1.Compose 简介
Compose 是用于定义和运行多容器 Docker 应用程序的工具。通过 Compose,您可以使用 YML 文件来配置应用程序需要的所有服务。然后,使用一个命令,就可以从 YML 文件配置中创建并启动所有服务。
Compose 使用的三个步骤:
- 使用 Dockerfile 定义应用程序的环境。
- 使用 docker-compose.yml 定义构成应用程序的服务,这样它们可以在隔离环境中一起运行。
- 最后,执行 docker-compose up 命令来启动并运行整个应用程序。
2.centos7安装docker-compose
首先下载Docker Compose
curl -L https://get.daocloud.io/docker/compose/releases/download/v2.14.2/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
将可执行权限应用于二进制文件:
sudo chmod +x /usr/local/bin/docker-compose
创建软链:
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
测试是否安装成功:
docker-compose version
3.Centos7环境设置:
- 设置max_map_count不然es启动报错
# 查看max_map_count的值,应该是65530
cat /proc/sys/vm/max_map_count
# 设置max_map_count的值
sysctl -w vm.max_map_count=262144
- 注意:centos7需要对外暴漏端口9200以及5601,具体操作请百度。
4.创建集群
4.1 不带密码的集群
- 开发环境自用的es不需要证书验证
- 创建一个干净的目录,然后进入该目录。
# es为创建的es用户,具体根据自己的来
cd /home/es
mkdir es_docker_compose
cd es_docker_compose
# 重点是创建下面两个文件
touch .env
touch docker-compose.yml
- .env文件中的内容
# kibana_system账号的密码 (至少六个字符),该账号仅用于一些kibana的内部设置,不能用来查询es
KIBANA_PASSWORD=abcdef
# es和kibana的版本
STACK_VERSION=8.5.0
# 集群名字
CLUSTER_NAME=docker-cluster
# es映射到宿主机的的端口
ES_PORT=9200
# kibana映射到宿主机的的端口
KIBANA_PORT=5601
# es容器的内存大小,请根据自己硬件情况调整(字节为单位,当前1G)
MEM_LIMIT=1073741824
# 命名空间,会体现在容器名的前缀上
COMPOSE_PROJECT_NAME=demo
- docker-compose.yaml文件内容。操作步骤其实为:1.启动操作 2.三个es集群一个kibana。
注意:docker-compose的版本号与第2步中安装的docker-compose版本号一致
# docker-compose的版本号
version: "2.14.2"
services:
es01:
image: elasticsearch:${STACK_VERSION}
volumes:
- esdata01:/usr/share/elasticsearch/data
ports:
- ${ES_PORT}:9200
environment:
- node.name=es01
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es02,es03
- bootstrap.memory_lock=true
- xpack.security.enabled=false
- xpack.security.http.ssl.enabled=false
- xpack.security.transport.ssl.enabled=false
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
es02:
depends_on:
- es01
image: elasticsearch:${STACK_VERSION}
volumes:
- esdata02:/usr/share/elasticsearch/data
environment:
- node.name=es02
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es01,es03
- bootstrap.memory_lock=true
- xpack.security.enabled=false
- xpack.security.http.ssl.enabled=false
- xpack.security.transport.ssl.enabled=false
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
es03:
depends_on:
- es02
image: elasticsearch:${STACK_VERSION}
volumes:
- esdata03:/usr/share/elasticsearch/data
environment:
- node.name=es03
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es01,es02
- bootstrap.memory_lock=true
- xpack.security.enabled=false
- xpack.security.http.ssl.enabled=false
- xpack.security.transport.ssl.enabled=false
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
kibana:
image: kibana:${STACK_VERSION}
volumes:
- kibanadata:/usr/share/kibana/data
ports:
- ${KIBANA_PORT}:5601
environment:
- SERVERNAME=kibana
- ELASTICSEARCH_HOSTS=http://es01:9200
- ELASTICSEARCH_USERNAME=kibana_system
- ELASTICSEARCH_PASSWORD=${KIBANA_PASSWORD}
mem_limit: ${MEM_LIMIT}
volumes:
esdata01:
driver: local
esdata02:
driver: local
esdata03:
driver: local
kibanadata:
driver: local
- 启动应用
在docker-compose.yaml与.env的目录下,执行命令。
# -d是后台运行
docker-compose up -d
输出:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
11663375288d elasticsearch:8.5.0 "/bin/tini -- /usr/l…" 4 minutes ago Up 4 minutes 9200/tcp, 9300/tcp demo_es03_1
ad6f0390b9cf elasticsearch:8.5.0 "/bin/tini -- /usr/l…" 4 minutes ago Up 4 minutes 9200/tcp, 9300/tcp demo_es02_1
5080709e5358 kibana:8.5.0 "/bin/tini -- /usr/l…" 4 minutes ago Up 4 minutes 0.0.0.0:5601->5601/tcp demo_kibana_1
