diff --git a/common/mariadb/CHANGELOG.md b/common/mariadb/CHANGELOG.md
index 4381da5aa7d..19bdf8d5cfb 100644
--- a/common/mariadb/CHANGELOG.md
+++ b/common/mariadb/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## v0.34.0 - 2026/03/13
+* Add Ceph S3 storage backend support for `maria-back-me-up` backup configuration
+  * new `backup_v2.ceph_s3` section with dedicated credential paths, custom endpoint, and path-style URL support
+  * enables Ceph-only, Ceph + AWS dual-write, and other flexible storage combinations
+* Make AWS SSE-C fields conditional. `sse_customer_algorithm` and `sse_customer_key` are only rendered when `sse_customer_key` is configured
+* Fix Swift template to use `values.yaml` fields instead of hardcoded values (`user_name`, `user_domain_name`, `project_name`, `project_domain_name`)
+
 ## v0.33.0 - 2026/03/03
 * Add InnoDB buffer pool Prometheus alerts: `MariaDBBufferPoolNearlyFull` (warning, < 10% free) and `MariaDBBufferPoolExhausted` (critical, < 2.5% free)
 
diff --git a/common/mariadb/Chart.yaml b/common/mariadb/Chart.yaml
index 54ac3e4fd1b..0e5d24c5685 100644
--- a/common/mariadb/Chart.yaml
+++ b/common/mariadb/Chart.yaml
@@ -2,7 +2,7 @@
 apiVersion: v2
 description: A Helm chart for Kubernetes
 name: mariadb
-version: 0.33.0
+version: 0.34.0
 # scripts/docker-entyrpoint.sh should be updated when appVersion is updated
 appVersion: 10.11.16
 dependencies:
diff --git a/common/mariadb/ci/test-values.yaml b/common/mariadb/ci/test-values.yaml
index 3af7ed3595a..10e6bec663b 100644
--- a/common/mariadb/ci/test-values.yaml
+++ b/common/mariadb/ci/test-values.yaml
@@ -11,11 +11,16 @@ global:
   backup_v2:
     aws_access_key_id: superSecret
     aws_secret_access_key: superSecret
+    ceph_s3_access_key_id: superSecret
+    ceph_s3_secret_access_key: superSecret
   mariadb:
     backup_v2:
       aws:
         region: local
         sse_customer_key: superSecret
+      ceph_s3:
+        endpoint: "https://ceph-s3.local.example.com"
+        region: default
 
 test_db_host: testRelease-mariadb.svc
 root_password: secret123
@@ -29,6 +34,8 @@ backup_v2:
   enabled: true
   swift:
     password: superSecret
+  ceph_s3:
+    enabled: true
 
 users:
   test:
diff --git a/common/mariadb/templates/config/_backup_config.yaml.tpl b/common/mariadb/templates/config/_backup_config.yaml.tpl
index 077443d1145..7ee7f6f8e9e 100644
--- a/common/mariadb/templates/config/_backup_config.yaml.tpl
+++ b/common/mariadb/templates/config/_backup_config.yaml.tpl
@@ -31,25 +31,41 @@ database:
     - "{{$tl}}"
   {{- end }}
 storages:
-  {{- if .Values.backup_v2.aws.enabled }}
+  {{- if or .Values.backup_v2.aws.enabled .Values.backup_v2.ceph_s3.enabled }}
   s3:
+    {{- if .Values.backup_v2.aws.enabled }}
     - name: aws-{{ .Values.global.mariadb.backup_v2.aws.region }}
       aws_access_key_id: {{ include "mariadb.resolve_secret_squote" .Values.global.backup_v2.aws_access_key_id }}
       aws_secret_access_key: {{ include "mariadb.resolve_secret_squote" .Values.global.backup_v2.aws_secret_access_key }}
       region: {{ .Values.global.mariadb.backup_v2.aws.region }}
       bucket_name: "mariadb-backup-{{ .Values.global.region }}"
+      {{- if .Values.global.mariadb.backup_v2.aws.sse_customer_key }}
       sse_customer_algorithm: "AES256"
       sse_customer_key: {{ include "mariadb.resolve_secret_squote" .Values.global.mariadb.backup_v2.aws.sse_customer_key }}
+      {{- end }}
+    {{- end }}
+    {{- if .Values.backup_v2.ceph_s3.enabled }}
+    - name: ceph-{{ .Values.global.region }}
+      aws_access_key_id: {{ include "mariadb.resolve_secret_squote" .Values.global.backup_v2.ceph_s3_access_key_id }}
+      aws_secret_access_key: {{ include "mariadb.resolve_secret_squote" .Values.global.backup_v2.ceph_s3_secret_access_key }}
+      aws_endpoint: {{ .Values.global.mariadb.backup_v2.ceph_s3.endpoint | required "global.mariadb.backup_v2.ceph_s3.endpoint is required when ceph_s3 is enabled" | quote }}
+      s3_force_path_style: {{ .Values.backup_v2.ceph_s3.force_path_style }}
+      region: {{ .Values.global.mariadb.backup_v2.ceph_s3.region | default "default" }}
+      bucket_name: {{ .Values.global.mariadb.backup_v2.ceph_s3.bucket_name | default (printf "mariadb-backup-%s" .Values.global.region) | quote }}
+      {{- if .Values.backup_v2.ceph_s3.verify }}
+      verify: true
+      {{- end }}
+    {{- end }}
   {{- end }}
   {{- if .Values.backup_v2.swift.enabled }}
   swift:
     - name: swift-{{ .Values.global.region }}
-      auth_version: 3
+      auth_version: {{ .Values.backup_v2.swift.auth_version }}
       auth_url: "https://identity-3.{{ .Values.global.region }}.cloud.sap/v3"
-      user_name: db_backup
-      user_domain_name: Default
-      project_name: master
-      project_domain_name: ccadmin
+      user_name: {{ .Values.backup_v2.swift.user_name }}
+      user_domain_name: {{ .Values.backup_v2.swift.user_domain_name }}
+      project_name: {{ .Values.backup_v2.swift.project_name }}
+      project_domain_name: {{ .Values.backup_v2.swift.project_domain_name }}
       password: {{ include "mariadb.resolve_secret_squote" .Values.backup_v2.swift.password | required "Please set .Values.backup_v2.swift.password" }}
       region: {{ .Values.global.region }}
       container_name: "mariadb-backup-{{ .Values.global.region }}"
diff --git a/common/mariadb/values.yaml b/common/mariadb/values.yaml
index 5af2495f591..ec81c2f74e4 100644
--- a/common/mariadb/values.yaml
+++ b/common/mariadb/values.yaml
@@ -212,6 +212,10 @@ backup_v2:
     run_after_inc_backups: 12
   aws:
     enabled: true
+  ceph_s3:
+    enabled: false
+    force_path_style: true
+    verify: false
   swift:
     enabled: true
     user_name: db_backup