英语作文模板

发表于 2023-03-28 更新于 2023-03-31 分类于学习 Waline：本文字数： 2.7k 阅读时长 ≈ 2 分钟

英语作文模板

答题性议论文

Currently,there is a widespread concern over(the issue that)作文题目.It is really an important concern to every one of us.As a result,we must spare no efforts to take some measures to solve this problem.

As we know that there are many steps which can be taken to undo this problem.First of all,途径一.In addition,another way contributing to success of the solving problem is 途径二.

Above all,to solve the problem of 作文题目,we should find a number of various ways.But as far as I am concerned,I would prefer to solve the problem in this way,that is to say,方法.

利弊型的议论文

Nowadays,there is a widespread concern over(the issue that)作文题目.In fact,there are both advantages and disadvantages in 题目议题.Generally speaking,it is widely believed there are several positive aspects as follows.Firstly,优点一.And secondly 优点二.

Just As a popular saying goes,”every coin has two sides”,讨论议题 is no exception,and in another word,it still has negative aspects.To begin with,缺点一.In addition,缺点二.

To sum up,we should try to bring the advantages of 讨论议题 into full play,and reduce the disadvantages to the minimum at the same.In that case,we will definitely make a better use of the 讨论议题.

议论文的框架

不同观点列举型（选择型）

There is a widespread concern over the issue that 作文题目.But it is well known that the opinion concerning this hot topic varies from person to person.A majority of people think that 观点一.In their views there are two factors contributing to this attitude as follows: in the first place,原因一.Furthermore,in the second place,原因二.So it goes without saying that 观点三.

People,however,differ in their opinions on this matter.Some people hold the idea that 观点二.In their point of view,on the one hand，原因一.On the other hand,原因二.Therefore,there is no doubt that 观点三.

As far as I am concerned,I firmly support the view that 观点一或二.It is not only because原因一 ,but also because原因二 .The more we are aware of the significance of ＿＿＿＿,the more benefits we will get in our daily study and job.

谚语警句性议论文

It is well known to us that the proverb: “谚语“has a profound significance and value not only in our job but also in our study.It means＿＿谚语的含义＿＿.The saying can be illustrated through a series of examples as follows.(also theoretically)

A case in point is 例子一.Therefore,it is goes without saying that it is of great of importance to practice the proverb 谚语.

With the rapid development of science and technology in China,an increasing number of people come to realize that it is also of practical use to stick to the saying: 谚语.The more we are aware of the significance of this famous saying,the more benefits we will get in our daily study and job.

问题解决型作文模板

With the＿＿＿＿of＿＿＿＿，So it is of great importance for us to＿＿＿＿.On the one hand＿＿＿＿,On the other hand＿＿＿＿,

However,we have figured out many ways to＿＿＿＿＿．Firstly,＿＿＿＿So long as＿＿＿＿.Secondly＿＿＿＿,Thirdly＿＿＿＿．In fact＿＿＿＿,That is because＿＿＿＿.

In a word,＿＿＿＿＿＿＿＿．

现象说明文

Recently＿＿＿＿ ,what amazes us most is＿＿＿＿,it is ture that＿＿＿＿.

There are many reasons explaining＿＿＿＿.The main reason is＿＿＿＿.

what is more＿＿＿＿.thirdly＿＿＿＿.As a result＿＿＿＿.

Considering all there,＿＿＿＿.For one thing＿＿＿＿,for another＿＿＿＿

In Conclusion＿＿＿＿.　　一种事物或现象（负面意义倾向）

Grafana + Prometheus + node_exporter性能监控

发表于 2023-03-25 分类于工具 Waline：本文字数： 4.9k 阅读时长 ≈ 4 分钟

Grafana + Prometheus + node_exporter性能监控

一、背景

在用Jmeter执行性能测试时，为了更好得收集压测数据，并展示性能测试结果数据，需要搭建一套监控平台。有了平台后测试人员可以随时通过查看性能压测数据，对比历史数据，分析性能优化结果。

二、服务准备

1、MySQL用户授权

需要对用户进行授权才能收集监控数据信息

首先，登录mysql服务，这里以docker为例

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docker exec -it mysqlserver sh

mysql -uroot -p

然后，创建用户并开启远程登录。

highlighter- n1ql

1 2	#CREATE USER '你的账号'@'%' IDENTIFIED BY '你的密码'; CREATE USER 'exporter'@'%' IDENTIFIED BY '123123123';

然后，授予查看主从运行、线程，及所有数据库的权限

highlighter- lasso

1 2	#GRANT PROCESS, REPLICATION CLIENT ON 库名.* TO '你的账号'@'%'; GRANT PROCESS, REPLICATION CLIENT ON . TO 'exporter'@'%';

然后，授予监控MySQL server运行过程中的资源消耗、资源权限

highlighter- lasso

1 2	#GRANT SELECT ON performance_schema.* TO '你的账号'@'%'; GRANT SELECT ON performance_schema.* TO 'exporter'@'%';

最后，更新用户权限后，刷新权限表

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flush privileges;

