Elasticsearch5.x 安装问题集锦

elasticsearch 5.x 安装过程中遇到了一些问题,通过查找资料几乎都解决掉了,这里简单记录一下 ,供以后查阅参考,也希望可以帮助遇到同样问题的你。

问题一:警告提示

[2016-11-06T16:27:21,712][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.Seccomp.linuxImpl(Seccomp.java:349) [elasticsearch-5.0.0.jar:5.0.0]
at org.elasticsearch.bootstrap.Seccomp.init(Seccomp.java:630) [elasticsearch-5.0.0.jar:5.0.0]

报了一大串错误,其实只是一个警告。

解决:使用新的linux版本,就不会出现此类问题了。不解决也不影响ES启动。

问题二:ERROR: bootstrap checks failed

max file descriptors [4096] for elasticsearch process likely too low, increase to at least [65536]
max number of threads [1024] for user [lishang] likely too low, increase to at least [2048]

解决:切换到root用户,编辑limits.conf 添加类似如下内容

vi /etc/security/limits.conf
添加如下内容:

* soft nofile 65536
* hard nofile 131072
* soft nproc 2048
* hard nproc 4096

问题三:max number of threads [1024] for user [lish] likely too low, increase to at least [2048]

解决:切换到root用户,进入limits.d目录下修改配置文件。

vi /etc/security/limits.d/90-nproc.conf
修改如下内容:

soft nproc 1024
修改为

soft nproc 2048

问题四:max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]

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=655360

并执行命令:

sysctl -p
然后,重新启动elasticsearch,即可启动成功。

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