20220220作业
- kubernetes 网络策略：掌握ingress以及egress的使用
部署wenb服务
1.linux ns部署nginx和tomcat，并让nginx可以讲来自于/app的请求转发至当前namespace的tomcat pod。
2.python ns部署nginx和tomcat，并让nginx可以讲来自于/app的请求转发至当前namespace的tomcat pod。
case1: ingress-以pod为限制单位、只允同namespace含有特定标签的源pod访问目标pod的所有端口：
case1-ingress-podSelector.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: tomcat-access--networkpolicy
namespace: python
spec:
policyTypes:
- Ingress
podSelector:
matchLabels:
app: python-tomcat-app1-selector #对匹配到的目的Pod应用以下规则
ingress: #入栈规则，如果指定目标端口就是匹配全部端口和协议，协议TCP, UDP, or SCTP
- from:
- podSelector:
matchLabels:
app: python-nginx-selector #如果存在多个matchLabel条件，是or的关系，即要同时满足条件A、条件B、条件X
#project: "python"
case2: ingress-以pod加端口为限制单位、只允同namespace含有特定标签的源pod访问目标pod的指定端口：
case2-ingress-podSelector-ns-SinglePort.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: tomcat-access--networkpolicy
namespace: python
spec:
policyTypes:
- Ingress
podSelector:
matchLabels:
app: python-tomcat-app1-selector
ingress:
- from:
- podSelector:
matchLabels:
app: python-nginx-selector #指定访问源的匹配条件,如果存在多个matchLabel条件,是or的关系,即要同时满足条件A、条件B、条件X
#project: "python"
ports: #入栈规则，如果指定目标端口就是匹配全部端口和协议,协议TCP, UDP, or SCTP
- protocol: TCP
port: 8080 #允许通过TCP协议访问目标pod的8080端口,但是其它没有允许的端口将全部禁止访问
#port: 80
case3: ingress-允许同namespace的所有pod访问当前namespace的目标pod多个指定端口：
case3-ingress-podSelector-ns-MultiPort.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: tomcat-access--networkpolicy
namespace: python
spec:
policyTypes:
- Ingress
podSelector: #目标pod
matchLabels:
app: python-tomcat-app1-selector
ingress:
- from:
- podSelector: #匹配源pod,matchLabels: {}为不限制源pod即允许所有pod,写法等同于resources(不加就是不限制)
matchLabels: {}
ports: #入栈规则，如果指定目标端口就是匹配全部端口和协议，协议TCP, UDP, or SCTP
- protocol: TCP
port: 8080 #允许通过TCP协议访问目标pod的8080端口，但是其它没有允许的端口将全部禁止访问
#port: 80
- protocol: TCP
port: 3306
- protocol: TCP
port: 6379
case4: ingress-允许同namespace的所有pod访问当前namespace的目标pod所有端口：
case4-ingress-podSelector-ns.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: tomcat-access--networkpolicy
namespace: python
spec:
policyTypes:
- Ingress
podSelector: #目标pod
matchLabels: {} #匹配所有目标pod
ingress:
- from:
- podSelector: #匹配源pod,matchLabels: {}为不限制源pod即允许所有pod,写法等同于resources(不加就是不限制)
matchLabels: {}
#ports: #入栈规则，如果指定目标端口就是匹配全部端口和协议，协议TCP, UDP, or SCTP
#- protocol: TCP
# port: {} #允许通过TCP协议访问目标pod的8080端口，但是其它没有允许的端口将全部禁止访问
#port: 80
#- protocol: TCP
# port: 3306
#- protocol: TCP
# port: 6379
case5: ingress-ipBlock白名单：
case5-ingress-ipBlock.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: tomcat-access--networkpolicy
namespace: python
spec:
policyTypes:
- Ingress
podSelector: #目标pod
matchLabels:
app: python-tomcat-app1-selector
ingress:
- from:
# - podSelector: #匹配源pod,matchLabels: {}为不限制源pod即允许所有pod,写法等同于resources(不加就是不限制)
# matchLabels: {}
- ipBlock:
cidr: 10.200.0.0/16 #白名单，允许访问的地址范围，没有允许的将禁止访问目标pod
except:
- 10.200.218.0/24 #在以上范围内禁止访问的源IP地址
- 10.200.229.0/24 #在以上范围内禁止访问的源IP地址
- 10.200.230.239/32 #在以上范围内禁止访问的源IP地址
ports: #入栈规则，如果指定目标端口就是匹配全部端口和协议，协议TCP, UDP, or SCTP
- protocol: TCP
port: 8080 #允许通过TCP协议访问目标pod的8080端口，但是其它没有允许的端口将全部禁止访问
#port: 80
- protocol: TCP
port: 3306
- protocol: TCP
port: 6379
case6: ingress-namespace Selector-ns选择器：
case6-ingress-namespaceSelector.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: tomcat-access--networkpolicy
namespace: python
spec:
policyTypes:
- Ingress
podSelector: #目标pod
matchLabels: {} #允许访问python namespace 中的所有pod
ingress:
- from:
- namespaceSelector:
matchLabels:
nsname: linux #只允许指定的namespace访问
- namespaceSelector:
matchLabels:
nsname: python #只允许指定的namespace访问
ports: #入栈规则，如果指定目标端口就是匹配全部端口和协议，协议TCP, UDP, or SCTP
- protocol: TCP
port: 8080 #允许通过TCP协议访问目标pod的8080端口，但是其它没有允许的端口将全部禁止访问
#port: 80
- protocol: TCP
port: 3306
- protocol: TCP
port: 6379
case7: Egress-podSelector-Pod出口方向目的IP及目的端口限制-只允许访问指定的目的地址范围及端口：
