摘要：安裝前的檢查安裝之前，你需要先安裝一個較新的版本的，最好的選擇是，你可以從獲得官方提供的最新版本的。

安裝 Elasticsearch 之前，你需要先安裝一個較新的版本的 Java，最好的選擇是，你可以從 www.java.com 獲得官方提供的最新版本的 Java。

安裝JDK

sudo yum install java-1.8.0-openjdk.x86_64

測試

[vagrant@localhost vagrant_data]$ java -version
openjdk version "1.8.0_161"
OpenJDK Runtime Environment (build 1.8.0_161-b14)
OpenJDK 64-Bit Server VM (build 25.161-b14, mixed mode)

執行以下命令

curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.8.tar.gz
tar -xvf elasticsearch-5.6.8.tar.gz
cd elasticsearch-5.6.8/bin
./elasticsearch

測試是否安裝成功

[vagrant@localhost elasticsearch-5.6.8]$ curl "http://localhost:9200/?pretty"
{
  "name" : "Lx20sHw",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "gnYSlRb9TUqpVnBscm1-GQ",
  "version" : {
    "number" : "5.6.8",
    "build_hash" : "688ecce",
    "build_date" : "2018-02-16T16:46:30.010Z",
    "build_snapshot" : false,
    "lucene_version" : "6.6.1"
  },
  "tagline" : "You Know, for Search"
}

Vagrant內存不足報錯

[vagrant@localhost elasticsearch-5.6.8]$ ./bin/elasticsearch
    OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
    OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x0000000085330000, 2060255232, 0) failed; error="Cannot allocate memory" (errno=12)
    #
    # There is insufficient memory for the Java Runtime Environment to continue.
    # Native memory allocation (mmap) failed to map 2060255232 bytes for committing reserved memory.
    # An error report file with more information is saved as:
    # /vagrant_data/elasticsearch-5.6.8/hs_err_pid22178.log
[vagrant@localhost elasticsearch-5.6.8]$ free -m
                  total        used        free      shared  buff/cache   available
    Mem:            488         101          88           3         297         340
    Swap:          1535           1        1534

解決方法：

打開Vagrantfile

添加如下信息：

config.vm.provider "virtualbox" do |v|
v.memory = 2048
v.cpus = 2
end

重啟Vagrant vagrant reload

ElasticSearch 啟動報錯

   ERROR: [2] bootstrap checks failed
   [1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
   [2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

解決方法：

sudo vim /etc/security/limits.conf
# 添加如下信息:
# [當前用戶名] hard nofile 65536
# [當前用戶名] soft nofile 65536
# 保存退出
*******************************************************************
sysctl -w vm.max_map_count=655360
sysctl -a | grep "vm.max_map_count"

version: "3"
services:
    php_pc:
        image: php:7.2-cli
        container_name: pcsoft_php
        ports :
            - "9000:9000"
        volumes:
            - ./phpcli:/var/www/html/
    db_pc:
        image: mysql:5.7
        container_name: pcsoft_db
        volumes:
            - ./dbdata:/var/lib/mysql/
        ports:
            - "3306:3306"
        environment:
            MYSQL_USER: root
            MYSQL_PASSWORD: root
            MYSQL_ROOT_PASSWORD: root
    elasticsearch_soft:
        image: registry.cn-hangzhou.aliyuncs.com/amor/elastic:6.2.3
        container_name: es_pc_soft
        environment:
            - cluster.name=docker-cluster
            - bootstrap.memory_lock=true
            - xpack.security.enabled=false
            - "ES_JAVA_OPTS=-Xms2g -Xmx2g"
        ulimits:
            memlock:
                soft: -1
                hard: -1
        volumes:
            - ./docker_es/esdata_soft:/usr/share/elasticsearch/data
        ports:
            - 9200:9200
    elasticsearch_game:
        image: registry.cn-hangzhou.aliyuncs.com/amor/elastic:6.2.3
        container_name: es_pc_game
        environment:
            - cluster.name=docker-cluster
            - bootstrap.memory_lock=true
            - xpack.security.enabled=false
            - "ES_JAVA_OPTS=-Xms2g -Xmx2g"
            - "discovery.zen.ping.unicast.hosts=es_pc_soft"
        ulimits:
            memlock:
                soft: -1
                hard: -1
        volumes:
            - ./docker_es/esdata_game:/usr/share/elasticsearch/data
    kibana:
        image: registry.cn-hangzhou.aliyuncs.com/amor/kibana:6.2.3
        container_name: es_pc_kibana
        environment:
            SERVER_NAME: kibana.pc_amor.com
            ELASTICSEARCH_URL: http://elasticsearch_soft:9200
            XPACK_SECURITY_ENABLED: "false"

vm.max_map_count 報錯

grep vm.max_map_count /etc/sysctl.conf
# 如果找不到，則在該文件中添加 vm.max_map_count=262144 然后執行 sysctl -p
# 臨時改變輕執行 
sysctl -w vm.max_map_count=262144

不能以root權限運行問題

請檢查Elasticsearch掛載的目錄是否是root用戶創建的

Kibana鏈接問題

直接通過docker-compose server name鏈接即可

kibana無法登陸問題

# 添加以下選項：
XPACK_SECURITY_ENABLED: "false"