Add kube dashboard, enabled by default (#1643)

* Add kube dashboard, enabled by default

Also add rbac role for kube user

* Update main.yml
This commit is contained in:
Matthew Mosesohn 2017-09-09 23:38:03 +03:00 committed by GitHub
parent f2057dd43d
commit 9fa1873a65
6 changed files with 163 additions and 0 deletions

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@ -89,3 +89,15 @@ file yourself.
For more information on kubeconfig and accessing a Kubernetes cluster, refer to
the Kubernetes [documentation](https://kubernetes.io/docs/tasks/access-application-cluster/configure-access-multiple-clusters/).
Accessing Kubernetes Dashboard
------------------------------
If the variable `dashboard_enabled` is set (default is true), then you can
access the Kubernetes Dashboard at the following URL:
https://kube:_kube-password_@_host_:6443/ui/
To see the password, refer to the section above, titled *Connecting to
Kubernetes*. The host can be any kube-master or kube-node or loadbalancer
(when enabled).

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@ -45,6 +45,8 @@ kube_users:
kube:
pass: "{{kube_api_pwd}}"
role: admin
groups:
- system:masters
## It is possible to activate / deactivate selected authentication methods (basic auth, static token auth)
#kube_oidc_auth: false
@ -141,6 +143,9 @@ vault_deployment_type: docker
# K8s image pull policy (imagePullPolicy)
k8s_image_pull_policy: IfNotPresent
# Kubernetes dashboard (available at http://first_master:6443/ui by default)
dashboard_enabled: true
# Monitoring apps for k8s
efk_enabled: false

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@ -38,6 +38,17 @@ netchecker_server_memory_limit: 256M
netchecker_server_cpu_requests: 50m
netchecker_server_memory_requests: 64M
# Dashboard
dashboard_enabled: false
dashboard_image_repo: kubernetesdashboarddev/kubernetes-dashboard-amd64
dashboard_image_tag: head
# Limits for dashboard
dashboard_cpu_limit: 100m
dashboard_memory_limit: 256M
dashboard_cpu_requests: 50m
dashboard_memory_requests: 64M
# SSL
etcd_cert_dir: "/etc/ssl/etcd/ssl"
canal_cert_dir: "/etc/canal/certs"

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@ -0,0 +1,20 @@
---
- name: Kubernetes Apps | Lay down dashboard template
template:
src: "{{item.file}}"
dest: "{{kube_config_dir}}/{{item.file}}"
with_items:
- {file: dashboard.yml.j2, type: deploy, name: netchecker-agent}
register: manifests
when: inventory_hostname == groups['kube-master'][0]
- name: Kubernetes Apps | Start dashboard
kube:
name: "{{item.item.name}}"
namespace: "{{system_namespace}}"
kubectl: "{{bin_dir}}/kubectl"
resource: "{{item.item.type}}"
filename: "{{kube_config_dir}}/{{item.item.file}}"
state: "latest"
with_items: "{{ manifests.results }}"
when: inventory_hostname == groups['kube-master'][0]

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@ -63,3 +63,8 @@
include: tasks/netchecker.yml
when: deploy_netchecker
tags: netchecker
- name: Kubernetes Apps | Dashboard
include: tasks/dashboard.yml
when: dashboard_enabled
tags: dashboard

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@ -0,0 +1,110 @@
# Copyright 2015 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Configuration to deploy head version of the Dashboard UI compatible with
# Kubernetes 1.6 (RBAC enabled).
#
# Example usage: kubectl create -f <this_file>
{% if rbac_enabled %}
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: {{ system_namespace }}
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: kubernetes-dashboard
labels:
k8s-app: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: {{ system_namespace }}
{% endif %}
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: {{ system_namespace }}
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
spec:
containers:
- name: kubernetes-dashboard
image: {{ dashboard_image_repo }}:{{ dashboard_image_tag }}
# Image is tagged and updated with :head, so always pull it.
imagePullPolicy: Always
resources:
limits:
cpu: {{ dashboard_cpu_limit }}
memory: {{ dashboard_memory_limit }}
requests:
cpu: {{ dashboard_cpu_requests }}
memory: {{ dashboard_memory_requests }}
ports:
- containerPort: 9090
protocol: TCP
args:
# Uncomment the following line to manually specify Kubernetes API server Host
# If not specified, Dashboard will attempt to auto discover the API server and connect
# to it. Uncomment only if the default does not work.
# - --apiserver-host=http://my-address:port
livenessProbe:
httpGet:
path: /
port: 9090
initialDelaySeconds: 30
timeoutSeconds: 30
{% if rbac_enabled %}
serviceAccountName: kubernetes-dashboard
{% endif %}
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: {{ system_namespace }}
spec:
ports:
- port: 80
targetPort: 9090
selector:
k8s-app: kubernetes-dashboard