From 7fc3a6b1cec8a71e44c4cfdca359c581d9bc845f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E9=BB=84=E6=B5=B7?= <10402852@qq.com> Date: Mon, 16 Sep 2024 20:59:26 +0800 Subject: [PATCH] 'commit' --- 操作文档/1、K8S搭建/搭建k8s集群.md | 308 +++++++++++++++++- 1 file changed, 298 insertions(+), 10 deletions(-) diff --git a/操作文档/1、K8S搭建/搭建k8s集群.md b/操作文档/1、K8S搭建/搭建k8s集群.md index f2b1369f..8024749c 100644 --- a/操作文档/1、K8S搭建/搭建k8s集群.md +++ b/操作文档/1、K8S搭建/搭建k8s集群.md @@ -793,35 +793,323 @@ https://blog.csdn.net/nuptaxin/article/details/124008353 ### 七、其它软件安装 -k8s集群部署mysql完整过程记录 +#### $7.1$ 部署$mysql$ -https://www.cnblogs.com/blayn/p/16037199.html +> https://www.cnblogs.com/blayn/p/16037199.html +在$k8s$集群中挂载$MySQL$数据卷 需要安装一个$NFS$。 +在 **主节点** 安装$NFS$ -K8S用yaml资源清单部署redis数据库，数据持久化保存 +```shell +yum install -y nfs-utils rpcbind +``` + +在 **主节点** 创建目录 + +```shell +mkdir -p /nfs +chmod 777 /nfs +``` + +　 + +更改归属组与用户 + +```shell +#chown -R nfsnobody:nfsnobody /nfs +``` + +　 + +配置共享目录 + +```shell +echo "/nfs *(insecure,rw,sync,no_root_squash)" > /etc/exports +``` + +　　 + +创建$mysql$共享目录 + +```shell +mkdir -p /nfs/mysql +``` -https://devpress.csdn.net/k8s/66c9a10413e4054e7e7d4f79.html +启动服务+设置开启启动 -K8s - 安装部署MongoDB数据库教程1（单实例） +```shell +systemctl enable --now nfs-server rpcbind +``` + +检查 + +```shell +[root@k8s-master openresty]# exportfs +showmount -e 10.10.14.200 +/nfs +Export list for 10.10.14.200: +/nfs * +``` -https://www.cnblogs.com/gaoyanbing/p/17694272.html +通过 +``` +mkdir /data/mysql/data -p +mkdir /data/mysql/logs -p +``` -k8s部署单点的minio集群 -https://blog.csdn.net/baidu_35848778/article/details/131436354 +**创建$MySQL$ $Deployment$** + +编写一个 `mysql.yaml` 配置文件 + +```yaml +apiVersion: apps/v1 # apiserver的版本 +kind: Deployment # 副本控制器deployment，管理pod和RS +metadata: + name: mysql # deployment的名称，全局唯一 + namespace: default # deployment所在的命名空间 + labels: + app: mysql +spec: + replicas: 1 # Pod副本期待数量 + selector: + matchLabels: # 定义RS的标签 + app: mysql # 符合目标的Pod拥有此标签 + strategy: # 定义升级的策略 + type: RollingUpdate # 滚动升级，逐步替换的策略 + template: # 根据此模板创建Pod的副本（实例） + metadata: + labels: + app: mysql # Pod副本的标签，对应RS的Selector + spec: + nodeName: k8s-node1 # 指定pod运行在的node + containers: # Pod里容器的定义部分 + - name: mysql # 容器的名称 + image: swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/mysql:5.7.44 # 容器对应的docker镜像 + volumeMounts: # 容器内挂载点的定义部分 + - name: time-zone # 容器内挂载点名称 + mountPath: /etc/localtime # 容器内挂载点路径，可以是文件或目录 + - name: mysql-data + mountPath: /var/lib/mysql # 容器内mysql的数据目录 + - name: mysql-logs + mountPath: /var/log/mysql # 容器内mysql的日志目录 + ports: + - containerPort: 3306 # 容器暴露的端口号 + env: # 写入到容器内的环境容量 + - name: MYSQL_ROOT_PASSWORD # 定义了一个mysql的root密码的变量 + value: "root" + volumes: # 本地需要挂载到容器里的数据卷定义部分 + - name: time-zone # 数据卷名称，需要与容器内挂载点名称一致 + hostPath: + path: /etc/localtime # 挂载到容器里的路径，将localtime文件挂载到容器里，可让容器使用本地的时区 + - name: mysql-data + hostPath: + path: /data/mysql/data # 本地存放mysql数据的目录 + - name: mysql-logs + hostPath: + path: /data/mysql/logs # 本地存入mysql日志的目录 +``` + +将 `mysql-deployment.yaml`配置文件上传至虚拟机的 /root 目录下，在 /root 目录下执行命令： + +```shell +kubectl create -f mysql.yaml +``` + +![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202409162012122.png) + +执行添加服务的命令（这行不执行应该也不影响结果）： + +```shell +kubectl apply -f mysql.yaml +``` + +![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202409162014765.png) + + + +编写一个提供对外访问的service `mysql-svc.yaml`： + +```yaml +apiVersion: v1 +kind: Service +metadata: + name: mysql + labels: + name: mysql +spec: + type: NodePort + ports: + - port: 3306 + targetPort: 3306 + nodePort: 30001 + selector: + app: mysql +``` + +将 `mysql-svc.yaml`配置文件上传至虚拟机的 /root 目录下，在 /root 目录下执行命令： + +```shell +kubectl