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kubespray
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add RBD Provisioner Addon (#3667) (#3668) 

Based on the CephFS Provisioner Addon, the following changes have been made:
 - Upstream v2.1.1-k8s1.11
 - Configurable Provisioner replicas
pull/4551/head
Jugwan Eom 2019-04-17 15:14:02 +09:00 committed by Kubernetes Prow Robot
parent b834a28891
commit d83181a2be
19 changed files with 427 additions and 0 deletions
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1
README.md
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@ -124,6 +124,7 @@ Supported Components
- [weave](https://github.com/weaveworks/weave) v2.5.1
- Application
- [cephfs-provisioner](https://github.com/kubernetes-incubator/external-storage) v2.1.0-k8s1.11
- [rbd-provisioner](https://github.com/kubernetes-incubator/external-storage) v2.1.1-k8s1.11
- [cert-manager](https://github.com/jetstack/cert-manager) v0.5.2
- [coredns](https://github.com/coredns/coredns) v1.5.0
- [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v0.21.0

19
inventory/sample/group_vars/k8s-cluster/addons.yml
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@ -56,6 +56,25 @@ cephfs_provisioner_enabled: false
# cephfs_provisioner_claim_root: /volumes
# cephfs_provisioner_deterministic_names: true
# RBD provisioner deployment
rbd_provisioner_enabled: false
# rbd_provisioner_namespace: rbd-provisioner
# rbd_provisioner_replicas: 2
# rbd_provisioner_monitors: "172.24.0.1:6789,172.24.0.2:6789,172.24.0.3:6789"
# rbd_provisioner_pool: kube
# rbd_provisioner_admin_id: admin
# rbd_provisioner_secret_name: ceph-secret-admin
# rbd_provisioner_secret: ceph-key-admin
# rbd_provisioner_user_id: kube
# rbd_provisioner_user_secret_name: ceph-secret-user
# rbd_provisioner_user_secret: ceph-key-user
# rbd_provisioner_user_secret_namespace: rbd-provisioner
# rbd_provisioner_fs_type: ext4
# rbd_provisioner_image_format: "2"
# rbd_provisioner_image_features: layering
# rbd_provisioner_storage_class: rbd
# rbd_provisioner_reclaim_policy: Delete
# Nginx ingress controller deployment
ingress_nginx_enabled: false
# ingress_nginx_host_network: false

7
roles/bootstrap-os/tasks/main.yml
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@ -59,3 +59,10 @@
filter: ansible_hostname
when:
- hostname_changed.changed
- name: "Install ceph-commmon package"
package:
name:
- ceph-common
state: latest
when: rbd_provisioner_enabled|default(false)

11
roles/download/defaults/main.yml
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@ -244,6 +244,8 @@ local_volume_provisioner_image_repo: "quay.io/external_storage/local-volume-prov
local_volume_provisioner_image_tag: "v2.1.0"
cephfs_provisioner_image_repo: "quay.io/external_storage/cephfs-provisioner"
cephfs_provisioner_image_tag: "v2.1.0-k8s1.11"
rbd_provisioner_image_repo: "quay.io/external_storage/rbd-provisioner"
rbd_provisioner_image_tag: "v2.1.1-k8s1.11"
local_path_provisioner_image_repo: "rancher/local-path-provisioner"
local_path_provisioner_image_tag: "v0.0.2"
ingress_nginx_controller_image_repo: "quay.io/kubernetes-ingress-controller/nginx-ingress-controller"
@ -632,6 +634,15 @@ downloads:
groups:
- kube-node
rbd_provisioner:
enabled: "{{ rbd_provisioner_enabled }}"
container: true
repo: "{{ rbd_provisioner_image_repo }}"
tag: "{{ rbd_provisioner_image_tag }}"
sha256: "{{ rbd_provisioner_digest_checksum|default(None) }}"
groups:
- kube-node
local_path_provisioner:
enabled: "{{ local_volume_provisioner_enabled }}"
container: true

6
roles/kubernetes-apps/external_provisioner/meta/main.yml
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@ -16,6 +16,12 @@ dependencies:
- cephfs-provisioner
- external-provisioner
- role: kubernetes-apps/external_provisioner/rbd_provisioner
when: rbd_provisioner_enabled
tags:
- apps
- rbd-provisioner
- external-provisioner
- role: kubernetes-apps/external_provisioner/local_path_provisioner
when: local_path_provisioner_enabled
tags:

79
roles/kubernetes-apps/external_provisioner/rbd_provisioner/README.md 100644
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@ -0,0 +1,79 @@
# RBD Volume Provisioner for Kubernetes 1.5+
`rbd-provisioner` is an out-of-tree dynamic provisioner for Kubernetes 1.5+.
You can use it quickly & easily deploy ceph RBD storage that works almost
anywhere.
It works just like in-tree dynamic provisioner. For more information on how
dynamic provisioning works, see [the docs](http://kubernetes.io/docs/user-guide/persistent-volumes/)
or [this blog post](http://blog.kubernetes.io/2016/10/dynamic-provisioning-and-storage-in-kubernetes.html).
## Development
Compile the provisioner
```console
make
```
Make the container image and push to the registry
```console
make push
```
## Test instruction
* Start Kubernetes local cluster
See https://kubernetes.io/.
* Create a Ceph admin secret
```bash
ceph auth get client.admin 2>&1 |grep "key = " |awk '{print $3'} |xargs echo -n > /tmp/secret
kubectl create secret generic ceph-admin-secret --from-file=/tmp/secret --namespace=kube-system
```
* Create a Ceph pool and a user secret
```bash
ceph osd pool create kube 8 8
ceph auth add client.kube mon 'allow r' osd 'allow rwx pool=kube'
ceph auth get-key client.kube > /tmp/secret
kubectl create secret generic ceph-secret --from-file=/tmp/secret --namespace=kube-system
```
* Start RBD provisioner
The following example uses `rbd-provisioner-1` as the identity for the instance and assumes kubeconfig is at `/root/.kube`. The identity should remain the same if the provisioner restarts. If there are multiple provisioners, each should have a different identity.
```bash
docker run -ti -v /root/.kube:/kube -v /var/run/kubernetes:/var/run/kubernetes --privileged --net=host quay.io/external_storage/rbd-provisioner /usr/local/bin/rbd-provisioner -master=http://127.0.0.1:8080 -kubeconfig=/kube/config -id=rbd-provisioner-1
```
Alternatively, deploy it in kubernetes, see [deployment](deploy/README.md).
* Create a RBD Storage Class
Replace Ceph monitor's IP in [examples/class.yaml](examples/class.yaml) with your own and create storage class:
```bash
kubectl create -f examples/class.yaml
```
* Create a claim
```bash
kubectl create -f examples/claim.yaml
```
* Create a Pod using the claim
```bash
kubectl create -f examples/test-pod.yaml
```
## Acknowledgements
- This provisioner is extracted from [Kubernetes core](https://github.com/kubernetes/kubernetes) with some modifications for this project.

17
roles/kubernetes-apps/external_provisioner/rbd_provisioner/defaults/main.yml 100644
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@ -0,0 +1,17 @@
---
rbd_provisioner_namespace: "rbd-provisioner"
rbd_provisioner_replicas: 2
rbd_provisioner_monitors: ~
rbd_provisioner_pool: kube
rbd_provisioner_admin_id: admin
rbd_provisioner_secret_name: ceph-secret-admin
rbd_provisioner_secret_token: ceph-key-admin
rbd_provisioner_user_id: kube
rbd_provisioner_user_secret_name: ceph-secret-user
rbd_provisioner_user_secret_token: ceph-key-user
rbd_provisioner_user_secret_namespace: rbd-provisioner
rbd_provisioner_fs_type: ext4
rbd_provisioner_image_format: "2"
rbd_provisioner_image_features: layering
rbd_provisioner_storage_class: rbd
rbd_provisioner_reclaim_policy: Delete

