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RSS订阅原创 K3s集群搭建及配置
文章目录一、k3s离线部署准备工作1. 准备节点2. 安装Docker3. [k3s官网](https://github.com/k3s-io/k3s/releases/tag/v1.18.6%2Bk3s1) 中下载部署文件。部署步骤1. 导入镜像：2. 修改文件权限：3. 安装4. 检查是否安装成功：5. 卸载k3s问题解决：1.出现kubernetes cluster unreachable:2.出现The connection to the server localhost:8080 was refu
2021-08-07 17:01:13
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原创 kubeedge部署(keadm)
文章目录一、预备环境准备条件二、kubeedge安装1.到官网下载keadm安装包2.初始化cloudcore结点3.添加edgecore结点4.安装metrics-server启用 kubectl logs 功能在云端支持 Metrics-server重要提示5.删除边结点6.遇到的问题1.edgecore与docker的CgroupDtriver不同2.边端应用要用hostNetwork模式部署一、预备环境 kubeedge是基于kubernetes运行的，所以首先需要搭建kubernetes集群
2021-08-07 16:37:11
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原创 Kong(k8s)部署及使用
文章目录一、Kong介绍二、部署postgres三、部署Kong1.迁移Kong数据库2. 部署Kong四、部署konga1.迁移konga数据库2.部署konga3.汉化Konga（可选）五、Kong的使用一、Kong介绍 Kong是一个开源的微服务网关，具有登录鉴权、熔断限流等功能，且其是基于Nginx和OpenResty开发的。 同时，Kong也提供了和k8s高度融合的Kong Ingress Controller，可以直接作为k8s的原生网关使用。 Kong从1.1版本之后开始支持db
2021-08-07 16:34:54
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原创 Prometheus(k8s)安装及操作
文章目录一、kube-prometheuse安装二、Prometheus基本使用解决node-exporter端口9100被占用的问题解决Grafana访问前缀问题三、GPU监控四、Mysql监控一、kube-prometheuse安装# 克隆仓库$ git clone -b release-0.5 https://gitee.com/lonelyZhe/kube-prometheus.git# 执行命令$ cd kube-prometheus$ kubectl create -f manif
2021-08-07 16:30:48
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原创 K8s集群搭建—Kubeadm方式
文章目录一、环境准备1. 服务器说明2. 系统设置（所有结点）2.1 主机名2.2 安装依赖包2.3 关闭防火墙、swap，重置iptables2.4 系统参数设置3. 安装docker（所有节点）4. 安装必要工具（所有结点）4.1 工具说明4.2 安装方法5. 一键配制sh命令（所有结点）二. 搭建高可用集群1. 部署keepalived - apiserver高可用（任选两个master节点）1.1 安装keepalived1.2 创建keepalived配置文件1.3 启动keepalived2.
2021-05-12 21:08:48
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原创 PAT Advanced—1143 Lowest Common Ancestor (30分)
The lowest common ancestor (LCA) of two nodes U and V in a tree is the deepest node that has both U and V as descendants.A binary search tree (BST) is recursively defined as a binary tree which has the following properties:The left subtree of a node cont
2020-07-13 23:45:57
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原创 PAT Advanced—1147 Heaps (30分)
In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if P is a parent node of C, then the key (the value) of P is either greater than or equal to (in a max heap) or less than or equal to (in a min heap) t
2020-07-08 21:15:52
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原创 PAT Advanced—1151 LCA in a Binary Tree (30分)
The lowest common ancestor (LCA) of two nodes U and V in a tree is the deepest node that has both U and V as descendants.Given any two nodes in a binary tree, you are supposed to find their LCA.Input Specification:Each input file contains one test case.
