./bin/elasticsearch
cp elasticsearch-8.17.2/config/elasticsearch.yml bak.yml
cp elasticsearch-8.17.2/config/jvm.options bak.options
rm -rf elasticsearch-8.17.2/config/elasticsearch.yml
rm -rf elasticsearch-8.17.2/config/jvm.options
mv elasticsearch.yml elasticsearch-8.17.2/config/
sudo chown -R es8:es8 /data/g/es
su – es8
firewall-cmd –zone=public –add-port=9300-9399/tcp –permanent
firewall-cmd –reload
不要设置上述防火墙。取消防火墙方法：
systemctl stop firewalld
如果之前 systemctl enable firewalld过，就还需要systemctl disable firewalld，关闭开机自启动
rm -rf /data/xg/es/data/*
rm -rf /data/xg/es/logs/*
sudo systemctl stop elasticsearch
netstat -antp |grep 9200<