add: k8s-csi-s3 (#529)

* K8s csi s3 (#1)

* feat: Add CSI S3 stack with values and examples

This commit adds the CSI S3 stack to the repository. It includes the values.yml file, uninstall script, upgrade script, and deployment script. It also includes examples for a pod and a persistent volume claim.

* fix: readme formatting tweaks

* chore: Update namespace in CSI S3 deploy, uninstall, and upgrade scripts

* fix: we don't need any custom values

* chore: tidy readme

* chore: fix readme

* chore: readme fixes

* chore: Update DigitalOcean Spaces Object Storage link in README.md

* chore: Update DigitalOcean Spaces Object Storage link in README.md

* chore: Update DigitalOcean Spaces Object Storage link in README.md

* chore: Update DigitalOcean Spaces Object Storage link in README.md

* chore: Update namespace in CSI S3 deploy script

* chore: Update CSI S3 README.md with correct information about dynamically provisioned PVC

* chore: Update CSI S3 README.md with correct information about dynamically provisioned PVC

* chore: Update provisioner logs command in CSI S3 README.md

stacks/csi-s3/README.md

@@ -0,0 +1,225 @@
+# k8s-csi-s3
+
+[k8s-csi-s3](https://github.com/yandex-cloud/k8s-csi-s3) allows you to use a DigitalOcean Spaces Object Storage bucket as ReadWriteMany (RWX) storage for a Kubernetes Pod with DOKS (DigitalOcean Kubernetes). By default, csi-s3 will create a new bucket per volume. The bucket name will match that of the volume ID. Under the hood it uses [GeeseFS](https://github.com/yandex-cloud/geesefs) which allows you to mount an S3 bucket as a file system.
+
+**Prerequisites**
+
+1. A DigitalOcean [Spaces Object Storage subscription](https://docs.digitalocean.com/products/spaces/how-to/create/)
+2. A Spaces [API Access Key](https://docs.digitalocean.com/products/spaces/how-to/manage-access/#access-keys)
+
+**Note:** As S3 is not a real file system there are some [limitations](https://github.com/yandex-cloud/geesefs#posix-compatibility-matrix) to consider.
+
+> *[DigitalOcean Spaces Object Storage](https://www.digitalocean.com/products/spaces) is an S3-compatible object storage service that lets you store and serve large amounts of data. Each Space is a bucket for you to store and serve files. The built-in Spaces CDN minimizes page load times and improves performance.*
+
+## About GeeseFS
+
+> *Finally, an exemplary FUSE FS implementation over S3*
+
+- [GeeseFS](https://github.com/yandex-cloud/geesefs) allows you to mount an S3 bucket as a file system.
+- FUSE file systems based on S3 typically have performance problems, especially with small files and metadata operations.
+- GeeseFS **attempts to solve these problems** by using aggressive parallelism and asynchrony.
+- GeeseFS is stable enough to pass most applicable xfstests, including dirstress/fsstress stress-tests (generic/007, generic/011, generic/013).
+- [Benchmarks](#Benchmarks) compared to rclone+cache, goofys and s3fs.
+
+## k8s-csi-s3 Diagram
+
+The following diagram shows how k8s-csi-s3 works on a DigitalOcean Kubernetes cluster (DOKS) (based on the example used in the getting started section):
+
+<img src="assets/images/k8s-csi-s3-doks.png" alt="k8s-csi-s3 Diagram" width="600">
+
+## Software included
+
+
+| Package    | License                                                                      |
+| ------------ | ------------------------------------------------------------------------------ |
+| k8s-csi-s3 | [Apache 2.0](https://github.com/yandex-cloud/k8s-csi-s3/blob/master/LICENSE) |
+
+## Getting Started
+
+You can connect to your DigitalOcean Kubernetes cluster by following our [how-to guide](https://www.digitalocean.com/docs/kubernetes/how-to/connect-to-cluster).
+
+### Using k8s-csi-s3 for the first time
+
+1. First, let's check that the 1-Click deployed succesfully with: `kubectl get storageclasses.storage.k8s.io --output name`, we should see a new StorageClass called `csi-s3`
+
+```text
+storageclass.storage.k8s.io/csi-s3
+storageclass.storage.k8s.io/do-block-storage
+storageclass.storage.k8s.io/do-block-storage-retain
+storageclass.storage.k8s.io/do-block-storage-xfs