create -f mysql-svc.yaml +``` + +![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202409162015173.png) + +　　 + +访问数据库并验证其运行正常 + +```shell +kubectl get pod +``` + +![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202409162018178.png) + +删除$pods$ + +``` +kubectl delete pods el-admin-mysql-rc-z2xjr +``` + +![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202409162019824.png) + +![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202409162027325.png) + +mysqld failed while attempting to check config + +![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202409162039179.png) + +```shell +# 查看日志 +kubectl describe pod mysql-db89ddf68-gf45x + + +kubectl get events --field-selector involvedObject.name=mysql-db89ddf68-gf45x + +kubectl logs mysql-db89ddf68-gf45x -c + +[root@k8s-master ~]# kubectl logs mysql-db89ddf68-gf45x +2024-09-16 20:45:16+08:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.44-1.el7 started. +2024-09-16 20:45:28+08:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config + command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.lFVXa084HQ +``` + + + +```shell + kubectl exec -it mysql-db89ddf68-gf45x --mysql -uroot -pDsideaL147258369 +``` + + + +(密码也是root) + +## mysql开放远程连接： + +GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION; + +flush privileges; #刷新权限表，使配置生效 + +## 开启防火墙端口 + +systemctl start firewalld.service + +firewall-cmd --zone=public --add-port=6443/tcp --permanent + +firewall-cmd --zone=public --add-port=30001/tcp --permanent + +firewall-cmd --reload + +firewall-cmd --zone=public --list-ports + +systemctl stop firewalld.service + +systemctl disable firewalld.service + +要开放6443端口（k8s集群连接地址）和30001端口（k8s集群mysql端口） + +## 查看已安装的mysql + +kubectl get pod + +kubectl get svc + +mysql服务安装在default命名空间中，查看其所在节点： + +kubectl get pod -n default -o wide + +此次部署的mysql服务被我们指定运行在了 k8s-worker01 节点上。 + + + +在本地用SQLyog连接到k8s集群的mysql： + +#### $7.2$ 部署$redis$ + +> https://devpress.csdn.net/k8s/66c9a10413e4054e7e7d4f79.html + + + +#### $7.3$ 部署$MongoDB$ + +> https://www.cnblogs.com/gaoyanbing/p/17694272.html + + + +#### $7.4$ 部署$Minio$ + +> https://blog.csdn.net/baidu_35848778/article/details/131436354 ### 八、资料 -**kubeadm部署kubernetes1.29** +**[kubernetes](https://link.csdn.net/?target=https%3A%2F%2Flink.csdn.net%2F%3Ftarget%3Dhttps%3A%2F%2Fgitcode.com%2Fgh_mirrors%2Fk8s%2Fk8s-deploy%3Futm_source%3Ddevpress_k8s%26login%3Dfrom_csdn) 可能会产生垃圾或者僵尸pod，在删除rc的时候，相应的pod没有被删除，手动删除pod后会自动重新创建，这时一般需要先删除掉相关联的resources** -https://blog.csdn.net/ljx1528/article/details/137714292 +**原因** + +**先删除pod的话，马上会创建一个新的pod，因为[deploy](https://link.csdn.net/?target=https%3A%2F%2Flink.csdn.net%2F%3Ftarget%3Dhttps%3A%2F%2Fgitcode.com%2Fgh_mirrors%2Fk8s%2Fk8s-deploy%3Futm_source%3Ddevpress_k8s%26login%3Dfrom_csdn)ment.yaml文件中定义了副本数量** + +**正确方法** + +先删除[deploy](https://link.csdn.net/?target=https%3A%2F%2Flink.csdn.net%2F%3Ftarget%3Dhttps%3A%2F%2Fgitcode.com%2Fgh_mirrors%2Fk8s%2Fk8s-deploy%3Futm_source%3Ddevpress_k8s%26login%3Dfrom_csdn)ment +查看[deploy](https://link.csdn.net/?target=https%3A%2F%2Flink.csdn.net%2F%3Ftarget%3Dhttps%3A%2F%2Fgitcode.com%2Fgh_mirrors%2Fk8s%2Fk8s-deploy%3Futm_source%3Ddevpress_k8s%26login%3Dfrom_csdn)ment + +```routeros +kubectl get deployment +``` + +删除[deploy](https://link.csdn.net/?target=https%3A%2F%2Flink.csdn.net%2F%3Ftarget%3Dhttps%3A%2F%2Fgitcode.com%2Fgh_mirrors%2Fk8s%2Fk8s-deploy%3Futm_source%3Ddevpress_k8s%26login%3Dfrom_csdn)ment + +```pgsql +kubectl delete deployment +``` + +然后再删除pod + +```pgsql +kubectl delete pod +``` + +如果pod还在的话 +查看rc和rs + +```routeros +kubectl get rc +kubectl get rs +``` + +把pod对应的都删除即可 + +```pgsql +kubectl delete rc +kubectl delete rs +```