查看“K8s应用”的源代码

=Monitoring=

[https://www.kancloud.cn/huyipow/prometheus/527093 如何以优雅的姿势监控kubernetes 集群服务]

=进阶=
rancher
=2020=
每天5分钟的，以前应该有笔记的吧
https://www.cnblogs.com/CloudMan6/p/8323420.html





[https://www.cnblogs.com/CloudMan6/p/8336904.html 用 Deployment 运行应用 - 每天5分钟玩转 Docker 容器技术（123）]

=Kubernetes存储体系 PV PVC =

[https://my.oschina.net/u/1787735/blog/4669428 详解Kubernetes存储体系]

=kubernetes中服务的暴露访问方式=

2. Loadbalancer
使用NodeIp+Nodeport的方式实现，利用云平台提供的loadbalance服务，像aws、azure、openstack、gce都提供了loadbalance服务

这里不做介绍了

3. Ingress
Ingress 使用开源的反向代理负载均衡器来实现对外暴漏服务，比如 Nginx、Apache、Haproxy等。Nginx Ingress 一般有三个组件组成：

Nginx 反向代理负载均衡器
Ingress Controller 可以理解为控制器，它通过不断的跟 Kubernetes API 交互，实时获取后端 Service、Pod 等的变化，比如新增、删除等，然后结合 Ingress 定义的规则生成配置，然后动态更新上边的 Nginx 负载均衡器，并刷新使配置生效，来达到服务自动发现的作用。
Ingress 则是定义规则，通过它定义某个域名的请求过来之后转发到集群中指定的 Service。它可以通过 Yaml 文件定义，可以给一个或多个 Service 定义一个或多个 Ingress 规则。
--------------------- 
[https://blog.csdn.net/newcrane/article/details/79092577  kubernetes中服务的暴露访问方式kubernetes ingress使用]

=国内应用例子=
[https://my.oschina.net/u/3330830/blog/4917386 国内最具影响力科技创投媒体36Kr的容器化之路]


= k8s 应用部署=

[https://www.jenkins.io/doc/book/installing/kubernetes/ k8s jenkins]

==mediawiki k8s ==

[[Docker 安装mediawiki]]

[https://jaas.ai/u/juju/mediawiki-k8s/3 mediawiki k8s]

==k8s mysql5.7 NFS 持久化==
=== NFS ===
<pre>
 mkdir -p /data/k8s/mysql


yum -y install nfs-utils

root@work2 ~]# cat /etc/exports
/data/k8s/ 192.168.88.0/24(sync,rw,no_root_squash)

</pre>

===创建命名空间===
 kubectl create namespace db-mysql

===mysql-nfs-pv.yaml ===
<pre>

#k8s master 

cat > /root/mysqltest/mysql-nfs-pv.yaml  <<EOF
kind: PersistentVolume
apiVersion: v1
metadata:
  name: mysql-nfs-pv
  namespace: db-mysql
spec:
  accessModes:
    - ReadWriteOnce      
  capacity:
    storage: 2Gi
  persistentVolumeReclaimPolicy: Retain
  storageClassName: nfs
  nfs:
    path: /data/k8s/mysql
    server: 192.168.88.22

EOF

kubectl apply -f mysql-nfs-pv.yaml

</pre>


=== mysql-nfs-pvc.yaml===
<pre>
cat > /root/mysqltest/mysql-nfs-pvc.yaml <<EOF

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: mysql-nfs-pvc
  namespace: db-mysql
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 2Gi
  storageClassName: nfs 

EOF


kubecte apply -f mysql-nfs-pvc.yaml
</pre>



===mysql-nfs-deploy.yaml ===
<pre>

cat > /root/mysqltest/mysql-nfs-deploy.yaml <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql-nfs-deploy
  namespace: db-mysql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysql_nfs
  template:
    metadata:
      labels:
        app: mysql_nfs
    spec:
      containers:
      - name: mysql57
        image: mysql:5.7
        imagePullPolicy: IfNotPresent
        
        env:                        
        - name: MYSQL_ROOT_PASSWORD
          value: "123456"
        args:
        - --lower_case_table_names=1
        ports:
        - containerPort: 3306
        volumeMounts:
        - name: mysql-persistent-storage
          mountPath: /var/lib/mysql         
      volumes:
      - name: mysql-persistent-storage
        persistentVolumeClaim:
          claimName: mysql-nfs-pvc      
EOF

kubectl apply -f mysql-nfs-deploy.yam

</pre>



=== mysql-nfs-svc.yaml===
<pre>
cat > /root/mysqltest/mysql-nfs-svc.yaml <<EOF
apiVersion: v1
kind: Service
metadata:
  name: mysql
  namespace: db-mysql
spec:
  type: NodePort
  ports:
  - port: 3306
    targetPort: 3306
    nodePort: 32306
  selector:
    app: mysql_nfs

EOF

</pre>



===查看相关 ===
<pre>


 kubectl get pods -A -o wide

root@k8s-master:~/mysqltest# kubectl get pods -A -o wide | grep mysql-nfs 
default       mysql-nfs-deploy-5f4fc57696-x49mw    1/1     Running             15 (5m27s ago)   84m     10.244.1.2      k8s-node1    <none>           <none>
root@k8s-master:~/mysqltest# 


