Minor launch documentation improvements.

* launch/README: Demonstrate use of the nova client's image-list
and flavor-list features, to assist in selecting/confirming image
and RAM choices for passing to launch-node.py. Also improve the
section headers and add a section about activating the Puppet agent
on non-Jenkins-slave servers.

* launch/launch-node.py: Upon successful completion, display
parameters useful for subsequent DNS assignments.

Change-Id: I0defc62434ab2f60b23afe2048e8093614ca49ca
Reviewed-on: https://review.openstack.org/20923
Reviewed-by: Khai Do <do.khai@gmail.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins

launch/README

@@ -1,3 +1,6 @@
+Create Server
+=============
+
 Note that these instructions assume you're working from this
 directory on an updated local clone of the repository, and that
 your account is a member of the puppet group for access to the
@@ -10,18 +13,20 @@ to a group.)
 
 To launch a node in the OpenStack CI account (production servers)::
 
-  export FQDN=servername.openstack.org
   . ~root/ci-launch/openstackci-rs-nova.sh
+  export FQDN=servername.openstack.org
   sudo puppet cert generate $FQDN
   ./launch-node.py $FQDN
 
 To launch a node in the OpenStack Jenkins account (slave nodes)::
 
+  . ~root/ci-launch/openstackjenkins-rs-nova.sh
   export FQDN=slavename.slave.openstack.org
   export CERT=slavetype.slave.openstack.org
+  nova image-list
   export IMAGE='Ubuntu 12.10 (Quantal Quetzal)'
+  nova flavor-list
   export RAM=2048
-  . ~root/ci-launch/openstackjenkins-rs-nova.sh
   sudo puppet cert generate $CERT
   ./launch-node.py $FQDN --cert $CERT.pem --image "$IMAGE" --ram $RAM
 
@@ -38,8 +43,8 @@ automatically). Note that this example assumes you've already
 exported a relevant FQDN and sourced the appropriate API credentials
 above.
 
-DNS
-===
+Add DNS Records
+===============
 
 There are no scripts to handle DNS at the moment due to a lack of
 library support for the new Rackspace Cloud DNS (with IPv6).  To
@@ -47,15 +52,16 @@ manually update DNS, you will need the hostname, v4 and v6 addresses
 of the host, as well as the UUID (these can all be found by running
 the ''nova list'' command).  The environment variables used in the
 URL should be satisfied by sourcing the "openstackci-rs-nova.sh"
-script (or jenkins, as appropriate).
+script (or jenkins, as appropriate). Also the above launch script
+should output some environment variable assignments for UUID, IPV4
+and IPV6 you can cut and paste as needed, or you can fill them in
+yourself::
 
   . ~root/rackdns-venv/bin/activate
 
-  TEMPFILE=$(tempfile)
-  nova list | grep "| $FQDN " | sed 's/^| \([0-9a-f-]\+\) .* public=\([0-9a-f:]\+\), \([0-9\.]\+\);.*/export UUID="\1"\nexport IPV6="\2"\nexport IPV4="\3"/' > $TEMPFILE
-  cat $TEMPFILE
-  . $TEMPFILE
-  rm $TEMPFILE
+  UUID=01234567-89ab-cdef-fedc-ba9876543210
+  IPV4=123.45.67.89
+  IPV6=fedc:ba98:7654:3210:dead:beef:cafe:feed
 
   rackdns rdns-create --name $FQDN --data "$IPV6" --server-href https://$os_region_name.servers.api.rackspacecloud.com/v2/$OS_TENANT_NAME/servers/"$UUID" --ttl 300
   rackdns rdns-create --name $FQDN --data "$IPV4" --server-href https://$os_region_name.servers.api.rackspacecloud.com/v2/$OS_TENANT_NAME/servers/"$UUID" --ttl 300
@@ -63,3 +69,18 @@ script (or jenkins, as appropriate).
   . ~root/ci-launch/openstack-rs-nova.sh
   rackdns record-create --name $FQDN --type AAAA --data "$IPV6" --ttl 300 openstack.org
   rackdns record-create --name $FQDN --type A --data "$IPV4" --ttl 300 openstack.org
+
+Activate Puppet Agent
+=====================
+
+If this is a Jenkins slave, Puppet configuration is applied through
+an already installed cron job, so you can ignore this section. If
+this is ''not'' a Jenkins slave, you'll want to log into it via SSH
+and turn on the Puppet agent so it will start checking into the
+master on its own::
+
+  sudo sed -i 's/^START=.*/START=yes/' /etc/default/puppet
+  sudo invoke-rc.d puppet start
+
+You should be able to tell from the Puppet Dashboard when it begins
+to check in, which normally happens at 10-minute intervals.

launch/launch-node.py

@@ -128,6 +128,9 @@ def build_server(client, name, image, flavor, cert, environment):
         admin_pass = server.adminPass
         server = utils.wait_for_resource(server)
         bootstrap_server(server, admin_pass, key, cert, environment)
+        print('UUID=%s\nIPV4=%s\nIPV6=%s\n' % (server.id,
+                                               server.accessIPv4,
+                                               server.accessIPv6))
         if key:
             kp.delete()
     except Exception, real_error: