main.py # git log #查看提交记录；显示完整的hash值 commit 7b8ff6902bf14780a413a021cc1d946fd82fa82e (HEAD -> master) # commit后面为hash值，HEAD表示 Author: Cof branch -v #查看所有分支的最新的提交 # git branch -D xxxxx #强制删除分支（不能删除当前所处的分支） # git branch -d xxxxx #删除空的分支，删除已被合并的分支 # git merge yyy #将指定的tag推送到远程仓库，先参考下一节 进行远程仓库的映射 # git push rmtRepo --tags #推送所有tag到远程仓库 # git tag -d v1.0.1 #删除指定的tag # git push rmtRepo --delete v1.2 #删除远程tag

python3学习手册 简介： Python官网： h�ps://www.python.org Python由Guido van Rossum于1989年底发明，于1991年发行第一版， Python源代码遵循GPL协议 Python是一种解释型、面向对象、动态数据类型、可交互的语言 python2.0于2000-10-16发布，于2020年1月1日停止更新2.x版本， Python-2.7成为最后一个py >>> #这里可执行python代码，类似shell脚本 >>> print("hello") >>> exit() #退出交互模式 ②执行一次性代码 # python3 -c "要执行的代码，多个语句之间用;分号隔开" ③执行脚本 # vi test.py h�ps://www.jetbrains.com/pycharm/download/ ★PyCharm快捷键 Alt + Shi� 列选择模式，可同时选择多列 Ctrl + Alt + L 重新格式化代码，Reformat Code Ctrl + B 跳转到鼠标指定的函数定义处 Shi� + F10 运行程序 Ctrl + R 查找替换 ★设置字体颜色 File → Se�ngs →

#设置时区 # systemctl restart chronyd # chronyc sources -v ⑦设置网络参数 #首先加载模块 # cat > /etc/modules-load.d/br_ne�ilter.conf < /etc/modules-load.d/k8s-ipvs.conf <d # docker info ★docker会修改防火墙规则，导致pod网络不通 # vi /usr/lib/systemd/system/docker.service #在[Servi

Myth—DevOps is Only for Startups: b. Myth—DevOps Replaces Agile c. Myth—DevOps is incompatible with ITIL d. Myth—DevOps is Incompatible with Information Security and Compliance: e. Myth—DevOps Means Eliminating follows this progression: a. Environment creation: b. Code deployment: c. Test setup and run: d. Overly tight architecture: iv. ELIMINATE HARDSHIPS AND WASTE IN THE VALUE STREAM 1. In the book Implementing work: b. Extra processes: c. Extra features: d. Task switching: e. Waiting: f. Motion: g. Defects: h. Nonstandard or manual work:i. Heroics: d. The Second Way: The Principles of Feedback 27

I took that action?” 5. Brainstorm on real, implementable countermeasures – not Be more Careful d. PUBLISH OUR POST-MORTEMS AS WIDELY AS POSSIBLE i. After the meeting, widely publish the minutes, artifacts every day every exercise and new piece of information is evaluated and debated; more similar to R&D lab. f. REDEFINE FAILURE AND ENCOURAGE CALCULATED RISK-TAKING i. Leaders reinforce the culture through Single repository with over 1B files and over 2B SLOC, over 25K engineers for every Google property d. SPREAD KNOWLEDGE BY USING AUTOMATED TESTS AS DOCUMENTATION AND COMMUNITIES OF PRACTICE i. Ensure

version control by Ops was the highest predictor of both IT performance & organizational performance d. MAKE INFRASTRUCTURE EASIER TO REBUILD THAN TO REPAIR i. Quickly building enables quickly re-creating – lose the ability to learn from mistakes and diminish integrating that learning into future work d. Google Web Server (GWS) team was struggling with changes – Hard line: no changes would be accepted potential rework and merge problems 1. Cross-cutting dependency improvements often provide high-payoffs d. ADOPT TRUNK-BASED DEVELOPMENT PRACTICES i. CI and Trunk-based development (TBD) are countermeasures

#提示符=>前的postgres表示当前数据库名 # psql -h x.x.x.x -p 5432 -U cof -d db_test #使用cof用户登录pg，连接 db_test这个库 db_test=> #提示符 1.122 -p 5432 -U postgres #连接pg数据库， # -h指定地址，-p指定端口号，-U指定用户（默认为当前shell用户名），-W指定 用户密码， # -d指定数据库，默认连接的数据库名同用户名 Password for user postgres: #输入密码 psql (13.13) Type "help" create table tablexx (name VARCHAR(32), age INT, class INT); #创建名 为tablexx的表，3个字段 db_test=# \d tablexx; #查看表结构 Table "public

Startups & shutdowns 9. Faults & errors 10. Circuit breaker trips 11. Delays 12. Backup success/failure d. USE TELEMETRY TO GUIDE PROBLEM-SOLVING i. Don’t practice “Mean Time until Declared Innocent” – culture probably a better way to do this.” Unfortunately, there wasn’t a better way to do that operation.” d. HAVE DEVELOPERS INITIALLY SELF-MANAGE THEIR PRODUCTION SERVICE i. Google has development groups self-manage add features to the baseline that also increase maintenance costs and identify opportunity costs. d. INTEGRATE A/B TESTING INTO OUR RELEASE i. A/B testing requires fast CD to support ii. Use feature

bad behavior?” I truly doubt that any of the Beltway bandits sees themselves as bad people, and I’d bet that most are truly well-meaning. It’s the system that has failed them, and us. But how do we change and accountability? You know the answer: Scrum. Let’s start a few thousand miles west of Washington, D.C., in the Washington state capital, Olympia. There, the past two administrations—first a Republican goals. This is what people should expect from their government. The very fact that they sound clichéd is an indicator of their importance. A cliché, after all, is just a truth repeated enough times to

• No conversations • No meetings • No eating • No preening How does it work? 1. Choose a task you’d like to get done 2. Set the Pomodoro for 25 minutes 3. Work on the task until the Pomodoro rings Personal Productivity Using The Pomodoro Technique, Daniel Hinojosa, https://docs.google.com/presentation/d/1ufjcILARuowbv3Y9r-FP9-x3kmlIzq7bvOJBxRVh3-w/ present#slide=id.i0 [3] Flow: The Psychology of Optimal