stack_orchestrator/deploy/k8s/cluster_info.py

@@ -114,27 +114,22 @@ class ClusterInfo:
                         nodeports.append(service)
         return nodeports
 
-    def get_ingress(self, use_tls=False, certificate_by_host={}, cluster_issuer="letsencrypt-prod"):
+    def get_ingress(self, use_tls=False, certificate=None, cluster_issuer="letsencrypt-prod"):
         # No ingress for a deployment that has no http-proxy defined, for now
         http_proxy_info_list = self.spec.get_http_proxy()
-        if not http_proxy_info_list:
-            return None
-
-        tls = [] if use_tls else None
-        rules = []
-        for http_proxy_info in http_proxy_info_list:
+        ingress = None
+        if http_proxy_info_list:
+            # TODO: handle multiple definitions
+            http_proxy_info = http_proxy_info_list[0]
             if opts.o.debug:
                 print(f"http-proxy: {http_proxy_info}")
             # TODO: good enough parsing for webapp deployment for now
             host_name = http_proxy_info["host-name"]
-            certificate = certificate_by_host[host_name] if host_name in certificate_by_host else None
-
-            if use_tls:
-                tls.append(client.V1IngressTLS(
-                    hosts=certificate["spec"]["dnsNames"] if certificate else [host_name],
-                    secret_name=certificate["spec"]["secretName"] if certificate else f"{self.app_name}-{host_name}-tls"
-                ))
-
+            rules = []
+            tls = [client.V1IngressTLS(
+                hosts=certificate["spec"]["dnsNames"] if certificate else [host_name],
+                secret_name=certificate["spec"]["secretName"] if certificate else f"{self.app_name}-tls"
+            )] if use_tls else None
             paths = []
             for route in http_proxy_info["routes"]:
                 path = route["path"]
@@ -161,24 +156,24 @@ class ClusterInfo:
                     paths=paths
                 )
             ))
-        spec = client.V1IngressSpec(
-            tls=tls,
-            rules=rules
-        )
+            spec = client.V1IngressSpec(
+                tls=tls,
+                rules=rules
+            )
 
-        ingress_annotations = {
-            "kubernetes.io/ingress.class": "nginx",
-        }
-        if not certificate:
-            ingress_annotations["cert-manager.io/cluster-issuer"] = cluster_issuer
+            ingress_annotations = {
+                "kubernetes.io/ingress.class": "nginx",
+            }
+            if not certificate:
+                ingress_annotations["cert-manager.io/cluster-issuer"] = cluster_issuer
 
-        ingress = client.V1Ingress(
-            metadata=client.V1ObjectMeta(
-                name=f"{self.app_name}-ingress",
-                annotations=ingress_annotations
-            ),
-            spec=spec
-        )
+            ingress = client.V1Ingress(
+                metadata=client.V1ObjectMeta(
+                    name=f"{self.app_name}-ingress",
+                    annotations=ingress_annotations
+                ),
+                spec=spec
+            )
         return ingress
 
     # TODO: suppoprt multiple services

stack_orchestrator/deploy/k8s/deploy_k8s.py

@@ -227,18 +227,15 @@ class K8sDeployer(Deployer):
         self._create_volume_data()
         self._create_deployment()
 
-        http_proxy_info_list = self.cluster_info.spec.get_http_proxy()
+        http_proxy_info = self.cluster_info.spec.get_http_proxy()
         # Note: at present we don't support tls for kind (and enabling tls causes errors)
-        use_tls = http_proxy_info_list and not self.is_kind()
-        certificate_by_host = {}
-        if use_tls:
-            for http_proxy_info in http_proxy_info_list:
-                certificate = self._find_certificate_for_host_name(http_proxy_info["host-name"])
-                if opts.o.debug and certificate:
-                    print(f"Using existing certificate: {certificate}")
-                certificate_by_host[http_proxy_info["host-name"]] = certificate
+        use_tls = http_proxy_info and not self.is_kind()
+        certificate = self._find_certificate_for_host_name(http_proxy_info[0]["host-name"]) if use_tls else None
+        if opts.o.debug:
+            if certificate:
+                print(f"Using existing certificate: {certificate}")
 
