cloud-technologies

Cloud technologies repository, semester IV.

cheat sheet

lab01

• ps -a - show all containers
• pull - download docker image
• run - create a container from an image
• start -a - start container with input/output signals
• rm - delete a stopped container
• rmi - delete image
• stop - stop container
• kill - force stop
• prune - ???

lab02

• run -it - create container and start with input/output signals
• logs - get logs from container
• exec - access the running container / execute the command inside the container
• create - create container

lab03

• build -f filename . - build custom docker image with name filename

lab04

FROM node:14                    
WORKDIR /usr/src/my_node_app
COPY ./package.json ./
RUN npm i
COPY ./index.js ./
EXPOSE 8080
CMD node index.js

• FROM - set the base image
• WORKDIR - set the working directory
• COPY - copy files or folders from source to the dest path
• RUN - execute any commands on top of the current image
• EXPOSE - define the network ports that this container will listen on at runtime
• CMD - provide defaults for an executing container, there can only be one CMD instruction in a Dockerfile

lab05

• network create name - creates a new network
• network ls - lists all the networks the docker knows about
• network rm name - removes one or more networks by name or identifier
• network inspect name - returns information about one or more networks
• docker network connect NETWORK CONTAINER - connects a container to a network

lab06

• docker-compose up - builds, starts, and attaches to containers for a service
• docker-compose up -d - run containers in the background
• docker-compose stop - stops running containers without removing them
• docker-compose down --volumes - stops containers and remove named volumes declared in the volumes section of the Compose file

lectures

• run -p local-port:server-port - port mapping
• run -v - mapping directories
• exec -it ID sh - run container shell
• network ls - show networking
• network inspect - show extra details
• network create NAME - create own docker network

kubectl

• get pods - prints a table of the most important information about the specified resources
• get all - prints all
• describe TYPE NAME - will print debug information about the given resource
• create -f NAME - create a resource from a file or from stdin
• delete TYPE NAME - delete resources by file names
• apply -f NAME - apply a configuration to a resource by file name or stdin
• scale --replicas=XXX -f NAME - set a new size for a deployment
• logs -f NAME - print the logs for a container in a pod or specified resource
• exec -it NAME -- COMMAND - execute a command in a container

kubectl - types

• pod
• replicaset
• deployment
• nodeport
• configmaps
• more

Something

• ip addr - IP checking

My docker images

• https://hub.docker.com/repository/docker/azalurg/node-server