Docker Handson

 

Docker Handson

WORKING WITH SECRETS --

docker swarm init

echo "test" | docker secret create mysecret -

docker secret ls

docker service create --name Redis -- secret mysecret redis

docker service rm mysecret

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############################################################

################# DOCKER SWARM########################

############################################################

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############################################################

####Working with secrets

#step 1

docker swarm init

#step 2

printf "secret" | docker secret create mysecret -

#step 3

docker secret ls

#step 4

docker service create --name redis --secret mysecret redis:alpine

#step 5

skip

#step 6

docker service rm redis

docker secret rm mysecret

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############################################################

####Create an overlay network

#step 1

Host1:

docker swarm init

#step 2

paste on Host 2: docker swarm join --token......172.17.0.9:2377 (output init)

All on Host 1:

#step 3

docker network create -d overlay app1-network

#step 4

docker network ls

#step 5

docker service create --name redis --network app1-network redis:alpine

#step 6

skip

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############################################################

####Swarm - Commands

SKIP ALL STEPS

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############################################################

####Enable Manteinance Mode for Swarm Mode

SKIP ALL STEPS

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############################################################

####Apply rolling To A Service

SKIP ALL STEPS

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############################################################

####Load Balancing & Service Discovery

#step 1

Host1:

docker swarm init

Join as a worker

paste on Host 2:

docker swarm join --token......172.17.0.9:2377 (output init)

#Skip all steps

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############################################################

####Docker Swarm - A Recap

#step 1

Host1:

docker swarm init

#step 2

Join as a worker

paste on Host 2:

docker swarm join --token......172.17.0.9:2377 (output init)

#All on Host 1:

#step 3

docker service create --replicas 4 -p 80:80 --name web nginx

docker service ls

#step 4

docker service scale web=7

docker service ps web

#step 5

#NO EXECUTE# docker node update --availability drain worker1

#NO EXECUTE# docker node update --availability drain host01

docker node ls

######OUTPUT#:

ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS

r37qjum9q8990ctz7c9ooadxg * host01 Ready Active Leader

z824uxqpgn7if27zsjfwh2pgt host01 Ready Active <---this is the

'hostworker'

docker node update --availability drain 'hostWorker'

docker node update --availability drain 'z824uxqpgn7if27zsjfwh2pgt'

#stp 6

docker node update --availability active 'z824uxqpgn7if27zsjfwh2pgt'

#stp 7

docker network create -d overlay testnw

#stp 8

skip

#stp 9

docker service create --name redis redis:3.0.6

docker service create --mode global --name redis2 redis:3.0.6

#stp 10

docker node ls

z824uxqpgn7if27zsjfwh2pgt

docker node update --label-add color=red 'hostWorker'

docker node update --label-add color=red 'z824uxqpgn7if27zsjfwh2pgt'

#Step 11-12-13

skip, skip, skip

Disclaimer: This site is for pure educational purpose only. we recommend it only for reference. we still encourage to go through the course and learn the topics 

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