fix cluster config "leader" column empty (#25575)

* fix Cluster config "leader" column empty

* changelog file

Author: gally47

changelog/unreleased/pr-25566 copy.toml

@@ -0,0 +1,5 @@
+type = "f"
+message = "fix: cluster configuration leader column empty"
+
+issues = ["Graylog2/graylog-plugin-enterprise#13633"]
+pulls = ["25575"]

graylog2-web-interface/src/components/cluster-configuration/graylog-nodes/GraylogNodesColumnConfiguration.tsx

@@ -27,7 +27,7 @@ import ProcessingStateCell from './cells/ProcessingStateCell';
 import ThroughputMetricsCell from './cells/ThroughputMetricsCell';
 
 import CpuMetricsCell from '../shared-components/CpuMetricsCell';
-import { SecondaryText } from '../shared-components/NodeMetricsLayout';
+import { SecondaryText, StyledLabel } from '../shared-components/NodeMetricsLayout';
 import SizeAndRatioMetric from '../shared-components/SizeAndRatioMetric';
 
 const JOURNAL_WARNING_THRESHOLD = 0.1;
@@ -66,6 +66,14 @@ export const createColumnRenderers = (): ColumnRenderers<GraylogNode> => ({
       renderCell: (_value, entity) => <HostnameCell node={entity} />,
       minWidth: 300,
     },
+    is_leader: {
+      renderCell: (isLeader: boolean) => (
+        <SecondaryText>
+          {isLeader ? <StyledLabel bsSize="xs">Leader</StyledLabel> : <span>-</span>}
+        </SecondaryText>
+      ),
+      staticWidth: 'matchHeader',
+    },
     version: {
       renderCell: (_value, entity) => (
         <SecondaryText>