在/etc/profile里面配置
export JAVA_HOME=/usr/local/src/jdk1.8.0_171
export JRE_HOME=/usr/local/src/jdk1.8.0_171/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib
export PATH=$JAVA_HOME/bin:$PATH

curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.0.1.tar.gz

tar -zxvf elasticsearch-6.0.1.tar.gz

useradd  elasticsearchchown elasticsearch:elasticsearch elasticsearch-6.0.1  -R

su - elasticsearch

cd elasticsearch-6.0.1/bin
启动我们的节点和单个集群
./elasticsearch

./elasticsearch -Ecluster.name = my_cluster_name -Enode.name = my_node_name

network.host: 192.168.73.133

{"name" : "91NMjsU","cluster_name" : "elasticsearch","cluster_uuid" : "sbyxgvkLTle-La47kVfzPQ","version" : {"number" : "6.0.1","build_hash" : "601be4a","build_date" : "2017-12-04T09:29:09.525Z","build_snapshot" : false,"lucene_version" : "7.0.1","minimum_wire_compatibility_version" : "5.6.0","minimum_index_compatibility_version" : "5.0.0"},"tagline" : "You Know, for Search"
}

ERROR: bootstrap checks failed
max file descriptors [10240] for elasticsearch process likely too low, increase to at least [65536]
max number of threads [1024] for user [elsearch] likely too low, increase to at least [2048]
max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]
[2016-11-14T10:22:17,569][INFO ][o.e.n.Node               ] [mysteel-node1] stopping ...
[2016-11-14T10:22:17,615][INFO ][o.e.n.Node               ] [mysteel-node1] stopped

* soft nofile 65536* hard nofile 131072* soft nproc 2048* hard nproc 4096

修改如下内容：* soft nproc 1024#修改为* soft nproc 2048

ERROR: bootstrap checks failed
system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk

原因：
这是在因为Centos6不支持SecComp，而ES5.2.0默认bootstrap.system_call_filter为true进行检测，所以导致检测失败，失败后直接导致ES不能启动。

解决：

在elasticsearch.yml中配置bootstrap.system_call_filter为false，注意要在Memory下面:
bootstrap.memory_lock: false
bootstrap.system_call_filter: false

4最后一种

ERROR: bootstrap checks failed
max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

解决办法：

修改/etc/sysctl.conf 文件，添加 “vm.max_map_count”设置vm.max_map_count=262144
并执行：sysctl -p