-        ingress: client.V1Ingress = self.cluster_info.get_ingress(use_tls=use_tls, certificate_by_host=certificate_by_host)
+        ingress: client.V1Ingress = self.cluster_info.get_ingress(use_tls=use_tls, certificate=certificate)
         if ingress:
             if opts.o.debug:
                 print(f"Sending this ingress: {ingress}")
@@ -384,46 +381,36 @@ class K8sDeployer(Deployer):
         if not pods:
             return
 
-        tls_by_host = {}
+        hostname = "?"
+        ip = "?"
+        tls = "?"
         try:
             ingress = self.networking_api.read_namespaced_ingress(namespace=self.k8s_namespace,
                                                                   name=self.cluster_info.get_ingress().metadata.name)
 
+            cert = self.custom_obj_api.get_namespaced_custom_object(
+                group="cert-manager.io",
+                version="v1",
+                namespace=self.k8s_namespace,
+                plural="certificates",
+                name=ingress.spec.tls[0].secret_name
+            )
+
+            hostname = ingress.spec.rules[0].host
             ip = ingress.status.load_balancer.ingress[0].ip
-            for rule in ingress.spec.rules:
-                hostname = rule.host
-                tls_spec = next((tls for tls in ingress.spec.tls if hostname in tls.hosts), None)
-                if tls_spec:
-                    cert = self.custom_obj_api.get_namespaced_custom_object(
-                        group="cert-manager.io",
-                        version="v1",
-                        namespace=self.k8s_namespace,
-                        plural="certificates",
-                        name=tls_spec.secret_name
-                    )
-                    tls = "notBefore: %s; notAfter: %s; names: %s" % (
-                        cert["status"]["notBefore"], cert["status"]["notAfter"], tls_spec.hosts
-                    )
-                    tls_by_host[hostname] = tls
-                else:
-                    tls_by_host[hostname] = None
+            tls = "notBefore: %s; notAfter: %s; names: %s" % (
+                cert["status"]["notBefore"], cert["status"]["notAfter"], ingress.spec.tls[0].hosts
+            )
         except:  # noqa: E722
             pass
 
         print("Ingress:")
-        if len(tls_by_host) == 0:
-            print("\tHostname:", "?")
-            print("\tIP:", "?")
-            print("\tTLS:", "?")
-            print("")
-
-        for hostname, tls in tls_by_host.items():
-            print("\tHostname:", hostname)
-            print("\tIP:", ip)
-            print("\tTLS:", tls)
-            print("")
-
+        print("\tHostname:", hostname)
+        print("\tIP:", ip)
+        print("\tTLS:", tls)
+        print("")
         print("Pods:")
+
         for p in pods:
             if p.metadata.deletion_timestamp:
                 print(f"\t{p.metadata.namespace}/{p.metadata.name}: Terminating ({p.metadata.deletion_timestamp})")

stack_orchestrator/deploy/webapp/deploy_webapp.py

@@ -13,16 +13,12 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http:#www.gnu.org/licenses/>.
 
-import shutil
-from typing import List
 import click
 import os
-import yaml
 from pathlib import Path
 from urllib.parse import urlparse
 from tempfile import NamedTemporaryFile
 
-from stack_orchestrator import constants
 from stack_orchestrator.util import error_exit, global_options2
 from stack_orchestrator.deploy.deployment_create import init_operation, create_operation
 from stack_orchestrator.deploy.deploy import create_deploy_context
@@ -40,38 +36,25 @@ def _fixup_container_tag(deployment_dir: str, image: str):
         wfile.write(contents)
 
