k8s 安裝 + docker

 

Docker18.06.1-ce安裝(RHEL7)後啓動失敗, 緣由(xfsprogs版本太低)

Sep 18 10:20:54 iZn7mhh83qcz712ozfi0jpZ dockerd[9383]: time="2018-09-18T10:20:54.005950166+08:00" level=info msg="pickfirstBalancer: HandleSubConnStateChange: 0xc420421160, READY" module=grpc
Sep 18 10:20:54 iZn7mhh83qcz712ozfi0jpZ dockerd[9383]: time="2018-09-18T10:20:54.013755489+08:00" level=warning msg="Usage of loopback devices is strongly discouraged for production use. Please use `--storage-opt
Sep 18 10:20:54 iZn7mhh83qcz712ozfi0jpZ systemd-udevd[9295]: inotify_add_watch(7, /dev/dm-3, 10) failed: No such file or directory
Sep 18 10:20:54 iZn7mhh83qcz712ozfi0jpZ dockerd[9383]: time="2018-09-18T10:20:54.253238383+08:00" level=info msg="Creating filesystem xfs on device docker-253:1-1064453-base, mkfs args: [-m crc=0,finobt=0 /dev/ma
Sep 18 10:20:54 iZn7mhh83qcz712ozfi0jpZ dockerd[9383]: time="2018-09-18T10:20:54.254023042+08:00" level=info msg="Error while creating filesystem xfs on device docker-253:1-1064453-base: exit status 1" storage-dr
Sep 18 10:20:54 iZn7mhh83qcz712ozfi0jpZ dockerd[9383]: time="2018-09-18T10:20:54.254050362+08:00" level=error msg="[graphdriver] prior storage driver devicemapper failed: exit status 1"
Sep 18 10:20:54 iZn7mhh83qcz712ozfi0jpZ dockerd[9383]: Error starting daemon: error initializing graphdriver: exit status 1
Sep 18 10:20:54 iZn7mhh83qcz712ozfi0jpZ systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Sep 18 10:20:54 iZn7mhh83qcz712ozfi0jpZ systemd[1]: Failed to start Docker Application Container Engine.

1 2 INFO[2018-09-15T10:47:40.220046362+08:00] Creating filesystem xfs on device docker-253:4-17133027-base, mkfs args: [-m crc=0,finobt=0 /dev/mapper/docker-253:4-17133027-base]  storage-driver=devicemapper

解決辦法

yum install xfsprogs

安裝

wget https://storage.googleapis.com/kubernetes-release/release/v1.8.15/kubernetes-server-linux-amd64.tar.gz

wget https://storage.googleapis.com/kubernetes-release/release/v1.8.15/kubernetes-node-linux-amd64.tar.gz

 

UI界面

kubectl create -f kubernetes-dashboard.yaml

刪除

kubectl delete -f kubernetes-dashboard.yaml

查看狀態

kubectl get pods

kubectl get ns

kubectl get pods -n kube-system

kubectl describe pod kubernetes-dashboard-74cbf9fffc-69p4v -n kube-system

查看全部服務

kubectl get services --all-namespace

查看端口

kubectl get svc -n kube-system

docker-registry

vi /usr/lib/systemd/system/docker.service

docker pull hub.c.163.com/library/registry:latest
docker tag 0bb8b1006103 registry
docker images
docker tag 751f286bc25e registry

加刪除權限
docker run -d -p 5000:5000 -v /opt/registry:/var/lib/registry -e "REGISTRY_STORAGE_DELETE_ENABLED=true" registry

運行鏡像

docker run -t -i wangwei/tomcat8-web /bin/bash

 

1.中止全部的container，這樣纔可以刪除其中的images：

docker stop $(docker ps -a -q)

若是想要刪除全部container的話再加一個指令：

docker rm $(docker ps -a -q)

2.查看當前有些什麼images

docker images

3.刪除images，經過image的id來指定刪除誰

docker rmi <image id>

想要刪除untagged images，也就是那些id爲<None>的image的話能夠用

docker rmi $(docker images | grep "^<none>" | awk "{print $3}")

要刪除所有image的話

docker rmi $(docker images -q)

鏡像修改

docker run -t -i wangwei/tomcat8-web /bin/bash

docker commit -m "edit tomcat" -a "wangwei" 867264b79438 172.16.22.61:5000/wangwei/tomcat8-web:v1

docker push 172.16.22.61:5000/wangwei/tomcat8-web

查看父image

docker image inspect --format='{{.RepoTags}} {{.Id}} {{.Parent}}' $(docker image ls -q --filter since=xxxxxx)

docker commit了一個鏡像以後想刪除舊的鏡像，出現如下報錯

Error response from daemon: conflict: unable to delete 6f8214d56bfc (cannot be forced) - image has dependent child images

解決思路：

docker save保存容器

docker images

docker save REPOSITORY > XX.tar

刪除鏡像容器

docker ps -a

docker rm CONTAINER ID

docker images

docker rmi IMAGE ID

最後再導入回去

docker load < XX.tar