| Version 58 (modified by chris, 6 years ago) (diff) |
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Table of Contents
quince.transitionnetwork.org / quince.webarch.net
This is the live server for www.transitionnetwork.org, wiki.transitionnetwork.org and static.transitionnetwork.org, a list of these sites is available on the server at quince.transitionnetwork.org.
This is a debian Xen virtual server with 1GB ram, 32GB HDD, single partition, 4 processors and one IP address, 81.95.52.88.
Munin starts for the server are available on the webarchitects monitoring server and on the transition network development server.
The notes about the old live server are here: LiveServer and the move to quince.transitionnetwork.org was done via ticket:147.
For admin related issues contact chris@….
TODO
- Optimise and monitor also what php accelerator should we use? Filecache for the moment because of problems encountered with both memcache and apc. Tweak MySQL defaults?
- Install http://awstats.sf.net/ for generating nice usage graphs from the apache logs and exim logs, see ticket:160
- After testing on the dev server, install Varnish, see ticket:161
apache
The server is running the default debian apache2:
/usr/sbin/apache2 -v
Server version: Apache/2.2.9 (Debian)
Server built: Apr 20 2010 15:40:17
/usr/sbin/apache2 -l
Compiled in modules:
core.c
mod_log_config.c
mod_logio.c
prefork.c
http_core.c
mod_so.c
The main configuration file is /etc/apache2/apache2.conf and the virtual hosts are sym linked from /etc/apache2/sites-enabled
After making any changes to the Apache configuration best do a configtest first to make sure the configuration is OK:
sudo /usr/sbin/apache2ctl configtest
And then to restart the apache server:
sudo /usr/sbin/apache2ctl restart
The HTTPS VirtualHosts have the following directives:
SSLEngine on SSLCipherSuite HIGH SSLProtocol all -SSLv2 SSLCertificateFile /etc/ssl/transitionnetwork.org/transitionnetwork.org.pem SSLCertificateChainFile /etc/ssl/transitionnetwork.org/gandi.pem
The transitionnetwork.org.pem file contains both the certificate and the key (these are the files from gandi.net):
cat transitionnetwork.org.crt > transitionnetwork.org.pem cat transitionnetwork.org.key >> transitionnetwork.org.pem
And the gandi.pem contains the cert and the chain of root certificates:
wget http://crt.gandi.net/GandiStandardSSLCA.crt wget http://crt.usertrust.com/UTNAddTrustServer_CA.crt wget http://crt.usertrust.com/AddTrustExternalCARoot.crt openssl x509 -inform DER -in GandiStandardSSLCA.crt -out GandiStandardSSLCA.pem openssl x509 -inform DER -in AddTrustExternalCARoot.crt -out AddTrustExternalCARoot.pem openssl x509 -inform DER -in UTNAddTrustServer_CA.crt -out UTNAddTrustServer_CA.pem cat transitionnetwork.org.crt > gandi.pem cat GandiStandardSSLCA.pem >> gandi.pem cat AddTrustExternalCARoot.pem >> gandi.pem cat UTNAddTrustServer_CA.pem >> gandi.pem
The above was documented as a result of ticket:165, see also wiki:SecurityInfo.
apc
The php-apc package is installed and info about how it is preforming is at https://live.quince.webarch.net/info/apc.php it's protected using htauthentication, ask chris@… for the username / password if you need it.
The configuration is in /etc/php5/conf.d/apc.ini and the settings have been taken from here http://www.innovatingtomorrow.net/2008/01/17/improve-php-performance-apc
extension=apc.so apc.enabled = 1 apc.shm_size = 128 apc.include_once_override = 1 apc.mmap_file_mask = /tmp/apc.XXXXXX
The wiki:NewLiveServer#mediawiki site is set to use APC via this setting in /web/wiki.transitionnetwork.org/www/LocalSettings.php
$wgMainCacheType = CACHE_ACCEL;
Drupal can be set to use it via /web/transitionnetwork.org/www/sites/default/settings.php but it doesn't appear to improve performance over the filecache and also it generates lots of errors in the Drupal logs like this:
unlink(/tmp/cache_views_lock) [<a href='function.unlink'>function.unlink</a>]: No such file or directory in /web/transitionnetwork.org/www/sites/all/modules/cacherouter/Cache.php on line 124.
See this thread for more on this problem: http://drupal.org/node/588820
mediawiki
The Mediawiki site at http://wiki.transitionnetwork.org/ is running on quince.webarch.net (see ticket:147 and ticket:148 for the move), it is also available at http://wiki.quince.webarch.net/
There is also a wiki:DevelopmentServer#Mediawiki version of this site at http://wiki.dev.transitionnetwork.org/ -- when upgrading Mediawiki please first test the upgrade on the dev server first.
Mediawiki is installed in /web/wiki.transitionnetwork.org/www and the apache VirtualHost configuration is in /etc/apache2/sites-available/wiki.transitionnetwork.org.conf.