+storageclass.storage.k8s.io/do-block-storage-xfs-retain
+```
+
+2. Create a secret in your cluster to enable k8s-csi-s3 to authenticate with your DigitalOcean Spaces account
+
+Update the `endpoint` URL to match the region of your DOKS cluster (or the nearest Spaces region). For optimal performance, ensure that your DOKS cluster and Spaces buckets are located in the same region to minimize latency.
+
+Spaces availability per region is detailed [here.](https://docs.digitalocean.com/products/platform/availability-matrix/#other-product-availability)
+
+`kubectl apply -f secret.yaml --force`
+
+```yaml
+apiVersion: v1
+kind: Secret
+metadata:
+  name: csi-s3-secret
+  namespace: csi-s3
+stringData:
+  accessKeyID: <YOUR_ACCESS_KEY_ID>
+  secretAccessKey: <YOUR_SECRET_ACCESS_KEY>
+  endpoint: https://ams3.digitaloceanspaces.com
+```
+
+### Using k8s-csi-s3 with your workloads
+
+#### Deploy an example PVC
+
+Create a Dynamically provisioned PVC using the new storage class. A DigitalOcean Spaces bucket will be created automatically for the PV and removed when the PV is removed.
+
+`kubectl create -f https://raw.githubusercontent.com/digitalocean/marketplace-kubernetes/master/stacks/csi-s3/assets/examples/pvc.yaml`
+
+```yaml
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: csi-s3-pvc
+  namespace: default
+spec:
+  accessModes:
+  - ReadWriteMany
+  resources:
+    requests:
+      storage: 5Gi
+  storageClassName: csi-s3
+```
+
+Check if the PVC has been bound with `kubectl get pvc csi-s3-pvc`
+
+```text
+NAME         STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   VOLUMEATTRIBUTESCLASS   AGE
+csi-s3-pvc   Bound    pvc-0e100142-1836-4a6e-8590-87fd78e26d2b   5Gi        RWX            csi-s3         <unset>                 31m
+```
+
+At this stage you'll see a new bucket created in your DigitalOcean account:
+
+<img src="assets/images/spaces-console.png" alt="Spaces Console" style="max-width: 600px;">
+
+And you'll see the S3 bucket created in the provisioner logs `kubectl logs -l app=csi-s3-provisioner -n csi-s3`
+
+```text
+Defaulted container "csi-provisioner" out of: csi-provisioner, csi-s3
+I0615 14:31:09.754459       1 reflector.go:255] Listing and watching *v1.PersistentVolume from sigs.k8s.io/sig-storage-lib-external-provisioner/v6/controller/controller.go:872
+I0615 14:31:09.853777       1 shared_informer.go:270] caches populated
+I0615 14:31:09.854955       1 controller.go:887] Started provisioner controller ru.yandex.s3.csi_csi-s3-provisioner-0_c9b0cf7a-ff61-4d4b-9344-06d5c82f050b!
+I0615 14:34:27.162321       1 controller.go:1335] provision "default/csi-s3-pvc" class "csi-s3": started
+I0615 14:34:27.163188       1 event.go:282] Event(v1.ObjectReference{Kind:"PersistentVolumeClaim", Namespace:"default", Name:"csi-s3-pvc", UID:"fcf035ac-7942-4708-a187-e209c411c5e1", APIVersion:"v1", ResourceVersion:"3581", FieldPath:""}): type: 'Normal' reason: 'Provisioning' External provisioner is provisioning volume for claim "default/csi-s3-pvc"
+I0615 14:34:34.140206       1 controller.go:762] create volume rep: {CapacityBytes:5368709120 VolumeId:pvc-fcf035ac-7942-4708-a187-e209c411c5e1 VolumeContext:map[capacity:5368709120 mounter:geesefs options:--memory-limit 1000 --dir-mode 0777 --file-mode 0666] ContentSource:<nil> AccessibleTopology:[] XXX_NoUnkeyedLiteral:{} XXX_unrecognized:[] XXX_sizecache:0}
+I0615 14:34:34.140450       1 controller.go:838] successfully created PV pvc-fcf035ac-7942-4708-a187-e209c411c5e1 for PVC csi-s3-pvc and csi volume name pvc-fcf035ac-7942-4708-a187-e209c411c5e1
+I0615 14:34:34.140637       1 controller.go:1442] provision "default/csi-s3-pvc" class "csi-s3": volume "pvc-fcf035ac-7942-4708-a187-e209c411c5e1" provisioned
+I0615 14:34:34.140778       1 controller.go:1459] provision "default/csi-s3-pvc" class "csi-s3": succeeded
+I0615 14:34:34.155331       1 event.go:282] Event(v1.ObjectReference{Kind:"PersistentVolumeClaim", Namespace:"default", Name:"csi-s3-pvc", UID:"fcf035ac-7942-4708-a187-e209c411c5e1", APIVersion:"v1", ResourceVersion:"3581", FieldPath:""}): type: 'Normal' reason: 'ProvisioningSucceeded' Successfully provisioned volume pvc-fcf035ac-7942-4708-a187-e209c411c5e1
