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2016年(1)

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分类: 系统运维

2016-12-13 16:03:11

1 准备工作

服务器信息:

192.168.91.221  (elasticsearch-node1)

192.168.91.222  (elasticsearch-node2)
192.168.91.223  (elasticsearch-node3)

1.1 安装 Java 环境(3个节点)

91221.elk.node1.com<2016-12-13 17:23:38=""> ~ root># yum install vim openssh-clients lrzsz -y root># yum install java-1.8.0-openjdk java-1.8.0-openjdk-devel -y

这里 java-1.8.0-openjdk-devel 非必须安装,但以后安装插件时可能会需要 Java 的编译器(javac),因此建议提前安装好。

验证版本:

91221.elk.node1.com<2016-12-13 17:33:52=""> ~
root># java -version
openjdk version "1.8.0_111"
OpenJDK Runtime Environment (build 1.8.0_111-b15)
OpenJDK 64-Bit Server VM (build 25.111-b15, mixed mode)

1.2 安装 elasticsearch 环境(3个节点)

Elasticsearch 集群:防止因Elasticsearch 服务挂掉,丢失数据
Elasticsearch 集群原理:会自动寻找同一网段cluster.name: es-cluster 名称相同的节点。
软件下载:

node1 配置

91221.elk.node1.com<2016-12-13 17:49:33=""> ~/elk
root># tar -zxvf elasticsearch-2.4.1.tar.gz -C /opt/
root># mv elasticsearch-2.4.1/ elasticsearch-node1
root># vim /opt/elasticsearch-node1/config/elasticsearch.yml
elasticsearch>$ cat config/elasticsearch.yml|grep -Ev "^#|^$"
http.cors.enabled: true
http.cors.allow-origin: "*"
cluster.name: es-cluster    #集群名称,默认为elasticsearch
node.name: es-node1         #节点名称
node.master: true           #是否作为主节点,每个节点都可以被配置成为主节点,默认值为true
node.data: true             #是否存储数据,即存储索引片段,默认值为true
bootstrap.mlockall: true    #JVM开始交换时,ElasticSearch表现并不好:你需要保障JVM不进行交换,可以将bootstrap.mlockall设置为true禁止交换:
network.host: 192.168.91.221
http.port: 9200
discovery.zen.ping.timeout: 3s  #设置ping其他节点时的超时时间,网络比较慢时可将该值设大

discovery.zen.ping.unicast.hosts: ["192.168.91.221", "192.168.91.222", "192.168.91.223"] #设置新节点被启动时能够发现的主节点列表(主要用于不同网段机器连接)

node2 配置

root># scp -rp /opt/elasticsearch-node1/ root@192.168.91.222:/opt/elasticsearch-node2

修改 elasticsearch.yml  配置文件

只需要修改以下配置,其它不用修改

http.port: 9202

: "es-node2"

node3 配置

root># scp -rp /opt/elasticsearch-node1/ root@192.168.91.223:/opt/elasticsearch-node23

修改 elasticsearch.yml  配置文件

只需要修改以下配置,其它不用修改

http.port: 9200

: "es-node3"

启动(3台)

root># useradd elasticsearch
root># chown -R elasticsearch:elasticsearch /opt/elasticsearch-node1/
root># chown -R elasticsearch:elasticsearch /opt/elasticsearch-node2/
root># chown -R elasticsearch:elasticsearch /opt/elasticsearch-node3/

