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Change MetalLB to one of addons (#6238)

Browse source 
This changes MetalLB contrib to one of addons for deploying MetalLB with
Kubernetes cluster deployment. By the default, Kubespray doesn't deploy
MetalLB addon.
This commit is contained in:
Kenichi Omichi 2020-06-29 15:11:59 -07:00 committed by GitHub
parent 8213b1802b
commit 25bab0e976
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 482 additions and 320 deletions
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1
contrib/metallb/library
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@ -1 +0,0 @@
../../library

12
contrib/metallb/metallb.yml
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@ -1,12 +0,0 @@
---
- hosts: bastion[0]
gather_facts: False
roles:
- { role: kubespray-defaults}
- { role: bastion-ssh-config, tags: ["localhost", "bastion"]}
- hosts: kube-master[0]
tags:
- "provision"
roles:
- { role: kubespray-defaults}
- { role: provision }

16
contrib/metallb/roles/provision/defaults/main.yml
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@ -1,16 +0,0 @@
---
metallb:
ip_range:
- "10.5.0.50-10.5.0.99"
protocol: "layer2"
# additional_address_pools:
# kube_service_pool:
# ip_range:
# - 10.5.1.50-10.5.1.99"
# protocol: "layer2"
# auto_assign: false
limits:
cpu: "100m"
memory: "100Mi"
port: "7472"
version: v0.9.3

25
contrib/metallb/roles/provision/templates/metallb-config.yml.j2
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@ -1,25 +0,0 @@
---
apiVersion: v1
kind: ConfigMap
metadata:
namespace: metallb-system
name: config
data:
config: |
address-pools:
- name: loadbalanced
protocol: {{ metallb.protocol }}
addresses:
{% for ip_range in metallb.ip_range %}
- {{ ip_range }}
{% endfor %}
{% if metallb.additional_address_pools is defined %}{% for pool in metallb.additional_address_pools %}
- name: {{ pool }}
protocol: {{ metallb.additional_address_pools[pool].protocol }}
addresses:
{% for ip_range in metallb.additional_address_pools[pool].ip_range %}
- {{ ip_range }}
{% endfor %}
auto-assign: {{ metallb.additional_address_pools[pool].auto_assign }}
{% endfor %}
{% endif %}

