cs@debian:/$ tree -Ld  1
.
├── bin
├── boot
├── dev
├── etc
├── home
├── lib
├── lib64
├── lost+found
├── media
├── mnt
├── opt
├── proc
├── root
├── run
├── sbin
├── snap
├── srv
├── sys
├── tmp
├── usr
└── var

cs@debian:/opt/apache$ tree -Ldf  1 ./
.
├── ./apache-maven-3.8.6
├── ./kafka-2.1.1
├── ./maven-3.6.0
├── ./tomcat-8.5.38
└── ./zookeeper-3.4.13

5 directories
cs@debian:/opt/apache$ tree -Ldf  1 /opt/apache/
/opt/apache
├── /opt/apache/apache-maven-3.8.6
├── /opt/apache/kafka-2.1.1
├── /opt/apache/maven-3.6.0
├── /opt/apache/tomcat-8.5.38
└── /opt/apache/zookeeper-3.4.13

5 directories

cs@debian:~/oss/hexo$ wget https://dlcdn.apache.org/maven/maven-3/3.8.6/binaries/apache-maven-3.8.6-bin.tar.gz -O apache-maven-3.8.6-bin.tar.gz
cs@debian:~/oss/hexo$ tar -zxvf apache-maven-3.8.6-bin.tar.gz -C /opt/apache
cs@debian:~/oss/hexo$ cat >>  ~/.bashrc <<EOF
#maven
if [ -d "/opt/apache/maven-3.8.6" ] ; then
    export MAVEN_HOME=/opt/apache/maven-3.8.6
    export PATH=${MAVEN_HOME}/bin:\$PATH
fi
EOF

cs@debian:~/oss/hexo$ mvn -version

mvn compile　

mvn test　

mvn clean

mvn package　

mvn install　　

mvn install -Dmaven.test.skip

mvn deploy　　

certificatesigningrequests (缩写 csr)
componentstatuses (缩写 cs)
configmaps (缩写 cm)
customresourcedefinition (缩写 crd)
daemonsets (缩写 ds)
deployments (缩写 deploy)
endpoints (缩写 ep)
events (缩写 ev)
horizontalpodautoscalers (缩写 hpa)
ingresses (缩写 ing)
limitranges (缩写 limits)
namespaces (缩写 ns)
networkpolicies (缩写 netpol)
nodes (缩写 no)
persistentvolumeclaims (缩写 pvc)
persistentvolumes (缩写 pv)
poddisruptionbudgets (缩写 pdb)
pods (缩写 po)
podsecuritypolicies (缩写 psp)
replicasets (缩写 rs)
replicationcontrollers (缩写 rc)
resourcequotas (缩写 quota)
serviceaccounts (缩写 sa)
services (缩写 svc)
statefulsets (缩写 sts)
storageclasses (缩写 sc)

sudo apt install bash-completion

source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)

echo "source <(kubectl completion bash)" >> ~/.bashrc

cs@debian:~$ kubectl get cs
NAME                 STATUS    MESSAGE              ERROR
scheduler            Healthy   ok                   
controller-manager   Healthy   ok                   
etcd-2               Healthy   {"health": "true"}   
etcd-0               Healthy   {"health": "true"}   
etcd-1               Healthy   {"health": "true"}  

cs@debian:~$ kubectl  get node
NAME       STATUS   ROLES    AGE    VERSION
master02   Ready    <none>   101d   v1.18.8
master03   Ready    <none>   101d   v1.18.8
node04     Ready    <none>   101d   v1.18.8
node05     Ready    <none>   101d   v1.18.8
node06     Ready    <none>   101d   v1.18.8

kubectl get node -o wide

# Install Traefik Resource Definitions:
kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.10/docs/content/reference/dynamic-configuration/kubernetes-crd-definition-v1.yml

# Install RBAC for Traefik:
kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.10/docs/content/reference/dynamic-configuration/kubernetes-crd-rbac.yml

$bash traefik.sh
$ tree  ./test
./test
├── 1-crd.yaml
├── 2-rbac.yaml
├── 3-role.yaml
├── 4-static_config.yaml
├── 5-dynamic_toml.toml
├── 6-deploy.yaml
├── 7-service.yaml
└── 8-ingress.yaml

❯ helm install -f ./traefik/values.yaml  -name traefik   --namespace kube-system  ./traefik
NAME: traefik
LAST DEPLOYED: Wed Sep  6 20:00:43 2023
NAMESPACE: kube-system
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
Traefik Proxy v2.10.4 has been deployed successfully on kube-system namespace !
❯ helm upgrade  -name traefik --namespace kube-system  ./traefik
Release "traefik" has been upgraded. Happy Helming!
NAME: traefik
LAST DEPLOYED: Wed Sep  6 20:08:33 2023
NAMESPACE: kube-system
STATUS: deployed
REVISION: 2
TEST SUITE: None
NOTES:
Traefik Proxy v2.10.4 has been deployed successfully on kube-system namespace !
❯helm uninstall  -name traefik --namespace kube-system
release "traefik" uninstalled

