To clean out a Juju model so you can use it from scratch, without deleting and recreating it

clean-juju-model.sh

# Clear out a model, for Juju 2
# ==

# Destroy all machines and remove applications
# --
clean_model() {
    model_name=${1}
    juju status --model ${model_name} --format json | jq '.machines' | jq -r 'keys[]' | xargs -n 1 juju remove-machine --force  # Force destroy all machines
    juju status --model ${model_name} --format json | jq '.applications' | jq -r 'keys[]' | xargs -n 1 juju remove-application  # Remove all applications
    watch -c -n 10 juju status --model ${model_name} --color
}

# Other useful commands
# ==
juju status --format json | jq '.machines' | jq -r 'keys[]'  # Get all machines
juju status --format json | jq '.applications' | jq -r 'keys[]'  # Get all applications
juju status --format short | awk '{print $2}' | sed -E 's/:$//'  # Get all units
juju status --format short | awk '{print $2}' | sed -E 's/:$//' | xargs -n 1 juju resolved --no-retry  # Resolve all problems