Docker 部署 Etcd 集群
拉取镜像
选择一个镜像拉取
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docker pull gcr.io/etcd-development/etcd:v3.5.0
docker pull quay.io/coreos/etcd:v3.5.0
docker pull bitnami/etcd:latest
docker pull k8s.gcr.io/etcd:3.4.13-0
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运行容器
使用gcr.io/etcd-development/etcd:v3.5.0镜像启动容器
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rm -rf /tmp/etcd-data.tmp && mkdir -p /tmp/etcd-data.tmp && \
docker rmi gcr.io/etcd-development/etcd:v3.5.0 || true && \
docker run \
-p 2379:2379 \
-p 2380:2380 \
--mount type=bind,source=/tmp/etcd-data.tmp,destination=/etcd-data \
--name etcd-gcr-v3.5.0 \
gcr.io/etcd-development/etcd:v3.5.0 \
/usr/local/bin/etcd \
--name s1 \
--data-dir /etcd-data \
--listen-client-urls http://0.0.0.0:2379 \
--advertise-client-urls http://0.0.0.0:2379 \
--listen-peer-urls http://0.0.0.0:2380 \
--initial-advertise-peer-urls http://0.0.0.0:2380 \
--initial-cluster s1=http://0.0.0.0:2380 \
--initial-cluster-token tkn \
--initial-cluster-state new \
--log-level info \
--logger zap \
--log-outputs stderr
# 进入容器执行指令
docker exec etcd-gcr-v3.5.0 /bin/sh -c "/usr/local/bin/etcd --version"
docker exec etcd-gcr-v3.5.0 /bin/sh -c "/usr/local/bin/etcdctl version"
docker exec etcd-gcr-v3.5.0 /bin/sh -c "/usr/local/bin/etcdctl endpoint health"
docker exec etcd-gcr-v3.5.0 /bin/sh -c "/usr/local/bin/etcdctl put foo bar"
docker exec etcd-gcr-v3.5.0 /bin/sh -c "/usr/local/bin/etcdctl get foo"
docker exec etcd-gcr-v3.5.0 /bin/sh -c "/usr/local/bin/etcdutl version"
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使用bitnami/etcd:latest镜像启动容器
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# Create a network
$ docker network create app-tier --driver bridge
# Launch the etcd server instance
$ docker run -d --name etcd-server \
--network app-tier \
--publish 2379:2379 \
--publish 2380:2380 \
--env ALLOW_NONE_AUTHENTICATION=yes \
--env ETCD_ADVERTISE_CLIENT_URLS=http://etcd-server:2379 \
bitnami/etcd:latest
# Launch your etcd client instance
$ docker run -it --rm \
--network app-tier \
--env ALLOW_NONE_AUTHENTICATION=yes \
bitnami/etcd:latest etcdctl --endpoints http://etcd-server:2379 put /message Hello
etcd 07:54:56.33
etcd 07:54:56.33 Welcome to the Bitnami etcd container
etcd 07:54:56.34 Subscribe to project updates by watching https://github.com/bitnami/bitnami-docker-etcd
etcd 07:54:56.34 Submit issues and feature requests at https://github.com/bitnami/bitnami-docker-etcd/issues
etcd 07:54:56.34
OK
$ docker run -it --rm \
--network app-tier \
--env ALLOW_NONE_AUTHENTICATION=yes \
bitnami/etcd:latest etcdctl --endpoints http://etcd-server:2379 get /message
etcd 07:55:08.47
etcd 07:55:08.47 Welcome to the Bitnami etcd container
etcd 07:55:08.48 Subscribe to project updates by watching https://github.com/bitnami/bitnami-docker-etcd
etcd 07:55:08.48 Submit issues and feature requests at https://github.com/bitnami/bitnami-docker-etcd/issues
etcd 07:55:08.48
/message
Hello
# stop the etcd server
$ docker stop etcd-server
$ docker rm etcd-server
$ docker network rm app-tier
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创建etcd集群
创建myapp/docker-compose.yaml文件
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version: '2'
services:
etcd1:
image: bitnami/etcd:latest
environment:
- ALLOW_NONE_AUTHENTICATION=yes
- ETCD_NAME=etcd1
- ETCD_INITIAL_ADVERTISE_PEER_URLS=http://etcd1:2380
- ETCD_LISTEN_PEER_URLS=http://0.0.0.0:2380
- ETCD_LISTEN_CLIENT_URLS=http://0.0.0.0:2379
- ETCD_ADVERTISE_CLIENT_URLS=http://etcd1:2379
- ETCD_INITIAL_CLUSTER_TOKEN=etcd-cluster
- ETCD_INITIAL_CLUSTER=etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380
- ETCD_INITIAL_CLUSTER_STATE=new
etcd2:
image: bitnami/etcd:latest
environment:
- ALLOW_NONE_AUTHENTICATION=yes
- ETCD_NAME=etcd2
- ETCD_INITIAL_ADVERTISE_PEER_URLS=http://etcd2:2380
- ETCD_LISTEN_PEER_URLS=http://0.0.0.0:2380
- ETCD_LISTEN_CLIENT_URLS=http://0.0.0.0:2379
- ETCD_ADVERTISE_CLIENT_URLS=http://etcd2:2379
- ETCD_INITIAL_CLUSTER_TOKEN=etcd-cluster
- ETCD_INITIAL_CLUSTER=etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380
- ETCD_INITIAL_CLUSTER_STATE=new
etcd3:
