解决Elasticsearch的java.lang.UnsupportedOperationException: seccomp unavailable: requires kernel 3.5+

[leyou@backbay2 ~]$ cd elasticsearch/bin/
[leyou@backbay2 bin]$ ./elasticsearch
[2020-04-26T01:47:33,363][WARN ][o.e.b.JNANatives         ] unable to install syscall filter: 
java.lang.UnsupportedOperationException: seccomp unavailable: requires kernel 3.5+ with CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER compiled in
        at org.elasticsearch.bootstrap.SystemCallFilter.linuxImpl(SystemCallFilter.java:328) ~[elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.SystemCallFilter.init(SystemCallFilter.java:616) ~[elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.JNANatives.tryInstallSystemCallFilter(JNANatives.java:258) [elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.Natives.tryInstallSystemCallFilter(Natives.java:113) [elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:109) [elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:171) [elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:326) [elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) [elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:127) [elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) [elasticsearch-cli-6.3.0.jar:6.3.0]
        at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) [elasticsearch-6.3.0.jar:6.3.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:86) [elasticsearch-6.3.0.jar:6.3.0]

原因：

我们使用的是centos6，其linux内核版本为2.6。而Elasticsearch的插件要求至少3.5以上版本。

解决办法

我们禁用这个插件即可。

修改elasticsearch.yml文件，在最下面添加如下配置：

bootstrap.system_call_filter: false

然后重启