0. 前言
時隔多日,前段時間忙完一個無關緊要的項目後,又進入摸魚時間,沒有辦法,非互聯網公司,就是閒得蛋疼。又開始了自學之路。之前入門過Docker,而後又好久沒有看了,最近從新看了一下,推薦一下這我的的博客: https://www.cnblogs.com/CloudMan6 寫得不錯,深刻淺出。而後學着測試練習一下,部署Etcd服務看成練手。下面是利用Docker部署一個Etcd單機集羣測試環境。順便回顧一下Docker 基本操做。
因爲Docker更新特別快,須要較新的Linux內核版本,加上牆的緣由,有時候安裝Docker不是那麼順心,建議保持好心態。IRNG加油!
能夠參考
https://www.cnblogs.com/wunaozai/p/6936787.html
https://yq.aliyun.com/articles/110806?spm=5176.8351553.0.0.1cbe1991CFEveahtml
1 apt-get update 2 apt-get -y install apt-transport-https ca-certificates curl software-properties-common 3 curl -fsSL http://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add - 4 add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable" 5 apt-get -y update 6 apt-get -y install docker-ce
1. 下載Etcd
在這裏 https://github.com/etcd-io/etcd/releases 下載最新二進制包,用Go寫的,最近遇到的一些開源軟件,Go語言的出鏡率有點高啊,是否是有必要入坑了呀!node
2. 編寫Dockerfile
既然學了Docker,那麼就本身寫個Dockerfile來build一個Docker Image,如今etcd最新版是3.3.10linux
1 FROM alpine:3.2 2 RUN apk add --update ca-certificates openssl tar && \ 3 wget https://github.com/etcd-io/etcd/releases/download/v3.3.10/etcd-v3.3.10-linux-amd64.tar.gz && \ 4 tar -zxvf etcd-v3.3.10-linux-amd64.tar.gz && \ 5 mv etcd-v3.3.10-linux-amd64/etcd* /bin/ && \ 6 apk del --purge tar openssl && \ 7 rm -Rf etcd-v3.3.10-linux-amd64* /var/cache/apk/* 8 VOLUME /data 9 EXPOSE 2379 2380 10 CMD ["/bin/etcd"]
Docker構建git
docker build -t etcd:3.3 .
這裏順便介紹一下如何把Image推送到私有倉庫(阿里雲)github
1 docker login registry.cn-shenzhen.aliyuncs.com 2 docker tag etcd:3.3 registry.cn-shenzhen.aliyuncs.com/wunaozai/etcd:3.3 3 docker push registry.cn-shenzhen.aliyuncs.com/wunaozai/etcd:3.3 4 5 docker pull registry.cn-shenzhen.aliyuncs.com/wunaozai/etcd:3.3
3. 啓動docker
我這裏模擬啓動3個Etcd服務,以前須要建立虛擬網卡ubuntu
docker network create --driver bridge --subnet 172.22.16.0/24 --gateway 172.22.16.254 my_net2
建立etcd服務curl
1 docker run -d --name etcd-client-1 -p 2001:2379 -p 3001:2380 -v /root/workspace/docker/k8s/etcd/data1/:/data --network my_net2 --ip 172.22.16.1 etcd:3.3 \ 2 /bin/etcd \ 3 --data-dir=/data --name node1 \ 4 --initial-advertise-peer-urls http://172.22.16.1:2380 --listen-peer-urls http://0.0.0.0:2380 \ 5 --advertise-client-urls http://172.22.16.1:2379 --listen-client-urls http://172.22.16.1:2379,http://127.0.0.1:2379 \ 6 --initial-cluster-state new --initial-cluster-token docker-etcd \ 7 --initial-cluster node1=http://172.22.16.1:2380,node2=http://172.22.16.2:2380,node3=http://172.22.16.3:2380 8 9 docker run -d --name etcd-client-2 -p 2002:2379 -p 3002:2380 -v /root/workspace/docker/k8s/etcd/data2/:/data --network my_net2 --ip 172.22.16.2 etcd:3.3 \ 10 /bin/etcd \ 11 --data-dir=/data --name node2 \ 12 --initial-advertise-peer-urls http://172.22.16.2:2380 --listen-peer-urls http://0.0.0.0:2380 \ 13 --advertise-client-urls http://172.22.16.2:2379 --listen-client-urls http://172.22.16.2:2379,http://127.0.0.1:2379 \ 14 --initial-cluster-state new --initial-cluster-token docker-etcd \ 15 --initial-cluster node1=http://172.22.16.1:2380,node2=http://172.22.16.2:2380,node3=http://172.22.16.3:2380 16 17 docker run -d --name etcd-client-3 -p 2003:2379 -p 3003:2380 -v /root/workspace/docker/k8s/etcd/data3/:/data --network my_net2 --ip 172.22.16.3 etcd:3.3 \ 18 /bin/etcd \ 19 --data-dir=/data --name node3 \ 20 --initial-advertise-peer-urls http://172.22.16.3:2380 --listen-peer-urls http://0.0.0.0:2380 \ 21 --advertise-client-urls http://172.22.16.3:2379 --listen-client-urls http://172.22.16.3:2379,http://127.0.0.1:2379 \ 22 --initial-cluster-state new --initial-cluster-token docker-etcd \ 23 --initial-cluster node1=http://172.22.16.1:2380,node2=http://172.22.16.2:2380,node3=http://172.22.16.3:2380
docker ps -a 命令界面測試
weaveworks/scope 管理界面 安裝參考 https://github.com/weaveworks/scope ui
1 curl -L git.io/scope -o /usr/local/bin/scope 2 chmod a+x /usr/local/bin/scope 3 scope launch
4. 進入到etcd容器
docker exec -it etcd-client-1 /bin/sh etcdctl member list
5. API操做
咱們能夠對任意一個node節點進行讀寫,即便容器關閉,這些KV數據都保存在Host主機上的。
curl http://127.0.0.1:2001/v2/keys/hello -XPUT -d value="hello world" curl http://127.0.0.1:2003/v2/keys/hello
參考資料
https://github.com/etcd-io/etcd
https://www.cnblogs.com/CloudMan6
https://www.cnblogs.com/xishuai/p/docker-etcd.html
https://www.cnblogs.com/wunaozai/p/6936787.html
https://yq.aliyun.com/articles/110806?spm=5176.8351553.0.0.1cbe1991CFEvea
本文地址: https://www.cnblogs.com/wunaozai/p/9917488.html