image: bitnami/etcd:latest
environment:
- ALLOW_NONE_AUTHENTICATION=yes
- ETCD_NAME=etcd3
- ETCD_INITIAL_ADVERTISE_PEER_URLS=http://etcd3:2380
- ETCD_LISTEN_PEER_URLS=http://0.0.0.0:2380
- ETCD_LISTEN_CLIENT_URLS=http://0.0.0.0:2379
- ETCD_ADVERTISE_CLIENT_URLS=http://etcd3:2379
- ETCD_INITIAL_CLUSTER_TOKEN=etcd-cluster
- ETCD_INITIAL_CLUSTER=etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380
- ETCD_INITIAL_CLUSTER_STATE=new
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启动etcd集群
在docker-compose.yaml目录下使用docker-compose up命令创建集群
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> docker-compose -f docker-compose.yaml up -d
Creating network "myapp_default" with the default driver
Creating myapp_etcd1_1 ... done
Creating myapp_etcd3_1 ... done
Creating myapp_etcd2_1 ... done
> docker-compose ps
Name Command State Ports
---------------------------------------------------------------------------
myapp_etcd1_1 /opt/bitnami/scripts/etcd/ ... Up 2379/tcp, 2380/tcp
myapp_etcd2_1 /opt/bitnami/scripts/etcd/ ... Up 2379/tcp, 2380/tcp
myapp_etcd3_1 /opt/bitnami/scripts/etcd/ ... Up 2379/tcp, 2380/tcp
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停止etcd集群
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> docker-compose down
Stopping myapp_etcd2_1 ... done
Stopping myapp_etcd3_1 ... done
Stopping myapp_etcd1_1 ... done
Removing myapp_etcd2_1 ... done
Removing myapp_etcd3_1 ... done
Removing myapp_etcd1_1 ... done
Removing network myapp_default
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使用quay.io/coreos/etcd:v3.5.0镜像创建
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version: "3"
services:
node1:
image: quay.io/coreos/etcd
volumes:
- /var/local/etcd-data/node1-data:/etcd-data
expose:
- 2379
- 2380
ports:
- "22379:2379"
- "22380:2380"
networks:
cluster_net:
ipv4_address: 172.16.238.100
environment:
- ETCDCTL_API=3
command:
- /usr/local/bin/etcd
- --data-dir=/etcd-data
- --name
- node1
- --initial-advertise-peer-urls
- http://172.16.238.100:2380
- --listen-peer-urls
- http://0.0.0.0:2380
- --advertise-client-urls
- http://172.16.238.100:2379
- --listen-client-urls
- http://0.0.0.0:2379
- --initial-cluster
- node1=http://172.16.238.100:2380,node2=http://172.16.238.101:2380,node3=http://172.16.238.102:2380
- --initial-cluster-state
- new
- --initial-cluster-token
- docker-etcd
privileged: true
node2:
image: quay.io/coreos/etcd
volumes:
- /var/local/etcd-data/node2-data:/etcd-data
networks:
cluster_net:
ipv4_address: 172.16.238.101
environment:
- ETCDCTL_API=3
expose:
- 2379
- 2380
ports:
- "22381:2379"
- "22382:2380"
command:
- /usr/local/bin/etcd
- --data-dir=/etcd-data
- --name
- node2
- --initial-advertise-peer-urls
- http://172.16.238.101:2380
- --listen-peer-urls
- http://0.0.0.0:2380
- --advertise-client-urls
- http://172.16.238.101:2379
- --listen-client-urls
- http://0.0.0.0:2379
- --initial-cluster
- node1=http://172.16.238.100:2380,node2=http://172.16.238.101:2380,node3=http://172.16.238.102:2380
- --initial-cluster-state
- new
- --initial-cluster-token
- docker-etcd
privileged: true
node3:
image: quay.io/coreos/etcd
volumes:
- /var/local/etcd-data/node3-data:/etcd-data
networks:
cluster_net:
ipv4_address: 172.16.238.102
environment:
- ETCDCTL_API=3
expose:
- 2379
- 2380
ports:
- "22383:2379"
- "22384:2380"
command:
- /usr/local/bin/etcd
- --data-dir=/etcd-data
- --name
- node3
- --initial-advertise-peer-urls
- http://172.16.238.102:2380
- --listen-peer-urls
- http://0.0.0.0:2380
- --advertise-client-urls
- http://172.16.238.102:2379
- --listen-client-urls
- http://0.0.0.0:2379
- --initial-cluster
- node1=http://172.16.238.100:2380,node2=http://172.16.238.101:2380,node3=http://172.16.238.102:2380
- --initial-cluster-state
- new
- --initial-cluster-token
- docker-etcd
privileged: true
volumes:
node1-data:
node2-data:
node3-data:
networks:
cluster_net:
driver: bridge
ipam:
driver: default
config:
-
subnet: 172.16.238.0/24
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启动etcd集群
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> docker-compose -f docker-compose.yml -p etcd up -d
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参考