4b1e576fbfd3 elasticsearch:8.5.0 "/bin/tini -- /usr/l…" 4 minutes ago Up 4 minutes 0.0.0.0:9200->9200/tcp, 9300/tcp demo_es01_1
验证成功
- 浏览器直接访问https://docker主机地址:9200/,注意是http。
- 进入后账号密码都是.env里的注释以及数据(请注意查看)
- 访问http://localhost:5601/,就是访问kibana。账号密码也在.env里。
4.2 带密码以及安全检查的集群(自签证书+账号密码)
- 创建一个干净的目录,然后进入该目录。
# es为创建的es用户,具体根据自己的来
cd /home/es
mkdir es_docker_compose
cd es_docker_compose
# 重点是创建下面两个文件
touch .env
touch docker-compose.yml
- .env文件中的内容
# elastic账号的密码 (至少六个字符)
ELASTIC_PASSWORD=123456
# kibana_system账号的密码 (至少六个字符),该账号仅用于一些kibana的内部设置,不能用来查询es
KIBANA_PASSWORD=abcdef
# es和kibana的版本
STACK_VERSION=8.5.0
# 集群名字
CLUSTER_NAME=docker-cluster
# x-pack安全设置,这里选择basic,基础设置,如果选择了trail,则会在30天后到期
LICENSE=basic
#LICENSE=trial
# es映射到宿主机的的端口
ES_PORT=9200
# kibana映射到宿主机的的端口
KIBANA_PORT=5601
# es容器的内存大小,请根据自己硬件情况调整(字节为单位,当前1G)
MEM_LIMIT=1073741824
# 命名空间,会体现在容器名的前缀上
COMPOSE_PROJECT_NAME=es
- docker-compose.yaml文件内容。操作步骤其实为:1.启动操作 2.三个es集群一个kibana。
注意:docker-compose的版本号与第2步中安装的docker-compose版本号一致
# docker-compose的版本号
version: "2.14.2"
services:
setup:
image: elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
user: "0"
command: >
bash -c '
if [ x${ELASTIC_PASSWORD} == x ]; then
echo "Set the ELASTIC_PASSWORD environment variable in the .env file";
exit 1;
elif [ x${KIBANA_PASSWORD} == x ]; then
echo "Set the KIBANA_PASSWORD environment variable in the .env file";
exit 1;
fi;
if [ ! -f config/certs/ca.zip ]; then
echo "Creating CA";
bin/elasticsearch-certutil ca --silent --pem -out config/certs/ca.zip;
unzip config/certs/ca.zip -d config/certs;
fi;
if [ ! -f config/certs/certs.zip ]; then
echo "Creating certs";
echo -ne \
"instances:\n"\
" - name: es01\n"\
" dns:\n"\
" - es01\n"\
" - localhost\n"\
" ip:\n"\
" - 127.0.0.1\n"\
" - name: es02\n"\
" dns:\n"\
" - es02\n"\
" - localhost\n"\
" ip:\n"\
" - 127.0.0.1\n"\
" - name: es03\n"\
" dns:\n"\
" - es03\n"\
" - localhost\n"\
" ip:\n"\
" - 127.0.0.1\n"\
> config/certs/instances.yml;
bin/elasticsearch-certutil cert --silent --pem -out config/certs/certs.zip --in config/certs/instances.yml --ca-cert config/certs/ca/ca.crt --ca-key config/certs/ca/ca.key;
unzip config/certs/certs.zip -d config/certs;
fi;
echo "Setting file permissions"
chown -R root:root config/certs;
find . -type d -exec chmod 750 \{\} \;;
find . -type f -exec chmod 640 \{\} \;;
echo "Waiting for Elasticsearch availability";
until curl -s --cacert config/certs/ca/ca.crt https://es01:9200 | grep -q "missing authentication credentials"; do sleep 30; done;
echo "Setting kibana_system password";
until curl -s -X POST --cacert config/certs/ca/ca.crt -u elastic:${ELASTIC_PASSWORD} -H "Content-Type: application/json" https://es01:9200/_security/user/kibana_system/_password -d "{\"password\":\"${KIBANA_PASSWORD}\"}" | grep -q "^{}"; do sleep 10; done;
echo "All done!";
'
healthcheck:
test: ["CMD-SHELL", "[ -f config/certs/es01/es01.crt ]"]
interval: 1s
timeout: 5s
retries: 120
es01:
depends_on:
setup:
condition: service_healthy
image: elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
- esdata01:/usr/share/elasticsearch/data
ports:
- ${ES_PORT}:9200
environment:
- node.name=es01
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es02,es03
- ELASTIC_PASSWORD=${ELASTIC_PASSWORD}
- bootstrap.memory_lock=true
- xpack.security.enabled=true
- xpack.security.http.ssl.enabled=true
- xpack.security.http.ssl.key=certs/es01/es01.key
- xpack.security.http.ssl.certificate=certs/es01/es01.crt
- xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.http.ssl.verification_mode=certificate
- xpack.security.transport.ssl.enabled=true
- xpack.security.transport.ssl.key=certs/es01/es01.key
- xpack.security.transport.ssl.certificate=certs/es01/es01.crt
- xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.verification_mode=certificate
- xpack.license.self_generated.type=${LICENSE}
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test:
[
"CMD-SHELL",
"curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
]
interval: 10s
timeout: 10s
retries: 120
es02:
depends_on:
- es01
image: elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
- esdata02:/usr/share/elasticsearch/data
environment:
- node.name=es02
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es01,es03
- bootstrap.memory_lock=true
- xpack.security.enabled=true
- xpack.security.http.ssl.enabled=true
- xpack.security.http.ssl.key=certs/es02/es02.key
- xpack.security.http.ssl.certificate=certs/es02/es02.crt
- xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.http.ssl.verification_mode=certificate
- xpack.security.transport.ssl.enabled=true
- xpack.security.transport.ssl.key=certs/es02/es02.key
- xpack.security.transport.ssl.certificate=certs/es02/es02.crt
- xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.verification_mode=certificate
- xpack.license.self_generated.type=${LICENSE}
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test:
[
"CMD-SHELL",
"curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
]
interval: 10s
timeout: 10s
retries: 120
es03:
depends_on:
- es02
image: elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
- esdata03:/usr/share/elasticsearch/data
environment:
- node.name=es03
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es01,es02
- bootstrap.memory_lock=true
- xpack.security.enabled=true
- xpack.security.http.ssl.enabled=true
- xpack.security.http.ssl.key=certs/es03/es03.key
- xpack.security.http.ssl.certificate=certs/es03/es03.crt
- xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.http.ssl.verification_mode=certificate
- xpack.security.transport.ssl.enabled=true
- xpack.security.transport.ssl.key=certs/es03/es03.key
- xpack.security.transport.ssl.certificate=certs/es03/es03.crt
- xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.verification_mode=certificate
- xpack.license.self_generated.type=${LICENSE}
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test:
[
"CMD-SHELL",
"curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
]
interval: 10s
timeout: 10s
retries: 120
kibana:
depends_on:
es01:
condition: service_healthy
es02:
condition: service_healthy
es03:
condition: service_healthy
image: kibana:${STACK_VERSION}
volumes:
- certs:/usr/share/kibana/config/certs
- kibanadata:/usr/share/kibana/data
ports:
- ${KIBANA_PORT}:5601
environment:
- SERVERNAME=kibana
- ELASTICSEARCH_HOSTS=https://es01:9200
- ELASTICSEARCH_USERNAME=kibana_system
- ELASTICSEARCH_PASSWORD=${KIBANA_PASSWORD}
- ELASTICSEARCH_SSL_CERTIFICATEAUTHORITIES=config/certs/ca/ca.crt
mem_limit: ${MEM_LIMIT}
healthcheck:
test:
[
"CMD-SHELL",
"curl -s -I http://localhost:5601 | grep -q 'HTTP/1.1 302 Found'",
]
interval: 10s
timeout: 10s
retries: 120
volumes:
certs:
driver: local
esdata01:
driver: local
esdata02:
driver: local
esdata03:
driver: local
kibanadata:
driver: local
- 启动应用
在docker-compose.yaml与.env的目录下,执行命令。
# -d表示后台启动
docker-compose up -d
输出:
Creating network "demo_default" with the default driver
Pulling setup (elasticsearch:8.5.0)...
