kubernetes1.28.0配合apisix-ingress安裝過程【1】

hukey發表於2024-04-25

環境介紹

主機資訊

注意：由於資源有限，透過三臺vmware 虛擬機器進行安裝。

主機名	IP	作業系統	配置
k8s-master	192.168.199.101	Centos7.9	2CPU、4G記憶體、100G磁碟
k8s-node01	192.168.199.102	Centos7.9	2CPU、4G記憶體、100G磁碟
k8s-node02	192.168.199.103	Centos7.9	2CPU、4G記憶體、100G磁碟

軟體版本資訊

軟體名	版本號
containerd	v1.7.14
k8s	v1.28.0
flannel	v0.25.1
traefik	v2.11

環境初始化

注意：所有主機執行初始化操作。

配置yum倉庫

cd /etc/yum.repos.d/
mkdir bak ; mv *.repo bak/

curl https://mirrors.aliyun.com/repo/Centos-7.repo -o Centos-7.repo
curl https://mirrors.aliyun.com/repo/epel-7.repo -o epel-7.repo
sed -i '/aliyuncs/d' Centos-7.repo

#新增 kubernetes 倉庫
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
        http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

修改主機名

hostnamectl set-hostname k8s-master

cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.199.101 k8s-master
192.168.199.102 k8s-node01
192.168.199.103 k8s-node02

#複製到兩臺node主機
root@k8s-master(192.168.199.101)~>for i in 1 2; do scp /etc/hosts 192.168.199.4$i:/etc/ ; done

配置ntp服務

yum install chrony ntpdate -y
sed "s/^server/#server/g" /etc/chrony.conf
echo 'server tiger.sina.com.cn iburst' >> /etc/chrony.conf
echo 'server ntp1.aliyun.com iburst' >> /etc/chrony.conf
systemctl enable chronyd ; systemctl start chronyd
ntpdate tiger.sina.com.cn

關閉selinux和firewalld

sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
systemctl disable firewalld; systemctl stop firewalld

這裡修改完成後，建議重啟主機。

reboot

關閉swap

swapoff -a
sed -i  '/swap/s/^/#/' /etc/fstab

匯入模組

cat << EOF > /etc/modules-load.d/containerd.conf
overlay
br_netfilter
EOF

modprobe overlay
modprobe br_netfilter

配置核心引數

cat << EOF > /etc/sysctl.d/99-kubernetes-cri.conf
vm.swappiness = 0
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
user.max_user_namespaces=28633
EOF

sysctl --system

配置支援ipvs

cat > /etc/sysconfig/modules/ipvs.modules <<EOF
#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
EOF

chmod 755 /etc/sysconfig/modules/ipvs.modules && bash /etc/sysconfig/modules/ipvs.modules && lsmod | grep -e ip_vs -e nf_conntrack_ipv4

yum install -y ipset ipvsadm

部署Containerd

注意：所有主機安裝containerd

nerdctl 下載地址：https://github.com/containerd/nerdctl/releases/download/v1.7.5/nerdctl-full-1.7.5-linux-amd64.tar.gz

tar xf nerdctl-full-1.7.5-linux-amd64.tar.gz  -C /usr/local/

生成containerd配置檔案

mk /etc/containerd/
cd /etc/containerd/
containerd config default > config.toml

vim config.toml
...
SystemdCgroup = false #修改為true
...


再修改/etc/containerd/config.toml中的
[plugins."io.containerd.grpc.v1.cri"]
  ...
  # sandbox_image = "k8s.gcr.io/pause:3.6"
  sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.9"	#這裡一定要注意，要根據下載到本地 pause映象的版本來進行修改，否則初始化會過不去。

啟動服務

systemctl enable --now containerd buildkit

檢視版本

ctr version
Client:
  Version:  v1.7.14
  Revision: dcf2847247e18caba8dce86522029642f60fe96b
  Go version: go1.21.8

