Use asdf to switch terraform versions
asdf-vm or asdf is a CLI tool that manages multiple language runtime versions on a per-project basis. It’s like gvm, nvm, rbenv, and pyenv and more.
Purpose
This post shows you how to install and configure multiple versions of terraform using asdf. I used brew on OSX to install asdf in a bash shell. There are also instructions to install with git using linux bash, ZSH, and fish on Getting Started with asdf-vim.
Procedure
Install asdf with brew
brew install asdf
Successful output includes
==> Summary
🍺 /usr/local/Cellar/asdf/0.7.3: 92 files, 194.4KB, built in 3 seconds
Test for a successful instal using the asdf version command
asdf --version
Successful output includes a version number like this
v0.7.3
Configure your shell to use asdf using your .bash_profile
echo -e '\n. $(brew --prefix asdf)/asdf.sh' >> ~/.bash_profile
echo -e '\n. $(brew --prefix asdf)/etc/bash_completion.d/asdf.bash' >> ~/.bash_profile
To test, cat your ~/.bash_profile and filter for asdf. You should see this output from the cat command
cat ~/.bash_profile | grep -i asdf
. $(brew --prefix asdf)/asdf.sh
. $(brew --prefix asdf)/etc/bash_completion.d/asdf.bash
Test your ASDF_DIR and PATH is set properly env and filtering for asdf. You should see an ASDF_DIR entry as well as a PATH entry that includes /.asdf/shims
env | grep -ir asdf
(standard input):ASDF_DIR=/usr/local/opt/asdf
(standard input):PATH=/Users/scott/.asdf/shims:/usr/local/opt/asdf/bin:/Users/scott/.gem/ruby/2.6.0/bin:/Users/scott/.rbenv/shims:/usr/local/opt/ruby/bin:/Users/scott/anaconda3/bin:/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/scott/bin
Install dependencies for plugins
brew install \
coreutils automake autoconf openssl \
libyaml readline libxslt libtool unixodbc \
unzip curl
Successful output from brew includes a Summary and a Pouring for each dependency. This shows output for libxml
==> Summary
🍺 /usr/local/Cellar/libxml2/2.9.9_2: 281 files, 10.5MB
==> Pouring libxslt-1.1.33_1.mojave.bottle.tar.gz
Now, we have asdf installed and configured in our shell, and we’ll install the terraform plugin and manage between v.0.11 and v.0.12.
Install Terraform plugin for asdf
asdf plugin-add terraform https://github.com/Banno/asdf-hashicorp.git
Successful output includes Cloning from the reop and Unpacking the objects
asdf plugin-add terraform https://github.com/Banno/asdf-hashicorp.git
Cloning into '/Users/scott/.asdf/plugins/terraform'...
remote: Enumerating objects: 1, done.
remote: Counting objects: 100% (1/1), done.
remote: Total 57 (delta 0), reused 0 (delta 0), pack-reused 56
Unpacking objects: 100% (57/57), done.
List versions of terraform
asdf list-all terraform
Successful output includes a list versions like this
0.11.11
0.11.12-beta1
0.11.12
0.11.13
0.11.14
0.12.0-alpha1
0.12.0-alpha2
0.12.0-alpha3
0.12.0-alpha4
0.12.0-beta1
0.12.0-beta2
0.12.0-rc1
0.12.0
0.12.1
0.12.2
0.12.3
0.12.4
0.12.5
We chose to install the latest version at the time of this writing, 0.12.5 as well as the latest version of terraform 0.11; which is 0.11.14
Install the latest v 0.11.x terraform using asdf
asdf install terraform 0.11.14
expected output includes
Downloading terraform version 0.11.14 from https://releases.hashicorp.com/terraform/0.11.14/terraform_0.11.14_darwin_amd64.zip
Cleaning terraform previous binaries
Creating terraform bin directory
Extracting terraform archive
Install the latest v 0.12.x terraform using asdf
asdf install terraform 0.12.5
expected output includes
Downloading terraform version 0.12.5 from https://releases.hashicorp.com/terraform/0.12.5/terraform_0.12.5_darwin_amd64.zip
Cleaning terraform previous binaries
Creating terraform bin directory
Extracting terraform archive
Set the global terraform version to 0.12.5
asdf global terraform 0.12.5
there is NO expected output from this command. test with the terraform --verison command
terraform --version
expected output includes a terraform version number
Terraform v0.12.5
Test the current version of terraform using asdf
asdf current
expected output includes a terraform version
terraform 0.12.5 (set by /Users/scott/.tool-versions)
Switch to the older version of terraform using asdf to set the global version pf asdf
asdf global terraform 0.11.14
terraform --version
expected output includes a terraform version number
Terraform v0.11.14
Your version of Terraform is out of date! The latest version
is 0.12.5. You can update by downloading from www.terraform.io/downloads.html
Test the current version of terraform using asdf
asdf current
expected output includes a terraform version
terraform 0.11.14 (set by /Users/scott/.tool-versions)