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+# SOLR
+
+## Installation SOLR
+
++ `cd /opt/`
++ Download solr source code:\
+`sudo wget https://www-eu.apache.org/dist/lucene/solr/7.7.3/solr-7.7.3.tgz`
++ extract compressed source code:
+`sudo tar xzf solr-7.7.3.tgz solr-7.7.3/bin/install_solr_service.sh --strip-components=2`
++ run install script:\
+`sudo bash ./install_solr_service.sh solr-7.7.3.tgz`
+
+### Response
+
+id: ‘solr’: no such user\
+Creating new user: solr\
+Adding system user 'solr' (UID 123) ...\
+Adding new group 'solr' (GID 130) ...\
+Adding new user 'solr' (UID 123) with group 'solr' ...\
+Creating home directory '/var/solr' ...
+
+Extracting solr-7.7.3.tgz to /opt\
+Installing symlink /opt/solr -> /opt/solr-7.7.3 ...\
+Installing /etc/init.d/solr script ...\
+Installing /etc/default/solr.in.sh ...
+
+Service solr installed.\
+Customize Solr startup configuration in /etc/default/solr.in.sh
+
+check if solr service is running:\
+`sudo service solr status`\
+or via Solr Admin Panel:\
+<http://localhost:8983/solr/#/>
+
+## Configuration SOLR
+
+```bash
+sudo mkdir -p /var/solr/data/tethys_data/conf
+sudo mkdir -p /var/solr/data/tethys_data/data
+```
+
+**Configure Stopwords for your solr index**\
+Solr has the ability to read in a list of stop words, or words that should be ignored during indexing, so that those words do not clutter your index and are removed from influencing result relevancy. Add a list of common stop words to your stopwords.txt file.\
+`sudo nano /var/solr/data/tethys_data/conf/stopwords.txt`\
+So your file might look something like this:
+
+```ini
+#Stopwords for example.com
+a
+an
+and
+are
+as
+at
+be
+but
+by
+for
+if
+...
+```
+
+**Configure Synonyms for your solr index**\
+`sudo nano /var/solr/data/tethys_data/conf/synonyms.txt`
+
+```ini
+# Synonym mappings can be used for spelling correction too
+pixima => pixma
+```
+
+**Copy your model schema.xml and solrconfig into conf folder:**
+
+download the cofig files:
+
+```bash
+wget https://raw.githubusercontent.com/geolba/tethys-search/master/schema.xml
+wget https://raw.githubusercontent.com/geolba/tethys-search/master/solrconfig.xml
+```
+
+move them into the conf directory:
+
+```bash
+sudo mv /home/user/schema.xml /var/solr/data/tethys_data/conf/
+sudo mv /home/user/solrconfig.xml /var/solr/data/tethys_data/conf/
+```
+
+**Grant folder permissions for solr user**\
+`sudo chown -R solr:solr /var/solr/data/tethys_data/`
+
+**Create solr index (c = Collection name; d = folder name)**\
+`sudo su - solr -c "/opt/solr/bin/solr create -c tethys_data -d /var/solr/data/tethys_data/ -n /var/solr/data/tethys_data/conf/"`
+
+Output Will be:\
+Created new core 'tethys_data'
+
+## Manage Solr service
+
+```bash
+sudo service solr status
+sudo service solr start
+sudo service solr stop
+```
+
+## Uninstall SOLR
+
+delete your solr index:\
+`sudo su - solr -c "/opt/solr/bin/solr delete -c tethys_data"`
+
+```bash
+sudo service solr stop
+sudo rm -r /var/solr
+sudo rm -r /opt/solr-7.7.3
+sudo rm -r /opt/solr
+sudo rm -r /opt/solr-7.7.3.tgz
+sudo rm /opt/install_solr_service.sh
+sudo rm /etc/init.d/solr
+sudo rm /etc/default/solr.in.sh
+sudo deluser --remove-home solr
+sudo deluser --group solr
+```