Voir :

• http://lucene.apache.org/solr/guide/7_5/solr-tutorial.html
• https://www.unixmen.com/install-apache-solr-ubuntu/
• http://deeplearning.lipingyang.org/2017/04/30/install-apache-solr-on-ubuntu-16-04/
• https://dzone.com/articles/how-to-install-apache-solr-on-ubuntu-1604
• Datafari

Solr utilise le langage Java et est exécuté par un conteneur de servlets1, comme Tomcat, jusqu'à la version 5.0 puis devient un standalone Java.

Solr Instance : Ir refers to Solr server running inside JVM Solr Core : In Solr, the term “core” is used to refer to a single index and confoguration files (such as solrconfig.xml, schema files etc!…) and transaction log associated with code. You can have one or more cores (indexes) running inside single Solr instance. Physically each core maps to a subdirectory in the Solr home directory

tar xvf solr-7.5.0.tgz
cd solr-7.5.0
 
# See solr-7.5.0/README.txt
bin/solr start -help

Deux modes :

• standalone (core)
• SolrCloud mode (collection)

# standalone (core)
bin/solr start
 
# SolrCloud mode (collection)
bin/solr start -cloud

http://localhost:8983/solr

Cloudtab http://localhost:8983/solr/#/~cloud

Creation d'un core

bin/solr create -c techproducts

bin/post -c techproducts example/exampledocs/books.csv

Requette

http://localhost:8983/solr/techproducts/select?q=*:*

bin/solr status

Les logs sont ici : ./server/logs/

Check / supervision Voir https://lucene.apache.org/solr/guide/7_5/ping.html

#curl http://localhost:8983/solr/techproducts/admin/ping
curl -i -H "Accept: application/json" 'http://localhost:8983/solr/techproducts/admin/ping

Stop

bin/solr stop -all

Clean

rm -rf server/solr/techproducts/

cd solr-7.5.0/server
mkdir plop
cd plop
mkdir conf
mkdir data
touch core.properties
touch conf/schema.xml
touch conf/solrconfig.xml

Voir https://github.com/sunspot/sunspot/wiki/Configure-Solr-on-Ubuntu,-the-quickest-way

apt-get install openjdk-6-jdk
apt-get install solr-tomcat

Vérif

ps -ef |grep java
curl http://localhost:8080/solr/admin/ping |egrep 'str name="status.*OK'

Pour les versions anciennes

java -jar start.jar

Avec la version 7.5 en faisant un ps -ef |grep java

java -server -Xms512m -Xmx512m -XX:NewRatio=3 -XX:SurvivorRatio=4 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=8 -XX:+UseConcMarkSweepGC -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 -XX:+CMSScavengeBeforeRemark -XX:PretenureSizeThreshold=64m -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=50 -XX:CMSMaxAbortablePrecleanTime=6000 -XX:+CMSParallelRemarkEnabled -XX:+ParallelRefProcEnabled -XX:-OmitStackTraceInFastThrow -verbose:gc -XX:+PrintHeapAtGC -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintTenuringDistribution -XX:+PrintGCApplicationStoppedTime -Xloggc:/tmp/plop/solr-7.5.0/server/logs/solr_gc.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=9 -XX:GCLogFileSize=20M -Dsolr.log.dir=/tmp/plop/solr-7.5.0/server/logs -Djetty.port=8983 -DSTOP.PORT=7983 -DSTOP.KEY=solrrocks -Duser.timezone=UTC -Djetty.home=/tmp/plop/solr-7.5.0/server -Dsolr.solr.home=/tmp/plop/solr-7.5.0/server/solr -Dsolr.data.home= -Dsolr.install.dir=/tmp/plop/solr-7.5.0 -Dsolr.default.confdir=/tmp/plop/solr-7.5.0/server/solr/configsets/_default/conf -Xss256k -Dsolr.jetty.https.port=8983 -Dsolr.log.muteconsole -XX:OnOutOfMemoryError=/tmp/plop/solr-7.5.0/bin/oom_solr.sh 8983 /tmp/plop/solr-7.5.0/server/logs -jar start.jar --module=http