GadElKareem

Archive for the ‘Solutions’ Category

• Add full previews to your twitter feed on WordPress using Ozh’ Tweet Archiver

  Thursday, May 17th, 2012

  Ozh’ Tweet Archiver is a WordPress plugin that can archive your tweets on your own blog; it simply creates a new post for each tweet. Additionally, it offers converting hashtags to WordPress tags, and several other features. Nevertheless, one feature, I thought might be interesting, is to process the links on tweets and show them as a Facebook feed. Recently, I modified the code and it worked very well on my blog: Gadelkareem Tweets.

  - All we need is to modify the “wp-content/plugins/ozh-tweet-archiver/inc/import.php” file as following: (more…)

• Limit requests per IP on Nginx using HttpLimitZoneModule and HttpLimitReqModule except whitelist

  Sunday, March 25th, 2012

  - Make sure to check Nginx, PHP posts for information on Nginx and PHP setup and configuration.

  Nginx offers two modules, HttpLimitReqModule and HttpLimitZoneModule, to limit simultaneous connections for the assigned session and the number of requests for a given session from one IP address. Basically these modules are built to protect the web server from possible DDos attacks; For example, this configuration limits remote clients to no more than 20 concurrently “open” connections per remote ip address:

  http{
      limit_zone limit_per_ip $binary_remote_addr 5m;
      limit_conn  limit_per_ip  20;

  (more…)

• Disqus problem with wordpress “unable to connect to the disqus api servers”

  Friday, March 16th, 2012

  I recently installed Disqus plugin for WordPress; however, I have been receiving this message “unable to connect to the disqus api servers.” By looking into the source code, it looks like curl is the problem! more specifically the _dsq_curl_urlopen() function, but I did not investigate this error further. As fortunately, we can easily switch to the alternative function _dsq_fsockopen_urlopen().
  (more…)

• Install Sphinx 2.0.4 on CentOS 6.2

  Monday, March 12th, 2012

  - Make sure to check CentOS, PHP-FPM, Nginx, memcached and MYSQL posts.

  - Get fresh RPM from sphinxsearch.com

  - Install Sphinx

  rpm -Uhv http://sphinxsearch.com/files/sphinx-2.0.4-1.rhel6.x86_64.rpm

  - Create sample MySQL database
  (more…)

• Watch log files on Linux server with Swatch 3.2.3

  Sunday, March 4th, 2012

  - Make sure to check CentOS, PHP-FPM, memcached and MYSQL posts.

  - get a fresh package from Swatch project

  wget "http://downloads.sourceforge.net/project/swatch/swatch/3.2.3/swatch-3.2.3.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fswatch%2F&ts=1330806322&use_mirror=garr"
  tar xfz swatch-3.2.3.tar.gz 
  cd swatch-3.2.3
  cpan -i Date::Format File::Tail
  cpan -i Date::Manip Date::Calc
  cpan -i Test::Inter Test::Pod Test::Pod::Coverage Module::Build
  cp /root/.cpan/sources/authors/id/S/SB/SBECK/Date-Manip-* .
  tar xfz Date-Manip-*.tar.gz
  cd Date-Manip-*
  perl Build.PL 
  ./Build install
  cd ..
  perl Makefile.PL
  make install

  - configure swatch
  (more…)

• Install Nginx 1.0.12 for PHP-FPM on CentOS 6.2

  Saturday, March 3rd, 2012

  - Make sure to check PHP-FPM, memcached and MYSQL posts.
  - get the latest package from wiki.nginx.org

  mkdir nginx
  cd nginx
  wget http://nginx.org/download/nginx-1.0.12.tar.gz
  tar xfz nginx-1.0.12.tar.gz 
  cd nginx-1.0.12
   
  #Change server string
  vi src/http/ngx_http_header_filter_module.c
  #change
  static char ngx_http_server_string[] = "Server: example.com" CRLF;
  static char ngx_http_server_full_string[] = "Server: example.com" CRLF;
   
  #change
  vi src/http/ngx_http_special_response.c
  # replace '"<hr /><center>nginx</center>" CRLF' and '"<hr /><center>" NGINX_VER "</center>" CRLF'
  "<hr /><center>example.com</center>" CRLF
   
  #create tmp dirs
  mkdir /server/tmp /server/tmp/nginx /server/tmp/nginx/client /server/tmp/nginx/fcgi /server/tmp/nginx/proxy
  chmod -R 777 /server/tmp

  -install Nginx
  (more…)

• install memcached 1.4.13 on CentOS 6.2

  Wednesday, February 29th, 2012

  - Make sure to check PHP-FPM and MYSQL posts.