+```
+
+#### Deploy an example Pod
+
+1. Create a test pod that mounts your volume: `kubectl create -f https://raw.githubusercontent.com/digitalocean/marketplace-kubernetes/master/stacks/csi-s3/assets/examples/pod.yaml`
+
+```yaml
+apiVersion: v1
+kind: Pod
+metadata:
+  name: csi-s3-test-nginx
+  namespace: default
+spec:
+  containers:
+   - name: csi-s3-test-nginx
+     image: nginx
+     volumeMounts:
+       - mountPath: /usr/share/nginx/html/s3
+         name: webroot
+  volumes:
+   - name: webroot
+     persistentVolumeClaim:
+       claimName: csi-s3-pvc
+       readOnly: false
+```
+
+If the pod can start, everything should be working.
+
+**Test the mount**
+
+1. Enter into the example pod container using `kubectl exec -it pod/csi-s3-test-nginx -- bash`
+
+This will give you shell inside the nginx container, now we can check to see our S3 Fuse mount using `mount | grep fuse`
+
+```text
+pvc-035763df-0488-4941-9a34-f637292eb95c: on /usr/share/nginx/html/s3 type fuse.geesefs (rw,nosuid,nodev,relatime,user_id=65534,group_id=0,default_permissions,allow_other)
+```
+
+Create a file in the directory that we mounted the PV to with `touch /usr/share/nginx/html/s3/hello_world`, you'll see a blank `hello_world` created in your bucket too
+
+<img src="assets/images/spaces-files-listing.png" alt="hello world file" style="max-width: 600px;">
+
+**For additional configuration options such as using an existing bucket see: [Additional Configuration](https://github.com/yandex-cloud/k8s-csi-s3/tree/master?tab=readme-ov-file#additional-configuration)**
+
+## Benchmarks
+
+Spaces Object Storage limits are [detailed here](https://docs.digitalocean.com/products/spaces/details/limits/)
+
+### Tests using `dd` and `fio`
+
+- Use[`gen_small.py`](https://github.com/yandex-cloud/geesefs/blob/master/bench/gen_small.py) to create 6400 files, sized 0.5-300KB, 30KB on average, sharded over 1024 dirs with 2 level deep nesting
+  - Copy this directory
+  - Delete this directory
+- Write 1GB and 5GB files to Spaces Object Storage
+- Read 1GB and 5GB files from Spaces Object Storage
+
+
+| Test                 | Command                                                      | Time      | Detail    |
+| ---------------------- | -------------------------------------------------------------- | ----------- | ----------- |
+| Create 6400 files    | python3 gen_small.py /mnt/s3/test1                           | 11.3 s    |           |
+| Copy the directory   | cp -r test1 test2                                            | 7.8 s     |           |
+| Delete the directory | rm -r test1                                                  | 1.2 s     |           |
+| Write 1GB            | dd if=/dev/zero of=largefile bs=1MB count=1000 oflag=direct  | 6.8215 s  | 147 MB/s  |
+| Read 1GB             | dd if=largefile of=/dev/null bs=1MB iflag=direct             | 2.02862 s | 493 MB/s  |
+| Write 5GB            | dd if=/dev/zero of=largefile5 bs=1MB count=5000 oflag=direct | 56.2905 s | 88.8 MB/s |
+| Read 5GB             | dd if=largefile5 of=/dev/null bs=1MB iflag=direct            | 7.60369 s | 658 MB/s  |
+
+### Dbench
+
+Benchmarks ran using [dbench](https://github.com/jkpedo/dbench/tree/doks)
+
+#### Native volume benchmarks
+
+Below are the results of an `s-2vcpu-4gb-amd` worker node with a 1TB Volume attached using the `do-block-storage` storageClass
+
+```text
+==================
+= Dbench Summary =
+==================
+Random Read/Write IOPS: 9986/9987. BW: 384MiB/s / 387MiB/s
+Average Latency (usec) Read/Write: 750.36/399.11
+Sequential Read/Write: 384MiB/s / 395MiB/s
+Mixed Random Read/Write IOPS: 7515/2471
+```
+
+#### S3 benchmarks
+
+```text
+==================
+= Dbench Summary =
+==================
+Random Read/Write IOPS: 126/1431. BW: 15.4MiB/s / 47.2MiB/s
+Average Latency (ms) Read/Write: 36.1/3.1
+Sequential Read/Write: 64.9MiB/s / 61.2MiB/s
+Mixed Random Read/Write IOPS: 46/14
+```
+
+## Upgrade instructions
+
+`helm repo update`
+`helm upgrade csi-s3 yandex-s3/csi-s3 --namespace csi-s3`
+
+## Uninstall instructions
+
+`helm uninstall csi-s3 --namespace csi-s3`