8.5.0: Pulling from library/elasticsearch
Digest: sha256:8c666cb1e76650306655b67644a01663f9c7a5422b2c51dd570524267f11ce3d
Status: Downloaded newer image for elasticsearch:8.5.0
Pulling kibana (kibana:8.5.0)...
8.5.0: Pulling from library/kibana
Digest: sha256:cf34801f36a2e79c834b3cdeb0a3463ff34b8d8588c3ccdd47212c4e0753f8a5
Status: Downloaded newer image for kibana:8.5.0
Creating demo_setup_1 ... done
Creating demo_es01_1 ... done
Creating demo_es02_1 ... done
Creating demo_es03_1 ... done
Creating demo_kibana_1 ... done
- 查看容器的状态,负责启动的setup容器已经退出,其他容器正常运行。
docker ps -a
输出:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c8ce010cddfc kibana:8.5.0 "/bin/tini -- /usr/l…" 20 minutes ago Up 20 minutes (healthy) 0.0.0.0:5601->5601/tcp demo_kibana_1
78662d44ae31 elasticsearch:8.5.0 "/bin/tini -- /usr/l…" 21 minutes ago Up 21 minutes (healthy) 9200/tcp, 9300/tcp demo_es03_1
7e96273872cb elasticsearch:8.5.0 "/bin/tini -- /usr/l…" 21 minutes ago Up 21 minutes (healthy) 9200/tcp, 9300/tcp demo_es02_1
8b8be1d645ba elasticsearch:8.5.0 "/bin/tini -- /usr/l…" 21 minutes ago Up 21 minutes (healthy) 0.0.0.0:9200->9200/tcp, 9300/tcp demo_es01_1
c48ffb724ca2 elasticsearch:8.5.0 "/bin/tini -- /usr/l…" 21 minutes ago Exited (0) 20 minutes ago demo_setup_1
- 查看setup容器日志,提示启动成功
docker logs demo_setup_1
输出:
Setting file permissions
Waiting for Elasticsearch availability
Setting kibana_system password
All done!
- 如果需要使用curl命令像ES发请求,必须将crt文件从容器中复制出来
docker cp demo_es01_1:/usr/share/elasticsearch/config/certs/es01/es01.crt .
验证成功
- 浏览器直接访问https://docker主机地址:9200/,注意是https。因为带证书。
- 进入后账号密码都是.env里的注释以及数据(请注意查看)
- 访问http://localhost:5601/,就是访问kibana。账号密码也在.env里。
5.清理环境
- 如果要删除es,执行docker-compose down就会删除容器,但是,此命令不会删除数据,下次执行docker-compose up -d后,新的es集群中会出现刚才创建的test001索引,并且数据也在。
- 这是因为docker-compose.yaml中使用了数据卷volume存储es集群的关键数据,这些输入被保存在宿主机的磁盘上
> docker volume ls
DRIVER VOLUME NAME
local demo_certs
local demo_esdata01
local demo_esdata02
local demo_esdata03
local demo_kibanadata
- 执行docker volume rm demo_certs demo_esdata01 demo_esdata02 demo_esdata03即可将它们彻底清除
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