</pre>

===查看mysql数据 on nfs master ===
<pre>
证明 这个nfs没问题呀  

# ls /data/k8s/mysql/
auto.cnf    ca.pem           client-key.pem  ib_logfile0  ibtmp1  performance_schema  public_key.pem   server-key.pem
ca-key.pem  client-cert.pem  ibdata1         ib_logfile1  mysql   private_key.pem     server-cert.pem
[root@work2 ~]# 

</pre>

===login mysql and other  ===

<pre>
kubectl exec -it mysql-nfs-deploy-5f4fc57696-x49mw /bin/bash

直接容器里面  没密码 哈哈 
 mysql -u root -p
 
 
 ysql> create database evan;
 
  在nfs 服务器
  
  ls  /data/k8s/mysql/evan/
db.opt



kubectl logs


遇上 mysql有bug  
kubectl logs mysql-nfs-deploy-5f4fc57696-x49mw

 We intentionally generate a memory trap
 
 
 
 超级教程   k8s部署mysql数据持久化 
 https://www.cnblogs.com/pluto-charon/p/14411780.html
</pre>
[http://article.docway.net/details?id=606bf9430a6c642cafe25798 K8S 部署 Mysql(NFS 持久化)]

=see also=

==VPS==

===digitalocean===
 用他的服务 10/mo
 如果是自己建呢  有CPU要求呢 还是买他的吧  两台 10/mon 但是自由,试一下这个行不行先， 等于还多了两个vm,不过上次的helm 2还是不成功呢

[https://juejin.im/post/5caa00346fb9a05e677e8c52 在DigitalOcean玩Kubernetes(K8S)]

https://www.digitalocean.com/docs/kubernetes/overview/

===vultr===
 这个看起来贵一点 这个vps下次暂停一下 不要浪费一个月5刀呢

==[[K8s on aliyun]]==

==othre==

[https://www.centos.bz/2018/10/kubernetes%E4%BD%BF%E7%94%A8%E8%BF%87%E7%A8%8B%E4%B8%AD%E9%81%87%E5%88%B0%E7%9A%84%E4%B8%80%E4%BA%9B%E9%97%AE%E9%A2%98%E4%B8%8E%E8%A7%A3%E5%86%B3%E6%96%B9%E6%B3%95/ Kubernetes使用过程中遇到的一些问题与解决方法]


[https://www.jianshu.com/p/65c4baadf5d9 从零开始搭建Kubernetes集群（六、在K8S上部署Redis 集群）]

[https://www.jianshu.com/p/feeea0bbd73e 从零开始搭建Kubernetes集群（五、搭建K8S Ingress]


[https://www.jianshu.com/p/6f42ac331d8a 从零开始搭建Kubernetes集群（四、搭建K8S Dashboard）]


[https://www.jianshu.com/p/b264b6cf9340 从零开始搭建Kubernetes集群（七、如何监控K8S集群日志）]

[https://blog.51cto.com/superleedo/2050208 在kubernetes中部署tomcat与mysql集群]


[https://yq.aliyun.com/articles/448676 全面提升，阿里云Docker/Kubernetes(K8S) 日志解决方案与选型对比]

[https://my.oschina.net/u/3994209/blog/2998856 部署你的第一个ASP.NET Core应用到k8s集群]



[https://www.jianshu.com/p/65c4baadf5d9 从零开始搭建Kubernetes集群（六、在K8S上部署Redis 集群）]


[https://www.centos.bz/2017/07/kubernetes-deploy-test-nginx-service/ Kubernetes(k8s)部署并测试nginx service]


[https://www.centos.bz/2018/10/%E4%B8%AA%E6%8E%A8%E5%9F%BA%E4%BA%8E-docker-%E5%92%8C-kubernetes-%E7%9A%84%E5%BE%AE%E6%9C%8D%E5%8A%A1%E5%AE%9E%E8%B7%B5/ 个推基于 Docker 和 Kubernetes 的微服务实践]



[https://linuxtoy.org/archives/nextcontainer.html 《拥抱下一代容器化工具》视频及电子书发布]

[https://github.com/helm/charts/tree/master/incubator/gogs helm gogs]


[https://blog.csdn.net/AtlanSI/article/details/80849927 K8S集群搭建，并部署nginx实现跨网络访问]
===java tomcat ===

[https://blog.csdn.net/u013201439/article/details/79306417 Kubernetes】部署Tomcat服务]


[https://blog.csdn.net/ljx1528/article/details/85259401 k8s部署tomcat数据持久化]


[https://blog.csdn.net/MassiveStars/article/details/54352484 Docker实践 - 安装Docker并在容器里运行tomcat]

==trouble==

[http://itindex.net/detail/57343-kube-proxy-%E5%A4%96%E9%83%A8 使用kube-proxy让外部网络访问K8S service的ClusterIP]


[https://www.cnblogs.com/puroc/p/6337045.html telnet master主机的NodePort服务不通的问题]


[https://blog.csdn.net/weixin_38380858/article/details/88830853 kubernetes踩坑：nodePort拒绝访问的问题]

[https://www.jianshu.com/p/ce1028c1cbc0 通过NodePort向k8s集群外部暴露服务]

[https://www.cnblogs.com/aguncn/p/7202676.html K8s的内部Pod之间都不通，搞了快两天]


[https://www.cnblogs.com/lykops/p/7348020.html 使用kube-proxy让外部网络访问K8S service的ClusterIP]

[https://blog.csdn.net/zhonglinzhang/article/details/86074298 【kubernetes/k8s概念】kube-proxy启动参数]




[[category:k8s]]