterationDevel/Themer moduleDrush module“TEASER break” button in rich editor an

Node-SystemUse professional IDE

References Drupal Deployment Checklist (!!)

http://www.metaltoad.com/blog/drupal-deployment-checklist General information about cron with Drupal

http://drupal.org/getting-started/6/install/cron Advanced Cron Modules

http://groups.drupal.org/node/17072/edit +++ http://www.drupalcron.org/ Dtools module (WSOD tablet)

http://drupal.org/project/dtools/cvs-instructions Advanced PHP Error Handling via htaccess (!!!)

http://perishablepress.com/press/2008/01/14/advanced-php-error-handling-via-htaccess/ Stupid htaccess Tricks (!!!)

http://perishablepress.com/press/2006/01/10/stupid-htaccess-tricks/ Drupal Tweaks (helping with allocation of php memory size)

http://drupal.org/project/drupal_tweaks Drush - Drupal Shell utility

http://drupal.org/project/drush || http://groups.drupal.org/drush || http://drupal.org/node/477684

Automating Drupal Deployment with drush_make and Features (!!!) http://drupalcampaustin.org/sessions/automating-drupal-deployment-drushmake-and-features

Install with Drush (!!! – GREAT short list of command to install) http://knol.google.com/k/michael-chelen/how-to-install-drupal-using-drush/gxxp1ckx8nad/5#

That’s allSend me email. I’m here landike@gmail.com

Follow me in twitter @landike

Call me via Skype – lan_researcher

See my “media” updates on www.landike.mp

drupal user – LAN_DRUPAL