 
-def _fixup_url_spec(spec_file_name: str, urls: List[str]):
+def _fixup_url_spec(spec_file_name: str, url: str):
+    # url is like: https://example.com/path
+    parsed_url = urlparse(url)
+    http_proxy_spec = f'''
+  http-proxy:
+    - host-name: {parsed_url.hostname}
+      routes:
+        - path: '{parsed_url.path if parsed_url.path else "/"}'
+          proxy-to: webapp:80
+    '''
     spec_file_path = Path(spec_file_name)
-
-    # Load existing spec
-    with open(spec_file_path, "r") as file:
-        spec_data = yaml.safe_load(file) or {}
-
-    # Build new http-proxy entries
-    http_proxy_entries = []
-    for url in urls:
-        parsed_url = urlparse(url)
-        http_proxy_entries.append({
-            "host-name": parsed_url.hostname,
-            "routes": [
-                {
-                    "path": parsed_url.path if parsed_url.path else "/",
-                    "proxy-to": "webapp:80"
-                }
-            ]
-        })
-
-    # Update the spec
-    if "network" not in spec_data:
-        spec_data["network"] = {}
-    spec_data["network"]["http-proxy"] = http_proxy_entries
-
-    # Write back the updated YAML
-    with open(spec_file_path, "w") as file:
-        yaml.dump(spec_data, file, default_flow_style=False, sort_keys=False)
+    with open(spec_file_path) as rfile:
+        contents = rfile.read()
+        contents = contents + http_proxy_spec
+    with open(spec_file_path, "w") as wfile:
+        wfile.write(contents)
 
 
-def create_deployment(ctx, deployment_dir, image, urls, kube_config, image_registry, env_file):
+def create_deployment(ctx, deployment_dir, image, url, kube_config, image_registry, env_file):
     # Do the equivalent of:
     # 1. laconic-so --stack webapp-template deploy --deploy-to k8s init --output webapp-spec.yml
     #   --config (eqivalent of the contents of my-config.env)
@@ -103,7 +86,7 @@ def create_deployment(ctx, deployment_dir, image, urls, kube_config, image_regis
         None
     )
     # Add the TLS and DNS spec
-    _fixup_url_spec(spec_file_name, urls)
+    _fixup_url_spec(spec_file_name, url)
     create_operation(
         deploy_command_context,
         spec_file_name,
@@ -116,20 +99,6 @@ def create_deployment(ctx, deployment_dir, image, urls, kube_config, image_regis
     os.remove(spec_file_name)
 
 
-def update_deployment(deployment_dir, image, urls, env_file):
-    # Update config if required
-    if env_file:
-        deployment_config_file = os.path.join(deployment_dir, "config.env")
-        shutil.copyfile(env_file, deployment_config_file)
-
-    # Update existing deployment spec with new urls
-    _fixup_url_spec(os.path.join(deployment_dir, constants.spec_file_name), urls)
-
-    # Update the image name if required
-    if image:
-        _fixup_container_tag(deployment_dir, image)
-
-
 @click.group()
 @click.pass_context
 def command(ctx):
@@ -151,4 +120,4 @@ def command(ctx):
 def create(ctx, deployment_dir, image, url, kube_config, image_registry, env_file):
     '''create a deployment for the specified webapp container'''
 
-    return create_deployment(ctx, deployment_dir, image, [url], kube_config, image_registry, env_file)
+    return create_deployment(ctx, deployment_dir, image, url, kube_config, image_registry, env_file)

stack_orchestrator/deploy/webapp/deploy_webapp_from_registry.py

@@ -20,7 +20,6 @@ import shutil
 import sys
 import tempfile
 import time
-from typing import List
 import uuid
 import yaml
 
@@ -39,8 +38,7 @@ from stack_orchestrator.deploy.webapp.util import (
     file_hash,
     deploy_to_k8s,
     publish_deployment,
-    get_requested_names,
-    hostnames_for_deployment_request,
+    hostname_for_deployment_request,
     generate_hostname_for_app,
     match_owner,
     skip_by_tag,
@@ -49,7 +47,7 @@ from stack_orchestrator.deploy.webapp.util import (
 )
 
 
-def process_app_deployment_request( # noqa
+def process_app_deployment_request(
     ctx,
     laconic: LaconicRegistryClient,
     app_deployment_request,
@@ -78,54 +76,45 @@ def process_app_deployment_request( # noqa
     logger.log(f"Retrieved app record {app_deployment_request.attributes.application}")
 
     # 2. determine dns
-    requested_names = hostnames_for_deployment_request(app_deployment_request, laconic)
-    logger.log(f"Determined requested name(s): {','.join(str(x) for x in requested_names)}")
+    requested_name = hostname_for_deployment_request(app_deployment_request, laconic)
+    logger.log(f"Determined requested name: {requested_name}")
 
