hosts: Add db0.p.b

*db0.pyrocufflink.blue* will be the primary server in the new PostgreSQL
database cluster.  We're starting with Fedora 39 so we can have
PostgreSQL 15, to match the version managed by the Postgres Operator in
the Kubernetes cluster right now.

deploy/db0.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+# vim: set ts=4 :
+
+if ! virsh list --all --name | grep -qF db0; then
+	./newvm.sh db0 \
+		--fedora 39 \
+		--memory 8192,currentMemory=2048 \
+		--vcpus 4 \
+		--no-console \
+		-- \
+		--disk pool=default,size=128,cache=none \
+		|| exit
+	sleep 15
+fi
+
+nameserver=$(
+		dig +short -t srv _ldap._tcp.pdc._msdcs.pyrocufflink.blue \
+		| awk '{print $4}'
+) || exit
+nsupdate -g <<EOF || exit
+server ${nameserver%.}
+delete postgresql.pyrocufflink.blue
+add postgresql.pyrocufflink.blue 300 CNAME db0.pyrocufflink.blue.
+send
+EOF
+
+ANSIBLE_HOST_KEY_CHECKING=false \
+ansible-playbook \
+	-l db0.pyrocufflink.blue \
+	wait-for-host.yml \
+	bootstrap.yml \
+	datavol.yml \
+	pyrocufflink.yml \
+	postgresql.yml \
+	-u root \
+	-e ansible_host=db0.local \
+	-e @join.creds \
+	|| exit