Differences
This shows you the differences between two versions of the page.
|
ii:labs:s2:04:tasks:01 [2022/05/18 14:20] radu.ciobanu created |
ii:labs:s2:04:tasks:01 [2024/04/11 12:44] (current) radu.ciobanu |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | ==== 01. [00p] Running a multi-container application ==== | + | ==== 01. [20p] Running containers ==== |
| == Subtasks == | == Subtasks == | ||
| - | - based on the sources and the Dockerfile in the //**api**// folder from the lab archive, build an image with the name **//api-lab4-image//** | + | - pull the **//busybox//** image from the official Docker registry to the local cache |
| - | - create a bridge network called **//lab4-db-network//** | + | - run a **//busybox//** container that executes the **//uptime//** command |
| - | - create another bridge network called **//lab4-adminer-network//** | + | - run an interactive **//busybox//** container; once you enter it, run the command **//wget google.com//**, then exit |
| - | - create a volume named **//lab4-db-volume//** | + | - run a **//busybox//** detached interactive container (daemon); once you have started it, attach to it and run the **//id//** command, then exit |
| - | - launch a container //**in the background**// for a database with the following features: | + | - delete all containers and images created at the previous points |
| - | - a bind mount will be attached that will map between the **//./database/init-db.sql//** file on the local machine (this will be the source to the bind mount flag and can be found in the lab archive) and the **///docker-entrypoint-initdb.d/init-db.sql//** file in the container to be run (this will be the destination) | + | |
| - | - attach the previously-created **//lab4-db-volume//** volume (as source) to the **///var/lib/postgresql/data//** path in the running container (as destination) | + | |
| - | - the container will be part the previously-created **//lab4-db-network//** and **//lab4-adminer-network//** networks | + | |
| - | - the following environment variables will be specified (in a **//docker run//** command, this is done as follows: **// docker run -e NAME=value//**): | + | |
| - | - environment variable **//POSTGRES_USER//** with value **//admin//** | + | |
| - | - environment variable **//POSTGRES_PASSWORD//** with value **//admin//** | + | |
| - | - environment variable **//POSTGRES_DB//** with value **//books//** | + | |
| - | - the container you run will be called **//lab4-db//** | + | |
| - | - you will run the **//postgres//** image from the official register | + | |
| - | - Start a container with the previously created image ** // api-laborator-1-image // ** in the background, with the following features: | + | |
| - | - the container will run on the previously created ** // laboratory1-db-network // ** network | + | |
| - | - the following environmental variables will be specified: | + | |
| - | - variable ** // PGUSER // ** with value ** // admin // ** | + | |
| - | - variable ** // PGPASSWORD // ** with value ** // admin // ** | + | |
| - | - variable ** // PGDATABASE // ** with the value ** // books // ** | + | |
| - | - variable ** // PGHOST // ** with value ** // laboratory1-db // ** | + | |
| - | - variable ** // PGPORT // ** with value ** // 5432 // ** | + | |
| - | - the rolled container will be called ** // laborator1-api // ** | + | |
| - | - the container will display port 80 and map it to port 5555 on the local machine. | + | |
| - | - Check that the two containers are running properly and have connectivity: | + | |
| - | - using [[https://www.postman.com | Postman]] or any other similar application, make GET and POST requests on [[http: // localhost: 5555 / api / books]] (for a tutorial on Postman, you can enter [[https://learning.postman.com/docs/getting-started/sending-the-first-request/|aici]]) | + | |
| - | - a JSON body with the format '' %% {"title": "title", "author": "author"} %% '' is expected for POST requests | + | |
| - | - GET applications will return a list of books added by POST applications. | + | |
| - | - Verify that the volume you added keeps the data persisting: | + | |
| - | - stop and delete the two containers | + | |
| - | - restart the two containers with the same commands as before | + | |
| - | - send a GET request | + | |
| - | - If you set it up correctly, you will receive a list of previously added books. | + | |
| - | + | ||
| - | == What to upload == | + | |
| - | + | ||
| - | * a screenshot showing the successful execution of the Hello World container | + | |