-    fqdns = []
-    for requested_name in requested_names:
-        if "." in requested_name:
-            if "allow" == fqdn_policy or "preexisting" == fqdn_policy:
-                fqdns.append(requested_name)
-            else:
-                raise Exception(
-                    f"{requested_name} is invalid: only unqualified hostnames are allowed."
-                )
+    if "." in requested_name:
+        if "allow" == fqdn_policy or "preexisting" == fqdn_policy:
+            fqdn = requested_name
         else:
-            fqdns.append(f"{requested_name}.{default_dns_suffix}")
+            raise Exception(
+                f"{requested_name} is invalid: only unqualified hostnames are allowed."
+            )
+    else:
+        fqdn = f"{requested_name}.{default_dns_suffix}"
 
     # Normalize case (just in case)
-    fqdns = [fqdn.lower() for fqdn in fqdns]
+    fqdn = fqdn.lower()
 
-    # 3. check ownership of existing dnsrecord(s) vs this request
-    dns_lrns = []
-    existing_dns_records_by_lrns = {}
-    for fqdn in fqdns:
-        dns_lrn = f"{dns_record_namespace}/{fqdn}"
-        dns_lrns.append(dns_lrn)
-
-        dns_record = laconic.get_record(dns_lrn)
-        existing_dns_records_by_lrns[dns_lrn] = dns_record
-
-        if dns_record:
-            matched_owner = match_owner(app_deployment_request, dns_record)
-            if not matched_owner and dns_record.attributes.request:
-                matched_owner = match_owner(
-                    app_deployment_request,
-                    laconic.get_record(dns_record.attributes.request, require=True),
-                )
-
-            if matched_owner:
-                logger.log(f"Matched DnsRecord ownership for {fqdn}: {matched_owner}")
-            else:
-                raise Exception(
-                    "Unable to confirm ownership of DnsRecord %s for request %s"
-                    % (dns_lrn, app_deployment_request.id)
-                )
-        elif "preexisting" == fqdn_policy:
-            raise Exception(
-                f"No pre-existing DnsRecord {dns_lrn} could be found for request {app_deployment_request.id}."
+    # 3. check ownership of existing dnsrecord vs this request
+    dns_lrn = f"{dns_record_namespace}/{fqdn}"
+    dns_record = laconic.get_record(dns_lrn)
+    if dns_record:
+        matched_owner = match_owner(app_deployment_request, dns_record)
+        if not matched_owner and dns_record.attributes.request:
+            matched_owner = match_owner(
+                app_deployment_request,
+                laconic.get_record(dns_record.attributes.request, require=True),
             )
 
+        if matched_owner:
+            logger.log(f"Matched DnsRecord ownership: {matched_owner}")
+        else:
+            raise Exception(
+                "Unable to confirm ownership of DnsRecord %s for request %s"
+                % (dns_lrn, app_deployment_request.id)
+            )
+    elif "preexisting" == fqdn_policy:
+        raise Exception(
+            f"No pre-existing DnsRecord {dns_lrn} could be found for request {app_deployment_request.id}."
+        )
+
     # 4. get build and runtime config from request
     env = {}
     if app_deployment_request.attributes.config:
@@ -156,49 +145,30 @@ def process_app_deployment_request( # noqa
 
     # 5. determine new or existing deployment
     #   a. check for deployment lrn
-    app_deployment_lrns = [f"{deployment_record_namespace}/{fqdn}" for fqdn in fqdns]
+    app_deployment_lrn = f"{deployment_record_namespace}/{fqdn}"
     if app_deployment_request.attributes.deployment:
-        app_deployment_lrns = [app_deployment_request.attributes.deployment]
-        if not app_deployment_lrns[0].startswith(deployment_record_namespace):
-            raise Exception(
-                "Deployment LRN %s is not in a supported namespace"
-                % app_deployment_request.attributes.deployment
-            )
+        app_deployment_lrn = app_deployment_request.attributes.deployment
+    if not app_deployment_lrn.startswith(deployment_record_namespace):
+        raise Exception(
+            "Deployment LRN %s is not in a supported namespace"
+            % app_deployment_request.attributes.deployment
+        )
 
