centos7搭建Elasticsearch

1.安装配置

(1).从官网下载安装包，官网链接：elasticstack官网
(2).解压缩
(3).修改配置文件
elasticsearch.yml:
cluster.name: centos-es
node.name: node-centos7
path.data: /home/hadoop/psbc/data/elasticsearch
path.logs: /home/hadoop/psbc/log/elasticsearch
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
network.host: 0.0.0.0
discovery.zen.ping.unicast.hosts: [“192.168.100.100”]
discovery.zen.minimum_master_nodes: 1

2.启动

bin/elasticsearch

3.启动产生的问题解决

启动失败,有以下错误:
ERROR: [2] bootstrap checks failed
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

解决:
echo “* soft nofile 65536” >>/etc/security/limits.conf
echo "* hard nofile 131072 >>/etc/security/limits.conf
echo “hadoop soft nproc 4096” >>/etc/security/limits.conf
echo “hadoop hard nproc 4096” >>/etc/security/limits.conf
echo “vm.max_map_count=262144”>>/etc/sysctl.conf

sysctl -p
vm.max_map_count = 262144

4.重新启动

(1).查询进程
ps -ef|grep elastic
(2).通过端口号查询
ss -tnlp|grep 9200