elasticsearch v7.x开放外网访问

rpm方式安装elasticsearch，版本elasticsearch-7.7.0-x86_64.rpm

顺带记录个国内镜像(HW)，官方的慢的不要不要的->> 戳我点开

安装完成后，正常启动本地访问正常，想着用外网看一下，结果碰到问题了，根本无法启动elasticsearch进程，报错elasticsearch.pid --quiet (code=exited, status=78)。

-bash-4.2$ service elasticsearch start

elasticsearch.service - Elasticsearch

  Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: disabled)

  Active: failed (Result: exit-code) since Wed 2020-03-18 11:45:40 CST; 1min 7s ago

    Docs: http://www.elastic.co

 Process: 7682 ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/elasticsearch.pid --quiet (code=exited, status=78)

Main PID: 7682 (code=exited, status=78)

解决方法：

配置文件：vi /etc/elasticsearch/elasticsearch.yml

network.host: 0.0.0.0

discovery.seed_hosts: ["0.0.0.0"]

再次重启服务后就成功了

-bash-4.2$ systemctl start elasticsearch.service

[root@mytesthost ~]# netstat -ntlp|grep 9200

记录的幺蛾子，以后可能还有很多。。。。难受