第一步、修改ElasticSearch根目录下的config文件夹下的elasticsearch.yml文件，如图
现在启动服务你会发现出现3个错误
elasticsearch 5.1 安装过程中遇到了一些问题做一些记录。 问题一：警告提示 [2016-12-20T22:37:28,543][INFO ][o.e.b.BootstrapCheck ] [elk-node1] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks [2016-12-20T22:37:28,552][ERROR][o.e.b.Bootstrap ] [elk-node1] node validation exception bootstrap checks failed max number of threads [1024] for user [elasticsearch] is too low, increase to at least [2048] [2016-12-20T22:37:28,560][INFO ][o.e.n.Node ] [elk-node1] stopping ... [2016-12-20T22:37:28,628][INFO ][o.e.n.Node ] [elk-node1] stopped [2016-12-20T22:37:28,629][INFO ][o.e.n.Node ] [elk-node1] closing ... [2016-12-20T22:37:28,677][INFO ][o.e.n.Node ] [elk-node1] closed 报了一大串错误，其实只是一个警告。 解决：使用新的linux版本，就不会出现此类问题了。 问题二：ERROR: bootstrap checks failed max file descriptors [4096] for elasticsearch process likely too low, increase to at least [65536] max number of threads [1024] for user [lishang] likely too low, increase to at least [2048] 解决：切换到root用户，编辑limits.conf 添加类似如下内容 vi /etc/security/limits.conf 添加如下内容: * soft nofile 65536 * hard nofile 131072 * soft nproc 2048 * hard nproc 4096 问题三：max number of threads [1024] for user [lish] likely too low, increase to at least [2048] 解决：切换到root用户，进入limits.d目录下修改配置文件。 vi /etc/security/limits.d/90-nproc.conf 修改如下内容： * soft nproc 1024 #修改为 * soft nproc 2048 问题四：max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144] 解决：切换到root用户修改配置sysctl.conf vi /etc/sysctl.conf 添加下面配置： vm.max_map_count=655360 并执行命令： sysctl -p 然后，重新启动elasticsearch，即可启动成功。
然后在本机上输入本机ip:9200测试即可