Server:
  Version:  v1.7.14
  Revision: dcf2847247e18caba8dce86522029642f60fe96b
  UUID: 426750f8-14ca-4490-8cca-3ded2cc2a21c

k8s-master安裝操作

使用kubeadm部署k8s

注意：僅 k8s-master 節點執行此章節

安裝程式包

yum install -y kubeadm-1.28.0 kubelet-1.28.0 kubectl-1.28.0

生成預設配置檔案

kubeadm completion bash > /etc/bash_completion.d/kubeadm
kubectl completion bash > /etc/bash_completion.d/kubectl
source /etc/bash_completion.d/kubectl /etc/bash_completion.d/kubeadm

kubeadm config print init-defaults > kubeadm-init.yml

修改配置檔案

vim kubeadm-init.yml

apiVersion: kubeadm.k8s.io/v1beta3
bootstrapTokens:
- groups:
  - system:bootstrappers:kubeadm:default-node-token
  token: abcdef.0123456789abcdef
  ttl: 24h0m0s
  usages:
  - signing
  - authentication
kind: InitConfiguration
localAPIEndpoint:
  advertiseAddress: 1.2.3.4
  bindPort: 6443
nodeRegistration:
  criSocket: unix:///var/run/containerd/containerd.sock
  imagePullPolicy: IfNotPresent
  name: node
  taints: null
---
apiServer:
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta3
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns: {}
etcd:
  local:
    dataDir: /var/lib/etcd
imageRepository: registry.k8s.io
kind: ClusterConfiguration
kubernetesVersion: 1.28.0
networking:
  dnsDomain: cluster.local
  serviceSubnet: 10.96.0.0/12
scheduler: {}


--------------------修改如下--------------------
apiVersion: kubeadm.k8s.io/v1beta3
bootstrapTokens:
- groups:
  - system:bootstrappers:kubeadm:default-node-token
  token: abcdef.0123456789abcdef
  ttl: 0s #修改token過期時間為無限制
  usages:
  - signing
  - authentication
kind: InitConfiguration
localAPIEndpoint:
  advertiseAddress: 192.168.199.41 #修改為k8s-master節點IP
  bindPort: 6443
nodeRegistration:
  criSocket: unix:///var/run/containerd/containerd.sock
  imagePullPolicy: IfNotPresent
  name: k8s-master	#修改為主機名
  taints: null
---
apiServer:
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta3
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns: {}
etcd:
  local:
    dataDir: /var/lib/etcd
imageRepository: registry.aliyuncs.com/google_containers #替換為國內的映象倉庫
kind: ClusterConfiguration
kubernetesVersion: 1.28.0
networking:
  dnsDomain: cluster.local
  serviceSubnet: 10.96.0.0/12
  podSubnet: 10.244.0.0/16 #為pod網路指定網路段
---
#申明cgroup用 systemd
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
cgroupDriver: systemd
failSwapOn: false
---
#啟用ipvs
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
mode: ipvs

檢視及下載映象檔案

#檢視映象
kubeadm config images list --config=kubeadm-init.yml
registry.aliyuncs.com/google_containers/kube-apiserver:v1.28.0
registry.aliyuncs.com/google_containers/kube-controller-manager:v1.28.0
registry.aliyuncs.com/google_containers/kube-scheduler:v1.28.0
registry.aliyuncs.com/google_containers/kube-proxy:v1.28.0
registry.aliyuncs.com/google_containers/pause:3.9
registry.aliyuncs.com/google_containers/etcd:3.5.9-0
registry.aliyuncs.com/google_containers/coredns:v1.10.1

#下載映象
kubeadm config images pull --config=kubeadm-init.yml

設定kubelet開機啟動

#不設定在初始化叢集會有告警資訊
systemctl enable kubelet.service

初始化k8s叢集

kubeadm init --config=kubeadm-init.yml | tee kubeadm-init.log
...

Your Kubernetes control-plane has initialized successfully!

To start using your cluster, you need to run the following as a regular user:

  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

Alternatively, if you are the root user, you can run:

  export KUBECONFIG=/etc/kubernetes/admin.conf

You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
  https://kubernetes.io/docs/concepts/cluster-administration/addons/

Then you can join any number of worker nodes by running the following on each as root:

kubeadm join 192.168.199.41:6443 --token abcdef.0123456789abcdef \
        --discovery-token-ca-cert-hash sha256:94805e71436365f20bca9e1e4a63509578bdc39c2428302c915b0c01fc111430

設定使用叢集許可權

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

檢視node節點

kubectl get nodes
NAME         STATUS     ROLES           AGE    VERSION
k8s-master   NotReady   control-plane   105s   v1.28.0

