docker如何安装Elasticsearch7.6集群并设置密码

小编这次要给大家分享的是docker如何安装Elasticsearch7.6集群并设置密码，文章内容丰富，感兴趣的小伙伴可以来了解一下，希望大家阅读完这篇文章之后能够有所收获。

Elasticsearch从6.8开始， 允许免费用户使用X-Pack的安全功能， 以前安装es都是裸奔。接下来记录配置安全认证的方法。

为了简化物理安装过程，我们将使用docker安装我们的服务。

一些基础配置

es需要修改linux的一些参数。

设置vm.max_map_count=262144

sudo vim /etc/sysctl.confvm.max_map_count=262144

不重启， 直接生效当前的命令

sysctl -w vm.max_map_count=262144

es的data和logs目录需要给1000的用户授权， 我们假设安装3个实力的es集群，先创建对应的数据存储文件

mkdir -p es01/datamkdir -p es01/logsmkdir -p es02/datamkdir -p es02/logsmkdir -p es03/datamkdir -p es03/logs## es的用户id为1000，这里暂且授权给所有人好了sudo chmod 777 es* -R

关于版本和docker镜像

Elasticsearch分几种licenses，其中Open Source和Basic是免费的， 而在6.8之后安全功能才开始集成在es的Basic授权上。

Basic对应docker镜像为

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

同时dockerhub同步为elasticsearch. 我们直接拉取elasticsearch:7.6.2就好。

开始

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

首先，创建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:   - elasticnetworks: elastic:  driver: bridge

关于elasticsearch.yml

内容如下

network.host: 0.0.0.0xpack.security.enabled: truexpack.security.transport.ssl.enabled: truexpack.security.transport.ssl.keystore.type: PKCS12xpack.security.transport.ssl.verification_mode: certificatexpack.security.transport.ssl.keystore.path: elastic-certificates.p12xpack.security.transport.ssl.truststore.path: elastic-certificates.p12xpack.security.transport.ssl.truststore.type: PKCS12xpack.security.audit.enabled: true

• network.host 设置允许其他ip访问，解除ip绑定
• xpack.security 则是安全相关配置，其中ssl的证书需要自己生成

关于证书elastic-certificates.p12

es提供了生成证书的工具elasticsearch-certutil，我们可以在docker实例中生成它，然后复制出来，后面统一使用。

首先运行es实例

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

进入实例内部

sudo docker exec -it es /bin/bash

生成ca: elastic-stack-ca.p12

[root@25dee1848942 elasticsearch]# ./bin/elasticsearch-certutil caThis tool assists you in the generation of X.509 certificates and certificatesigning 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 usedto sign certificate when running in 'cert' mode.Use the 'ca-dn' option if you wish to configure the 'distinguished name'of the certificate authorityBy default the 'ca' mode produces a single PKCS#12 output file which holds:  * The CA certificate  * The CA's private keyIf you elect to generate PEM format certificates (the -pem option), then the output willbe a zip file containing individual files for the CA certificate and private keyPlease 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.p12This tool assists you in the generation of X.509 certificates and certificatesigning requests for use with SSL/TLS in the Elastic stack.The 'cert' mode generates X.509 certificate and private keys.

这个生成elastic-certificates.p12 就是我们需要使用的。

复制出证书, ctrl+d退出容器内部

sudo docker cp es:/usr/share/elasticsearch/elastic-certificates.p12 .# 关闭这个容器sudo docker kill essudo docker rm es

如此获取了证书。

生成密码

我们首先要启动es集群，去里面生成密码。

sudo docker-compose up

然后进入其中一台

sudo docker exec -it es01 /bin/bash

生成密码用auto， 自己设置用 interactive

[root@cfeeab4bb0eb elasticsearch]# ./bin/elasticsearch-setup-passwords -hSets the passwords for reserved usersCommands--------auto - Uses randomly generated passwordsinteractive - Uses passwords entered by a userNon-option arguments:command       Option       Description    ------       -----------    -E  Configure a setting-h, --help     Show help     -s, --silent    Show minimal output-v, --verbose   Show verbose output[root@cfeeab4bb0eb elasticsearch]# ./bin/elasticsearch-setup-passwords autoInitiating 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]yChanged password for user apm_systemPASSWORD apm_system = YxVzeT9B2jEDUjYp66WsChanged password for user kibanaPASSWORD kibana = 8NnThbj0N02iDaTGhidUChanged password for user logstash_systemPASSWORD logstash_system = 9nIDGe7KSV8SQidSk8DjChanged password for user beats_systemPASSWORD beats_system = qeuVaf1VEALpJHfEUOjJChanged password for user remote_monitoring_userPASSWORD remote_monitoring_user = DtZCrCkVTZsinRn3tW3DChanged password for user elasticPASSWORD elastic = q5f2qNfUJQyvZPIz57MZ

使用密码

浏览器访问localhost:9200/9201/9202 需要输入账号

输入对应的elastic/password就好

浏览器访问localhost:5601

忘记密码

如果生成后忘记密码了怎么办， 可以进入机器去修改。

进入es的机器

sudo docker exec -it es01 /bin/bash

创建一个临时的超级用户RyanMiao

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

用这个用户去修改elastic的密码：

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

看完这篇关于docker如何安装Elasticsearch7.6集群并设置密码的文章，如果觉得文章内容写得不错的话，可以把它分享出去给更多人看到。