stacks/csi-s3/assets/examples/pod.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: csi-s3-test-nginx
+  namespace: default
+spec:
+  containers:
+   - name: csi-s3-test-nginx
+     image: nginx
+     volumeMounts:
+       - mountPath: /usr/share/nginx/html/s3
+         name: webroot
+  volumes:
+   - name: webroot
+     persistentVolumeClaim:
+       claimName: csi-s3-pvc
+       readOnly: false

stacks/csi-s3/assets/examples/pvc.yaml

@@ -0,0 +1,15 @@
+# Dynamically provisioned PVC:
+# A bucket or path inside bucket will be created automatically
+# for the PV and removed when the PV will be removed
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: csi-s3-pvc
+  namespace: default
+spec:
+  accessModes:
+  - ReadWriteMany
+  resources:
+    requests:
+      storage: 5Gi
+  storageClassName: csi-s3

stacks/csi-s3/deploy.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+set -e
+
+################################################################################
+# repo
+################################################################################
+helm repo add yandex-s3 https://yandex-cloud.github.io/k8s-csi-s3/charts
+helm repo update > /dev/null
+
+################################################################################
+# chart
+################################################################################
+STACK="csi-s3"
+CHART="yandex-s3/csi-s3"
+CHART_VERSION="0.41.0"
+NAMESPACE="csi-s3"
+
+if [ -z "${MP_KUBERNETES}" ]; then
+  # use local version of values.yml
+  ROOT_DIR=$(git rev-parse --show-toplevel)
+  values="$ROOT_DIR/stacks/csi-s3/values.yml"
+else
+  # use github hosted master version of values.yml
+  values="https://raw.githubusercontent.com/digitalocean/marketplace-kubernetes/master/stacks/csi-s3/values.yml"
+fi
+
+helm upgrade "$STACK" "$CHART" \
+  --atomic \
+  --create-namespace \
+  --install \
+  --timeout 8m0s \
+  --namespace "$NAMESPACE" \
+  --values "$values" \
+  --version "$CHART_VERSION"

stacks/csi-s3/uninstall.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -e
+
+################################################################################
+# chart
+################################################################################
+STACK="csi-s3"
+NAMESPACE="csi-s3"
+
+
+helm uninstall "$STACK" \
+  --namespace "$NAMESPACE"

stacks/csi-s3/upgrade.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+set -e
+
+################################################################################
+# repo
+################################################################################
+helm repo add yandex-s3 https://yandex-cloud.github.io/k8s-csi-s3/charts
+helm repo update > /dev/null
+
+################################################################################
+# chart
+################################################################################
+STACK="csi-s3"
+CHART="yandex-s3/csi-s3"
+NAMESPACE="csi-s3"
+
+if [ -z "${MP_KUBERNETES}" ]; then
+    # use local version of values.yml
+    ROOT_DIR=$(git rev-parse --show-toplevel)
+    values="$ROOT_DIR/stacks/csi-s3/values.yml"
+else
+    # use github hosted master version of values.yml
+    values="https://raw.githubusercontent.com/digitalocean/marketplace-kubernetes/master/stacks/csi-s3/values.yml"
+fi
+
+helm upgrade "$STACK" "$CHART" \
+--namespace "$NAMESPACE" \
+--values "$values" \

stacks/csi-s3/values.yml

@@ -0,0 +1,3 @@
+## Chart: yandex-s3/csi-s3
+## Ref: https://github.com/yandex-cloud/k8s-csi-s3/tree/master/deploy/helm/csi-s3
+##