fixes for pluto

packages/os/pluto.service

@@ -1,6 +1,10 @@
 [Unit]
 Description=Generate additional settings for Kubernetes
+# Treat pluto as an honorary settings generator. It should run after sundog runs other
+# settings generators, and before settings-applier commits all the settings, renders
+# config files, and restarts services.
 After=network-online.target apiserver.service sundog.service
+Before=settings-applier.service
 Requires=sundog.service
 # We don't want to restart the unit if the network goes offline or apiserver restarts
 Wants=network-online.target apiserver.service
@@ -11,10 +15,16 @@ RefuseManualStop=true
 
 [Service]
 Type=oneshot
+# pluto needs access to any Kubernetes settings supplied through user-data, along with
+# network-related settings such as proxy servers. Commit any settings that might have
+# been generated during the sundog phase.
 ExecStartPre=/usr/bin/settings-committer
 ExecStart=/usr/bin/pluto
 RemainAfterExit=true
 StandardError=journal+console
 
 [Install]
-RequiredBy=preconfigured.target
+# settings-applier requires sundog to succeed as a signal that all settings generators ran
+# successfully. Since pluto is an honorary settings generator, settings-applier also needs
+# it to succeed before it can start.
+RequiredBy=settings-applier.service

sources/api/pluto/Cargo.toml

@@ -11,6 +11,7 @@ exclude = ["README.md"]
 
 [dependencies]
 bytes = "1"
+constants = { path = "../../constants", version = "0.1" }
 futures-util = { version = "0.3", default-features = false }
 headers = "0.3"
 http = "0.2"

sources/api/pluto/src/main.rs

@@ -395,7 +395,12 @@ async fn run() -> Result<()> {
         "kubernetes": settings
     });
     let json_str = generated_settings.to_string();
-    api::client_command(&["set", "-j", json_str.as_str()])
+    let uri = &format!(
+        "{}?tx={}",
+        constants::API_SETTINGS_URI,
+        constants::LAUNCH_TRANSACTION
+    );
+    api::client_command(&["raw", "-m", "PATCH", "-u", uri, "-d", json_str.as_str()])
         .await
         .context(error::SetFailureSnafu)?;