#https://docs.nginx.com/nginx-ingress-controller
❯  helm repo add nginx-stable https://helm.nginx.com/stable
"nginx-stable" has been added to your repositories
❯ helm pull nginx-stable/nginx-ingress --untar

#https://github.com/kubernetes/ingress-nginx 
❯ helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
"ingress-nginx" has been added to your repositories
❯ helm pull ingress-nginx/ingress-nginx --untar

❯ kubectl get validatingwebhookconfigurations.admissionregistration.k8s.io
NAME                      WEBHOOKS   AGE
ingress-nginx-admission   1          42s

❯ kubectl delete -A validatingwebhookconfigurations.admissionregistration.k8s.io ingress-nginx-admission
validatingwebhookconfiguration.admissionregistration.k8s.io "ingress-nginx-admission" deleted

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: todo
  namespace: default
  annotations:
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/app-root: /app/
    nginx.ingress.kubernetes.io/rewrite-target: /$2
    nginx.ingress.kubernetes.io/configuration-snippet: |
      rewrite ^(/app)$ $1/ redirect;
      rewrite ^/stylesheets/(.*)$ /app/stylesheets/$1 redirect;
      rewrite ^/images/(.*)$ /app/images/$1 redirect;
spec:
  rules:
  - host: todo.qikqiak.com
    http:
      paths:
      - backend:
          serviceName: todo
          servicePort: 3000
        path: /app(/|$)(.*)

$ etcdctl set /atomic.io/network/config '{"Network":"121.21.0.0/16","Backend":{"Type":"vxlan"}}'

$ etcdctl put /atomic.io/network/config '{"Network":"121.21.0.0/16","Backend":{"Type":"vxlan"}}'
$ etcdctl del /atomic.io/network/config

kubectl create clusterrolebinding test:anonymous --clusterrole=cluster-admin --user=system:anonymous

[vagrant@k8s master]$ kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap
clusterrolebinding.rbac.authorization.k8s.io/kubelet-bootstrap created

 sduo  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 -- ip_vs_nq
modprobe -- nf_conntrack_ipv4
EOF

[root@k8s kubernetes]# cat > /etc/sysctl.d/k8s.conf << EOF
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

	cat>/usr/lib/systemd/system/kubelet.service<<EOF
[Unit]
Description=Kubernetes Kubelet Server
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=docker.service
Requires=docker.service

[Service]
WorkingDirectory=/var/lib/kubelet
EnvironmentFile=/opt/kubernetes/kubelet.env
ExecStart=/opt/kubernetes/bin/kubelet  \$KUBELET_OPTIONS
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

 cat>/opt/kubernetes/kubelet.env<<EOF
 KUBELET_OPTIONS=" --hostname-override=192.168.56.108 \
  --pod-infra-container-image=k8s.org/k8s/pause:3.4.1 \
  --bootstrap-kubeconfig=/opt/kubernetes/config/bootstrap.kubeconfig \
  --kubeconfig=/opt/kubernetes/config/kubelet.kubeconfig \
   --config=/opt/kubernetes/config/kubelet-conf.yaml   \
  --register-node=true \
  --cni-bin-dir=/opt/kubernetes/cni/bin --cni-conf-dir=/opt/kubernetes/cni/net.d --network-plugin=cni  \
   --runtime-cgroups=/systemd/system.slice  \
  --logtostderr=true "
EOF

--etcd-servers-overrides=/events#https://xxx:3379;https://xxx:3379;https://xxx:3379;https://xxxx:3379;https://xxx:3379

#!/bin/bash

DIR="$(cd "$(dirname "$0")" && pwd)"
cd $DIR
export LD_LIBRARY_PATH=$DIR:$LD_LIBRARY_PATH


hosts=/etc/hosts
conf=/var/lib/redis/nodes.conf

newip=$(cat $hosts|grep redis-app|awk '{print $1}')
[ "$newip"x != ""x ] || {  echo "hosts里没有找到redis-app的ip,退出" && exit 1; }

ckeckConf(){
    [ -f "$1" ] || { echo "集群配置文件nodes.conf不存在,集群初始化中..."  && return; }
    

    echo "检查nodes.conf文件内容..."
    arr="$(cat $1|grep -E "master|slave"|awk '{print $1}')"
    len=$(echo  "${arr}" | wc -l)
    echo -e "$len条clusterid,如下: \n""${arr}"
    [ "$len" -ne 1 ] || { echo "集群配置文件clusterid数目不对,请到nfs服务器核查node.conf文件,退出" && exit 1; }


