From eb11d74e9f0bf983830dd3c2447406b507e229b2 Mon Sep 17 00:00:00 2001
From: ychangkim <kkmbal@gmail.com>
Date: Wed, 1 Apr 2026 17:40:33 +0900
Subject: [PATCH] feat: add configurable shmSizeLimit for /dev/shm in
 jupyterlab chart

Introduce shmSizeLimit value (default 512Mi) to control the size of the
RAM-backed /dev/shm volume. Leave empty to apply no limit.
---
 manifests/helm/jupyterlab/1.0.0/templates/deployment.yaml | 3 +++
 manifests/helm/jupyterlab/1.0.0/values.yaml               | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/manifests/helm/jupyterlab/1.0.0/templates/deployment.yaml b/manifests/helm/jupyterlab/1.0.0/templates/deployment.yaml
index d786f9c..72efafd 100644
--- a/manifests/helm/jupyterlab/1.0.0/templates/deployment.yaml
+++ b/manifests/helm/jupyterlab/1.0.0/templates/deployment.yaml
@@ -103,3 +103,6 @@ spec:
         - name: dshm
           emptyDir:
             medium: Memory
+            {{- if .Values.shmSizeLimit }}
+            sizeLimit: {{ .Values.shmSizeLimit }}
+            {{- end }}
diff --git a/manifests/helm/jupyterlab/1.0.0/values.yaml b/manifests/helm/jupyterlab/1.0.0/values.yaml
index f366082..183ea61 100644
--- a/manifests/helm/jupyterlab/1.0.0/values.yaml
+++ b/manifests/helm/jupyterlab/1.0.0/values.yaml
@@ -74,5 +74,8 @@ dataVolume:
 #     mountPath: "/group_data"
 groupVolumes: []
 
+# /dev/shm shared memory size limit (e.g. "512Mi", "1Gi"). Leave empty for no limit.
+shmSizeLimit: "512Mi"
+
 # imagePullSecrets for private registries
 imagePullSecrets: []