20201117 docker swarm (一)
課堂資訊
新增虛擬機
設定虛擬機 hostname
hostnamectl set-hostname [虛擬機名稱]
bash
ifconfig
vim /etc/hosts
192.168.8.129 vm1
192.168.8.130 vm2
192.168.8.131 vm3

Docker Swarm



課堂練習
Docker Swarm
check firewall
systemctl status firewalld
getenforce
初始化 docker swarm
docker swarm init --advertise-addr 192.168.8.129

docker node ls
docker swarm join-token manager
執行時會顯示 token
docker swarm join --token SWMTKN-1-3yzvicajz4c2kyohfzr8zpzuu7jw17jtxz2wf7k2d12nwvq4av-96ni9b32xo6ngxyscud232nqo 192.168.8.129:2377
將vm2
promote 為 manager
docker node promote vm2

離開 swarm
docker swarm leave -f
Update a node
docker node update --availability drain vm1
docker pull dockersamples/visualizer

docker run -itd -p 8888:8080 -e HOST=192.168.8.129 -e PORT=8080 -v /var/run/docker.sock:/var/run/docker.sock --name visualizer dockersamples/visualizer


部署Web服務器服務
docker service create --name myweb -p 8880:80 httpd
docker service ls



兩個容器之間擴展Web服務器服務
docker service scale myweb=5


docker service scale myweb=3

docker node update --availability active vm1
docker service scale myweb=5


docker service scale myweb=1
docker service ps myweb

docker network ls
docker network inspect [ingress_NetworkID]

docker ps
docker inspect [httpd_容器ID]

docker service ls
docker service ps myweb
移除 service
docker service rm myweb
docker service ls


docker service create --name myweb httpd
更新 service
docker service update --publish-add [8880:80] [myweb]

docker service inspect [serviceID]
查看 service 的 log
docker service logs [serviceID]

docker service logs -f [serviceID]

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