plugin的目录
plugin默认地址为安装目录的 ./plugins
代码语言：javascript复制[root@h102 elasticsearch]# rpm -ql elasticsearch-2.1.1-1.noarch | grep plugin
/usr/share/elasticsearch/bin/plugin
/usr/share/elasticsearch/plugins
[root@h102 elasticsearch]# ll /usr/share/elasticsearch/plugins
total 0
[root@h102 elasticsearch]# Tip: 由于没有插件，所以是空的
但是可以在 elasticsearch.yml 中进行修改
代码语言：javascript复制path.plugins: /path/to/custom/plugins/dir可以在 elasticsearch.yml 中设定强制要求的plugins
代码语言：javascript复制plugin.mandatory: mapper-attachments,lang-python设定之后，如果缺少指定的plugin，ES是不会启动的
安装plugin
详细的安装方法可以使用下面命令进行查看，也可以参考 plugin安装方法
代码语言：javascript复制[root@h102 elasticsearch]# /usr/share/elasticsearch/bin/plugin install -h安装head插件
代码语言：javascript复制[root@h102 elasticsearch]# /usr/share/elasticsearch/bin/plugin install mobz/elasticsearch-head
-> Installing mobz/elasticsearch-head...
Trying https://github.com/mobz/elasticsearch-head/archive/master.zip ...
Downloading ..................................................................................................................................................................................................................................................................................DONE
Verifying https://github.com/mobz/elasticsearch-head/archive/master.zip checksums if available ...
NOTE: Unable to verify checksum for downloaded plugin (unable to find .sha1 or .md5 file to verify)
Installed head into /usr/share/elasticsearch/plugins/head
[root@h102 elasticsearch]# echo $?
0
[root@h102 elasticsearch]# /usr/share/elasticsearch/bin/plugin list
Installed plugins in /usr/share/elasticsearch/plugins:
- head
[root@h102 elasticsearch]# ll /usr/share/elasticsearch/plugins
total 4
drwxr-xr-x 5 root root 4096 Dec 30 22:04 head
[root@h102 elasticsearch]#于是使用网页浏览 http://localhost:9200/_plugin/head/ 就可以看到下列界面
通过点击不同选项卡，和不同分片，可以看到相关信息
目前只能使用localhost进行访问，下面打开外部的访问