-    # Target deployment dir
-    deployment_dir = os.path.join(deployment_parent_dir, fqdns[-1])
-
-    # Existing deployment record: take the first lrn that resolves
-    deployment_record = None
-    fqdns_to_release = []
-    existing_deployment_dir = deployment_dir  # Default to target dir in case the app had been undeployed
-
-    for app_deployment_lrn in app_deployment_lrns:
-        deployment_record = laconic.get_record(app_deployment_lrn)
-        if deployment_record:
-            # Determine the deployment dir for existing deployment
-            dir_name = deployment_record.attributes.url.replace("https://", "")
-            existing_deployment_dir = os.path.join(deployment_parent_dir, dir_name)
-            if not os.path.exists(existing_deployment_dir):
-                raise Exception(
-                    "Deployment record %s exists, but not deployment dir %s. Please remove name."
-                    % (app_deployment_lrn, existing_deployment_dir)
-                )
-
-            previous_app_deployment_lrns: List[str] = deployment_record.names
-            previous_fqdns = [lrn.removeprefix(f"{deployment_record_namespace}/") for lrn in previous_app_deployment_lrns]
-            fqdns_to_release = list(set(previous_fqdns) - set(fqdns))
-
-            break
-
-    # Use the last fqdn for unique deployment container tag
+    deployment_record = laconic.get_record(app_deployment_lrn)
+    deployment_dir = os.path.join(deployment_parent_dir, fqdn)
     # At present we use this to generate a unique but stable ID for the app's host container
     # TODO: implement support to derive this transparently from the already-unique deployment id
-    unique_deployment_id = hashlib.md5(fqdns[-1].encode()).hexdigest()[:16]
+    unique_deployment_id = hashlib.md5(fqdn.encode()).hexdigest()[:16]
+    deployment_config_file = os.path.join(deployment_dir, "config.env")
     deployment_container_tag = "laconic-webapp/%s:local" % unique_deployment_id
     app_image_shared_tag = f"laconic-webapp/{app.id}:local"
     #   b. check for deployment directory (create if necessary)
-    if not os.path.exists(existing_deployment_dir):
+    if not os.path.exists(deployment_dir):
+        if deployment_record:
+            raise Exception(
+                "Deployment record %s exists, but not deployment dir %s. Please remove name."
+                % (app_deployment_lrn, deployment_dir)
+            )
         logger.log(
             f"Creating webapp deployment in: {deployment_dir} with container id: {deployment_container_tag}"
         )
@@ -206,23 +176,13 @@ def process_app_deployment_request( # noqa
             ctx,
             deployment_dir,
             deployment_container_tag,
-            [f"https://{fqdn}" for fqdn in fqdns],
+            f"https://{fqdn}",
             kube_config,
             image_registry,
             env_filename,
         )
-    else:
-        # Rename deployment dir according to new request (last fqdn from given dns)
-        os.rename(existing_deployment_dir, deployment_dir)
-
-        # Update the image name deployment_container_tag
-        # Skip for redeployment as deployment_container_tag won't get built
-        updated_image = None
-        if deployment_record.attributes.application != app.id:
-            updated_image = deployment_container_tag
-
-        # Update the existing deployment
-        deploy_webapp.update_deployment(deployment_dir, updated_image, [f"https://{fqdn}" for fqdn in fqdns], env_filename)
+    elif env_filename:
+        shutil.copyfile(env_filename, deployment_config_file)
 
     needs_k8s_deploy = False
     if force_rebuild:
@@ -272,11 +232,10 @@ def process_app_deployment_request( # noqa
     else:
         logger.log("Requested app is already deployed, skipping build and image push")
 
-    # 7. restart deployment on config or url spec change
+    # 7. update config (if needed)
     if (
         not deployment_record
-        or file_hash(os.path.join(deployment_dir, "config.env")) != deployment_record.attributes.meta.config
-        or len(fqdns_to_release) != 0
+        or file_hash(deployment_config_file) != deployment_record.attributes.meta.config
     ):
         needs_k8s_deploy = True
 
