安装jdk

rpm -qa |grep java
rpm -qa |grep jdk
rpm -qa |grep gcj
rpm -e
yum install java-1.8.0-openjdk* -y
java -version

下载elasticsearch-6.2.4

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.2.4.tar.gz
tar -zxvf elasticsearch-6.2.4.tar.gz

新建一个es组和用户

groupadd es #新建组
useradd es -g es #新建用户
sudo chown es:es /usr/local/elasticsearch-6.2.4
su es #切换用户

修改配置文件

vim conf/elasticsearch
path.data: /usr/local/elasticsearch-6.2.4/data
path.logs: /usr/local/elasticsearch-6.2.4/logs
mkdir data
network.host: 0.0.0.0

vim conf/jvm.options
-Xms512m
-Xmx512m

启动

bin/elasticsearch

中文分词： elasticsearch-analysis-ik

https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.2.4/elasticsearch-analysis-ik-6.2.4.zip
mv elasticsearch-analysis-ik-6.2.4.zip ./elasticsearch-6.2.4/plugins/
unzip elasticsearch-analysis-ik-6.2.4.zip
rm elasticsearch-analysis-ik-6.2.4.zip
bin/elasticsearch

新装es启动时，会遇到以下错误情况：

ERROR: [3] bootstrap checks failed
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
解决办法：
编辑 /etc/security/limits.conf，追加以下内容；

• soft nofile 65536
• hard nofile 65536
  此文件修改后需要重新登录用户，才会生效

[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
解决办法：
编辑 /etc/sysctl.conf，追加以下内容：
vm.max_map_count=655360
保存后，执行：
sysctl -p

systemctl stop firewalld.service

docker exec -it e6c060f721fc nginx -s reload

最大尝试次数
php artisan queue:work --tries=3