    myselfid=$(cat $1 |grep myself|awk '{print $1}')
    [ "$myselfid"x != ""x ] || {  echo "nodes.conf里没有找到myselfid,退出" && exit 1; }
     echo "把新ip写入自身clusterid文件内..."
    echo $newip > $PWD/$myselfid 
    echo "k8s重启后: $myselfid -> $newip";

    for i in ${arr};
    do
        [ -f "./$i" ] || { echo "没有./$i这个目录" && continue; }

        checkip=$(cat ./$i)
        [ "$checkip"x != ""x ] || { echo "clusterid文件内容为空" && continue; }

        echo "执行命令:ping -c1 $checkip"
        $DIR/ping -c1 $checkip
        [ $? -ne 1 ] || { echo "ping $newip 结果返回ip不通" && continue; }

        oldip=$(cat $1 |grep -E "^$i"|awk '{print $2}'|cut -d ":" -f1)
        [ "$oldip"x != ""x ] || { echo "clusterid在nodes.conf里没有搜索到ip,退出" && exit 1; }

        echo "oldip:$oldip =========== newip:$checkip"
        sed -i "s/$oldip/$checkip/g" $1
        [ $? -ne 0 ] || { echo "完成替换,clusterid:$i === ip:$checkip" && continue; }     

    done
    
    echo "配置文件nodes.conf,检查完毕..."
}

echo "$newip 开始检查配置文件nodes.conf"
ckeckConf  $conf

[ "$(which redis-server)"x != ""x ] || { echo "找不到redis-server,退出" && exit 1; }
echo "开始启动服务...."
echo "执行命令:redis-server $1 --cluster-announce-ip $newip"
redis-server $1 --cluster-announce-ip $newip

kubectl -n devops get pods
NAME          READY   STATUS    RESTARTS   AGE
redis-app-0   1/1     Running   0          50m
redis-app-1   1/1     Running   0          50m
redis-app-2   1/1     Running   0          44m
redis-app-3   1/1     Running   0          38m
redis-app-4   1/1     Running   0          38m
redis-app-5   1/1     Running   0          38m

kubectl -n devops exec -it redis-app-2 /bin/bash
kubectl -n devops exec -it redis-app-4 /bin/bash

cs@debian:~/oss/hexo$ kubectl get svc -n devops
NAME                     TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)              AGE
jenkins                  ClusterIP   121.21.92.146    <none>        8081/TCP,50000/TCP   105d
redis-headless-service   ClusterIP   None             <none>        6379/TCP             13d
redis-service            ClusterIP   121.21.24.33     <none>        6379/TCP             13d
tomcat                   ClusterIP   121.21.191.100   <none>        8082/TCP             105d

cs@debian:~/oss/hexo$ kubectl exec -it redis-app-1 -n devops  /bin/bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl kubectl exec [POD] -- [COMMAND] instead.
.............
root@redis-app-1:/data# redis-cli  -c -h 121.21.24.33 -p 6379
121.21.24.33:6379> auth 123456
OK
121.21.24.33:6379> ping
PONG
121.21.24.33:6379> get test21
-> Redirected to slot [8530] located at 121.21.35.3:6379
(error) NOAUTH Authentication required.  
121.21.35.3:6379> auth 123456
OK
121.21.35.3:6379> get test21
"20220721cs"

cs@debian:/opt/kubernetes/yaml/k8s/tcp/redis$ redis-cli  -c  -p  6379
127.0.0.1:6379> auth 123456
OK
127.0.0.1:6379> ping
PONG

cs@debian:~/oss/hexo$  kubectl  get pod --field-selector status.podIP=121.21.35.3 -o wide -n devops
NAME          READY   STATUS    RESTARTS   AGE   IP            NODE     NOMINATED NODE   READINESS GATES
redis-app-1   1/1     Running   1          9d    121.21.35.3   node04   <none>           <none>

#!/bin/sh

arr=($(kubectl get pods -l app=redis -o jsonpath='{range.items[*]}{.status.podIP}:6379 '))
echo ${arr[@]}

master=$(echo ${arr[@]}|awk '{print $1" "$2" "$3}')
echo "指定主节点:$master"
echo "yes" | kubectl exec -it redis-app-2 -- redis-cli --cluster create $master

for i in $(seq 3 +1 5); do
	echo "添加从节点:"${arr[i]}  ${arr[0]}
	echo "yes" | kubectl exec -it redis-app-2 -- redis-cli --cluster add-node  ${arr[i]}  ${arr[0]} --cluster-slave
done