@@ -289,10 +248,9 @@ def process_app_deployment_request( # noqa
         laconic,
         app,
         deployment_record,
-        app_deployment_lrns,
-        existing_dns_records_by_lrns,
-        dns_lrns,
-        dns_record_namespace,
+        app_deployment_lrn,
+        dns_record,
+        dns_lrn,
         deployment_dir,
         dns_value,
         app_deployment_request,
@@ -300,17 +258,6 @@ def process_app_deployment_request( # noqa
         logger,
     )
     logger.log("Publication complete.")
-
-    # 9. delete unused names from previous deployment (app and dns)
-    for fqdn in fqdns_to_release:
-        # Delete app deployment name and DNS name
-        deployment_name = "{deployment_record_namespace}/{fqdn}"
-        dns_name = "{deployment_record_namespace}/{fqdn}"
-
-        logger.log(f"Removing names {deployment_name} and {dns_name}")
-        laconic.delete_name(deployment_name)
-        laconic.delete_name(dns_name)
-
     logger.log("END - process_app_deployment_request")
 
 
@@ -570,26 +517,21 @@ def command(  # noqa: C901
                     result = "ERROR"
                     continue
 
-                requested_names = get_requested_names(r)
-                if len(requested_names) == 0:
-                    requested_names = [generate_hostname_for_app(app)]
+                requested_name = r.attributes.dns
+                if not requested_name:
+                    requested_name = generate_hostname_for_app(app)
                     main_logger.log(
-                        "Generating name %s for request %s." % (requested_names[0], r.id)
+                        "Generating name %s for request %s." % (requested_name, r.id)
                     )
 
-                # Skip request if any of the names is superseded
-                for requested_name in requested_names:
-                    if (
-                        requested_name in skipped_by_name
-                        or requested_name in requests_by_name
-                    ):
-                        main_logger.log(
-                            "Ignoring request %s, it has been superseded." % r.id
-                        )
-                        result = "SKIP"
-                        break
-
-                if result == "SKIP":
+                if (
+                    requested_name in skipped_by_name
+                    or requested_name in requests_by_name
+                ):
+                    main_logger.log(
+                        "Ignoring request %s, it has been superseded." % r.id
+                    )
+                    result = "SKIP"
                     continue
 
                 if skip_by_tag(r, include_tags, exclude_tags):
@@ -597,20 +539,15 @@ def command(  # noqa: C901
                         "Skipping request %s, filtered by tag (include %s, exclude %s, present %s)"
                         % (r.id, include_tags, exclude_tags, r.attributes.tags)
                     )
-
-                    for requested_name in requested_names:
-                        skipped_by_name[requested_name] = r
-
+                    skipped_by_name[requested_name] = r
                     result = "SKIP"
                     continue
 
                 main_logger.log(
                     "Found pending request %s to run application %s on %s."
-                    % (r.id, r.attributes.application, ','.join(str(x) for x in requested_names))
+                    % (r.id, r.attributes.application, requested_name)
                 )
-
-                # Set request for on of the names
-                requests_by_name[requested_names[-1]] = r
+                requests_by_name[requested_name] = r
             except Exception as e:
                 result = "ERROR"
                 main_logger.log(f"ERROR examining request {r.id}: " + str(e))

stack_orchestrator/deploy/webapp/publish_webapp_deployer.py

@@ -76,7 +76,6 @@ def command(  # noqa: C901
             "name": hostname,
             "publicKey": pub_key,
             "paymentAddress": payment_address,
-            "deployerVersion": "1.0.0",
         }
     }
 

stack_orchestrator/deploy/webapp/util.py

@@ -21,7 +21,6 @@ import random
 import subprocess
 import sys
 import tempfile
-from typing import List
 import uuid
 import yaml
 
@@ -686,10 +685,9 @@ def publish_deployment(
     laconic: LaconicRegistryClient,
     app_record,
     deploy_record,
-    deployment_lrns,
-    existing_dns_records_by_lrns,
-    dns_lrns: List[str],
-    dns_record_namespace,
+    deployment_lrn,
+    dns_record,
+    dns_lrn,
     deployment_dir,
     dns_value=None,
     app_deployment_request=None,
@@ -703,48 +701,42 @@ def publish_deployment(
             int(deploy_record.attributes.version.split(".")[-1]) + 1
         )
 
