Simple functions to try aws operations

aws_shorthand.sh

## Installation of aws-cli,jq is required

# get IP of EC2 instances
getec2ip(){
        aws ec2 describe-instances --filters "Name=tag:Name,Values=$1" --region=$2 | jq '.Reservations | .[0] | .Instances | .[0] | .NetworkInterfaces | .[0] | .PrivateIpAddresses | .[0] | .Association | .PublicIp' | cut -d '"' -f 2
}

getec2type(){
        aws ec2 describe-instances --filters "Name=tag:Name,Values=$1" --region=$2 | jq '.Reservations | .[0] | .Instances | .[0] | .InstanceType '
}

getec2id(){
        aws ec2 describe-instances --filters "Name=tag:Name,Values=$1" --region=$2 | jq '.Reservations | .[0] | .Instances | .[0] | .InstanceId '        
}

stopec2(){
        aws ec2 stop-instances --instance-ids $(aws ec2 describe-instances --filters "Name=tag:Name,Values=$1" --region=$2 | jq '.Reservations | .[0] | .Instances | .[0] | .InstanceId ') --region $2
}

detachfromalb(){
        aws elbv2 deregister-targets --target-group-arn $(aws elbv2 describe-target-groups --region $3 --names "$1" | jq '. | .[] | .[].TargetGroupArn' | cut -d '"' -f 2) --targets Id=$(aws ec2 describe-instances --filters "Name=tag:Name,Values=$2" --region=$3 | jq '.Reservations | .[0] | .Instances | .[0] | .InstanceId ' | cut -d '"' -f 2) --region $3
}

attachtoalb(){
        aws elbv2 register-targets --target-group-arn $(aws elbv2 describe-target-groups --region $3 --names "$1" | jq '. | .[] | .[].TargetGroupArn' | cut -d '"' -f 2) --targets Id=$(aws ec2 describe-instances --filters "Name=tag:Name,Values=$2" --region=$3 | jq '.Reservations | .[0] | .Instances | .[0] | .InstanceId ' | cut -d '"' -f 2) --region $3
}