#Build Image
sudo vim Dockerfile
加入以下內容
FROM alpine:latest ADD etcd /usr/local/bin/ ADD etcdctl /usr/local/bin/ RUN mkdir -p /var/etcd/ RUN mkdir -p /var/lib/etcd/ # Alpine Linux doesn't use pam, which means that there is no /etc/nsswitch.conf, # but Golang relies on /etc/nsswitch.conf to check the order of DNS resolving # (see https://github.com/golang/go/commit/9dee7771f561cf6aee081c0af6658cc81fac3918) # To fix this we just create /etc/nsswitch.conf and add the following line: RUN echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' >> /etc/nsswitch.conf EXPOSE 2379 2380 # Define default command. CMD ["/usr/local/bin/etcd"]
下載etcd Releases
wget https://github.com/etcd-io/etcd/releases/download/v3.3.10/etcd-v3.3.10-linux-amd64.tar.gz
解tar後將etcd,etcdctl跟Dockerfile放在同一路徑下
在此路徑下執行Build Image
docker build -t etcd .
查看是否images buile完
docker images
#創建docker cluster
node1 IP : 172.16.133.34 node2 IP : 172.16.133.35 node3 IP : 172.16.133.36
三台分別的docker run腳本為以下
node 1
#!/bin/bash docker rm -f etcd0 docker run -d \ -p 2380:2380 \ -p 2379:2379 \ --name etcd0 etcd /usr/local/bin/etcd \ -name etcd0 \ -advertise-client-urls http://172.16.133.34:2379 \ -listen-client-urls http://0.0.0.0:2379 \ -initial-advertise-peer-urls http://172.16.133.34:2380 \ -listen-peer-urls http://0.0.0.0:2380 \ -initial-cluster-token etcd-cluster-1 \ -initial-cluster "etcd0=http://172.16.133.34:2380,etcd1=http://172.16.133.35:2380,etcd2=http://172.16.133.36:2380" \ -initial-cluster-state new
node 2
#!/bin/bash docker rm -f etcd1 docker run -d \ -p 2380:2380 \ -p 2379:2379 \ --name etcd1 etcd /usr/local/bin/etcd \ -name etcd1 \ -advertise-client-urls http://172.16.133.35:2379 \ -listen-client-urls http://0.0.0.0:2379 \ -initial-advertise-peer-urls http://172.16.133.35:2380 \ -listen-peer-urls http://0.0.0.0:2380 \ -initial-cluster-token etcd-cluster-1 \ -initial-cluster "etcd0=http://172.16.133.34:2380,etcd1=http://172.16.133.35:2380,etcd2=http://172.16.133.36:2380" \ -initial-cluster-state new
node 3
#!/bin/bash docker rm -f etcd2 docker run -d \ -p 2380:2380 \ -p 2379:2379 \ --name etcd2 etcd /usr/local/bin/etcd \ -name etcd2 \ -advertise-client-urls http://172.16.133.36:2379 \ -listen-client-urls http://0.0.0.0:2379 \ -initial-advertise-peer-urls http://172.16.133.36:2380 \ -listen-peer-urls http://0.0.0.0:2380 \ -initial-cluster-token etcd-cluster-1 \ -initial-cluster "etcd0=http://172.16.133.34:2380,etcd1=http://172.16.133.35:2380,etcd2=http://172.16.133.36:2380" \ -initial-cluster-state new
#Cluster 驗證
驗證Cluster members，在Cluster中查詢member應該是要一樣的
curl -L http://172.16.133.34:2379/v2/members
在某台node中推送數據，在其他台應該也要能查詢到
推送數據
curl -L http://172.16.133.34:2379/v2/keys/message -XPUT -d value="Hello RC"
查詢數據
curl -L http://172.16.133.34:2379/v2/keys/message
metrics連結
http://172.16.133.34:2379/metrics