安裝網路外掛flannet

注意：僅 k8s-master 節點執行此章節

下載配置檔案

wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

安裝執行

kubectl apply -f kube-flannel.yml

檢視k8s名稱空間

kubectl get ns
NAME              STATUS   AGE
default           Active   3m44s
kube-flannel      Active   23s
kube-node-lease   Active   3m44s
kube-public       Active   3m44s
kube-system       Active   3m44s

kubectl get po -n kube-flannel
NAME                    READY   STATUS    RESTARTS   AGE
kube-flannel-ds-465rx   1/1     Running   0          29s

kubectl get nodes
NAME         STATUS   ROLES           AGE     VERSION
k8s-master   Ready    control-plane   3m57s   v1.28.0

k8s-node節點操作

安裝程式包

yum install -y kubeadm-1.28.0 kubelet-1.28.0 kubectl-1.28.0

設定kubelet開機啟動

#不設定在初始化叢集會有告警資訊
systemctl enable kubelet.service

加入叢集

kubeadm join 192.168.199.41:6443 --token abcdef.0123456789abcdef \
        --discovery-token-ca-cert-hash sha256:94805e71436365f20bca9e1e4a63509578bdc39c2428302c915b0c01fc111430

使用叢集

檢視叢集節點

kubectl get nodes
NAME         STATUS   ROLES           AGE   VERSION
k8s-master   Ready    control-plane   23m   v1.28.0
k8s-node01   Ready    <none>          62s   v1.28.0

建立pod

kubectl run ngx --image=nginx:alpine --port=80 --restart=Always

檢視pod

kubectl get po -o wide
NAME   READY   STATUS    RESTARTS   AGE   IP           NODE         NOMINATED NODE   READINESS GATES
ngx    1/1     Running   0          16s   10.244.1.2   k8s-node01   <none>           <none>

建立service

kubectl expose pod ngx --port=80 --target-port=80 --name=ngx

檢視service

kubectl get svc
NAME         TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.96.0.1        <none>        443/TCP   32m
ngx          ClusterIP   10.110.223.232   <none>        80/TCP    22s

叢集內，透過 cluster-ip 即可訪問到 pod服務

curl -I  10.110.223.232
HTTP/1.1 200 OK
Server: nginx/1.25.4
Date: Tue, 16 Apr 2024 03:51:18 GMT
Content-Type: text/html
Content-Length: 615
Last-Modified: Wed, 14 Feb 2024 16:20:36 GMT
Connection: keep-alive
ETag: "65cce854-267"
Accept-Ranges: bytes

ingress-controller

注意：k8s-mater 執行操作。

一直使用的 traefik 作為 ingress-controller ，此次專案更改為 APISIX 作為 ingress-controller 。

APISIX 官方文件：https://apisix.apache.org/docs/ingress-controller/getting-started/

Traefik VS apisix - https://apisix.incubator.apache.org/zh/blog/2022/12/19/apisix-ingress-better-than-traefik/

查閱了很久官方文件和網路上的資料，也沒能實現想要的功能，因此詳細記錄本次安裝除錯過程，官方推薦使用 helm 安裝。

安裝helm

wget https://get.helm.sh/helm-v3.14.4-linux-amd64.tar.gz
tar xf helm-v3.14.4-linux-amd64.tar.gz
cp -a linux-amd64/helm  /usr/local/bin/
helm version
version.BuildInfo{Version:"v3.14.4", GitCommit:"81c902a123462fd4052bc5e9aa9c513c4c8fc142", GitTreeState:"clean", GoVersion:"go1.21.9"}

下載apisix

helm repo add apisix https://charts.apiseven.com
helm repo update
helm pull apisix/apisix
tar xf apisix-2.6.0.tgz
cd apisix

apisix常用配置

使用過 helm 的同學都知道，helm 需要根據自己的需要進行定製化。因此，該步驟就尤為重要。

官方文件 helm 安裝 apisix ：https://apisix.apache.org/docs/helm-chart/apisix/ 只是給了一個通用的例子，我們這裡需要更具自己的環境進行自定義。

