Test for certificate error and prompt to regenerate

If the docker-machine certificates get in a bad state, the current behavior causes an infinite loop waiting for `docker-machine env` to return. Now it will echo the certificate error and prompt the user to regenerate.

Test for certificate error and prompt to regenerate
d3208c6c · Brandon Weeks · c0579af6 · d3208c6c
Unverified Commit d3208c6c authored Apr 29, 2016 by Brandon Weeks
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Showing with 8 additions and 2 deletions

common.sh build/common.sh +8 -2

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--- a/build/common.sh
+++ b/build/common.sh
@@ -201,8 +201,14 @@ function kube::build::prepare_docker_machine() {
  }
  docker-machine start "${DOCKER_MACHINE_NAME}" &> /dev/null
  # it takes `docker-machine env` a few seconds to work if the machine was just started
-  while ! docker-machine env ${DOCKER_MACHINE_NAME} &> /dev/null; do
+  local docker_machine_out
-    sleep 1
+  while ! docker_machine_out=$(docker-machine env "${DOCKER_MACHINE_NAME}" 2>&1); do
+    if [[ ${docker_machine_out} =~ "Error checking TLS connection" ]]; then
+      echo ${docker_machine_out}
+      docker-machine regenerate-certs ${DOCKER_MACHINE_NAME}
+    else
+      sleep 1
+    fi
  done
  eval $(docker-machine env "${DOCKER_MACHINE_NAME}")
  kube::log::status "A Docker host using docker-machine named '${DOCKER_MACHINE_NAME}' is ready to go!"