Add script to create tripleo-admin on deployed servers

When using deployed servers, we want to create a standard
tripleo-admin user for Mistral's ssh tasks (e.g. running Ansible on
overcloud). This script wraps the respective Mistral workflow.

Change-Id: I2de698b4aae07f74569243a9e7c1c56eb578e700
Related-Bug: #1708180
Depends-On: Ibe8e54f7b38d8c6c8d944d2b13f0eed004c34c4c

diff --git a/deployed-server/scripts/enable-ssh-admin.sh b/deployed-server/scripts/enable-ssh-admin.sh
new file mode 100755 (executable)
index 0000000..dcabead
--- /dev/null
+++ b/deployed-server/scripts/enable-ssh-admin.sh
@@ -0,0 +1,60 @@
+#!/bin/bash
+
+set -eu
+
+# whitespace (space or newline) separated list
+OVERCLOUD_HOSTS=${OVERCLOUD_HOSTS:-""}
+OVERCLOUD_SSH_USER=${OVERCLOUD_SSH_USER:-"$USER"}
+# this is just for compatibility with CI
+SUBNODES_SSH_KEY=${SUBNODES_SSH_KEY:-"$HOME/.ssh/id_rsa"}
+# this is the intended variable for overriding
+OVERCLOUD_SSH_KEY=${OVERCLOUD_SSH_KEY:-"$SUBNODES_SSH_KEY"}
+
+SLEEP_TIME=5
+
+function overcloud_ssh_hosts_json {
+    echo "$OVERCLOUD_HOSTS" | python -c '
+from __future__ import print_function
+import json, re, sys
+print(json.dumps(re.split("\s+", sys.stdin.read().strip())))'
+}
+
+function overcloud_ssh_key_json {
+    # we pass the contents to Mistral instead of just path, otherwise
+    # the key file would have to be readable for the mistral user
+    cat "$OVERCLOUD_SSH_KEY" | python -c 'import json,sys; print(json.dumps(sys.stdin.read()))'
+}
+
+function workflow_finished {
+    local execution_id="$1"
+    openstack workflow execution show -f shell $execution_id | grep 'state="SUCCESS"' > /dev/null
+}
+
+if [ -z "$OVERCLOUD_HOSTS" ]; then
+    echo 'Please set $OVERCLOUD_HOSTS'
+    exit 1
+fi
+
+echo "Starting workflow to create ssh admin on deployed servers."
+echo "SSH user: $OVERCLOUD_SSH_USER"
+echo "SSH key file: $OVERCLOUD_SSH_KEY"
+echo "Hosts: $OVERCLOUD_HOSTS"
+echo
+
+EXECUTION_PARAMS="{\"ssh_user\": \"$OVERCLOUD_SSH_USER\", \"ssh_servers\": $(overcloud_ssh_hosts_json), \"ssh_private_key\": $(overcloud_ssh_key_json)}"
+EXECUTION_CREATE_OUTPUT=$(openstack workflow execution create -f shell -d 'deployed server ssh admin creation' tripleo.access.v1.enable_ssh_admin "$EXECUTION_PARAMS")
+echo "$EXECUTION_CREATE_OUTPUT"
+EXECUTION_ID=$(echo "$EXECUTION_CREATE_OUTPUT" | grep '^id=' | awk '-F"' '{ print $2 }')
+
+if [ -z "$EXECUTION_ID" ]; then
+    echo "Failed to get workflow execution ID for ssh admin creation workflow"
+    exit 1
+fi
+
+echo -n "Waiting for the workflow execution to finish (id $EXECUTION_ID)."
+while ! workflow_finished $EXECUTION_ID; do
+    sleep $SLEEP_TIME
+    echo -n .
+done
+
+echo "Success."