etcd叢集

首先，apisix 會建立一個 etcd 叢集（三個節點）為了可用性需要注意以下幾點：

必須三個 etcd 落在三個不同的物理節點上
etcd 資料持久化問題，這裡就需要用到 storageclass

這裡就需要配置 storageclass ，根據我這裡的環境，1臺master、2臺node，沒有額外的儲存環境，因此退而求其次。採用如下方案：

每臺節點建立一個固定的目錄，然後讓 pv指向該目錄，透過 storagecalss 來實現 pv 和 pvc 的繫結。

在每臺主機上建立目錄：

#該目錄作為etcd資料持久化目錄
mkdir -p /data/k8s/etcd-data

建立pv

vim pv-local.yaml
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv-local-1	#注意名字
spec:
  capacity:
    storage: 20Gi	#容量大小
  volumeMode: Filesystem
  accessModes:
  - ReadWriteOnce
  persistentVolumeReclaimPolicy: Delete
  storageClassName: local-storage	# 建立storageClass時要用到
  local:
    path: /data/k8s/etcd-data	#本地持久化目錄
  nodeAffinity:
    required:
      nodeSelectorTerms:
      - matchExpressions:
        - key: kubernetes.io/hostname
          operator: In
          values:
          - k8s-master	#繫結到那個節點
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv-local-2	#注意名字
spec:
  capacity:
    storage: 20Gi	#容量大小
  volumeMode: Filesystem
  accessModes:
  - ReadWriteOnce
  persistentVolumeReclaimPolicy: Delete
  storageClassName: local-storage	# 建立storageClass時要用到
  local:
    path: /data/k8s/etcd-data	#本地持久化目錄
  nodeAffinity:
    required:
      nodeSelectorTerms:
      - matchExpressions:
        - key: kubernetes.io/hostname
          operator: In
          values:
          - k8s-node01	#繫結到那個節點
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv-local-3	#注意名字
spec:
  capacity:
    storage: 20Gi	#容量大小
  volumeMode: Filesystem
  accessModes:
  - ReadWriteOnce
  persistentVolumeReclaimPolicy: Delete
  storageClassName: local-storage	# 建立storageClass時要用到
  local:
    path: /data/k8s/etcd-data	#本地持久化目錄
  nodeAffinity:
    required:
      nodeSelectorTerms:
      - matchExpressions:
        - key: kubernetes.io/hostname
          operator: In
          values:
          - k8s-node02	#繫結到那個節點

執行清單檔案：

kubectl apply -f pv-local.yaml

建立storageclass

vim storageclass.yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: local-storage
provisioner: kubernetes.io/no-provisioner
volumeBindingMode: WaitForFirstConsumer

執行清單檔案：

kubectl apply -f storageclass.yaml

檢視

kubectl get pv,sc
NAME                          CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS      CLAIM   STORAGECLASS    REASON   AGE
persistentvolume/pv-local-1   20Gi       RWO            Delete           Available           local-storage            3m9s
persistentvolume/pv-local-2   20Gi       RWO            Delete           Available           local-storage            3m8s
persistentvolume/pv-local-3   20Gi       RWO            Delete           Available           local-storage            3m8s

NAME                                        PROVISIONER                    RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
storageclass.storage.k8s.io/local-storage   kubernetes.io/no-provisioner   Delete          WaitForFirstConsumer   false                  21s

接下來，就需要配置 etcd helm chart

cd apisix/charts/etcd/
vim values.yaml
 18   storageClass: "local-storage"	# 18行，定義storageClass 為：local-storage

這裡還需要考慮一個問題，我這裡是三物理節點的叢集，因為 master 不參與 pod排程，因此這裡無法元件三節點的 etcd 叢集，因此需要能夠將pod排程到master節點，進行如下配置：

#設定容忍所有汙點的key，即允許排程到 master節點
vim values.yaml
452 tolerations:
453 - operator: "Exists"

apisix節點採用daemonSet

預設，apisix pod 採用的是 Deployment 控制器，需要修改為 daemonSet，這樣從每個物理節點都可訪問到 ingress controller

cd apisix/
vim values.yaml
#日誌為true，啟用 daemonSet控制器
useDaemonSet: true  
...
#設定容忍所有汙點，即可排程到master節點
tolerations:
- operator: "Exists"	
...
#開啟dashboard
dashboard:
enabled: true	
...
#設定基於kubernetes的服務發現
...
    envs:
      - KUBERNETES_SERVICE_HOST: "kubernetes.default.svc.cluster.local"
      - KUBERNETES_SERVICE_PORT: "443"
...
rbac:
  create: true
...
  discovery:
    enabled: true
    registry:
      kubernetes:
        service:
          schema: https
          host: ${KUBERNETES_SERVICE_HOST}
          port: ${KUBERNETES_SERVICE_PORT}
          //是否需要這個token
        client:
          token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
        namespace_selector:
          equal: default
        shared_size: 1m
        watch_endpoint_slices: false
        