266
contrib/metallb/roles/provision/templates/metallb.yml.j2
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@ -1,266 +0,0 @@
apiVersion: v1
kind: Namespace
metadata:
name: metallb-system
labels:
app: metallb
---
apiVersion: v1
kind: ServiceAccount
metadata:
namespace: metallb-system
name: controller
labels:
app: metallb
---
apiVersion: v1
kind: ServiceAccount
metadata:
namespace: metallb-system
name: speaker
labels:
app: metallb
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: metallb-system:controller
labels:
app: metallb
rules:
- apiGroups: [""]
resources: ["services"]
verbs: ["get", "list", "watch", "update"]
- apiGroups: [""]
resources: ["services/status"]
verbs: ["update"]
- apiGroups: [""]
resources: ["events"]
verbs: ["create", "patch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: metallb-system:speaker
labels:
app: metallb
rules:
- apiGroups: [""]
resources: ["services", "endpoints", "nodes"]
verbs: ["get", "list", "watch"]
- apiGroups: [""]
resources: ["events"]
verbs: ["create"]
{% if podsecuritypolicy_enabled %}
- apiGroups: ["policy"]
resourceNames: ["metallb"]
resources: ["podsecuritypolicies"]
verbs: ["use"]
---
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
name: metallb
annotations:
seccomp.security.alpha.kubernetes.io/defaultProfileName: 'runtime/default'
seccomp.security.alpha.kubernetes.io/allowedProfileNames: 'runtime/default'
{% if apparmor_enabled %}
apparmor.security.beta.kubernetes.io/defaultProfileName: 'runtime/default'
apparmor.security.beta.kubernetes.io/allowedProfileNames: 'runtime/default'
{% endif %}
labels:
app: metallb
spec:
privileged: true
allowPrivilegeEscalation: false
allowedCapabilities:
- net_raw
volumes:
- secret
hostNetwork: true
hostPorts:
- min: {{ metallb.port }}
max: {{ metallb.port }}
hostIPC: false
hostPID: false
runAsUser:
rule: 'RunAsAny'
seLinux:
rule: 'RunAsAny'
supplementalGroups:
rule: 'RunAsAny'
fsGroup:
rule: 'RunAsAny'
readOnlyRootFilesystem: true
{% endif %}
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
namespace: metallb-system
name: config-watcher
labels:
app: metallb
rules:
- apiGroups: [""]
resources: ["configmaps"]
verbs: ["get", "list", "watch"]
- apiGroups: [""]
resources: ["events"]
verbs: ["create"]
---
## Role bindings
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: metallb-system:controller
labels:
app: metallb
subjects:
- kind: ServiceAccount
name: controller
namespace: metallb-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: metallb-system:controller
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: metallb-system:speaker
labels:
app: metallb
subjects:
- kind: ServiceAccount
name: speaker
namespace: metallb-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: metallb-system:speaker
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
namespace: metallb-system
name: config-watcher
labels:
app: metallb
subjects:
- kind: ServiceAccount
name: controller
- kind: ServiceAccount
name: speaker
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: config-watcher
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
namespace: metallb-system
name: speaker
labels:
app: metallb
component: speaker
spec:
selector:
matchLabels:
app: metallb
component: speaker
template:
metadata:
labels:
app: metallb
component: speaker
annotations:
prometheus.io/scrape: "true"
prometheus.io/port: "{{ metallb.port }}"
spec:
serviceAccountName: speaker
terminationGracePeriodSeconds: 0
hostNetwork: true
containers:
- name: speaker
image: metallb/speaker:{{ metallb.version }}
imagePullPolicy: IfNotPresent
args:
- --port={{ metallb.port }}
- --config=config
env:
- name: METALLB_NODE_NAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
ports:
- name: monitoring
containerPort: {{ metallb.port }}
resources:
limits:
cpu: {{ metallb.limits.cpu }}
memory: {{ metallb.limits.memory }}
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
capabilities:
drop:
- all
add:
- net_raw
---
apiVersion: apps/v1
kind: Deployment
metadata:
namespace: metallb-system
name: controller
labels:
app: metallb
component: controller
spec:
revisionHistoryLimit: 3
selector:
matchLabels:
app: metallb
component: controller
template:
metadata:
labels:
app: metallb
component: controller
annotations:
prometheus.io/scrape: "true"
prometheus.io/port: "{{ metallb.port }}"
spec:
serviceAccountName: controller
terminationGracePeriodSeconds: 0
securityContext:
runAsNonRoot: true
runAsUser: 65534 # nobody
containers:
- name: controller
image: metallb/controller:{{ metallb.version }}
imagePullPolicy: IfNotPresent
args:
- --port={{ metallb.port }}
- --config=config
ports:
- name: monitoring
containerPort: {{ metallb.port }}
resources:
limits:
cpu: {{ metallb.limits.cpu }}
memory: {{ metallb.limits.memory }}
securityContext:
allowPrivilegeEscalation: false
capabilities:
drop:
- all
readOnlyRootFilesystem: true
---

16
inventory/sample/group_vars/k8s-cluster/addons.yml
View file

@ -119,3 +119,19 @@ ingress_alb_enabled: false
# Cert manager deployment
cert_manager_enabled: false
# cert_manager_namespace: "cert-manager"
# MetalLB deployment
metallb_enabled: false
# metallb_ip_range:
# - "10.5.0.50-10.5.0.99"
# metallb_version: v0.9.3
# metallb_protocol: "layer2"
# metallb_port: "7472"
# metallb_limits_cpu: "100m"
# metallb_limits_mem: "100Mi"
# metallb_additional_address_pools:
# kube_service_pool:
# ip_range:
# - "10.5.1.50-10.5.1.99"
# protocol: "layer2"
# auto_assign: false

7
roles/kubernetes-apps/meta/main.yml
View file

@ -97,3 +97,10 @@ dependencies:
- inventory_hostname == groups['kube-master'][0]
tags:
- oci
- role: kubernetes-apps/metallb
when:
- metallb_enabled
- inventory_hostname == groups['kube-master'][0]
tags:
- metallb

0
contrib/metallb/README.md → roles/kubernetes-apps/metallb/README.md
View file

7
roles/kubernetes-apps/metallb/defaults/main.yml Normal file
View file

@ -0,0 +1,7 @@
---
metallb_enabled: false
metallb_version: v0.9.3
metallb_protocol: "layer2"
metallb_port: "7472"
metallb_limits_cpu: "100m"
metallb_limits_mem: "100Mi"

28
contrib/metallb/roles/provision/tasks/main.yml → roles/kubernetes-apps/metallb/tasks/main.yml
View file

