elasticsearch应用之常见的问题及解决办法总结,elasticsearch总结(二)

elasticsearch常见的问题及解决办法总结,elasticsearch总结

记录Linux下安装elasticSearch时遇到的一些错误

 

1、unable to install syscall filter:Java.lang.UnsupportedOperationException:seccomp unavailable: requires kernel 3.5+ with CONFIG_SECCOMPandCONFIG_SECCOMP_FILTERcompiledinatorg.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]

原因:主要是linux的版本过低

解决方案:

重新安装新版本的linux系统

2、ERROR: bootstrap checks failed:max file descriptors [4096] for elasticsearch process likely 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

解决方案:

切换到root用户,编辑limits.conf配置文件, 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

备注:* 代表Linux所有用户名称(比如hadoop)

保存、退出、重新登录才可生效

3、max number of threads [1024] for user [es] likely too low, increase to at least [2048]

原因:无法创建本地线程问题,用户最大可创建线程数太小

解决方案:

切换到root用户,进入limits.d目录下,修改90-nproc.conf 配置文件。

vi /etc/security/limits.d/90-nproc.conf

修改 * soft nproc 1024 为? * soft nproc 2048

4、max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]

原因:最大虚拟内存太小

解决方案:

切换到root用户下,修改配置文件sysctl.conf

vi /etc/sysctl.conf

添加下面配置:vm.max_map_count=655360

并执行命令:sysctl -p

5、ElasticSearch启动找不到主机或路由

原因:ElasticSearch 单播配置有问题

解决方案:检查ElasticSearch中的配置文件

vim config/elasticsearch.yml

注意此配置格式

discovery.zen.ping.unicast.hosts:["192.168.**.**:9300","192.168.**.**:9300"]

6、org.elasticsearch.transport.RemoteTransportException: Failed to deserialize exception response from stream

原因:ElasticSearch节点之间的jdk版本不一致

7、Unsupported major.minor version 52.0

原因:jdk版本太低

解决方案:elasticsearch5.0.0支持jdk1.8.0

8、bin/elasticsearch-plugin install license? ? ? ? ERROR: Unknown plugin license

原因:ElasticSearch5.0.0以后插件命令已经改变

解决方案:bin/elasticsearch-plugin install x-pack

9、启动异常:ERROR: bootstrap checks failed? ?system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk?

原因:因为Centos6不支持SecComp,而ES5.2.1默认bootstrap.system_call_filter为true进行检测,所以导致检测失败,失败后直接导致ES不能启动。详见 :https://github.com/elastic/elasticsearch/issues/22899

解决方案:在elasticsearch.yml中配置bootstrap.system_call_filter为false,注意要在Memory下面

bootstrap.memory_lock: false

bootstrap.system_call_filter: false

10、格式问题:Exception in thread "main" 2017-11-10 06:29:49,106 main ERROR No log4j2 configuration file found. Using default configuration: logging only errors to the console. Set system property 'log4j2.debug' to show Log4j2 internal initialization logging.ElasticsearchParseException[malformed, expected settings to start with 'object', instead was [VALUE_STRING]]

原因:elasticsearch.yml中的配置项的格式有问题

解决方案:请尽量保持冒号前面没空格,后面一个空格,不要用tab键

bootstrap.memory_lock: false

=============================================

记录下安装ES过程中遇到的错误及解决

1.集群配置 需要修改

cluster.name 、node.name 、network.host: 0.0.0.0【此处默认localhost】、http.port: 9200

只要集群名相同,且机器处于同一局域网同一网段,es会自动去发现其他的节点

注意:elasticsearch.yml中设置项中冒号右边要加一个空格

2.提示错误

问题一:警告提示
[2016-12-20T22:37:28,543][INFO ][o.e.b.BootstrapCheck     ] [elk-node1] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
[2016-12-20T22:37:28,552][ERROR][o.e.b.Bootstrap          ] [elk-node1] node validation exception
bootstrap checks failed
max number of threads [1024] for user [elasticsearch] is too low, increase to at least [2048]
[2016-12-20T22:37:28,560][INFO ][o.e.n.Node               ] [elk-node1] stopping ...
[2016-12-20T22:37:28,628][INFO ][o.e.n.Node               ] [elk-node1] stopped
[2016-12-20T22:37:28,629][INFO ][o.e.n.Node               ] [elk-node1] closing ...
[2016-12-20T22:37:28,677][INFO ][o.e.n.Node               ] [elk-node1] closed

报了一大串错误,其实只是一个警告。

解决:使用心得linux版本,就不会出现此类问题了。

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。

 

posted on 2018-03-19 10:12  让代码飞  阅读(359)  评论(0)    收藏  举报

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