2020-07-08 20:06:50
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原创 PAT Advanced—1150 Travelling Salesman Problem (25分)
The “travelling salesman problem” asks the following question: “Given a list of cities and the distances between each pair of cities, what is the shortest possible route that visits each city and returns to the origin city?” It is an NP-hard problem in com
2020-07-07 00:16:18
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原创 PAT Advanced—1149 Dangerous Goods Packaging (25分)
When shipping goods with containers, we have to be careful not to pack some incompatible goods into the same container, or we might get ourselves in serious trouble. For example, oxidizing agent （氧化剂） must not be packed with flammable liquid （易燃液体）, or it
2020-07-05 23:45:45
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原创 PAT Advanced—1148 Werewolf - Simple Version (20分)
Werewolf（狼人杀） is a game in which the players are partitioned into two parties: the werewolves and the human beings. Suppose that in a game,player #1 said: “Player #2 is a werewolf.”;player #2 said: “Player #3 is a human.”;player #3 said: “Player #4 is a
2020-07-05 00:39:31
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原创 PAT Advanced—1155 Heap Paths (30分)
In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if P is a parent node of C, then the key (the value) of P is either greater than or equal to (in a max heap) or less than or equal to (in a min heap) t
2020-07-03 23:27:49
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原创 PAT Advanced—1154 Vertex Coloring (25分)
A proper vertex coloring is a labeling of the graph’s vertices with colors such that no two vertices sharing the same edge have the same color. A coloring using at most k colors is called a (proper) k-coloring.Now you are supposed to tell if a given color
2020-07-02 22:44:13
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原创 PAT Advanced—1153 Decode Registration Card of PAT (25分)
A registration card number of PAT consists of 4 parts:the 1st letter represents the test level, namely, T for the top level, A for advance and B for basic;the 2nd - 4th digits are the test site number, ranged from 101 to 999;the 5th - 10th digits give
2020-07-01 22:17:33
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原创 PAT Advanced—1152 Google Recruitment (20分)
In July 2004, Google posted on a giant billboard along Highway 101 in Silicon Valley (shown in the picture below) for recruitment. The content is super-simple, a URL consisting of the first 10-digit prime found in consecutive digits of the natural constant
2020-06-28 23:38:58
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原创 PAT Advanced—1028 List Sorting (25分)
Excel can sort records according to any column. Now you are supposed to imitate this function.Input Specification:Each input file contains one test case. For each case, the first line contains two integers N (≤105) and C, where N is the number of reco
2020-06-27 23:29:02
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原创 PAT Advanced—1025 PAT Ranking (25分)
Programming Ability Test (PAT) is organized by the College of Computer Science and Technology of Zhejiang University. Each test is supposed to run simultaneously in several places, and the ranklists will be merged immediately after the test. Now it is your
2020-06-19 19:25:34
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原创 PAT Advanced—1022 Digital Library (30分)
A Digital Library contains millions of books, stored according to their titles, authors, key words of their abstracts, publishers, and published years. Each book is assigned an unique 7-digit number as its ID. Given any query from a reader, you are suppose
2020-06-03 20:58:37
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原创 Android实战—蓝牙聊天功能（六）
一、项目地址二、最终效果三、填写两个layout文件<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background=
2020-06-01 23:44:45
181
原创 Android实战—百度地图定位（五）
文章目录一、项目地址二、下载百度地图SDK三、在百度平台创建应用1. 创建应用2. 获取SHA1四、遇到的问题：1.地图只有网格一、项目地址 https://gitee.com/lonelyZhe/Android-BaiduMap二、下载百度地图SDK点击自定义下载三、在百度平台创建应用1. 创建应用2. 获取SHA1直接执行命令会报错，原因是找不到keystore解决办法：找到自己本地的下列文件执行命令接下来的操作与官方文档一致四、遇到的问题：1.地图只有网格解
2020-05-26 00:07:16
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原创 PAT Advanced—1018 Public Bike Management (30分)
There is a public bike service in Hangzhou City which provides great convenience to the tourists from all over the world. One may rent a bike at any station and return it to any other stations in the city.The Public Bike Management Center (PBMC) keeps mon
2020-05-18 18:05:41
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原创 PAT Advanced—1024 Palindromic Number (25分)
A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a palindromic number. All single digit numbers are palindromic numbers.Non-palindromic numbers can be paired with palindromic
2020-05-09 20:56:33
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原创 PAT Advanced—1021 Deepest Root (25分)
A graph which is connected and acyclic can be considered a tree. The height of the tree depends on the selected root. Now you are supposed to find the root that results in a highest tree. Such a root is called the deepest root.Input Specification:Each in
2020-05-09 08:44:44
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原创 Android实战—SQLlite（四）
文章目录一、项目地址二、MainActivity.java三、DBHelper.java四、dao.java一、项目地址 https://gitee.com/lonelyZhe/Android-SQLite二、MainActivity.javapackage com.lonelyzhe.sqlite;import android.database.Cursor;import and...
2020-05-06 23:12:14
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原创 PAT Advanced—1031 Hello World for U (20分)
Given any string of N (≥5) characters, you are asked to form the characters into the shape of U. For example, helloworld can be printed as:h de ll rlowoThat is, the characters must be printed...
2020-05-04 20:26:32
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原创 PAT Advanced—1027 Colors in Mars (20分)
People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6-digit number, where the first 2 digits are for Red, the middle 2 dig...
