环境准备

# TODO 安装 Java 环境即可

安装及配置

1. 安装过程

$ wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.5.3.zip
$ wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.5.3.zip.sha512
shasum -a 512 -c elasticsearch-6.5.3.zip.sha512 
$ unzip elasticsearch-6.5.3.zip
$ cd elasticsearch-6.5.3/

# 启动
$ ./bin/elasticsearch -d -p pid

# 停止只能杀进程
$ kill `cat pid`

2. 配置
   配置文件在 config 目录下， 同时也可以在执行时配置 ES_PATH_CONF 属性来进行修改，比如 ES_PATH_CONF=/path/to/my/config ./bin/elasticsearch 。

1. elasticsearch.yml   为 es 基础配置文件
2. jvm.options        为 jvm 相关配置
3. log4j2.properties   为日志配置文件

3. 配置数据及日志文件
   在 elasticsearch.yml 文件中存在如下两个配置项，修改即可

path:
    data: /var/lib/elasticsearch
    logs: /var/log/elasticsearch

4. 节点配置

# 集群名称
cluster.name: wc-elk

# 当前主机信息
# node.name:    ${HOSTNAME}
node.name:    es-n1
# network.host: ${ES_NETWORK_HOST}
network.host: 172.xxx.xxx.35
# 端口配置
# http.port: 9200

# 集群主机配置
discovery.zen.ping.unicast.hosts: ["172.xxx.xxx.35", "172.xxx.xxx.36","172.xxx.xxx.37"]

安装插件

这里以 IK Analysis 插件为例

IK Analysis 插件是一款专门用于 Elasticsearch 的分词器，可以友好的处理中文

$ ./bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.5.1/elasticsearch-analysis-ik-6.5.1.zip

查看状态

1. 查看节点信息

# GET <es_ip>:<port>/_cat/nodes?v
$ curl 172.xxx.xxx.35:9200/_cat/nodes?v
ip            heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name
172.xxx.xxx.35           59           9   1    0.47    0.49     0.50 mdi       *      es-1
172.xxx.xxx.36           64          11   0    0.41    0.37     0.39 mdi       -      es-2
172.xxx.xxx.37           52           8   0    0.16    0.15     0.19 mdi       -      es-3

2. 查看 ES 健康状态

# GET <es_ip>:<port>/_cat/health?v
$ GET 172.xxx.xxx.35:9200/_cat/health?v
epoch      timestamp cluster status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent
1544703447 20:17:27  wc-elk  green           3         3     22  11    2    0        0             4             42.9ms                100.0%

3. 查看所有 index 状态

# GET <es_ip>:<port>/_cat/indices?v
$ GET 172.xxx.xxx.35:9200/_cat/indices?v
health status index              uuid                   pri rep docs.count docs.deleted store.size pri.store.size
green  open   .kibana            9aPp-WYKTcuSOW1i85sDRw   1   1          4            0     45.5kb         22.7kb
green  open   jobbole            PFfMJirfSuCvmLTJqOOYEw   5   1       5375         1636    856.7mb        427.2mb
green  open   wc_test-2018.11.09 TGbYRDvWTaOk5bvbpRhEhw   5   1      20084            0     21.6mb         10.7mb

4. 查看某个 index 相关数据

# GET <es_ip>:<port>/_cat/indices/<index名称>?v
$ curl 172.xxx.xxx.35:9200/_cat/indices/jobbole_blog?v
health status index        uuid                   pri rep docs.count docs.deleted store.size pri.store.size
green  open   jobbole_blog G1g6HRDpQjKAsqBhJwrktg   5   1       5375          816    393.9mb        200.8mb

5. 删除某个 index

# 先删除
# DELETE <es_ip>:<port>/<index 名称>?pretty
$ DELETE 172.xxx.xxx.35:9200/jobbole_blog?pretty

# 查看结果
# GET <es_ip>:<port>/_cat/indices?v
$ DELETE 172.xxx.xxx.35:9200/_cat/indices?v

6. 所有记录

# POST <es_ip>:<port>/<index名称>/_search?pretty
$ curl 172.xxx.xxx.35:9200/jobbole_blog/_search?pretty

7. 删除所有记录

# DELETE <es_ip>:<port>/<index名称>/<index 类型>/<记录id>?pretty
$ DELETE 172.xxx.xxx.35:9200/jobbole_blog/doc/2?pretty

8. 获取内存等统计

# GET <es_ip>:<port>/<index名称>/_stats?pretty
$ GET 172.xxx.xxx.35:9200/jobbole/_stats?pretty