fix: added mariadb backups

Author: henrywhitaker3

argo/cluster/databases/mariadb/chart/backup.yaml

@@ -0,0 +1,20 @@
+apiVersion: k8s.mariadb.com/v1alpha1
+kind: Backup
+metadata:
+  name: mariabackup
+spec:
+  mariaDbRef:
+    name: mariadb
+  schedule:
+    cron: "0 */2 * * *"
+  maxRetention: 72h
+
+  storage:
+    persistentVolumeClaim:
+      storageClassName: longhorn-single-hourly
+
+      resources:
+        requests:
+          storage: 15Gi
+      accessModes:
+        - ReadWriteOnce

argo/cluster/monitoring/kube-prometheus-stack/chart/rules/misc.yaml

@@ -103,6 +103,18 @@ spec:
             summary: ArgoCD service not synced (instance {{ $labels.instance }})
     - name: db
       rules:
+        - alert: GaleraClusterSize
+          expr: |
+            (
+              min(mysql_global_status_wsrep_cluster_size{job="mariadb-metrics", namespace="databases"})
+                -
+              sum(kube_statefulset_replicas{namespace="databases", statefulset="mariadb"})
+            ) != 0
+          for: 5m
+          labels:
+            severity: critical
+          annotations:
+            summary: Galera cluster size is not equal to the number of replicase
         - alert: MysqlDown
           expr: mysql_up{service!~"srep.*"} == 0
           for: 0m

argo/cluster/storage/longhorn/chart/templates/storage-1-hourly.yaml

@@ -0,0 +1,13 @@
+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: longhorn-single-hourly
+provisioner: driver.longhorn.io
+allowVolumeExpansion: true
+reclaimPolicy: Delete
+volumeBindingMode: Immediate
+parameters:
+  numberOfReplicas: "1"
+  recurringJobSelector:
+    - name: hourly
+      isGroup: true