14-self-healing-infra.sh

export AWS_ACCESS_KEY_ID=[...]

export AWS_SECRET_ACCESS_KEY=[...]

export AWS_DEFAULT_REGION=us-east-1

curl https://editions-us-east-1.s3.amazonaws.com/aws/stable/Docker.tmpl \
    | jq "."

curl https://editions-us-east-1.s3.amazonaws.com/aws/stable/Docker.tmpl \
    | jq ".Metadata"

aws cloudformation create-stack \
    --template-url https://editions-us-east-1.s3.amazonaws.com/aws/stable/Docker.tmpl \
    --capabilities CAPABILITY_IAM \
    --stack-name devops22 \
    --parameters \
    ParameterKey=ManagerSize,ParameterValue=3 \
    ParameterKey=ClusterSize,ParameterValue=0 \
    ParameterKey=KeyName,ParameterValue=devops22 \
    ParameterKey=EnableSystemPrune,ParameterValue=yes \
    ParameterKey=EnableCloudWatchLogs,ParameterValue=no \
    ParameterKey=EnableCloudStorEfs,ParameterValue=yes \
    ParameterKey=ManagerInstanceType,ParameterValue=t2.micro \
    ParameterKey=InstanceType,ParameterValue=t2.micro

aws cloudformation describe-stack-resources \
    --stack-name devops22 | jq "."

aws cloudformation describe-stacks \
    --stack-name devops22 | jq "."

aws cloudformation describe-stacks \
    --stack-name devops22 | \
    jq -r ".Stacks[0].StackStatus"

aws cloudformation describe-stacks \
    --stack-name devops22 | \
    jq -r ".Stacks[0].Outputs"

aws cloudformation describe-stacks \
    --stack-name devops22 | \
    jq -r ".Stacks[0].Outputs[] | \
    select(.OutputKey==\"DefaultDNSTarget\")\
    .OutputValue"

CLUSTER_DNS=$(aws cloudformation \
    describe-stacks \
    --stack-name devops22 | \
    jq -r ".Stacks[0].Outputs[] | \
    select(.OutputKey==\"DefaultDNSTarget\")\
    .OutputValue")

aws ec2 describe-instances | jq -r "."

aws ec2 describe-instances | \
    jq -r ".Reservations[].Instances[] \
    | select(.SecurityGroups[].GroupName \
    | contains(\"devops22-ManagerVpcSG\"))\
    .PublicIpAddress"

CLUSTER_IP=$(aws ec2 describe-instances \
    | jq -r ".Reservations[] \
    .Instances[] \
    | select(.SecurityGroups[].GroupName \
    | contains(\"devops22-ManagerVpcSG\"))\
    .PublicIpAddress" \
    | tail -n 1)

ssh -i devops22.pem docker@$CLUSTER_IP

docker node ls

docker service create --name test \
    --replicas 10 alpine sleep 1000000

docker service ps test

exit

aws ec2 describe-instances \
    | jq -r ".Reservations[] \
    .Instances[] \
    | select(.SecurityGroups[].GroupName \
    | contains(\"devops22-ManagerVpcSG\"))\
    .InstanceId"

INSTANCE_ID=$(aws ec2 describe-instances \
    | jq -r ".Reservations[] \
    .Instances[] \
    | select(.SecurityGroups[].GroupName \
    | contains(\"devops22-ManagerVpcSG\"))\
    .InstanceId" \
    | tail -n 1)

aws ec2 terminate-instances \
    --instance-ids $INSTANCE_ID

aws ec2 describe-instances \
    | jq -r ".Reservations[] \
    .Instances[] \
    | select(.SecurityGroups[].GroupName \
    | contains(\"devops22-ManagerVpcSG\"))\
    .State.Name"

aws ec2 describe-instances \
    | jq -r ".Reservations[] \
    .Instances[] \
    | select(.SecurityGroups[].GroupName \
    | contains(\"devops22-ManagerVpcSG\"))\
    .State.Name"

aws ec2 describe-instances \
    | jq -r ".Reservations[] \
    .Instances[] \
    | select(.SecurityGroups[].GroupName \
    | contains(\"devops22-ManagerVpcSG\"))\
    .State.Name"

CLUSTER_IP=$(aws ec2 describe-instances \
    | jq -r ".Reservations[] \
    .Instances[] \
    | select(.SecurityGroups[].GroupName \
    | contains(\"devops22-ManagerVpcSG\"))\
    .PublicIpAddress" \
    | tail -n 1)

ssh -i devops22.pem docker@$CLUSTER_IP

docker node ls

docker node ls

docker service ps test

docker service update \
    --env-add "FOO=BAR" test

docker service ps \
    -f desired-state=running test

exit

aws cloudformation delete-stack \
    --stack-name devops22

aws cloudformation describe-stacks \
    --stack-name devops22 | \
    jq -r ".Stacks[0].StackStatus"