切换到elasticsearch启动

91221.elk.node1.com<2016-12-13 18:09:46=""> /opt/elasticsearch-node1/bin
elasticsearch>$ ./bin/elasticsearch
[2016-12-13 19:38:24,479][WARN ][bootstrap                ] unable to install syscall filter: seccomp unavailable: requires kernel 3.5+ with CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER compiled in
[2016-12-13 19:38:24,486][WARN ][bootstrap                ] Unable to lock JVM Memory: error=12,reason=Cannot allocate memory
[2016-12-13 19:38:24,487][WARN ][bootstrap                ] This can result in part of the JVM being swapped out.
[2016-12-13 19:38:24,487][WARN ][bootstrap                ] Increase RLIMIT_MEMLOCK, soft limit: 65536, hard limit: 65536
[2016-12-13 19:38:24,487][WARN ][bootstrap                ] These can be adjusted by modifying /etc/security/limits.conf, for example:
# allow user 'elasticsearch' mlockall
elasticsearch soft memlock unlimited
elasticsearch hard memlock unlimited
[2016-12-13 19:38:24,487][WARN ][bootstrap                ] If you are logged in interactively, you will have to re-login for the new limits to take effect.
[2016-12-13 19:38:24,732][INFO ][node                     ] [es-node1] version[2.4.1], pid[2205], build[c67dc32/2016-09-27T18:57:55Z]
[2016-12-13 19:38:24,732][INFO ][node                     ] [es-node1] initializing ...
[2016-12-13 19:38:25,547][INFO ][plugins                  ] [es-node1] modules [reindex, lang-expression, lang-groovy], plugins [head, kopf], sites [head, kopf]
[2016-12-13 19:38:25,576][INFO ][env                      ] [es-node1] using [1] data paths, mounts [[/ (/dev/mapper/VolGroup-lv_root)]], net usable_space [41.3gb], net total_space [44.8gb], spins? [possibly], types [ext4]
[2016-12-13 19:38:25,577][INFO ][env                      ] [es-node1] heap size [990.7mb], compressed ordinary object pointers [true]
[2016-12-13 19:38:25,577][WARN ][env                      ] [es-node1] max file descriptors [4096] for elasticsearch process likely too low, consider increasing to at least [65536]
[2016-12-13 19:38:27,698][INFO ][node                     ] [es-node1] initialized
[2016-12-13 19:38:27,699][INFO ][node                     ] [es-node1] starting ...
[2016-12-13 19:38:27,802][INFO ][transport                ] [es-node1] publish_address {192.168.91.221:9300}, bound_addresses {192.168.91.221:9300}
[2016-12-13 19:38:27,810][INFO ][discovery                ] [es-node1] es-cluster/eSp8hMm5Q5Cp2Txk-cWdmg
[2016-12-13 19:38:30,888][INFO ][cluster.service          ] [es-node1] new_master {es-node1}{eSp8hMm5Q5Cp2Txk-cWdmg}{192.168.91.221}{192.168.91.221:9300}{master=true}, added {{es-node2}{a-Jjk2FDQJeVRd3v7l6txg}{192.168.91.222}{192.168.91.222:9300}{master=false},{node-3}{r4P8l0P5QNWztxI4ILuwhw}{192.168.91.223}{192.168.91.223:9300}{master=false},}, reason: zen-disco-join(elected_as_master, [0] joins received)
[2016-12-13 19:38:31,039][INFO ][http                     ] [es-node1] publish_address {192.168.91.221:9200}, bound_addresses {192.168.91.221:9200}
[2016-12-13 19:38:31,039][INFO ][node                     ] [es-node1] started
[2016-12-13 19:38:31,272][INFO ][gateway                  ] [es-node1] recovered [0] indices into cluster_state

后台启动

91221.elk.node1.com<2016-12-13 18:12:15=""> /opt/elasticsearch-node1/bin
elasticsearch>$ ./elasticsearch -d

1.3检查是否启动成功(OK)

elasticsearch>$ curl

{
  "name" : "es-node1",
  "cluster_name" : "es-cluster",
  "cluster_uuid" : "igGG2L-HR-2xXTWC6FgLbQ",
  "version" : {
    "number" : "2.4.1",
    "build_hash" : "c67dc32e24162035d18d6fe1e952c4cbcbe79d16",
    "build_timestamp" : "2016-09-27T18:57:55Z",
    "build_snapshot" : false,
    "lucene_version" : "5.5.2"
  },
  "tagline" : "You Know, for Search"
}
或打开网页