-    dns_ids = []
-    for dns_lrn in dns_lrns:
-        dns_record = existing_dns_records_by_lrns[dns_lrn]
-        if not dns_record:
-            dns_ver = "0.0.1"
-        else:
-            dns_ver = "0.0.%d" % (int(dns_record.attributes.version.split(".")[-1]) + 1)
-
-        fqdn = dns_lrn.removeprefix(f"{dns_record_namespace}/")
-        uniq = uuid.uuid4()
-
-        new_dns_record = {
-            "record": {
-                "type": "DnsRecord",
-                "version": dns_ver,
-                "name": fqdn,
-                "resource_type": "A",
-                "meta": {"so": uniq.hex},
-            }
-        }
-        if app_deployment_request:
-            new_dns_record["record"]["request"] = app_deployment_request.id
-        if dns_value:
-            new_dns_record["record"]["value"] = dns_value
-
-        if logger:
-            logger.log("Publishing DnsRecord.")
-        dns_id = laconic.publish(new_dns_record, [dns_lrn])
-        dns_ids.append(dns_id)
+    if not dns_record:
+        dns_ver = "0.0.1"
+    else:
+        dns_ver = "0.0.%d" % (int(dns_record.attributes.version.split(".")[-1]) + 1)
 
     spec = yaml.full_load(open(os.path.join(deployment_dir, "spec.yml")))
-    last_fqdn = spec["network"]["http-proxy"][-1]["host-name"]
-    last_dns_id = dns_ids[-1]
+    fqdn = spec["network"]["http-proxy"][0]["host-name"]
+
+    uniq = uuid.uuid4()
+
+    new_dns_record = {
+        "record": {
+            "type": "DnsRecord",
+            "version": dns_ver,
+            "name": fqdn,
+            "resource_type": "A",
+            "meta": {"so": uniq.hex},
+        }
+    }
+    if app_deployment_request:
+        new_dns_record["record"]["request"] = app_deployment_request.id
+    if dns_value:
+        new_dns_record["record"]["value"] = dns_value
+
+    if logger:
+        logger.log("Publishing DnsRecord.")
+    dns_id = laconic.publish(new_dns_record, [dns_lrn])
 
     new_deployment_record = {
         "record": {
             "type": "ApplicationDeploymentRecord",
             "version": deploy_ver,
-            "url": f"https://{last_fqdn}",
+            "url": f"https://{fqdn}",
             "name": app_record.attributes.name,
             "application": app_record.id,
-            "dns": last_dns_id,
+            "dns": dns_id,
             "meta": {
                 "config": file_hash(os.path.join(deployment_dir, "config.env")),
                 "so": uniq.hex,
@@ -766,34 +758,21 @@ def publish_deployment(
 
     if logger:
         logger.log("Publishing ApplicationDeploymentRecord.")
-    deployment_id = laconic.publish(new_deployment_record, deployment_lrns)
-    return {"dns": dns_ids, "deployment": deployment_id}
+    deployment_id = laconic.publish(new_deployment_record, [deployment_lrn])
+    return {"dns": dns_id, "deployment": deployment_id}
 
 
-def get_requested_names(app_deployment_request):
-    request_dns = app_deployment_request.attributes.dns
-    return request_dns.split(",") if request_dns else []
-
-
-def hostnames_for_deployment_request(app_deployment_request, laconic):
-    requested_names = get_requested_names(app_deployment_request)
-
-    if len(requested_names) == 0:
+def hostname_for_deployment_request(app_deployment_request, laconic):
+    dns_name = app_deployment_request.attributes.dns
+    if not dns_name:
         app = laconic.get_record(
             app_deployment_request.attributes.application, require=True
         )
-        return [generate_hostname_for_app(app)]
-
-    dns_names = []
-    for requested_name in requested_names:
-        dns_name = requested_name
-        if dns_name.startswith("lrn://"):
-            record = laconic.get_record(dns_name, require=True)
-            dns_name = record.attributes.name
-
-        dns_names.append(dns_name)
-
-    return dns_names
+        dns_name = generate_hostname_for_app(app)
+    elif dns_name.startswith("lrn://"):
+        record = laconic.get_record(dns_name, require=True)
+        dns_name = record.attributes.name
+    return dns_name
 
 
 def generate_hostname_for_app(app):