From 12023b7f02070987b465fb6cd45dd021fd3978f8 Mon Sep 17 00:00:00 2001
From: Nikita <166552198+nbykov0@users.noreply.github.com>
Date: Tue, 30 Dec 2025 13:55:05 +0300
Subject: [PATCH] [multus] Increase memory limit (#1773)

## What this PR does
Increases multus memory limit.
Based on multiple community reports stating that multus tend to consume
a lot of memory during startup after a node reboot.

### Release note
```release-note
Multus memory limit increased.
```
---
 packages/system/multus/Makefile               |  5 +-
 .../multus/patches/customize-deployment.patch | 49 +++++++++++++++++++
 .../templates/multus-daemonset-thick.yml      |  2 +-
 3 files changed, 52 insertions(+), 4 deletions(-)
 create mode 100644 packages/system/multus/patches/customize-deployment.patch

diff --git a/packages/system/multus/Makefile b/packages/system/multus/Makefile
index 7825bd5e..b7ae5bfc 100644
--- a/packages/system/multus/Makefile
+++ b/packages/system/multus/Makefile
@@ -9,6 +9,5 @@ update:
 	mkdir templates
 	$(eval RELEASE := $(shell curl -s https://api.github.com/repos/k8snetworkplumbingwg/multus-cni/releases/latest?per_page=1 | jq -r '.name'))
 	wget -q https://raw.githubusercontent.com/k8snetworkplumbingwg/multus-cni/refs/tags/$(RELEASE)/deployments/multus-daemonset-thick.yml -O templates/multus-daemonset-thick.yml
-	sed -i 's/namespace: kube-system/namespace: $(NAMESPACE)/;/multus-cni/s/snapshot-thick/$(RELEASE)-thick/' templates/multus-daemonset-thick.yml && \
-	sed -i '/name:/s/kube-multus-ds/cozy-multus/;/memory:/s/"50Mi"/"100Mi"/' templates/multus-daemonset-thick.yml
-
+	sed -i '/multus-cni/s/snapshot-thick/$(RELEASE)-thick/' templates/multus-daemonset-thick.yml && \
+	patch --no-backup-if-mismatch -p4 < patches/customize-deployment.patch
diff --git a/packages/system/multus/patches/customize-deployment.patch b/packages/system/multus/patches/customize-deployment.patch
new file mode 100644
index 00000000..7ea3aeeb
--- /dev/null
+++ b/packages/system/multus/patches/customize-deployment.patch
@@ -0,0 +1,49 @@
+--- a/packages/system/multus/templates/multus-daemonset-thick.yml
++++ b/packages/system/multus/templates/multus-daemonset-thick.yml
+@@ -93,19 +93,19 @@ roleRef:
+ subjects:
+   - kind: ServiceAccount
+     name: multus
+-    namespace: kube-system
++    namespace: cozy-multus
+ ---
+ apiVersion: v1
+ kind: ServiceAccount
+ metadata:
+   name: multus
+-  namespace: kube-system
++  namespace: cozy-multus
+ ---
+ kind: ConfigMap
+ apiVersion: v1
+ metadata:
+   name: multus-daemon-config
+-  namespace: kube-system
++  namespace: cozy-multus
+   labels:
+     tier: node
+     app: multus
+@@ -125,8 +125,8 @@ data:
+ apiVersion: apps/v1
+ kind: DaemonSet
+ metadata:
+-  name: kube-multus-ds
+-  namespace: kube-system
++  name: cozy-multus
++  namespace: cozy-multus
+   labels:
+     tier: node
+     app: multus
+@@ -159,10 +159,10 @@ spec:
+           resources:
+             requests:
+               cpu: "100m"
+-              memory: "50Mi"
++              memory: "100Mi"
+             limits:
+               cpu: "100m"
+-              memory: "50Mi"
++              memory: "900Mi"
+           securityContext:
+             privileged: true
+           terminationMessagePolicy: FallbackToLogsOnError
diff --git a/packages/system/multus/templates/multus-daemonset-thick.yml b/packages/system/multus/templates/multus-daemonset-thick.yml
index 7d99ab98..ba7eedfb 100644
--- a/packages/system/multus/templates/multus-daemonset-thick.yml
+++ b/packages/system/multus/templates/multus-daemonset-thick.yml
@@ -162,7 +162,7 @@ spec:
               memory: "100Mi"
             limits:
               cpu: "100m"
-              memory: "300Mi"
+              memory: "900Mi"
           securityContext:
             privileged: true
           terminationMessagePolicy: FallbackToLogsOnError