#設定 ingress-controller
ingress-controller:
  enabled: true
  config:
    kubernetes:
      enableGatewayAPI: true
    apisix:
      adminAPIVersion: "v3"
      serviceNamespace: ingress-apisix

執行helm安裝

helm install apisix . --namespace ingress-apisix --create-namespace -f values.yaml
NAME: apisix
LAST DEPLOYED: Wed Apr 24 11:21:11 2024
NAMESPACE: ingress-apisix
STATUS: deployed
REVISION: 1
NOTES:
1. Get the application URL by running these commands:
  export NODE_PORT=$(kubectl get --namespace ingress-apisix -o jsonpath="{.spec.ports[0].nodePort}" services apisix-gateway)
  export NODE_IP=$(kubectl get nodes --namespace ingress-apisix -o jsonpath="{.items[0].status.addresses[0].address}")
  echo http://$NODE_IP:$NODE_PORT

檢視pod及服務

kubectl get po -n ingress-apisix -o wide
NAME                                        READY   STATUS    RESTARTS        AGE     IP           NODE         NOMINATED NODE   READINESS GATES
apisix-dashboard-9f6696d8f-z5f9x            1/1     Running   4 (3m36s ago)   4m47s   10.244.1.4   k8s-node02   <none>           <none>
apisix-wbx79                                1/1     Running   0               20s     10.244.0.8   k8s-master   <none>           <none>
apisix-7nt8t                                1/1     Running   0               4m47s   10.244.2.3   k8s-node01   <none>           <none>
apisix-jgqfn                                1/1     Running   0               72s     10.244.1.8   k8s-node02   <none>           <none>
apisix-etcd-1                               1/1     Running   0               39s     10.244.0.7   k8s-master   <none>           <none>
apisix-etcd-0                               1/1     Running   0               4m47s   10.244.2.4   k8s-node01   <none>           <none>
apisix-etcd-2                               1/1     Running   0               101s    10.244.1.7   k8s-node02   <none>           <none>
apisix-ingress-controller-7dd4cd4f5-9pbn6   1/1     Running   0               102s    10.244.2.5   k8s-node01   <none>           <none>

手動整理下，可以看到 pod 中 etcd和apisix 都實現了三個節點，每個節點一個Pod的需求。

服務

kubectl get svc -n ingress-apisix
NAME                                       TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
apisix-admin                               ClusterIP   10.104.110.134   <none>        9180/TCP                     8m30s
apisix-dashboard                           ClusterIP   10.104.148.32    <none>        80/TCP                       8m30s
apisix-etcd                                ClusterIP   10.103.56.180    <none>        2379/TCP,2380/TCP            8m30s
apisix-etcd-headless                       ClusterIP   None             <none>        2379/TCP,2380/TCP            8m30s
apisix-gateway                             NodePort    10.110.254.20    <none>        80:30952/TCP                 8m30s
apisix-ingress-controller                  ClusterIP   10.101.74.8      <none>        80/TCP                       5m26s
apisix-ingress-controller-apisix-gateway   NodePort    10.106.101.32    <none>        80:32029/TCP,443:30677/TCP   5m26s

apisix修改gateway監聽80埠

在沒有LB的情況下，一般希望 gateway 會監聽到80 或者 443 埠，這裡就需要進行如下修改。

最好不要去直接修改控制器，而是修改 chart 然後進行 upgrade

vim apisix/templates/deployment.yaml
...

          ports:
            - name: http
              containerPort: {{ .Values.service.http.containerPort }}
              hostPort: {{ .Values.service.http.hostPort }} #直接使用Pod的 hostport進行埠對映
              protocol: TCP
            {{- range .Values.service.http.additionalContainerPorts }}
            - name: http-{{ .port | toString }}
              containerPort: {{ .port }}
              protocol: TCP
            {{- end }}
            - name: tls
              containerPort: {{ .Values.apisix.ssl.containerPort }}
              hostPort: {{ .Values.apisix.ssl.hostPort }} #直接使用Pod的 hostport進行埠對映
              protocol: TCP

...

