Do not reschedule parent sync task if parent is unknown. (#1349)

src/server/scheduler.rs

@@ -17,7 +17,7 @@ use crate::{
     commons::{
         actor::Actor,
         crypto::dispatch::signerinfo::SignerInfo,
-        error::FatalError,
+        error::{Error, FatalError},
         eventsourcing::{Aggregate, AggregateStore, WalStore, WalSupport},
         storage::Ident,
         version::KrillVersion,
@@ -378,11 +378,18 @@ impl Scheduler {
             {
                 Err(e) => {
                     let next = self.config.requeue_remote_failed();
-
-                    error!(
-                        "Failed to synchronize CA '{ca}' with its parent '{parent}'. Will reschedule to: '{next}'. Error: {e}"
-                    );
-                    Ok(TaskResult::Reschedule(next))
+                    
+                    if let Error::CaParentUnknown(..) = e {
+                        warn!(
+                            "CA '{ca}' tried to sync with parent '{parent}'. Parent is unknown. Not rescheduling. Error: {e}"
+                        );
+                        Ok(TaskResult::Done)
+                    } else {
+                        error!(
+                            "Failed to synchronize CA '{ca}' with its parent '{parent}'. Will reschedule to: '{next}'. Error: {e}"
+                        );
+                        Ok(TaskResult::Reschedule(next))
+                    }
                 }
                 Ok(true) => {
                     let next = self.config.ca_refresh_next();