79
roles/kubernetes-apps/external_provisioner/rbd_provisioner/tasks/main.yml 100644
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@ -0,0 +1,79 @@
---
- name: RBD Provisioner | Remove legacy addon dir and manifests
file:
path: "{{ kube_config_dir }}/addons/rbd_provisioner"
state: absent
when:
- inventory_hostname == groups['kube-master'][0]
tags:
- upgrade
- name: RBD Provisioner | Remove legacy namespace
shell: |
{{ bin_dir }}/kubectl delete namespace {{ rbd_provisioner_namespace }}
ignore_errors: yes
when:
- inventory_hostname == groups['kube-master'][0]
tags:
- upgrade
- name: RBD Provisioner | Remove legacy storageclass
shell: |
{{ bin_dir }}/kubectl delete storageclass {{ rbd_provisioner_storage_class }}
ignore_errors: yes
when:
- inventory_hostname == groups['kube-master'][0]
tags:
- upgrade
- name: RBD Provisioner | Create addon dir
file:
path: "{{ kube_config_dir }}/addons/rbd_provisioner"
state: directory
owner: root
group: root
mode: 0755
when:
- inventory_hostname == groups['kube-master'][0]
- name: RBD Provisioner | Templates list
set_fact:
rbd_provisioner_templates:
- { name: 00-namespace, file: 00-namespace.yml, type: ns }
- { name: secret-rbd-provisioner, file: secret-rbd-provisioner.yml, type: secret }
- { name: sa-rbd-provisioner, file: sa-rbd-provisioner.yml, type: sa }
- { name: clusterrole-rbd-provisioner, file: clusterrole-rbd-provisioner.yml, type: clusterrole }
- { name: clusterrolebinding-rbd-provisioner, file: clusterrolebinding-rbd-provisioner.yml, type: clusterrolebinding }
- { name: role-rbd-provisioner, file: role-rbd-provisioner.yml, type: role }
- { name: rolebinding-rbd-provisioner, file: rolebinding-rbd-provisioner.yml, type: rolebinding }
- { name: deploy-rbd-provisioner, file: deploy-rbd-provisioner.yml, type: deploy }
- { name: sc-rbd-provisioner, file: sc-rbd-provisioner.yml, type: sc }
rbd_provisioner_templates_for_psp:
- { name: psp-rbd-provisioner, file: psp-rbd-provisioner.yml, type: psp }
- name: RBD Provisioner | Append extra templates to RBD Provisioner Templates list for PodSecurityPolicy
set_fact:
rbd_provisioner_templates: "{{ rbd_provisioner_templates_for_psp + rbd_provisioner_templates }}"
when:
- podsecuritypolicy_enabled
- rbd_provisioner_namespace != "kube-system"
- name: RBD Provisioner | Create manifests
template:
src: "{{ item.file }}.j2"
dest: "{{ kube_config_dir }}/addons/rbd_provisioner/{{ item.file }}"
with_items: "{{ rbd_provisioner_templates }}"
register: rbd_provisioner_manifests
when: inventory_hostname == groups['kube-master'][0]
- name: RBD Provisioner | Apply manifests
kube:
name: "{{ item.item.name }}"
namespace: "{{ rbd_provisioner_namespace }}"
kubectl: "{{ bin_dir }}/kubectl"
resource: "{{ item.item.type }}"
filename: "{{ kube_config_dir }}/addons/rbd_provisioner/{{ item.item.file }}"
state: "latest"
with_items: "{{ rbd_provisioner_manifests.results }}"
when: inventory_hostname == groups['kube-master'][0]

7
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/00-namespace.yml.j2 100644
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@ -0,0 +1,7 @@
---
apiVersion: v1
kind: Namespace
metadata:
name: {{ rbd_provisioner_namespace }}
labels:
name: {{ rbd_provisioner_namespace }}

30
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/clusterrole-rbd-provisioner.yml.j2 100644
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@ -0,0 +1,30 @@
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: rbd-provisioner
namespace: {{ rbd_provisioner_namespace }}
rules:
- apiGroups: [""]
resources: ["persistentvolumes"]
verbs: ["get", "list", "watch", "create", "delete"]
- apiGroups: [""]
resources: ["persistentvolumeclaims"]
verbs: ["get", "list", "watch", "update"]
- apiGroups: ["storage.k8s.io"]
resources: ["storageclasses"]
verbs: ["get", "list", "watch"]
- apiGroups: [""]
resources: ["events"]
verbs: ["create", "update", "patch"]
- apiGroups: [""]
resources: ["services"]
resourceNames: ["kube-dns","coredns"]
verbs: ["list", "get"]
- apiGroups: [""]
resources: ["secrets"]
verbs: ["get", "create", "delete"]
- apiGroups: ["policy"]
resourceNames: ["rbd-provisioner"]
resources: ["podsecuritypolicies"]
verbs: ["use"]

13
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/clusterrolebinding-rbd-provisioner.yml.j2 100644
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@ -0,0 +1,13 @@
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: rbd-provisioner
subjects:
- kind: ServiceAccount
name: rbd-provisioner
namespace: {{ rbd_provisioner_namespace }}
roleRef:
kind: ClusterRole
name: rbd-provisioner
apiGroup: rbac.authorization.k8s.io

42
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/deploy-rbd-provisioner.yml.j2 100644
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@ -0,0 +1,42 @@
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: rbd-provisioner
namespace: {{ rbd_provisioner_namespace }}
labels:
app: rbd-provisioner
version: {{ rbd_provisioner_image_tag }}
spec:
replicas: {{ rbd_provisioner_replicas }}
strategy:
type: Recreate
selector:
matchLabels:
app: rbd-provisioner
version: {{ rbd_provisioner_image_tag }}
template:
metadata:
labels:
app: rbd-provisioner
version: {{ rbd_provisioner_image_tag }}
spec:
{% if kube_version is version('v1.11.1', '>=') %}
priorityClassName: {% if rbd_provisioner_namespace == 'kube-system' %}system-cluster-critical{% else %}k8s-cluster-critical{% endif %}{{''}}
{% endif %}
serviceAccount: rbd-provisioner
containers:
- name: rbd-provisioner
image: {{ rbd_provisioner_image_repo }}:{{ rbd_provisioner_image_tag }}
imagePullPolicy: {{ k8s_image_pull_policy }}
env:
- name: PROVISIONER_NAME
value: ceph.com/rbd
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
command:
- "/usr/local/bin/rbd-provisioner"
args:
- "-id=${POD_NAME}"