@ -5,6 +5,12 @@
when:
- "kube_proxy_mode == 'ipvs' and not kube_proxy_strict_arp"
- name: Kubernetes Apps | Check cluster settings for MetalLB
fail:
msg: "metallb_ip_range is mandatory to be specified for MetalLB"
when:
- metallb_ip_range is not defined or not metallb_ip_range
- name: Kubernetes Apps | Check AppArmor status
command: which apparmor_parser
register: apparmor_status
@ -38,3 +44,25 @@
with_items: "{{ rendering.results }}"
when:
- "inventory_hostname == groups['kube-master'][0]"
- name: Kubernetes Apps | Check existing secret of MetalLB
command: "{{ bin_dir }}/kubectl --kubeconfig /etc/kubernetes/admin.conf -n metallb-system get secret memberlist"
register: metallb_secret
become: true
ignore_errors: yes
when:
- inventory_hostname == groups['kube-master'][0]
- name: Kubernetes Apps | Create random bytes for MetalLB
command: "openssl rand -base64 32"
register: metallb_rand
when:
- inventory_hostname == groups['kube-master'][0]
- metallb_secret.rc != 0
- name: Kubernetes Apps | Install secret of MetalLB if not existing
command: "{{ bin_dir }}/kubectl --kubeconfig /etc/kubernetes/admin.conf -n metallb-system create secret generic memberlist --from-literal=secretkey={{ metallb_rand.stdout }}"
become: true
when:
- inventory_hostname == groups['kube-master'][0]
- metallb_secret.rc != 0

25
roles/kubernetes-apps/metallb/templates/metallb-config.yml.j2 Normal file
View file

@ -0,0 +1,25 @@
---
apiVersion: v1
kind: ConfigMap
metadata:
namespace: metallb-system
name: config
data:
config: |
address-pools:
- name: loadbalanced
protocol: {{ metallb_protocol }}
addresses:
{% for ip_range in metallb_ip_range %}
- {{ ip_range }}
{% endfor %}
{% if metallb_additional_address_pools is defined %}{% for pool in metallb_additional_address_pools %}
- name: {{ pool }}
protocol: {{ metallb_additional_address_pools[pool].protocol }}
addresses:
{% for ip_range in metallb_additional_address_pools[pool].ip_range %}
- {{ ip_range }}
{% endfor %}
auto-assign: {{ metallb_additional_address_pools[pool].auto_assign }}
{% endfor %}
{% endif %}