To upgrade the site to the latest version of Mediawiki, from http://www.mediawiki.org/wiki/Download you could follow the instructions from http://www.mediawiki.org/wiki/Upgrade or use the mediawiki-upgrade script which takes the latest version of Mediawiki as an argument on the command line and then does everything for you:
kiwi:~# mediawiki-upgrade 1.16.0
The main configuration file for Mediawiki is /web/wiki.transitionnetwork.org/www/LocalSettings.php and this are the things that have been changed from their default values:
$wgScript = "/index.php"; $wgRedirectScript = "/redirect.php"; $wgArticlePath = "/$1"; $wgLogo = "/images/wiki.png"; $wgEmergencyContact = "wiki@transitionnetwork.org"; $wgPasswordSender = "wiki@transitionnetwork.org"; $wgRightsPage = "Copyright"; # Set to the title of a wiki page that describes your license/copyright $wgRightsUrl = "http://creativecommons.org/licenses/by-sa/2.0/uk/"; $wgRightsText = "Creative Commons Attribution-Share Alike 2.0 UK: England & Wales"; $wgRightsIcon = "/images/cc-by-sa.png";
cron
The cron job for the http://www.transitionnetwork.org/ site is set up for user chris and it contains:
# m h dom mon dow command */30 * * * * /usr/sbin/ab -n 1 http://www.transitionnetwork.org/cron.php >/dev/null 2>&1 * */1 * * * /usr/sbin/ab -n 1 http://workspaces.transitionnetwork.org/cron.php >/dev/null 2>&1
ab is apachebench.
backup2kiwi
To backup the Mysql database and the files for the web sites to the wiki:DevelopmentServer run the /usr/local/bin/backup2kiwi script, it puts the files in /home/live/quince on kiwi.webarch.net and these files are used by the scripts on kiwi to update the Drupal and Mediwiki sites with the latest data from the live sites.
A copy of this script is attached to this page: attachment:backup2kiwi
mysql-backup
A MySQL Backup script from http://worldcommunitypress.com/opensource/mysql-backup is installed in /usr/local/bin and it's set to create backups in /var/backups/mysql/
It needed the libmime-lite-perl debian package to be installed.
To run it:
/usr/local/bin/mysql-backup
These lines have been changed from the original at http://worldcommunitypress.com/assets/files/opensource/utilities/mysql_backup.txt :
$admin_email_to = 'chris@webarchitects.co.uk'; $admin_email_from = 'root@quince.webarch.net'; $cnf_file = '/root/.my.cnf'; $site_name = 'quince.webarch.net'; $mysql_backup_dir = '/var/backups/mysql';
backupninja
Backupninja has been installed and set up -- it's set to backup files to another server in the same rack and then this backups up the data to a server in another colo. The main configuration file is /etc/backupninja.conf and the files containing the list of things to be backed up are in /etc/backup.d/. 60 days worth of backups are saved. It is set to backup MySQL and the following directories:
include = /var/spool/cron/crontabs include = /var/backups include = /etc include = /root include = /home include = /usr/local/*bin include = /var/lib/dpkg/status* include = /web exclude = /home/*/.gnupg exclude = /home/*/.local/share/Trash exclude = /home/*/.Trash exclude = /home/*/.thumbnails exclude = /home/*/.beagle exclude = /home/*/.aMule exclude = /home/*/gtk-gnutella-downloads
php
See https://quince.transitionnetwork.org/info/ for the php info, the php.ini file is /etc/php5/apache2/php.ini
PECL Uploadprogress was installed as suggested here: http://www.joergfelser.at/content/howto-install-pecl-uploadprogress-debian-50-lenny
aptitude install php5-dev pecl install uploadprogress
And this was added to the php.ini file:
extension=uploadprogress.so
The, default php.ini files which had these changes:
expose_php = Off memory_limit = 256M extension=uploadprogress.so
Was moved to php.ini.dist.tweaked and then /usr/share/doc/php5-common/examples/php.ini-recommended was copied to /etc/php5/apache2/php.ini and a new /etc/php5/apache2/conf.d/uploadprogress.ini file was created with this in it:
extension=uploadprogress.so
And /etc/php5/apache2/php.ini was edited and these things were changed:
expose_php = Off memory_limit = 256M ; Maximum amount of memory a script may consume (128MB) error_log = syslog post_max_size = 12M upload_max_filesize = 12M display_errors = On default_charset = "utf-8"
phpmyadmin
This is available here: https://quince.transitionnetwork.org/phpmyadmin/ it's protected using htauthentication because there are a lot of attacks launched against phpmyadmin, ask chris@… for the username / password if you need it.
memcache
The memcache configuration file is /etc/memcached.conf the settings which have been changed from the default are:
# Start with a cap of 64 megs of memory. It's reasonable, and the daemon default # Note that the daemon will grow to this size, but does not start out holding this much # memory -m 128
The use of memcache by Drupal is configured in /web/transitionnetwork.org/www/sites/default/settings.php:
$conf['cache_inc'] = './sites/all/modules/cacherouter/cacherouter.inc';
$conf['cacherouter'] = array(
'default' => array(
'engine' => 'memcache',
'server' => array('127.0.0.1:11211'),
'shared' => TRUE,
),
);
It's not clear if there is any gain from using memcache with one server, see this thread: http://groups.drupal.org/node/73513
munin
In addition to the plugins available by default these were installed:
ftp
The server has vsftpd running for updating the static.transitionnetwork.org site, email mailto:chris@… if you need the username and password for the account to upload content.
vsftpd is configured via the /etc/vsftpd.conf file.
Attachments
- backup2kiwi (1.3 KB) - added by chris 6 years ago.
