# 2022/11/08 Srcmesh Lesson ###### tags: `K8S Lession` https://hackmd.io/1hsfRIupReS65KFacDDzqQ ### Asciinema.org 操作demo - https://asciinema.org/a/Wsg3glksIOuYXIi84tUAAZvU5 ### Workshop Github - https://github.com/srcmesh-workshop/container-hands-on ### Github issue - homework reply - https://github.com/srcmesh-workshop/container-hands-on/issues ### SSH to GKE (k8s環境) ``` Account: ssh user-<name>@workshop.srcmesh.dev Password: srcmesh-123456789 web: http://workshop.srcmesh.dev:<port-number> ``` --- ### Create source code file - [Local] ./Dockerfile (expose要改成對應port號) FROM ubuntu:16.04 RUN apt update -y RUN apt install -y nginx COPY index.html /var/www/tutorial/ COPY demo.conf /etc/nginx/sites-enabled/ EXPOSE 80?? ENTRYPOINT ["nginx", "-g", "daemon off;"] - [Local] ./index.html Dockerfile會將目標COPY到 Container內Path -> /var/www/tutorial/index.html <!doctype html> <html> <head> <meta charset="utf-8"> <title>Hello, Nginx!</title> </head> <body> <h1>Hello, Nginx!</h1> <p>We have just configured our Nginx web server on Ubuntu Server!</p> </body> </html> - [Local] ./demo.conf Dockerfile會將目標COPY到 Container內Path -> /etc/nginx/sites-enabled/demo.conf server { listen 81; listen [::]:81; server_name example.ubuntu.com; root /var/www/tutorial; index index.html; location / { try_files $uri $uri/ =404; } } --- ### Docker command - 查看目前運行之容器清單 ``` docker ps -a ``` - 查看目前映像檔(image)清單 ``` docker images ``` - 建置image ``` docker build -t <image-name>:<tag> . ``` - 重新變更image名稱:tag ``` docker tag <target-image-name>:<tag> <rename-image>:<re-tag> ``` - 暫停目標運行中容器 ``` docker stop <container-name> or <container-id> ``` - 刪除容器清單之目標容器 ``` docker rm <container-name> or <container-id> ``` - 刪除目標image(建議用container-id刪除較準確) ``` docker rmi <image-name>:<tag> or <image-id> ``` - 運行容器 ``` docker run -d -p 80??:81 --name <container-name> <image-name>:<tag> -d: 背景運行 -p: expose port --name: 對該container取名 --rm: process過後直接刪除 ``` - 確認容器狀態 (可用來確認系統發生什麼問題) ``` docker logs -f <container-name> ``` ### Homework流程 ##### 本次作業主要為建置一變更過port之nginx image，並將該image push至dockerhub上。 Set : <image-name>:<tag> -> user-99-nginx:1.0.2 <rename-image>:<re-tag> -> user-99-kenny:1.0.2 <container-name> -> container-99-nginx <dockerhub-name> -> xxooxox 1. Create source code file. 於Local資料夾內建置前述三份檔案。 3. Build image ``` docker build -t <image-name>:<tag> . ex: docker build -t user-99-nginx:1.0.2 . ``` 3. Create container and check container status is running. ``` docker run -d -p 80??:81 --name <container-name> <image-name>:<tag> ex: docker run -d -p 8099:81 --name container-99-nginx user-99-nginx:1.0.2 ``` 確認container是否建置成功。 ``` docker ps -a | grep <container-name> ex: docker ps -a | grep container-99-nginx ``` 4. Check web get something. ``` curl http://workshop.srcmesh.dev:80?? ex: curl http://workshop.srcmesh.dev:8099 ``` 6. Check docker login success. (需要有dockerhub帳號) ``` docker login > username: xxxxxx > password: xxxxxx ``` 5. Re-tag image name. (<dockerhub-name>為dockerhub帳號) ``` docker tag <image-name>:<tag> <dockerhub-name>/<rename-image>:<re-tag> ex. docker tag user-99-nginx:1.0.2 xxooxox/user-99-kenny:1.0.2 ``` 6. Push to dockerhub and check it in dockerhub. ``` docker push <rename-image>:<re-tag> ex. docker push xxooxox/user-99-kenny:1.0.2 ``` 7. Pull image to local and check it can run by new one.(要記得本機端不能有該名稱image) ``` docker pull <rename-image>:<tag> ex. docker pull xxooxox/user-99-kenny:1.0.2 ``` 執行前要先確保先前 [步驟3] 的container已經刪除。(相同port or name之容器是無法執行的，未刪除請先執行docker delete 進行刪除) ``` docker run -d -p 80??:81 --name <container-name-check> <rename-image>:<tag> ex: docker run -d -p 8099:81 --name container-99-nginx-check xxooxox/user-99-kenny:1.0.2 ``` 確認container建置後，測試網站是否成功架起。 ``` curl http://workshop.srcmesh.dev:80?? ex: curl http://workshop.srcmesh.dev:8099 ``` 8. Go to Github issue homework to reply.