case7-Egress-ipBlock.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: egress-access-networkpolicy
namespace: python
spec:
policyTypes:
- Egress
podSelector: #目标pod选择器
matchLabels: #基于label匹配目标pod
app: python-tomcat-app1-selector #匹配python namespace中app的值为python-tomcat-app1-selector的pod,然后基于egress中的指定网络策略进行出口方向的网络限制
egress:
- to:
- ipBlock:
cidr: 10.200.0.0/16 #允许匹配到的pod出口访问的目的CIDR地址范围
- ipBlock:
cidr: 192.168.1.0/24 #允许匹配到的pod出口访问的目的主机
ports:
- protocol: TCP
port: 80 #允许匹配到的pod访问目的端口为80的访问
- protocol: TCP
port: 53 #允许匹配到的pod访问目的端口为53 即DNS的解析
- protocol: UDP
port: 53 #允许匹配到的pod访问目的端口为53 即DNS的解析
case8: Egress-podSelector-Pod出口方向目的Pod限制-只允许访问指定的pod及端口：
case8-Egress-PodSelector.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: egress-access-networkpolicy
namespace: python
spec:
policyTypes:
- Egress
podSelector: #目标pod选择器
matchLabels: #基于label匹配目标pod
app: python-nginx-selector #匹配python namespace中app的值为python-tomcat-app1-selector的pod,然后基于egress中的指定网络策略进行出口方向的网络限制
egress:
- to:
- podSelector: #匹配pod,matchLabels: {}为不限制源pod即允许所有pod,写法等同于resources(不加就是不限制)
matchLabels:
app: python-tomcat-app1-selector
ports:
- protocol: TCP
port: 8080 #允许80端口的访问
- protocol: TCP
port: 53 #允许DNS的解析
- protocol: UDP
port: 53
case9: Egress-namespaceSelector：
case9-Egress-namespaceSelector.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: egress-access-networkpolicy
namespace: python
spec:
policyTypes:
- Egress
podSelector: #目标pod选择器
matchLabels: #基于label匹配目标pod
app: python-nginx-selector #匹配python namespace中app的值为python-tomcat-app1-selector的pod,然后基于egress中的指定网络策略进行出口方向的网络限制
egress:
- to:
- namespaceSelector:
matchLabels:
nsname: python #指定允许访问的目的namespace
- namespaceSelector:
matchLabels:
nsname: linux #指定允许访问的目的namespace
ports:
- protocol: TCP
port: 8080 #允许80端口的访问
- protocol: TCP
port: 53 #允许DNS的解析
- protocol: UDP
port: 53
-
kubernetes Ingress-NGINX
先安装ingress-control
1.0.ingress-control-k8s-v1.22.yaml
apiVersion: v1
kind: Namespace
metadata:
name: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
---
# Source: ingress-nginx/templates/controller-serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx
namespace: ingress-nginx
automountServiceAccountToken: true
---
# Source: ingress-nginx/templates/controller-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller
namespace: ingress-nginx
data:
---
# Source: ingress-nginx/templates/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
name: ingress-nginx
rules:
- apiGroups:
- ''
resources:
- configmaps
- endpoints
- nodes
- pods
- secrets
verbs:
- list
- watch
- apiGroups:
- ''
resources:
- nodes
verbs:
- get
- apiGroups:
- ''
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- networking.k8s.io
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- events
verbs:
- create
- patch
- apiGroups:
- networking.k8s.io
resources:
- ingresses/status
verbs:
- update
- apiGroups:
- networking.k8s.io
resources:
- ingressclasses
verbs:
- get
- list
- watch
---
# Source: ingress-nginx/templates/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
name: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: ingress-nginx
subjects:
- kind: ServiceAccount
name: ingress-nginx
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/controller-role.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx
namespace: ingress-nginx
rules:
- apiGroups:
- ''
resources:
- namespaces
verbs:
- get
- apiGroups:
- ''
resources:
- configmaps
- pods
- secrets
- endpoints
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- networking.k8s.io
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- networking.k8s.io
resources:
- ingresses/status
verbs:
- update
- apiGroups:
- networking.k8s.io
resources:
- ingressclasses
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- configmaps
resourceNames:
- ingress-controller-leader
verbs:
- get
- update
- apiGroups:
- ''
resources:
- configmaps
