CentOs8に全文検索ツール「Apache Solr」をインストールする手順

sudo vi /etc/yum.repos.d/adoptopenjdk.repo

<編集>
[AdoptOpenJDK]
name=AdoptOpenJDK
baseurl=http://adoptopenjdk.jfrog.io/adoptopenjdk/rpm/centos/8/x86_64
enabled=1
gpgcheck=1
gpgkey=https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public

dnf list adoptopenjdk*

## 11をインストール
sudo dnf -y install adoptopenjdk-11-hotspot.x86_64

export LATEST_VER="8.6.0"

wget https://www-eu.apache.org/dist/lucene/solr/${LATEST_VER}/solr-${LATEST_VER}.tgz

tar xvf solr-${LATEST_VER}.tgz

cd solr-${LATEST_VER}/bin/

sudo ./install_solr_service.sh ~/solr-${LATEST_VER}.tgz

sudo systemctl status solr

<出力結果>
● solr.service - LSB: Controls Apache Solr as a Service
   Loaded: loaded (/etc/rc.d/init.d/solr; generated)
   Active: failed (Result: exit-code) since
     Docs: man:systemd-sysv-generator(8)
  Process: 194285 ExecStart=/etc/rc.d/init.d/solr start (code=exited, status=1/FAILURE)

localhost.localdomain solr[194285]:  If you no longer wish to see this warning, set SOLR_ULIMIT_CHECKS to false in your profile or solr.in.sh
localhost.localdomain solr[194285]: *** [WARN] ***  Your Max Processes Limit is currently 14989.
localhost.localdomain solr[194285]:  It should be set to 65000 to avoid operational disruption.
localhost.localdomain solr[194285]:  If you no longer wish to see this warning, set SOLR_ULIMIT_CHECKS to false in your profile or solr.in.sh
localhost.localdomain solr[194285]: Port 8983 is already being used by another process (pid: 192884)
localhost.localdomain solr[194285]: Please choose a different port using the -p option.
localhost.localdomain su[194287]: pam_unix(su-l:session): session closed for user solr
localhost.localdomain systemd[1]: solr.service: Control process exited, code=exited status=1
localhost.localdomain systemd[1]: solr.service: Failed with result 'exit-code'.
localhost.localdomain systemd[1]: Failed to start LSB: Controls Apache Solr as a Service.

Port 8983 is already being used by another process (pid: 192884)

sudo kill -9 192884

sudo systemctl status solr

<出力結果>
● solr.service - LSB: Controls Apache Solr as a Service
   Loaded: loaded (/etc/rc.d/init.d/solr; generated)
   Active: active (exited) since 
     Docs: man:systemd-sysv-generator(8)
  Process: 194519 ExecStart=/etc/rc.d/init.d/solr start (code=exited, status=0/SUCCESS)

localhost.localdomain solr[194519]: *** [WARN] *** Your open file limit is currently 1024.
localhost.localdomain solr[194519]:  It should be set to 65000 to avoid operational disruption.
localhost.localdomain solr[194519]:  If you no longer wish to see this warning, set SOLR_ULIMIT_CHECKS to false in your profile or solr.in.sh
localhost.localdomain solr[194519]: *** [WARN] ***  Your Max Processes Limit is currently 14989.
localhost.localdomain solr[194519]:  It should be set to 65000 to avoid operational disruption.
localhost.localdomain solr[194519]:  If you no longer wish to see this warning, set SOLR_ULIMIT_CHECKS to false in your profile or solr.in.sh
localhost.localdomain solr[194519]: [554B blob data]
localhost.localdomain solr[194519]: Started Solr server on port 8983 (pid=194664). Happy searching!
localhost.localdomain solr[194519]: [14B blob data]
localhost.localdomain systemd[1]: Started LSB: Controls Apache Solr as a Service.

sudo firewall-cmd --add-port=8983/tcp --zone=public --permanent
sudo firewall-cmd --reload

sudo su - solr -c "/opt/solr/bin/solr create -c testcollection -n data_driven_schema_configs"

<出力結果>
Created new core 'testcollection'