398
roles/kubernetes-apps/metallb/templates/metallb.yml.j2 Normal file
View file

@ -0,0 +1,398 @@
apiVersion: v1
kind: Namespace
metadata:
name: metallb-system
labels:
app: metallb
---
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
labels:
app: metallb
name: controller
namespace: metallb-system
spec:
allowPrivilegeEscalation: false
allowedCapabilities: []
allowedHostPaths: []
defaultAddCapabilities: []
defaultAllowPrivilegeEscalation: false
fsGroup:
ranges:
- max: 65535
min: 1
rule: MustRunAs
hostIPC: false
hostNetwork: false
hostPID: false
privileged: false
readOnlyRootFilesystem: true
requiredDropCapabilities:
- ALL
runAsUser:
ranges:
- max: 65535
min: 1
rule: MustRunAs
seLinux:
rule: RunAsAny
supplementalGroups:
ranges:
- max: 65535
min: 1
rule: MustRunAs
volumes:
- configMap
- secret
- emptyDir
---
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
labels:
app: metallb
name: speaker
namespace: metallb-system
spec:
allowPrivilegeEscalation: false
allowedCapabilities:
- NET_ADMIN
- NET_RAW
- SYS_ADMIN
allowedHostPaths: []
defaultAddCapabilities: []
defaultAllowPrivilegeEscalation: false
fsGroup:
rule: RunAsAny
hostIPC: false
hostNetwork: true
hostPID: false
hostPorts:
- max: {{ metallb_port }}
min: {{ metallb_port }}
privileged: true
readOnlyRootFilesystem: true
requiredDropCapabilities:
- ALL
runAsUser:
rule: RunAsAny
seLinux:
rule: RunAsAny
supplementalGroups:
rule: RunAsAny
volumes:
- configMap
- secret
- emptyDir
---
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
app: metallb
name: controller
namespace: metallb-system
---
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
app: metallb
name: speaker
namespace: metallb-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
app: metallb
name: metallb-system:controller
rules:
- apiGroups:
- ''
resources:
- services
verbs:
- get
- list
- watch
- update
- apiGroups:
- ''
resources:
- services/status
verbs:
- update
- apiGroups:
- ''
resources:
- events
verbs:
- create
- patch
- apiGroups:
- policy
resourceNames:
- controller
resources:
- podsecuritypolicies
verbs:
- use
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
app: metallb
name: metallb-system:speaker
rules:
- apiGroups:
- ''
resources:
- services
- endpoints
- nodes
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- events
verbs:
- create
- patch
- apiGroups:
- policy
resourceNames:
- speaker
resources:
- podsecuritypolicies
verbs:
- use
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
labels:
app: metallb
name: config-watcher
namespace: metallb-system
rules:
- apiGroups:
- ''
resources:
- configmaps
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
labels:
app: metallb
name: pod-lister
namespace: metallb-system
rules:
- apiGroups:
- ''
resources:
- pods
verbs:
- list
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
app: metallb
name: metallb-system:controller
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: metallb-system:controller
subjects:
- kind: ServiceAccount
name: controller
namespace: metallb-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
app: metallb
name: metallb-system:speaker
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: metallb-system:speaker
subjects:
- kind: ServiceAccount
name: speaker
namespace: metallb-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
app: metallb
name: config-watcher
namespace: metallb-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: config-watcher
subjects:
- kind: ServiceAccount
name: controller
- kind: ServiceAccount
name: speaker
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
app: metallb
name: pod-lister
namespace: metallb-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: pod-lister
subjects:
- kind: ServiceAccount
name: speaker
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
labels:
app: metallb
component: speaker
name: speaker
namespace: metallb-system
spec:
selector:
matchLabels:
app: metallb
component: speaker
template:
metadata:
annotations:
prometheus.io/port: '{{ metallb_port }}'
prometheus.io/scrape: 'true'
labels:
app: metallb
component: speaker
spec:
containers:
- args:
- --port={{ metallb_port }}
- --config=config
env:
- name: METALLB_NODE_NAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
- name: METALLB_HOST
valueFrom:
fieldRef:
fieldPath: status.hostIP
- name: METALLB_ML_BIND_ADDR
valueFrom:
fieldRef:
fieldPath: status.podIP
- name: METALLB_ML_LABELS
value: "app=metallb,component=speaker"
- name: METALLB_ML_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: METALLB_ML_SECRET_KEY
valueFrom:
secretKeyRef:
name: memberlist
key: secretkey
image: metallb/speaker:{{ metallb_version }}
imagePullPolicy: Always
name: speaker
ports:
- containerPort: {{ metallb_port }}
name: monitoring
resources:
limits:
cpu: {{ metallb_limits_cpu }}
memory: {{ metallb_limits_mem }}
securityContext:
allowPrivilegeEscalation: false
capabilities:
add:
- NET_ADMIN
- NET_RAW
- SYS_ADMIN
drop:
- ALL
readOnlyRootFilesystem: true
hostNetwork: true
nodeSelector:
beta.kubernetes.io/os: linux
serviceAccountName: speaker
terminationGracePeriodSeconds: 2
tolerations:
- effect: NoSchedule
key: node-role.kubernetes.io/master
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: metallb
component: controller
name: controller
namespace: metallb-system
spec:
revisionHistoryLimit: 3
selector:
matchLabels:
app: metallb
component: controller
template:
metadata:
annotations:
prometheus.io/port: '{{ metallb_port }}'
prometheus.io/scrape: 'true'
labels:
app: metallb
component: controller
spec:
containers:
- args:
- --port={{ metallb_port }}
- --config=config
image: metallb/controller:{{ metallb_version }}
imagePullPolicy: Always
name: controller
ports:
- containerPort: {{ metallb_port }}
name: monitoring
resources:
limits:
cpu: {{ metallb_limits_cpu }}
memory: {{ metallb_limits_mem }}
securityContext:
allowPrivilegeEscalation: false
capabilities:
drop:
- all
readOnlyRootFilesystem: true
nodeSelector:
beta.kubernetes.io/os: linux
securityContext:
runAsNonRoot: true
runAsUser: 65534
serviceAccountName: controller
terminationGracePeriodSeconds: 0

1
roles/kubespray-defaults/defaults/main.yaml
View file

@ -324,6 +324,7 @@ ingress_ambassador_enabled: false
ingress_alb_enabled: false
cert_manager_enabled: false
expand_persistent_volumes: false
metallb_enabled: false
## When OpenStack is used, Cinder version can be explicitly specified if autodetection fails (Fixed in 1.9: https://github.com/kubernetes/kubernetes/issues/50461)
# openstack_blockstorage_version: "v1/v2/auto (default)"