verbs:
- create
- apiGroups:
- ''
resources:
- events
verbs:
- create
- patch
---
# Source: ingress-nginx/templates/controller-rolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx
namespace: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: ingress-nginx
subjects:
- kind: ServiceAccount
name: ingress-nginx
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/controller-service-webhook.yaml
apiVersion: v1
kind: Service
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller-admission
namespace: ingress-nginx
spec:
type: ClusterIP
ports:
- name: https-webhook
port: 443
targetPort: webhook
appProtocol: https
selector:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
---
# Source: ingress-nginx/templates/controller-deployment.yaml
apiVersion: apps/v1
kind: DaemonSet
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller
namespace: ingress-nginx
spec:
selector:
matchLabels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
revisionHistoryLimit: 10
minReadySeconds: 0
template:
metadata:
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
spec:
hostNetwork: true
dnsPolicy: ClusterFirst
containers:
- name: controller
image: registry.cn-beijing.aliyuncs.com/kole_chang/controller:v1.0.0
imagePullPolicy: IfNotPresent
lifecycle:
preStop:
exec:
command:
- /wait-shutdown
args:
- /nginx-ingress-controller
- --election-id=ingress-controller-leader
- --controller-class=k8s.io/ingress-nginx
- --configmap=$(POD_NAMESPACE)/ingress-nginx-controller
- --validating-webhook=:8443
- --validating-webhook-certificate=/usr/local/certificates/cert
- --validating-webhook-key=/usr/local/certificates/key
- --watch-ingress-without-class=true
securityContext:
capabilities:
drop:
- ALL
add:
- NET_BIND_SERVICE
runAsUser: 101
allowPrivilegeEscalation: true
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: LD_PRELOAD
value: /usr/local/lib/libmimalloc.so
livenessProbe:
failureThreshold: 5
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
readinessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
ports:
- name: http
containerPort: 80
protocol: TCP
- name: https
containerPort: 443
protocol: TCP
- name: webhook
containerPort: 8443
protocol: TCP
volumeMounts:
- name: webhook-cert
mountPath: /usr/local/certificates/
readOnly: true
resources:
requests:
cpu: 100m
memory: 90Mi
nodeSelector:
kubernetes.io/os: linux
serviceAccountName: ingress-nginx
terminationGracePeriodSeconds: 300
volumes:
- name: webhook-cert
secret:
secretName: ingress-nginx-admission
---
# Source: ingress-nginx/templates/controller-ingressclass.yaml
# We don't support namespaced ingressClass yet
# So a ClusterRole and a ClusterRoleBinding is required
apiVersion: networking.k8s.io/v1
kind: IngressClass
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: nginx
namespace: ingress-nginx
spec:
controller: k8s.io/ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/validating-webhook.yaml
# before changing this value, check the required kubernetes version
# https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/#prerequisites
apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingWebhookConfiguration
metadata:
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
name: ingress-nginx-admission
webhooks:
- name: validate.nginx.ingress.kubernetes.io
matchPolicy: Equivalent
rules:
- apiGroups:
- networking.k8s.io
apiVersions:
- v1
operations:
- CREATE
- UPDATE
resources:
- ingresses
failurePolicy: Fail
sideEffects: None
admissionReviewVersions:
- v1
clientConfig:
service:
namespace: ingress-nginx
name: ingress-nginx-controller-admission
path: /networking/v1/ingresses
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: ingress-nginx-admission
namespace: ingress-nginx
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: ingress-nginx-admission
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
rules:
- apiGroups:
