oct 2016 log

2016-10-28

how 2 get image via aws ecr on docker / docker-compose?

• aws ecr get-login command provides docker login to aws ecr
• sample shell as follows

# check credentails
: "${AWS_ACCESS_KEY_ID?env empty}"
: "${AWS_SECRET_ACCESS_KEY?env empty}"
: "${AWS_DEFAULT_REGION?env empty}"

echo "docker login via aws ecr command"
#eval "$(docker-machine env default)"
$(aws ecr get-login --region $AWS_DEFAULT_REGION)

after docker login passes, docker / docker-compose can handle docker images on aws ecr. token via get-login command is valid for only 12 hours.

2016-10-24

get stdin in shell

while read line
do
	result=$result$line
done <  "${1:-/dev/stdin}"

trim last charactor of variables

result=hogehoge
echo ${result:0:${#result}-1}

2016-10-20

terraform cheetsheat

• terraform loads all of .tf file
• terraform plan shows what changes will apply to infra (aka dry-run)
• terraform apply creates “real” resources
• terraform show shows actual infra status
• terraform plan -destroy shows what resources will destroy
• terraform destroy destroy infra