2、部署服务

docker-compose.yml

version: '2'

networks:
    monitor:
        driver: bridge

services:
    prometheus:
        image: prom/prometheus:latest
        container_name: prometheus
        hostname: prometheus
        restart: always
        volumes:
            - ./prometheus.yml:/etc/prometheus/prometheus.yml
        ports:
            - "9090:9090"
        networks:
            - monitor

    grafana:
        image: grafana/grafana:latest
        container_name: grafana
        hostname: grafana
        restart: always
        ports:
            - "3000:3000"
        networks:
            - monitor

    node-exporter:
        image: quay.io/prometheus/node-exporter:latest
        container_name: node-exporter
        hostname: node-exporter
        restart: always
        ports:
            - "9100:9100"
        networks:
            - monitor

    cadvisor:
        image: google/cadvisor:latest
        container_name: cadvisor
        hostname: cadvisor
        restart: always
        volumes:
            - /:/rootfs:ro
            - /var/run:/var/run:rw
            - /sys:/sys:ro
            - /var/lib/docker/:/var/lib/docker:ro
        ports:
            - "8899:8080"
        networks:
            - monitor

    redis-exporter:
        image: oliver006/redis_exporter
        container_name: redis-exporter
        hostname: redis-exporter
        restart: always
        ports:
            - "9121:9121"
        command:
            - "--redis.addr=redis://127.0.0.1:6379"
        networks:
            - monitor

    mysql_exporter:
        image: prom/mysqld-exporter
        container_name: mysql-exporter
        hostname: mysql-exporter
        restart: always
        ports:
            - "9104:9104"
        environment:
            DATA_SOURCE_NAME: 'exporter:123123123@(127.0.0.1:3306)'
        networks:
            - monitor

在docker-compose.yml当前目录下，创建prometheus.yml文件，它将prometheus与exporter服务关联起来。

prometheus.yml

# Prometheus全局配置项
global:
  scrape_interval: 15s # 设定抓取数据的周期，默认为1min
  evaluation_interval: 15s # 设定更新rules文件的周期，默认为1min
  scrape_timeout: 15s # 设定抓取数据的超时时间，默认为10s


# scape配置
scrape_configs:
  # job_name默认写入timeseries的labels中，可以用于查询使用
  - job_name: 'prometheus'
    scrape_interval: 15s # 抓取周期，默认采用global配置
    static_configs:
    - targets: ['192.168.50.218:9090'] # prometheus所要抓取数据的地址，即instance实例项

  - job_name: 'node'
    scrape_interval: 8s
    static_configs:
     - targets: ['192.168.50.218:9100']
       labels:
         instance: node

  - job_name: 'cadvisor'
    static_configs:
     - targets: ['192.168.50.218:8899']
     labels:
         instance: cadvisor

  - job_name: 'redis_exporter'
    static_configs:
      - targets: [ '192.168.50.218:9121' ]
        labels:
          instance: redis

  - job_name: 'mysql_exporter'
    static_configs:
      - targets: [ '192.168.50.218:9104' ]
        labels:
          instance: mysql

在docker-compose.yml以及prometheus.yml文件都准备好后，在当前目录下创建一个run.sh的脚本，方便快速启动服务，不用这个脚本，用脚本中的命令也可以。

run.sh

#!/usr/bin/env bash
docker-compose down
docker-compose rm
docker-compose up -d --build

全部启动后

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cd ~/data/prometheus

docker-compose ps

启动成功，后就可以访问：

http://192.168.50.218:9090 :prometheus的原生web-ui
http://192.168.50.218:3000 :Grafana开源的监控可视化组件页面，默认用户及密码为admin
http://192.168.50.218:9100 :收集服务器（node-exporter）的metrics
http://192.168.50.218:8899 :收集docker（cadvisor）的metrics
http://192.168.50.218:9100 :收集redis（redis-exporter）的metrics
http://192.168.50.218:9104 :收集mysql（mysql-exporter）的metrics

打开 http://192.168.50.218:9090/targets ，如果State都是UP即代表Prometheus工作正常，如下图所示：

三、服务配置

1、配置数据源

首先，服务启动后，要让prometheus的数据能被Grafana访问，那么就需要打开Grafana页面（http://192.168.50.218:3000 ），默认用户及密码均为admin，并在Grafana页面中配置prometheus的数据来源。

配置好数据源后，就可以配置对应监控模板。

2、配置服务器监控

本次要导入的模板：https://grafana.com/grafana/dashboards/11074，模板ID：11074

开Grafana页面（http://192.168.50.218:3000 ），然后选择import导入模板

然后，填写模板的名称（名称随意取），接着，选择数据源为prometheus

最后，点击import导入模板，结果如图：

可以看到node-exporter把获取的数据信息，展示在了Grafana页面。

3、配置容器监控

本次要导入的模板：https://grafana.com/grafana/dashboards/893，模板ID：893

开Grafana页面（http://192.168.50.218:3000 ），然后选择import导入模板

然后，填写模板的名称（名称随意取），接着，选择数据源为prometheus

最后，就可以看到，收集docker（cadvisor）的metrics信息，并展示在grafana页面。

4、配置redis监控

本次要导入的模板：https://grafana.com/grafana/dashboards/11835，模板ID：11835

开Grafana页面（http://192.168.50.218:3000 ），然后选择import导入模板

5、配置mysql监控

本次要导入的模板：https://grafana.com/grafana/dashboards/7362，模板ID：7362

四、参考

1、docker-compose 搭建 Prometheus+Grafana监控系统 :https://www.cnblogs.com/qdhxhz/p/16325893.html

2、jmeter压测练习：https://github.com/princeqjzh/iJmeter

3、dbeaver下载：https://dbeaver.io/download/

4、mysql监控：https://www.prometheus.wang/exporter/use-promethues-monitor-mysql.html

ppt技巧

发表于 2023-03-24 分类于学习 Waline：本文字数： 102 阅读时长 ≈ 1 分钟

ppt技巧

图片拼接效果

插入大矩形形状->插入长条矩形->多选大矩形和长条矩形->形状格式工具栏->合并形状->拆分->删掉多余图形部分->在各个分割图形上插入图片

photoshop技巧

发表于 2023-03-22 分类于技术 Waline：本文字数： 56 阅读时长 ≈ 1 分钟

photoshop技巧

选区更换颜色

选区->编辑->填充->颜色->选择颜色->确定

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