2  集群管理插件

Elasticsearch-head

安装

# /opt/elasticsearch-node1/bin/plugin install mobz/elasticsearch-head
-> Installing mobz/elasticsearch-head...
Trying ...
Downloading ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................DONE
Verifying checksums if available ...
NOTE: Unable to verify checksum for downloaded plugin (unable to find .sha1 or .md5 file to verify)
Installed head into /opt/elasticsearch-node1/plugins/head

访问 

可方便查询索引数据及索引大小,如下图所示:

node2安装
91222.elk.node2.com<2016-12-13 18:15:29=""> /opt/elasticsearch-node2/bin
elasticsearch>$ /opt/elasticsearch-node2/bin/plugin install mobz/elasticsearch-head
node3安装
91223.elk.node3.com<2016-12-13 18:15:33=""> /opt/elasticsearch-node3/bin
elasticsearch>$ /opt/elasticsearch-node3/bin/plugin install mobz/elasticsearch-head

Elasticsearch-kofp

功能: 集群管理,监控查看cpu、内存使用情况、在线查询/提交elsticsearch数据

 安装

91221.elk.node1.com<2016-12-13 19:49:40=""> /opt/elasticsearch-node1
elasticsearch>$ /opt/elasticsearch-node1/bin/plugin install lmenezes/elasticsearch-kopf

访问 /_plugin/kopf




ES插件BigDesk安装

bigdesk支持的最新版本的ES是1.3.0 ... 1.3.x
然而想要在新版本ES上安装(2.x.x),项目中遇到过一些BUG,在ES在最新版本中有修复

1.下载bigdesk的master的zip包
2.解压到安装路径下 elasticsearch-2.4.1/plugins/目录下,会有一个bigdesk或者bigdesk-master(可以改成bigdesk)目录,然后再新建一个目录_site,压缩包里的文件放到_site目录中。
3.提示没有找到'plugin-descriptor.properties'文件,那就创建这个文件,并写入以下内容
91221.elk.node1.com<2016-12-13 20:15:42=""> /opt/elasticsearch-node1/plugins/bigdesk
elasticsearch>$ cat /opt/elasticsearch-node1/plugins/bigdesk/plugin-descriptor.properties
description=bigdesk
version=bigdesk
name=bigdesk
site=true
保存OK,大功告成。
然后在本地浏览器中输入
注:_plugin后面的bigdesk就是plugins地下目录名字,若是bigdesk-master,则需要写这个名字
本以为会正常运行,然而出现了一个js弹框,有这样的内容
**************************
Bigdesk may not work correctly!
Found ES node version:2.3.0
Require ES node version:>= 1.0.0.RC1
**************************
解决办法:
  定位到plugins/bigdesk/_site/js/store目录,打开BigdeskStore.js,定位到142行

return (major == 1 && minor >= 0 && maintenance >= 0 && (build != 'Beta1' || build != 'Beta2'));
看到这么一行,把 major ==1 改成 major >=1,然后保存。
浏览器重新打开 /_plugin/bigdesk/
OK.可以看到正常运行了。


Marvel

Marvel是Elastic公司推出的商业监控方案,是用来监控Elasticsearch集群,历史状态的有力工具,便于性能优化以及故障诊断。监控主要分为六个层面,分别是集群层、节点层、索引层、分片层、事件层、Sense。

安装步骤:

1) 在Elasticsearch中安装Marvel插件。

bin/plugin install license

bin/plugin install marvel-agent

2) 在Kibana中安装Marvel插件

bin/kibana plugin --install elasticsearch/marvel/latest

3) 启动Elasticsearch和Kibana

bin/elasticsearch

bin/kibana

安装好后在浏览器中输入:即可看到界面如图9.1所示。


参考文档:

https://my.oschina.net/topeagle/blog/405149  elasticsearch配置文件详解
 
Elasticsearch 2.x.x版本如何安装bigdesk



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