  - One of the dependencies of memcache is libevent, get latest version from libevent.org

  mkdir libevent
  cd libevent
  wget https://github.com/downloads/libevent/libevent/libevent-2.0.17-stable.tar.gz
  tar xfz libevent-2.0.17-stable.tar.gz
  cd libevent-2.0.17-stable

  - get latest version from memcached.org
  (more…)

• Install PHP 5.3.10 with PHP-FPM on CentOS 6.2 64-bit

  Wednesday, February 29th, 2012

  - Make sure to check Nginx, memcached and MYSQL posts.

  - remove old version

  #find installed packages
  rpm -qa | grep php
  #remove php packages
  yum remove php php-devel php-cli php-pear php-common php-pdophp-xml php-gd

  - download package from PHP.net

  mkdir php
  cd php
  wget http://www.php.net/get/php-5.3.10.tar.bz2/from/us.php.net/mirror
  tar jxf php-5.3.10.tar.bz2
  cd php-5.3.10
   
  #install PHP
  ./configure  \
  	--with-zlib --with-curl --with-curlwrappers --enable-ftp --with-mysql --with-jpeg-dir --with-png-dir --with-gd --enable-gd-native-ttf --with-freetype-dir \
  	--enable-zip --with-openssl --with-bz2 --enable-mbstring  \
  	--enable-inline-optimization --disable-debug \
  	--with-config-file-path=/etc \
  	--enable-fpm --with-fpm-user=www --with-fpm-group=www --with-libdir=lib64;
  make all install;
   
  #add php-fpm service
  cp  sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm
  chmod +x /etc/init.d/php-fpm
  chmod 666 /usr/local/var/run

  - Configure php-fpm
  (more…)

• install curl 7.24 on CentOS 6.2

  Monday, February 27th, 2012

  - Make sure to check PHP-FPM post.

  - install from source

  wget http://curl.haxx.se/download/curl-7.24.0.tar.bz2
  tar xfj curl-7.24.0.tar.bz2
  cd curl-7.24.0
  ./configure --prefix=/usr
  make
  make install
  #check version
  curl -V

• Install MySQL 5.5.21 64-bit RPM on CentOS 6.2 x86_64

  Monday, February 27th, 2012

  Check Installing CentOS 6.2 on VMware, Install PHP 5.3.10 with PHP-FPM on CentOS 6.2 64-bit, Install Nginx 1.0.12 for PHP-FPM on CentOS 6.2 and install memcached 1.4.13 on CentOS 6.2 posts.

  - Remove old version

  yum remove mysql mysql-devel mysql-server mysql-libs

  - Download the needed packages from http://dev.mysql.com/downloads/mysql/#downloads
  Download URL varies depending on download mirror

  mkdir mysql
  cd mysql
  #MySQL-client-5.5.21-1.linux2.6.x86_64.rpm 
  wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-client-5.5.21-1.linux2.6.x86_64.rpm/from/http://na.mirror.garr.it/mirrors/MySQL/
  #MySQL-shared-5.5.21-1.linux2.6.x86_64.rpm
  wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-shared-5.5.21-1.linux2.6.x86_64.rpm/from/http://it.mysql.contactlab.it/
  #MySQL-devel-5.5.21-1.linux2.6.x86_64.rpm
  wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-devel-5.5.21-1.linux2.6.x86_64.rpm/from/http://na.mirror.garr.it/mirrors/MySQL/
  #MySQL-server-5.5.21-1.linux2.6.x86_64.rpm
  wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-server-5.5.21-1.linux2.6.x86_64.rpm/from/http://it.mysql.contactlab.it/
  #MySQL-shared-compat-5.5.21-1.linux2.6.x86_64.rpm
  wget http://dev.mysql.com/get/Downloads/MySQL-5.5/MySQL-shared-compat-5.5.21-1.linux2.6.x86_64.rpm/from/http://mysql.mirrors.hoobly.com/
   
  #install
  rpm -Uvh *
  #create log dir
  mkdir /var/log/mysql
  chmod 777 /var/log/mysql
   
  #start MySQL
  /etc/init.d/mysql start
  #add root password
  /usr/bin/mysqladmin -u root password 'new-password'
  /usr/bin/mysqladmin -u root -h centos6.vmware.local password 'new-password'

  - configure mysql more info

  vi /etc/my.cnf

  (more…)