open-nomad/ui/app/templates/components/exec/open-button.hbs

{{#let (cannot "exec allocation" namespace=this.job.namespace) as |cannotExec|}}
  <button
    data-test-exec-button
    type="button"
    class="button exec-button is-outline is-small {{if cannotExec "tooltip"}}"
    disabled={{if cannotExec 'disabled'}}
    aria-label={{if cannotExec "You don’t have permission to exec"}}
    {{action "open"}}>
    {{x-icon "console"}}
    <span>Exec</span>
  </button>
{{/let}}