如果不设置 vm.max_map_count，ElasticSearch 5.0.0-aplha4 将无法启动

Question

我希望将我的 ES 版本从 2.3 更新到 5.0.0-alpha4，以便能够使用 Ingest 节点并将 Logstash 排除在外。但是，如果我不将 vm.max_map_count 设置为 262144，似乎 ES 5.x 版本将无法启动。我不想设置该值。我可以使用默认值 65530。任何人都可以指导我如何获得 ES 5。 x 启动时根本没有篡改内存设置。我无权访问要安装 ES 的主机上的 root 用户。
错误:

java.lang.UnsupportedOperationException: seccomp unavailable: CONFIG_SECCOMP not compiled into kernel, CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER are needed
at org.elasticsearch.bootstrap.Seccomp.linuxImpl(Seccomp.java:347)
at org.elasticsearch.bootstrap.Seccomp.init(Seccomp.java:616)
[2016-08-08 07:49:55,436][INFO ][node ] [data-cum-ingest-node] initializing ...
[2016-08-08 07:49:56,048][INFO ][plugins ] [data-cum-ingest-node] modules [percolator, lang-mustache, lang-painless, reindex, aggs-matrix-stats, lang-expression, ingest-common, lang-groovy], plugins []
[2016-08-08 07:49:56,601][INFO ][env ] [data-cum-ingest-node] heap size [7.9gb], compressed ordinary object pointers [true]
[2016-08-08 07:49:57,582][INFO ][node ] [data-cum-ingest-node] initialized
[2016-08-08 07:49:57,582][INFO ][node ] [data-cum-ingest-node] starting ...
[2016-08-08 07:49:57,635][ERROR][bootstrap ] [data-cum-ingest-node] Exception
java.lang.RuntimeException: bootstrap checks failed
max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]
at org.elasticsearch.bootstrap.BootstrapCheck.check(BootstrapCheck.java:125)
at org.elasticsearch.bootstrap.BootstrapCheck.check(BootstrapCheck.java:85)
at org.elasticsearch.bootstrap.BootstrapCheck.check(BootstrapCheck.java:65)
at org.elasticsearch.bootstrap.Bootstrap$5.validateNodeBeforeAcceptingRequests(Bootstrap.java:178)
at org.elasticsearch.node.Node.start(Node.java:373)
at org.elasticsearch.bootstrap.Bootstrap.start(Bootstrap.java:193)
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:252)
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:96)
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:91)
at org.elasticsearch.cli.SettingCommand.execute(SettingCommand.java:54)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:91)
at org.elasticsearch.cli.Command.main(Command.java:53)
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:70)
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:63)
Suppressed: java.lang.IllegalStateException: max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
at org.elasticsearch.bootstrap.BootstrapCheck.check(BootstrapCheck.java:126)

Answer 1

从 ES 5 开始，有一些 bootstrap checks是强制执行的。

其中一项检查是 Maximum map count check (仅在 Linux 上)，这需要 262144 个内存映射区域，否则它将拒绝启动。

请注意，无论 ES 运行在什么环境(dev 或 prod)中，都会强制执行此检查