这些是启动时会出的常见问题

解决办法： [root@chenxi elasticsearch]# vim /etc/sysctl.conf 在文件末尾追加：vm.max_map_count=655360 保存后执行 [root@chenxi elasticsearch]# sysctl -p

解决办法： [root@chenxi elasticsearch]# vim /etc/security/limits.conf

65535修改为65536

soft nofile 65536hard nofile 65536

文件末尾追加

soft nproc 4096hard nproc 4096 修改文件后保存并“关闭会话，重新登陆服务器”

解决办法： ##在elasticsearch.yml添加配置项 [root@chenxi elasticsearch]# vim config/elasticsearch.yml

--------------------------------- Discovery ----------------------------------

Pass an initial list of hosts to perform discovery when this node is started:

The default list of hosts is [“127.0.0.1”, “[::1]”]

#discovery.seed_hosts: [“host1”, “host2”]

Bootstrap the cluster using an initial set of master-eligible nodes:

取消注释，并保留一个节点

cluster.initial_master_nodes: [“node-1”]

解决办法： ##在elasticsearch.yml修改并添加配置项 [root@chenxi elasticsearch]# vim config/elasticsearch.yml

取消注释并设置值为false

bootstrap.memory_lock: false

追加配置项

bootstrap.system_call_filter: false