feat: Add cluster refresh

README.md

@@ -86,6 +86,17 @@ ubuntu@infra1:~$ juju run maas-region/0 create-admin username=admin password=pas
 
 # Managing the cluster after initial deployment
 
+
+## Cluster updates
+
+You can refresh the cluster by running the `refresh` command:
+
+```bash
+ubuntu@infra1:~$ maas-anvil refresh
+```
+
+This allows passing a new manifest file with `--manifest` for updating configuration options.
+
 ## Juju permission denied
 
 If you get an error message such as:

anvil-python/anvil/commands/haproxy.py

@@ -185,6 +185,7 @@ def haproxy_install_steps(
     fqdn: str,
     accept_defaults: bool,
     preseed: dict[Any, Any],
+    refresh: bool = False,
 ) -> List[BaseStep]:
     return [
         TerraformInitStep(manifest.get_tfhelper("haproxy-plan")),
@@ -195,6 +196,29 @@ def haproxy_install_steps(
             model,
             accept_defaults=accept_defaults,
             deployment_preseed=preseed,
+            refresh=refresh,
         ),
         AddHAProxyUnitsStep(client, fqdn, jhelper, model),
     ]
+
+
+def haproxy_upgrade_steps(
+    client: Client,
+    manifest: Manifest,
+    jhelper: JujuHelper,
+    model: str,
+    accept_defaults: bool,
+    preseed: dict[Any, Any],
+) -> List[BaseStep]:
+    return [
+        TerraformInitStep(manifest.get_tfhelper("haproxy-plan")),
+        DeployHAProxyApplicationStep(
+            client,
+            manifest,
+            jhelper,
+            model,
+            accept_defaults=accept_defaults,
+            deployment_preseed=preseed,
+            refresh=True,
+        ),
+    ]

anvil-python/anvil/commands/maas_agent.py

@@ -117,9 +117,26 @@ def maas_agent_install_steps(
     jhelper: JujuHelper,
     model: str,
     fqdn: str,
+    refresh: bool = False,
 ) -> List[BaseStep]:
     return [
         TerraformInitStep(manifest.get_tfhelper("maas-agent-plan")),
-        DeployMAASAgentApplicationStep(client, manifest, jhelper, model),
+        DeployMAASAgentApplicationStep(
+            client, manifest, jhelper, model, refresh=refresh
+        ),
         AddMAASAgentUnitsStep(client, fqdn, jhelper, model),
     ]
+
+
+def maas_agent_upgrade_steps(
+    client: Client,
+    manifest: Manifest,
+    jhelper: JujuHelper,
+    model: str,
+) -> List[BaseStep]:
+    return [
+        TerraformInitStep(manifest.get_tfhelper("maas-agent-plan")),
+        DeployMAASAgentApplicationStep(
+            client, manifest, jhelper, model, refresh=True
+        ),
+    ]

anvil-python/anvil/commands/maas_region.py

@@ -125,9 +125,26 @@ def maas_region_install_steps(
     jhelper: JujuHelper,
     model: str,
     fqdn: str,
+    refresh: bool = False,
 ) -> List[BaseStep]:
     return [
         TerraformInitStep(manifest.get_tfhelper("maas-region-plan")),
-        DeployMAASRegionApplicationStep(client, manifest, jhelper, model),
+        DeployMAASRegionApplicationStep(
+            client, manifest, jhelper, model, refresh
+        ),
         AddMAASRegionUnitsStep(client, fqdn, jhelper, model),
     ]
+
+
+def maas_region_upgrade_steps(
+    client: Client,
+    manifest: Manifest,
+    jhelper: JujuHelper,
+    model: str,
+) -> List[BaseStep]:
+    return [
+        TerraformInitStep(manifest.get_tfhelper("maas-region-plan")),
+        DeployMAASRegionApplicationStep(
+            client, manifest, jhelper, model, refresh=True
+        ),
+    ]

anvil-python/anvil/commands/postgresql.py

@@ -50,6 +50,7 @@ def postgresql_install_steps(
     fqdn: str,
     accept_defaults: bool,
     preseed: dict[Any, Any],
+    refresh: bool = False,
 ) -> List[BaseStep]:
     return [
         TerraformInitStep(manifest.get_tfhelper("postgresql-plan")),
@@ -60,11 +61,34 @@ def postgresql_install_steps(
             model,
             accept_defaults=accept_defaults,
             deployment_preseed=preseed,
+            refresh=refresh,
         ),
         AddPostgreSQLUnitsStep(client, fqdn, jhelper, model),
     ]
 
 
+def postgresql_upgrade_steps(
+    client: Client,
+    manifest: Manifest,
+    jhelper: JujuHelper,
+    model: str,
+    accept_defaults: bool,
+    preseed: dict[Any, Any],
+) -> List[BaseStep]:
+    return [
+        TerraformInitStep(manifest.get_tfhelper("postgresql-plan")),
+        DeployPostgreSQLApplicationStep(
+            client,
+            manifest,
+            jhelper,
+            model,
+            accept_defaults=accept_defaults,
+            deployment_preseed=preseed,
+            refresh=True,
+        ),
+    ]
+
+
 def postgresql_questions() -> dict[str, questions.PromptQuestion]:
     return {
         "max_connections": questions.PromptQuestion(