然後在 values.yaml進行定義：
vim apisix/values.yaml
  http:
    enabled: true
    servicePort: 80
    hostPort: 80
    containerPort: 9080
    # -- Support multiple http ports, See [Configuration](https://github.com/apache/apisix/blob/0bc65ea9acd726f79f80ae0abd8f50b7eb172e3d/conf/config-default.yaml#L24)
    additionalContainerPorts: []
      # - port: 9081
      #   enable_http2: true          # If not set, the default value is `false`.
      # - ip: 127.0.0.2               # Specific IP, If not set, the default value is `0.0.0.0`.
      #   port: 9082
      #   enable_http2: true
  # -- Apache APISIX service settings for tls
  tls:
    servicePort: 443
    hostPort: 443

進行上面修改後，升級chart

cd apisix/
helm upgrade  apisix . --namespace ingress-apisix --create-namespace -f values.yaml
Release "apisix" has been upgraded. Happy Helming!
NAME: apisix
LAST DEPLOYED: Thu Apr 25 16:15:51 2024
NAMESPACE: ingress-apisix
STATUS: deployed
REVISION: 2
NOTES:
1. Get the application URL by running these commands:
  export NODE_PORT=$(kubectl get --namespace ingress-apisix -o jsonpath="{.spec.ports[0].nodePort}" services apisix-gateway)
  export NODE_IP=$(kubectl get nodes --namespace ingress-apisix -o jsonpath="{.items[0].status.addresses[0].address}")
  echo http://$NODE_IP:$NODE_PORT

瀏覽器訪問80 埠

到此，gateway 已經開啟了監聽80 埠。

apisix修改dashboard監聽9000

將 dashborad 修改為監聽9000 埠，還是如上操作即可。

vim apisix/charts/apisix-dashboard/templates/deployment.yaml
...
          ports:
            - name: http
              containerPort: {{ .Values.config.conf.listen.port }}
              hostPort: {{ .Values.config.conf.listen.hostPort }}
...

修改 values.yaml
vim apisix/charts/apisix-dashboard/values.yaml
...
config:
  conf:
    listen:
      # -- The address on which the Manager API should listen.
      # The default value is 0.0.0.0, if want to specify, please enable it.
      # This value accepts IPv4, IPv6, and hostname.
      host: 0.0.0.0
      # -- The port on which the Manager API should listen.
      port: 9000
      hostPort: 9000
...

進行上面修改後，升級chart

cd apisix/
helm upgrade  apisix . --namespace ingress-apisix --create-namespace -f values.yaml
Release "apisix" has been upgraded. Happy Helming!
NAME: apisix
LAST DEPLOYED: Thu Apr 25 16:25:27 2024
NAMESPACE: ingress-apisix
STATUS: deployed
REVISION: 3
NOTES:
1. Get the application URL by running these commands:
  export NODE_PORT=$(kubectl get --namespace ingress-apisix -o jsonpath="{.spec.ports[0].nodePort}" services apisix-gateway)
  export NODE_IP=$(kubectl get nodes --namespace ingress-apisix -o jsonpath="{.items[0].status.addresses[0].address}")
  echo http://$NODE_IP:$NODE_PORT

透過瀏覽器訪問9000，首先確定 dashboard Pod執行在那個物理節點

kubectl get po -n ingress-apisix  -o wide | egrep dashboard
apisix-dashboard-fd4d9fdc8-wrdnv            1/1     Running   0          69s     10.244.2.7   k8s-node02   <none>           <none>

執行在 k8s-node02 IP是 192.168.199.103 瀏覽器訪問

預設使用者名稱：admin 密碼：admin

到此，可以透過 dashboard 直接配置路由規則。

透過dashboard 配置路由規則

建立測試Pod

kubectl create deployment ngx --image nginx:alpine --replicas 2 --port 80
kubectl expose deployment ngx --port 80 --target-port 80 --name ngx

dashboard配置規則

點選下一步

然後只需下一步、下一步、提交就好了。

訪問成功，可自行修改下Pod中的頁面，然後重新整理檢視是否輪詢。

--- EOF ---

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