java.lang.RuntimeException: can not run elasticsearch as root
原因：为了安全起见不能以root用户启动 解决方法：单独为elasticsearch创建一个新的用户
java.lang.UnsupportedOperationException: seccomp unavailable: CONFIG_SECCOMP not compiled into kernel, CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER are needed
在所有节点的elasticsearch.yml配置文件中加入:
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
memory locking requested for elasticsearch process but memory is not locked
编辑 /etc/security/limits.conf 添加如下内容:
* soft nofile 65536
* hard nofile 65536
* soft memlock unlimited
* hard memlock unlimited
备注：* 代表Linux所有用户名称
max number of threads [2048] for user [es] is too low, increase to at least [4096]
编辑 vim /etc/security/limits.d/90-nproc.conf
从2048改为4096
* soft nproc 4096
备注：* 代表Linux所有用户名称
max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
编辑 /etc/sysctl.conf，添加如下内容，执行sysctl -p后生效
vm.max_map_count=262144