- admissionregistration.k8s.io
resources:
- validatingwebhookconfigurations
verbs:
- get
- update
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: ingress-nginx-admission
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: ingress-nginx-admission
subjects:
- kind: ServiceAccount
name: ingress-nginx-admission
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/role.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: ingress-nginx-admission
namespace: ingress-nginx
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
rules:
- apiGroups:
- ''
resources:
- secrets
verbs:
- get
- create
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/rolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: ingress-nginx-admission
namespace: ingress-nginx
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: ingress-nginx-admission
subjects:
- kind: ServiceAccount
name: ingress-nginx-admission
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/job-createSecret.yaml
apiVersion: batch/v1
kind: Job
metadata:
name: ingress-nginx-admission-create
namespace: ingress-nginx
annotations:
helm.sh/hook: pre-install,pre-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
template:
metadata:
name: ingress-nginx-admission-create
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
containers:
- name: create
image: registry.cn-beijing.aliyuncs.com/kole_chang/kube-webhook-certgen:v1.0
imagePullPolicy: IfNotPresent
args:
- create
- --host=ingress-nginx-controller-admission,ingress-nginx-controller-admission.$(POD_NAMESPACE).svc
- --namespace=$(POD_NAMESPACE)
- --secret-name=ingress-nginx-admission
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
restartPolicy: OnFailure
serviceAccountName: ingress-nginx-admission
nodeSelector:
kubernetes.io/os: linux
securityContext:
runAsNonRoot: true
runAsUser: 2000
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/job-patchWebhook.yaml
apiVersion: batch/v1
kind: Job
metadata:
name: ingress-nginx-admission-patch
namespace: ingress-nginx
annotations:
helm.sh/hook: post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
template:
metadata:
name: ingress-nginx-admission-patch
labels:
helm.sh/chart: ingress-nginx-4.0.1
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
containers:
- name: patch
image: registry.cn-beijing.aliyuncs.com/kole_chang/kube-webhook-certgen:v1.0
imagePullPolicy: IfNotPresent
args:
- patch
- --webhook-name=ingress-nginx-admission
- --namespace=$(POD_NAMESPACE)
- --patch-mutating=false
- --secret-name=ingress-nginx-admission
- --patch-failure-policy=Fail
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
restartPolicy: OnFailure
serviceAccountName: ingress-nginx-admission
nodeSelector:
kubernetes.io/os: linux
securityContext:
runAsNonRoot: true
runAsUser: 2000
2.1 通过ingress-nginx实现多域名匹配
ingress_multi-host.yaml
#apiVersion: networking.k8s.io/v1beta1
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: nginx-web
namespace: magedu
annotations:
kubernetes.io/ingress.class: "nginx" ##指定Ingress Controller的类型
nginx.ingress.kubernetes.io/use-regex: "true" ##指定后面rules定义的path可以使用正则表达式
nginx.ingress.kubernetes.io/proxy-connect-timeout: "600" ##连接超时时间,默认为5s
nginx.ingress.kubernetes.io/proxy-send-timeout: "600" ##后端服务器回转数据超时时间,默认为60s
nginx.ingress.kubernetes.io/proxy-read-timeout: "600" ##后端服务器响应超时时间,默认为60s
nginx.ingress.kubernetes.io/proxy-body-size: "10m" ##客户端上传文件，最大大小，默认为20m
#nginx.ingress.kubernetes.io/rewrite-target: / ##URL重写
nginx.ingress.kubernetes.io/app-root: /index.html
spec:
rules:
# - host: www.jiege.com
# http:
# paths:
# - path: /magedu
# backend:
# serviceName: magedu-tomcat-app1-service
# servicePort: 80
# - path: /magedu2
# backend:
# serviceName: magedu-tomcat-app2-service
# servicePort: 80
- host: www.jiege.com
http:
paths:
- pathType: Prefix
path: "/app1"
backend:
service:
name: magedu-tomcat-app1-service
port:
