elasticsearch启动错误

requires kernel 3.5+ with CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER compiled 
java.lang.UnsupportedOperationException: seccomp unavailable: requires kernel 3.5+ with CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER compiled in
        at org.elasticsearch.bootstrap.Seccomp.linuxImpl(Seccomp.java:349) ~[elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.Seccomp.init(Seccomp.java:630) ~[elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.JNANatives.trySeccomp(JNANatives.java:215) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.Natives.trySeccomp(Natives.java:99) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:105) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:176) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:306) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.cli.SettingCommand.execute(SettingCommand.java:54) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:96) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.cli.Command.main(Command.java:62) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:89) [elasticsearch-5.1.1.jar:5.1.1]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:82) [elasticsearch-5.1.1.jar:5.1.1]

原因：报了一大串错误，大家不必惊慌，其实只是一个警告，主要是因为你Linux版本过低造成的。

解决方案：
1、重新安装新版本的Linux系统
2、警告不影响使用，可以忽略

ERROR: bootstrap checks failed
max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536]
原因：无法创建本地文件问题,用户最大可创建文件数太小
解决方法：切换到root用户，编辑limits.conf 添加类似如下内容
vi /etc/security/limits.conf
* soft nofile 65536
* hard nofile 131072

max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
原因：最大虚拟内存太小
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=262144
并执行命令：
sysctl -p

/etc/security/limits.conf  修改后未生效问题

修改/etc/security/limits.d/90-nproc.conf覆盖/etc/security/limits.conf的配置

* soft nofile 65536
* hard nofile 131072

用户重新登录生效