2020-05-04 19:04:42
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原创 （递归）四对括号有多少种合法组合
思路： 括号匹配可以直接用栈匹配，这里使用递归，主要递归方式为首先全部左括号，任何对数括号都会有这种形式(((())))由于左括号放在最前面的方式，只有这一种排列，所以需要回退，把第四个左括号先不匹配，那么左括号就会出现在右括号后面，这时候再递归，就会产生几种新的排列((()()))((())())((()))()依次这样进行下去，直到放在最左边的左括号只有1个，这是...
2020-04-29 17:09:11
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原创 Springboot下载Odoo12的Postgresql10数据库中bytea的文件
文章目录一、BLOB和bytea二、Mybatis读取bytea字段三、Odoo12存储附件形式四、springboot读取字节流，供前端下载1. 附件类，用于在数据库中直接配制二进制文件和文件名2. Mybatis层查询附录3.service层提供下载一、BLOB和bytea 在postgresql中,存储二进制数据的类型有标准的bytea(等同于SQL中的blob)二、Mybatis读...
2020-04-28 00:54:54
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原创 PAT Advanced—1020 Tree Traversals (25分)
Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the cor...
2020-04-26 00:21:39
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原创 PAT Advanced—1023 Have Fun with Numbers (20分)
Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 246913578, which happens to be another 9-digit number con...
2020-04-24 00:26:22
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原创 PAT Advanced—1019 General Palindromic Number (20分)
A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a palindromic number. All single digit numbers are palindromic numbers...
2020-04-19 23:08:15
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原创 PAT Advanced—1017 Queueing at Bank (25分)
Suppose a bank has K windows open for service. There is a yellow line in front of the windows which devides the waiting area into two parts. All the customers have to wait in line behind the yellow li...
2020-04-19 19:12:01
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原创 PAT Advanced—1016 Phone Bills (25分)
A long-distance telephone company charges its customers by the following rules:Making a long-distance call costs a certain amount per minute, depending on the time of day when the call is made. When ...
2020-04-19 16:19:46
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原创 Android实战—Broadcast音乐盒（三）
文章目录一、项目地址二、项目效果三、Broadcast实现模式1. 广播流程图2. 为什么要使用广播实现？四、主要代码1. activity_main.xml2. MainActivaty.java3. MusicService.java4. AndroidManifest.xml五、注意1. assets和raw的区别一、项目地址 https://gitee.com/lonelyZhe/A...
2020-04-17 23:30:11
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原创 PAT Advanced—1015 Reversible Primes (20分)
A reversible prime in any number system is a prime whose “reverse” in that number system is also a prime. For example in the decimal system 73 is a reversible prime because its reverse 37 is also a pr...
2020-04-17 15:55:28
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原创 解决前端Provisional headers are shown问题
一、出现Provisional headers are shown的几种可能性跨域，请求被浏览器拦截请求被浏览器插件拦截服务器出错或者超时，没有真正的返回强缓存from disk cache或者from memory cache，此时也不会显示 这几种都是前端的问题，我们都尝试了，对我们的问题没有效果二、还是后端的锅 前端发送post请求，用的是json格式，但是没请求到后端...
2020-04-15 23:28:20
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原创 Swagger返回嵌套json数据
文章目录一、接口展示中的问题二、BaseResult工具类三、使用BaseResult1. 对应一个url该怎么返回数据2. swagger中的数据展示四、多层嵌套1. 嵌入一层列表2. 返回分页信息3. 对象里有另外的对象五、总结一、接口展示中的问题 现在大部分前后端的数据交互都是采用json格式，如我们经常用一个大的json包裹着数据发送的，但是在Swagger中，如果直接返回这个类对象...
2020-04-14 19:58:28
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原创 Springboot配制Swagger自动生成API文档
一、引入Swagger1. 添加maven依赖<!--swagger依赖--><dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.9.2&...
2020-04-11 21:37:19
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原创 PAT Advanced—1014 Waiting in Line (30分)
Suppose a bank has N windows open for service. There is a yellow line in front of the windows which devides the waiting area into two parts. The rules for the customers to wait in line are:The space ...
2020-04-10 23:47:11
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原创 Redis安装与配制—Centos7与Docker
文章目录一、本地安装及配置（一）、Centos7本地安装Redis（二）、配制redis启动模式（三）配制redis登录密码（四）使用redis desktop manager连接redis二、Docker安装及配置三、总结一、本地安装及配置（一）、Centos7本地安装Redis在官网下载redis安装包https://redis.io/小技巧：官网下载可能会很慢，此时可以用开发者...
2020-04-09 23:47:13
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2020-04-05
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