# cd Downloads ⏎
　# wget https://github.com/codelibs/fess/releases/download/fess-14.11.0/fess-14.11.0.rpm ⏎
　# rpm -ivh Downloads/fess-14.11.0.rpm ⏎
/usr/lib/tmpfiles.d/fess.conf の修正
　　　/var/run/fess ==> /run/fess

　# rpm -Uvh Downloads/opensearch-2.11.0-linux-x64.rpm ⏎

/usr/lib/tmpfiles.d/opensearch.conf の修正
　　　/var/run/opensearch ==> /run/opensearch

　# /usr/share/opensearch/bin/opensearch-plugin install org.codelibs.opensearch:opensearch-analysis-fess:2.11.0 ⏎
Continue with instration?[y/N] y
　# /usr/share/opensearch/bin/opensearch-plugin install org.codelibs.opensearch:opensearch-analysis-extension:2.11.0 ⏎
Continue with instration?[y/N] y
　# /usr/share/opensearch/bin/opensearch-plugin install org.codelibs.opensearch:opensearch-minhash:2.11.0 ⏎
　# /usr/share/opensearch/bin/opensearch-plugin install org.codelibs.opensearch:opensearch-configsync:2.11.0 ⏎
Continue with instration?[y/N] y

　/etc/opensearch/opensearch.yml に下記の設定を加えます
　configsync.config_path: /var/lib/opensearch/data/config/
　plugins.security.disabled: true
　----------を変更します
　cluster.name: my-application
　network.host: 127.0.0.1　　# network.hostに書いた名前でリクエストされたら返事する
　http.port: 9200
　discovery.seed_hosts: ["127.0.0.1", "[::1]"]

　/usr/share/fess/bin/fess.in.sh ---- を変更します
　SEARCH_ENGINE_HTTP_URL=http://localhost:9200
　FESS_DICTIONARY_PATH=/var/lib/opensearch/data/config/

　systemctl daemon-reload ⏎
　systemctl enable opensearch.service ⏎
　systemctl enable fess.service ⏎