prevent useres from sending negative concurrency values

rancher/rancher#25982

lib/shared/addon/components/cluster-driver/driver-import/component.js

@@ -12,6 +12,7 @@ export default Component.extend(ClusterDriver, {
   globalStore: service(),
   growl:       service(),
   settings:    service(),
+  intl:        service(),
 
   layout,
   configField:   'importedConfig',
@@ -41,8 +42,6 @@ export default Component.extend(ClusterDriver, {
       if (isEmpty(this.model.cluster.k3sConfig)) {
         set(this, 'model.cluster.k3sConfig', this.globalStore.createRecord({
           type:              'k3sConfig',
-          serverConcurrency: 1,
-          workerConcurrency: 1,
           kubernetesVersion: this.cluster.version.gitVersion
         }));
       }
@@ -102,6 +101,30 @@ export default Component.extend(ClusterDriver, {
     } ));
   }),
 
+  willSave() {
+    const {
+      configField: field,
+      config
+    } = this;
+    let errors = [];
+
+    if (field === 'k3sConfig' && config.k3supgradeStrategy) {
+      // doesn't work because missing deep validation
+      // errors = config.k3supgradeStrategy.validationErrors();
+      if (config.k3supgradeStrategy.serverConcurrency <= 0 || config.k3supgradeStrategy.workerConcurrency <= 0) {
+        errors.push(this.intl.t('clusterNew.k3simport.errors.concurrency.negative'))
+      }
+    }
+
+    if (!isEmpty(errors)) {
+      set(this, 'errors', errors);
+
+      return false;
+    }
+
+    return this._super();
+  },
+
   doneSaving() {
     if ( get(this, 'isEdit') ) {
       if (this.close) {

lib/shared/addon/components/k3s-cluster-info/template.hbs

@@ -1,6 +1,5 @@
 <div class="row">
   <div class="col span-6">
-    <!-- TODO use form-versions here when we have the api ready -->
     <label class="acc-label">Kubernetes Version</label>
     <div class="form-control">
       {{#input-or-display
@@ -60,6 +59,7 @@
           id="node-server-concurrency"
           class="form-control"
           type="number"
+          min=1
           value=k3sConfig.k3supgradeStrategy.serverConcurrency
         }}
       {{/input-or-display}}
@@ -78,6 +78,7 @@
           id="node-worker-concurrency"
           class="form-control"
           type="number"
+          min=1
           value=k3sConfig.k3supgradeStrategy.workerConcurrency
         }}
       {{/input-or-display}}

translations/en-us.yaml

@@ -3820,6 +3820,9 @@ clusterNew:
   k3simport:
     label: Rancher K3S
     shortLabel: K3S
+    errors:
+      concurrency:
+        negative: Only non-negative and non-zero concurrency values are valid.
   huaweicce:
     label: Huawei Cloud Container Engine
     shortLabel: Huawei CCE