From 82479e5544fe4aae7e54fcc5bc2c0a685e85ee1f Mon Sep 17 00:00:00 2001
From: Lev Kokotov <lev.kokotov@gmail.com>
Date: Fri, 18 Sep 2026 15:08:53 -0700
Subject: [PATCH 1/2] feat: conditional redis pdb config

---
 Chart.yaml               |  2 +-
 README.md                | 11 +++++++++++
 templates/redis-pdb.yaml |  2 +-
 values.yaml              |  4 ++++
 4 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/Chart.yaml b/Chart.yaml
index fa9e103..b7de89d 100644
--- a/Chart.yaml
+++ b/Chart.yaml
@@ -3,4 +3,4 @@ name: pgdog-control
 description: PgDog Control
 type: application
 version: 0.3.2
-appVersion: "f477677f"
+appVersion: "80895477"
diff --git a/README.md b/README.md
index bab830c..98f9eed 100644
--- a/README.md
+++ b/README.md
@@ -71,12 +71,23 @@ redis:
 | Option                    | Description                                                                                                                                         |
 | ------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- |
 | `redis.enabled`           | Deploy the chart-managed Redis resources (bool, default `true`).                                                                                    |
+| `redis.pdb.enabled`       | Create the Redis PodDisruptionBudget with `minAvailable: 1` (bool, default `true`).                                                                  |
 | `redis.url`               | Redis connection string written to `[redis].url` in `control.toml`. When empty, defaults to the chart-managed Redis Service (string, default `""`). |
 | `redis.image.repository`  | Redis image repository (string, default `redis`).                                                                                                   |
 | `redis.image.tag`         | Redis image tag (string, default `7-alpine`).                                                                                                       |
 | `redis.image.pullPolicy`  | Redis image pull policy (string, default `IfNotPresent`).                                                                                           |
 | `redis.image.pullSecrets` | Image pull secrets attached to the Redis pod (list, default `[]`).                                                                                  |
 
+The Redis PodDisruptionBudget blocks voluntary evictions of the single Redis replica, including during node drains and managed node upgrades. Set `redis.pdb.enabled: false` to allow these evictions while keeping Redis deployed:
+
+```yaml
+redis:
+  pdb:
+    enabled: false
+```
+
+Redis will be unavailable while its pod is replaced. The pod retains its `cluster-autoscaler.kubernetes.io/safe-to-evict: "false"` annotation.
+
 ### Raft
 
 Enable Raft with a top-level setting:
diff --git a/templates/redis-pdb.yaml b/templates/redis-pdb.yaml
index e886136..937ea76 100644
--- a/templates/redis-pdb.yaml
+++ b/templates/redis-pdb.yaml
@@ -1,4 +1,4 @@
-{{- if .Values.redis.enabled }}
+{{- if and .Values.redis.enabled .Values.redis.pdb.enabled }}
 apiVersion: policy/v1
 kind: PodDisruptionBudget
 metadata:
diff --git a/values.yaml b/values.yaml
index 31fc2fa..eb05c43 100644
--- a/values.yaml
+++ b/values.yaml
@@ -197,6 +197,10 @@ redis:
   # Deploy the chart-managed Redis instance. Disable this when using an
   # external Redis and set redis.url to its connection string.
   enabled: true
+  pdb:
+    # Keep at least one Redis pod available. With a single replica, this
+    # blocks node drains; disable to allow Redis to be evicted during maintenance.
+    enabled: true
   # Connection string written to [redis].url in control.toml. When empty,
   # it points to the chart-managed Redis service.
   url: ""

From 9ef6e215d867e763543d11aaac861a75f807b7a3 Mon Sep 17 00:00:00 2001
From: Lev Kokotov <lev.kokotov@gmail.com>
Date: Fri, 18 Sep 2026 15:09:37 -0700
Subject: [PATCH 2/2] bump chart

---
 Chart.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Chart.yaml b/Chart.yaml
index b7de89d..b1ee17a 100644
--- a/Chart.yaml
+++ b/Chart.yaml
@@ -2,5 +2,5 @@ apiVersion: v2
 name: pgdog-control
 description: PgDog Control
 type: application
-version: 0.3.2
+version: 0.3.3
 appVersion: "80895477"