Solr Server setup

1. Solr Server setup
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Use below link as a reference
https://www.webfoobar.com/node/16
https://valuebound.com/resources/blog/installing-configuring-apache-solr-520-with-drupal-7-using-search-api-ubuntu-1404

1. If Java is not installed, check the available versions of Java and install it:
  yum list available java*
  yum install java-1.8.0-openjdk.x86_64
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2. Then verify if it is already installed:
  which java
  java -version

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3. Set the default Java version to the latest using below command.
 sudo alternatives --config java

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4. Solr require system user named "solr" and we will create one:
  adduser solr

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5. Download and setup Solr server:
  a) Goto directory
  b) download
  c) unzip the folder.
  d) Copy install_solr_service.sh into opt directory
  e) Remove folder
  f) unzip the folder using sh file.

  cd /opt
  sudo curl -O http://www-us.apache.org/dist/lucene/solr/5.5.0/solr-5.5.0.tgz
  tar zxvf solr-5.5.0.tgz
  sudo cp /opt/solr-5.5.0/bin/install_solr_service.sh .
  sudo rm -rf solr-5.5.0
  sudo ./install_solr_service.sh solr-5.5.0.tgz

 a) add user to auto start solr server.
  sudo chkconfig --add solr
  chkconfig | grep solr

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Solr succesfully installed

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configure solr for drupal

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1. Goto below directory
cd /opt/solr/server/solr

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2. Create new directory
  sudo mkdir -p rwjf/conf

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NOTE: Fix the apache solr issue default config files for solr 5.x

3. Copy these files into below directory and replace the files.
sudo cp solr-conf/5.x/* to /opt/solr/server/solr/rwjf/conf
Replace ISOLatin1Accent.txt from configset example folder.

Node:- We have created a folder on the root with name "solr-drupal" to copy this files into directory with resolve above issue.
sudo cp drupal-direcoty to /opt/solr/server/solr/rwjf/conf

Use below command
sudo cp -r /var/www/html/solr-drupal/conf/*  /opt/solr/server/solr/rwjf/conf
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4. Restart Solr server
 sudo /opt/solr/bin/solr restart
 Note:-If unable to start server then use this command:- kill -9 PID

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 5.Create Coreadmin for drupal
  sudo bin/solr create -c rwjf -d server/solr/rwjf

# Setup server/etc/jetty.xml for security
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<!-- here begins ip securing -->
<New class="org.eclipse.jetty.server.handler.IPAccessHandler">
<Call name="addWhite">
<!-- list of args with ip-addresses -->
<Arg>127.0.0.1</Arg>
</Call>
<Set name="handler">
<New id="Contexts" class="org.eclipse.jetty.server.handler.ContextHandlerCollection"/>
</Set>
</New>
<!-- end of securing -->

Solr configuration in settings file
1. Staging Server
$conf['search_api_solr_overrides'] = array(
  'default_solr' => array(
    'name' => t('Default Solr (Overridden)'),
    'options' => array(
      'host' => '127.0.0.1',
      'port' => 8983,
      'path' => '/solr/rwjf',
    ),
  ),
);

2. Development server
$conf['search_api_solr_overrides'] = array(
  'default_solr' => array(
    'name' => t('Default Solr (Overridden)'),
    'options' => array(
      'host' => '127.0.0.1',
      'port' => 8983,
      'path' => '/solr/drupal',
    ),
  ),
);

How to setup Varnish, Memcache and APC on server
https://gist.github.com/danpette/a4f9cd207f669f99b882
Solr start command
sudo /opt/solr/bin/solr restart
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2. Memcache Server setup

1. First install the memcache in the system
    yum install memcached

2. Added following line in my php.ini
    extension=memcache.so (if memcache extenstion installed)

3. started memcached:
    service memcached start

4. restarted apache
    service httpd restart

5. Install the php extension. There are two extestion available to enable
    sudo yum install php56-pecl-memcache(Recommended)
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3. APC setup on server.

For php version 5.6
1. install the pecl-apcu on the server using below command.
    sudo yum install -y php56-pecl-apc

2. Add the below line into the php.ini file to enable the extenstion.
   extension=apc.so

3. Restart apache2
   sudo service httpd restart