docker如何安裝Elasticsearch7.6集群并設置密碼

發布時間：2020-07-20 10:05:35 來源：億速云閱讀：701 作者：小豬欄目：服務器

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Elasticsearch從6.8開始，允許免費用戶使用X-Pack的安全功能，以前安裝es都是裸奔。接下來記錄配置安全認證的方法。

為了簡化物理安裝過程，我們將使用docker安裝我們的服務。

一些基礎配置

es需要修改linux的一些參數。

設置vm.max_map_count=262144

sudo vim /etc/sysctl.conf
vm.max_map_count=262144

不重啟，直接生效當前的命令

sysctl -w vm.max_map_count=262144

es的data和logs目錄需要給1000的用戶授權，我們假設安裝3個實力的es集群，先創建對應的數據存儲文件

mkdir -p es01/data
mkdir -p es01/logs
mkdir -p es02/data
mkdir -p es02/logs
mkdir -p es03/data
mkdir -p es03/logs

## es的用戶id為1000，這里暫且授權給所有人好了
sudo chmod 777 es* -R

關于版本和docker鏡像

Elasticsearch分幾種licenses，其中Open Source和Basic是免費的，而在6.8之后安全功能才開始集成在es的Basic授權上。

docker如何安裝Elasticsearch7.6集群并設置密碼

Basic對應docker鏡像為

docker pull docker.elastic.co/elasticsearch/elasticsearch:7.6.2

同時dockerhub同步為elasticsearch. 我們直接拉取elasticsearch:7.6.2就好。

開始

安裝文件均放在GitHub： https://github.com/Ryan-Miao/docker-china-source/tree/master/docker-elasticsearch

首先，創建docker-compose.yml

version: '2.2'
services:
 es01:
  image: elasticsearch:7.6.2
  container_name: es01
  environment:
   - node.name=es01
   - cluster.name=es-docker-cluster
   - discovery.seed_hosts=es02,es03
   - cluster.initial_master_nodes=es01,es02,es03
   - bootstrap.memory_lock=true
   - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
  ulimits:
   memlock:
    soft: -1
    hard: -1
  volumes:
   - ./es01/data:/usr/share/elasticsearch/data
   - ./es01/logs:/usr/share/elasticsearch/logs
   - ./elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
   - ./elastic-certificates.p12:/usr/share/elasticsearch/config/elastic-certificates.p12
  ports:
   - 9200:9200
  networks:
   - elastic

 es02:
  image: elasticsearch:7.6.2
  container_name: es02
  environment:
   - node.name=es02
   - cluster.name=es-docker-cluster
   - discovery.seed_hosts=es01,es03
   - cluster.initial_master_nodes=es01,es02,es03
   - bootstrap.memory_lock=true
   - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
  ulimits:
   memlock:
    soft: -1
    hard: -1
  volumes:
   - ./es02/data:/usr/share/elasticsearch/data
   - ./es02/logs:/usr/share/elasticsearch/logs
   - ./elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
   - ./elastic-certificates.p12:/usr/share/elasticsearch/config/elastic-certificates.p12
  ports:
   - 9201:9200
  networks:
   - elastic

 es03:
  image: elasticsearch:7.6.2
  container_name: es03
  environment:
   - node.name=es03
   - cluster.name=es-docker-cluster
   - discovery.seed_hosts=es01,es02
   - cluster.initial_master_nodes=es01,es02,es03
   - bootstrap.memory_lock=true
   - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
  ulimits:
   memlock:
    soft: -1
    hard: -1
  volumes:
   - ./es03/data:/usr/share/elasticsearch/data
   - ./es03/logs:/usr/share/elasticsearch/logs
   - ./elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
   - ./elastic-certificates.p12:/usr/share/elasticsearch/config/elastic-certificates.p12
  ports:
   - 9202:9200
  networks:
   - elastic

 kib01:
  depends_on: 
   - es01
  image: kibana:7.6.2
  container_name: kib01
  ports:
   - 5601:5601
  environment:
   ELASTICSEARCH_URL: http://es01:9200
   ELASTICSEARCH_HOSTS: http://es01:9200
  volumes:
   - ./kibana.yml:/usr/share/kibana/config/kibana.yml
  networks:
   - elastic

networks:
 elastic:
  driver: bridge

關于elasticsearch.yml

內容如下

network.host: 0.0.0.0
xpack.security.enabled: true
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.keystore.type: PKCS12
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: elastic-certificates.p12
xpack.security.transport.ssl.truststore.path: elastic-certificates.p12
xpack.security.transport.ssl.truststore.type: PKCS12