45
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/psp-rbd-provisioner.yml.j2 100644
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@ -0,0 +1,45 @@
---
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
name: rbd-provisioner
annotations:
seccomp.security.alpha.kubernetes.io/defaultProfileName: 'docker/default'
seccomp.security.alpha.kubernetes.io/allowedProfileNames: 'docker/default'
{% if apparmor_enabled %}
apparmor.security.beta.kubernetes.io/defaultProfileName: 'runtime/default'
apparmor.security.beta.kubernetes.io/allowedProfileNames: 'runtime/default'
{% endif %}
labels:
kubernetes.io/cluster-service: 'true'
addonmanager.kubernetes.io/mode: Reconcile
spec:
privileged: false
allowPrivilegeEscalation: false
requiredDropCapabilities:
- ALL
volumes:
- 'configMap'
- 'emptyDir'
- 'projected'
- 'secret'
- 'downwardAPI'
- 'persistentVolumeClaim'
hostNetwork: false
hostIPC: false
hostPID: false
runAsUser:
rule: 'RunAsAny'
seLinux:
rule: 'RunAsAny'
supplementalGroups:
rule: 'MustRunAs'
ranges:
- min: 1
max: 65535
fsGroup:
rule: 'MustRunAs'
ranges:
- min: 1
max: 65535
readOnlyRootFilesystem: false

13
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/role-rbd-provisioner.yml.j2 100644
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@ -0,0 +1,13 @@
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: rbd-provisioner
namespace: {{ rbd_provisioner_namespace }}
rules:
- apiGroups: [""]
resources: ["secrets"]
verbs: ["get"]
- apiGroups: [""]
resources: ["endpoints"]
verbs: ["get", "list", "watch", "create", "update", "patch"]

14
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/rolebinding-rbd-provisioner.yml.j2 100644
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@ -0,0 +1,14 @@
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: rbd-provisioner
namespace: {{ rbd_provisioner_namespace }}
subjects:
- kind: ServiceAccount
name: rbd-provisioner
namespace: {{ rbd_provisioner_namespace }}
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: rbd-provisioner

6
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/sa-rbd-provisioner.yml.j2 100644
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@ -0,0 +1,6 @@
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: rbd-provisioner
namespace: {{ rbd_provisioner_namespace }}

19
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/sc-rbd-provisioner.yml.j2 100644
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@ -0,0 +1,19 @@
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: {{ rbd_provisioner_storage_class }}
provisioner: ceph.com/rbd
reclaimPolicy: {{ rbd_provisioner_reclaim_policy }}
parameters:
monitors: {{ rbd_provisioner_monitors }}
adminId: {{ rbd_provisioner_admin_id }}
adminSecretNamespace: {{ rbd_provisioner_namespace }}
adminSecretName: {{ rbd_provisioner_secret_name }}
pool: {{ rbd_provisioner_pool }}
userId: {{ rbd_provisioner_user_id }}
userSecretNamespace: {{ rbd_provisioner_user_secret_namespace }}
userSecretName: {{ rbd_provisioner_user_secret_name }}
fsType: "{{ rbd_provisioner_fs_type }}"
imageFormat: "{{ rbd_provisioner_image_format }}"
imageFeatures: {{ rbd_provisioner_image_features }}

18
roles/kubernetes-apps/external_provisioner/rbd_provisioner/templates/secret-rbd-provisioner.yml.j2 100644
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@ -0,0 +1,18 @@
---
kind: Secret
apiVersion: v1
metadata:
name: {{ rbd_provisioner_secret_name }}
namespace: {{ rbd_provisioner_namespace }}
type: Opaque
data:
secret: {{ rbd_provisioner_secret | b64encode }}
---
kind: Secret
apiVersion: v1
metadata:
name: {{ rbd_provisioner_user_secret_name }}
namespace: {{ rbd_provisioner_user_secret_namespace }}
type: Opaque
data:
key: {{ rbd_provisioner_user_secret | b64encode }}

1
roles/kubespray-defaults/defaults/main.yaml
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@ -278,6 +278,7 @@ enable_network_policy: true
local_volume_provisioner_enabled: "{{ local_volumes_enabled | default('false') }}"
persistent_volumes_enabled: false
cephfs_provisioner_enabled: false
rbd_provisioner_enabled: false
ingress_nginx_enabled: false
cert_manager_enabled: false
expand_persistent_volumes: false