Lingxian Kong 798af4d02a Improve trove guest agent image building
- Add a new element 'guest-agent' for image building. This element is
  used when dev_mode=false, so that the trove code is downloaded into
  the image during the building phase rather than during the guest
  agent initialization.
- Improve trovestack sub-command 'build-image'.

  ./trovestack build-image ${datastore_type} \
     ${guest_os} \
     ${guest_release} \
     ${dev_mode}

- Improve documentation.

Story: #2005387
Task: #30375

Change-Id: I9d7acbd6a97f8c01b48b0f2cf94398d549d89124
2019-04-10 09:29:40 +12:00

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#!/bin/bash
set -e
set -o xtrace
# CONTEXT: HOST prior to IMAGE BUILD as SCRIPT USER
# PURPOSE: creates the SSH key on the host if it doesn't exist. Then this copies the keys over to a staging area where
# they will be duplicated in the guest VM.
# This process allows the host to log into the guest but more importantly the guest phones home to get the trove
# source
source $_LIB/die
HOST_USERNAME=${HOST_USERNAME:-"ubuntu"}
SSH_DIR=${SSH_DIR:-"/home/${HOST_USERNAME}/.ssh"}
[ -n "${TMP_HOOKS_PATH}" ] || die "Temp hook path not set"
# copy files over the "staging" area for the guest image (they'll later be put in the correct location by the guest user
# not these keys should not be overridden otherwise a) you won't be able to ssh in and b) the guest won't be able to
# rsync the files
if [ -f ${SSH_DIR}/id_rsa ]; then
dd if=${SSH_DIR}/authorized_keys of=${TMP_HOOKS_PATH}/ssh-authorized-keys
dd if=${SSH_DIR}/id_rsa of=${TMP_HOOKS_PATH}/ssh-id_rsa
dd if=${SSH_DIR}/id_rsa.pub of=${TMP_HOOKS_PATH}/ssh-id_rsa.pub
else
die "SSH Authorized Keys file must exist along with pub and private key"
fi