number: 80
- pathType: Prefix
path: "/app2"
backend:
service:
name: magedu-tomcat-app2-service
port:
number: 80
2.2 通过ingress-nginx实现多URL匹配
生成证书
1.6：OpenSSL：
certs# openssl req -x509 -sha256 -newkey rsa:4096 -keyout ca.key -out ca.crt -days 3560 -nodes -subj '/CN=www.jiege.com'
certs# openssl req -new -newkey rsa:4096 -keyout server.key -out server.csr -nodes -subj '/CN=www.jiege.com'
certs# openssl x509 -req -sha256 -days 3650 -in server.csr -CA ca.crt -CAkey ca.key -set_serial 01 -out server.crt
证书上传至k8s：
certs# kubectl create secret generic tls-secret --from-file=tls.crt=server.crt --from-file=tls.key=server.key -n magedu
secret/tls-secret created
多域名：
# openssl req -new -newkey rsa:4096 -keyout mobile.key -out mobile.csr -nodes -subj '/CN=mobile.magedu.net'
# openssl x509 -req -sha256 -days 3650 -in mobile.csr -CA ca.crt -CAkey ca.key -set_serial 01 -out mobile.crt
# certs# kubectl create secret generic mobile-tls-secret --from-file=tls.crt=mobile.crt --from-file=tls.key=mobile.key -n magedu
ingress-https-magedu_multi-host.yaml
#apiVersion: networking.k8s.io/v1beta1
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: nginx-web
namespace: magedu
annotations:
kubernetes.io/ingress.class: "nginx" ##指定Ingress Controller的类型
nginx.ingress.kubernetes.io/ssl-redirect: 'true'
spec:
tls:
- hosts:
- www.jiege.com
secretName: tls-secret
- hosts:
- mobile.jiege.com
secretName: mobile-tls-secret
rules:
- host: www.jiege.com
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: magedu-tomcat-app1-service
port:
number: 80
- host: mobile.jiege.com
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: magedu-tomcat-app2-service
port:
number: 80
- kubernetes 的资源限制
resources
resources:
limits:
cpu: "1.2"
memory: "512Mi"
requests:
memory: "100Mi"
cpu: "500m"
- RBAC
magedu-role.yaml
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
namespace: magedu
name: magedu-role
rules:
- apiGroups: ["*"]
resources: ["pods","pods/exec"]
verbs: ["*"]
##RO-Role
#verbs: ["get", "watch", "list"]
- apiGroups: ["extensions", "apps/v1"]
resources: ["deployments"]
verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
##RO-Role
#verbs: ["get", "watch", "list"]
4.1：在指定namespace创建账户：
kubectl create serviceaccount magedu -n magedu
4.2：创建role规则：
kubectl apply -f magedu-role.yaml
4.3 将规则与账户进行绑定：
kubectl apply -f magedu-role-bind.yaml
magedu-role-bind.yaml
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: role-bind-magedu
namespace: magedu
subjects:
- kind: ServiceAccount
name: magedu
namespace: magedu
roleRef:
kind: Role
name: magedu-role
apiGroup: rbac.authorization.k8s.io
4.4 获取token名称：
kubectl get secret -n magedu | grep magedu
magedu-token-jf2q9 kubernetes.io/service-account-token 3 111m
4.5 创建csr文件：
magedu-csr.json
{
"CN": "China",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}
4.6 签发证书：
# ln -sv /etc/kubeasz/bin/cfssl* /usr/bin/
cfssl gencert -ca=/etc/kubernetes/ssl/ca.pem -ca-key=/etc/kubernetes/ssl/ca-key.pem -config= /etc/kubeasz/clusters/k8s-01/ssl/ca-config.json -profile=kubernetes magedu-csr.json | cfssljson -bare magedu
4.7 生成普通用户kubeconfig文件：
kubectl config set-cluster cluster1 --certificate-authority=/etc/kubernetes/ssl/ca.pem --embed-certs=true --server=https://192.168.1.198:6443 --kubeconfig=magedu.kubeconfig #--embed-certs=true为嵌入证书信息
4.8 设置客户端认证参数:
cp *.pem /etc/kubernetes/ssl/
kubectl config set-credentials magedu \
--client-certificate=/etc/kubernetes/ssl/magedu.pem \
--client-key=/etc/kubernetes/ssl/magedu-key.pem \
--embed-certs=true \
--kubeconfig=magedu.kubeconfig
4.9 设置上下文参数(多集群使用上下文区分)
kubectl config set-context cluster1 \
--cluster=cluster1 \
--user=magedu \
--namespace=magedu \
--kubeconfig=magedu.kubeconfig
4.10 设置默认上下文
kubectl config use-context cluster1 --kubeconfig=magedu.kubeconfig
4.11 获取token：
将token写入magedu.kubeconfig
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