xpack.security.audit.enabled: true

network.host 設置允許其他ip訪問，解除ip綁定
xpack.security 則是安全相關配置，其中ssl的證書需要自己生成

關于證書elastic-certificates.p12

es提供了生成證書的工具elasticsearch-certutil，我們可以在docker實例中生成它，然后復制出來，后面統一使用。

首先運行es實例

sudo docker run -dit --name=es elasticsearch:7.6.2 /bin/bash

進入實例內部

sudo docker exec -it es /bin/bash

生成ca: elastic-stack-ca.p12

[root@25dee1848942 elasticsearch]# ./bin/elasticsearch-certutil ca
This tool assists you in the generation of X.509 certificates and certificate
signing requests for use with SSL/TLS in the Elastic stack.

The 'ca' mode generates a new 'certificate authority'
This will create a new X.509 certificate and private key that can be used
to sign certificate when running in 'cert' mode.

Use the 'ca-dn' option if you wish to configure the 'distinguished name'
of the certificate authority

By default the 'ca' mode produces a single PKCS#12 output file which holds:
  * The CA certificate
  * The CA's private key

If you elect to generate PEM format certificates (the -pem option), then the output will
be a zip file containing individual files for the CA certificate and private key

Please enter the desired output file [elastic-stack-ca.p12]: 
Enter password for elastic-stack-ca.p12 :

再生成cert: elastic-certificates.p12

[root@25dee1848942 elasticsearch]# ./bin/elasticsearch-certutil cert --ca elastic-stack-ca.p12
This tool assists you in the generation of X.509 certificates and certificate
signing requests for use with SSL/TLS in the Elastic stack.

The 'cert' mode generates X.509 certificate and private keys.

這個生成elastic-certificates.p12 就是我們需要使用的。

復制出證書, ctrl+d退出容器內部

sudo docker cp es:/usr/share/elasticsearch/elastic-certificates.p12 .
# 關閉這個容器
sudo docker kill es
sudo docker rm es

如此獲取了證書。

生成密碼

我們首先要啟動es集群，去里面生成密碼。

sudo docker-compose up

然后進入其中一臺

sudo docker exec -it es01 /bin/bash

生成密碼用auto，自己設置用 interactive

[root@cfeeab4bb0eb elasticsearch]# ./bin/elasticsearch-setup-passwords -h
Sets the passwords for reserved users

Commands
--------
auto - Uses randomly generated passwords
interactive - Uses passwords entered by a user

Non-option arguments:
command       

Option       Description    
------       -----------    
-E <KeyValuePair> Configure a setting
-h, --help     Show help     
-s, --silent    Show minimal output
-v, --verbose   Show verbose output



[root@cfeeab4bb0eb elasticsearch]# ./bin/elasticsearch-setup-passwords auto
Initiating the setup of passwords for reserved users elastic,apm_system,kibana,logstash_system,beats_system,remote_monitoring_user.
The passwords will be randomly generated and printed to the console.
Please confirm that you would like to continue [y/N]y


Changed password for user apm_system
PASSWORD apm_system = YxVzeT9B2jEDUjYp66Ws

Changed password for user kibana
PASSWORD kibana = 8NnThbj0N02iDaTGhidU

Changed password for user logstash_system
PASSWORD logstash_system = 9nIDGe7KSV8SQidSk8Dj

Changed password for user beats_system
PASSWORD beats_system = qeuVaf1VEALpJHfEUOjJ

Changed password for user remote_monitoring_user
PASSWORD remote_monitoring_user = DtZCrCkVTZsinRn3tW3D

Changed password for user elastic
PASSWORD elastic = q5f2qNfUJQyvZPIz57MZ

使用密碼

瀏覽器訪問localhost:9200/9201/9202 需要輸入賬號

輸入對應的elastic/password就好

瀏覽器訪問localhost:5601

docker如何安裝Elasticsearch7.6集群并設置密碼

忘記密碼

如果生成后忘記密碼了怎么辦，可以進入機器去修改。

進入es的機器

sudo docker exec -it es01 /bin/bash

創建一個臨時的超級用戶RyanMiao

./bin/elasticsearch-users useradd ryan -r superuser
Enter new password: 
ERROR: Invalid password...passwords must be at least [6] characters long
[root@cfeeab4bb0eb elasticsearch]# ./bin/elasticsearch-users useradd ryan -r superuser
Enter new password: 
Retype new password:

用這個用戶去修改elastic的密碼：

curl -XPUT -u ryan:ryan123 http://localhost:9200/_xpack/security/user/elastic/_password -H "Content-Type: application/json" -d '
{
 "password": "q5f2qNfUJQyvZPIz57MZ"
}'

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