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Add pdb #1

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267bb27
PDB management
bryopsida May 14, 2023
f0fd877
update readme
bryopsida May 14, 2023
52b5504
fix missing metadata
bryopsida May 14, 2023
9e8c723
add null check for presence of podDisruptionObject on pdb template
bryopsida May 20, 2023
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2 changes: 1 addition & 1 deletion couchdb/Chart.yaml
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
apiVersion: v1
name: couchdb
version: 4.3.1
version: 4.4.0
appVersion: 3.3.2
description: A database featuring seamless multi-master sync, that scales from
big data to mobile, with an intuitive HTTP/JSON API and designed for
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12 changes: 8 additions & 4 deletions couchdb/README.md
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Expand Up @@ -18,7 +18,7 @@ storage volumes to each Pod in the Deployment.
```bash
$ helm repo add couchdb https://apache.github.io/couchdb-helm
$ helm install couchdb/couchdb \
--version=4.2.0 \
--version=4.4.0 \
--set allowAdminParty=true \
--set couchdbConfig.couchdb.uuid=$(curl https://www.uuidgenerator.net/api/version4 2>/dev/null | tr -d -)
```
Expand All @@ -44,7 +44,7 @@ Afterwards install the chart replacing the UUID
```bash
$ helm install \
--name my-release \
--version=4.2.0 \
--version=4.4.0 \
--set couchdbConfig.couchdb.uuid=decafbaddecafbaddecafbaddecafbad \
couchdb/couchdb
```
Expand Down Expand Up @@ -78,7 +78,7 @@ and then install the chart while overriding the `createAdminSecret` setting:
```bash
$ helm install \
--name my-release \
--version=4.2.0 \
--version=4.4.0 \
--set createAdminSecret=false \
--set couchdbConfig.couchdb.uuid=decafbaddecafbaddecafbaddecafbad \
couchdb/couchdb
Expand Down Expand Up @@ -133,7 +133,7 @@ version semantics. You can upgrade directly from `stable/couchdb` to this chart

```bash
$ helm repo add couchdb https://apache.github.io/couchdb-helm
$ helm upgrade my-release --version=4.2.0 couchdb/couchdb
$ helm upgrade my-release --version=4.4.0 couchdb/couchdb
```

## Configuration
Expand Down Expand Up @@ -193,6 +193,10 @@ A variety of other parameters are also configurable. See the comments in the
| `persistentVolume.volumeName` | |
| `persistentVolume.claimName` | |
| `persistentVolume.volumeSource` | |
| `persistentVolume.annotations` | {} |
| `podDisruptionBudget.enabled` | false |
| `podDisruptionBudget.minAvailable` | nil |
| `podDisruptionBudget.maxUnavailable` | 1 |
| `podManagementPolicy` | Parallel |
| `affinity` | |
| `topologySpreadConstraints` | |
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3 changes: 3 additions & 0 deletions couchdb/README.md.gotmpl
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Expand Up @@ -179,6 +179,9 @@ A variety of other parameters are also configurable. See the comments in the
| `persistentVolume.accessModes` | ReadWriteOnce |
| `persistentVolume.storageClass` | Default for the Kube cluster |
| `persistentVolume.annotations` | {} |
| `podDisruptionBudget.enabled` | false |
| `podDisruptionBudget.minAvailable` | nil |
| `podDisruptionBudget.maxUnavailable` | 1 |
| `podManagementPolicy` | Parallel |
| `affinity` | |
| `topologySpreadConstraints` | |
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21 changes: 21 additions & 0 deletions couchdb/templates/pdb.yaml
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@@ -0,0 +1,21 @@
{{- if and .Values.podDisruptionBudget .Values.podDisruptionBudget.enabled }}
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
name: "{{ .Release.Name }}-pdb"
labels:
app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
app.kubernetes.io/instance: {{ .Release.Name | quote }}
app.kubernetes.io/version: {{ .Chart.AppVersion }}
helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
spec:
{{- if .Values.podDisruptionBudget.minAvailable }}
minAvailable: {{ .Values.podDisruptionBudget.minAvailable }}
{{- end }}
{{- if .Values.podDisruptionBudget.maxUnavailable }}
maxUnavailable: {{ .Values.podDisruptionBudget.maxUnavailable }}
{{- end }}
selector:
matchLabels:
{{ include "couchdb.ss.selector" . | indent 6 }}
{{- end }}
7 changes: 7 additions & 0 deletions couchdb/values.yaml
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Expand Up @@ -221,6 +221,13 @@ readinessProbe:
successThreshold: 1
timeoutSeconds: 1

# Control an optional pod disruption budget
podDisruptionBudget:
# toggle creation of pod disruption budget, disabled by default
enabled: false
# minAvailable: 1
maxUnavailable: 1

# CouchDB 3.2.0 adds in a metrics endpoint on the path `/_node/_local/_prometheus`.
# Optionally, a standalone, unauthenticated port can be exposed for these metrics.
prometheusPort:
Expand Down