Getting AWS Availability Zone saved in bash script variable-CodePudding

Using a shell script, I'm looking to get the current AZ where the instance is located.

Here is what I've tried but obviously HOST_NAME is not a command. How do I save the current AZ in a HOST_NAME variable?

AZ=`ec2-metadata -z | cut -d':' -f2` 

if [[ $AZ = "eu-west-2a" ]]
then
  HOST_NAME = "es_az1"
elif [[ $AZ = "eu-west-2b" ]]
then
  HOST_NAME = "es_az2"
else
  HOST_NAME = "es_az3"
  exit 1;
fi

CodePudding user response：

You can't have spaces in HOST_NAME = . It should eb:

AZ=`ec2-metadata -z | cut -d':' -f2` 

if [[ $AZ = "eu-west-2a" ]]
then
  HOST_NAME="es_az1"
elif [[ $AZ = "eu-west-2b" ]]
then
  HOST_NAME="es_az2"
else
  HOST_NAME="es_az3"
  exit 1;
fi