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 2.x版本 python3.0于2008-12-03发布 python各版本发布时间： 2.0.1 2001-06-22 3.7.0 2018-06-27 2.7.0 2010-07-03 3.8.0 2019-10-14 2.7.5 2013-05-15 2013-05-15 3.9.0 2020-10-05 2.7.18 2020-04-20 3.9.16 2022-12-06 3.0.1 2009-02-13 3.10.0 2021-10-04 3.5.0 2015-09-13 3.11.0 2022-10-24 3.6.0 2016-12-23 3.12.0 2023-10-02 3.6.8 2018-12-24 ★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 → Editor → Color Scheme → Language Defaults → 选中目 标Scheme

★第1章、安装postgresql # yum install postgresql-server -y # EL8安装光盘AppSteam里自带有10.x 版本的软件包 # postgresql-setup --initdb --unit postgresql # systemctl enable postgresql # systemctl systemctl enable postgresql-13 # systemctl start postgresql-13 ★第2章、设置数据存储路径 PostgreSQL 初始化数据库之后， 10版本的默认的数据目录是/var/lib/pgsql/ 13版本的默认的数据目录是/var/lib/pgsql/13/ 现在想修改为/data_pg/ 目录 ★PG-13版本 # systemctl data_directory = '/data_pg/data/' # mv /var/lib/pgsql/13/* /data_pg/ #将原数据目录下所有内容移动到新 数据目录下 # vi /usr/lib/systemd/system/postgresql-13.service #pg-13版本，修改systemd服 务文件，指定数据目录 #修

unix:///run/containerd/containerd.sock image-endpoint: unix:///run/containerd/containerd.sock �meout: 10 debug: false EOF ★crictl常用操作 crictl只支持pull拉取镜像及rmi删除镜像操作，不支持push及tag打标签 # crictl images READY STATUS RESTARTS AGE �gera-operator-59b69c49dc-t6crt 1/1 Running 1 (10m ago) 51m # kubectl get pods -n calico-system NAME READY Running 1 (10m ago) 11m calico-node-qn7cp 1/1 Running 1 (10m ago) 11m calico-typha-84cb54bfd-hh57t 1/1 Running 1 (10m ago) 11m csi-node-driver-fn7zd

failure modes and then testing to ensure they operate as expected iv. Great Amazon Reboot of 2014 – 10% of Amazon EC2 servers had to reboot for Xen emergency security patch. At Netflix, zero downtime, Investigation Report – studies over 85K cardholder breaches. 10 vulnerabilities accounted for 97% of the exploits used. 8 of the 10 exploits were over 10 years old. i. ENSURE SECURITY OF THE ENVIRONMENT i.

as in production v. Dev & Ops gain shared mastery of application & environment interactions 3. Ch. 10 Enable Fast and Reliable Automated Testing a. Undesired outcomes result from finding and fixes errors of effort supporting new features, 20% on detailed planning, 25% on porting code amongst branches, 10% integrating, 15% manual testing. ii. Implemented Trunk-based development & CI iii. After CI: 40% based upon new constraints, goals, and functionality iii. What works at scale 1X rarely works at scale 10X or 100X d. USE THE STRANGLER APPLICATION PATTERN TO SAFELY EVOLVE OUR ENTERPRISE ARCHITECTURE i

Cof # 当前分支指向这个提交 （commit） Date: Mon Oct 30 10:47:04 2023 +0800 msgxxx #提交的说明信息 # git /git-backup #将证书及密钥文件复制到/etc/gitlab目录下 # gitlab-ctl reconfigure #重加载配置文件（耗时较长，约5到10分钟） # gitlab-ctl restart #重新加载配置文件后需要重启gitlab # cat /etc/gitlab/ini�al_root_password

DevSecOps MVP Image from https://github.com/jondavid-black/DevOpsForDefense/raw/master/Meetup/2019/2019-10%20DO4D%20- %20DevSecOps%20Reference%20Design.pdfContainerized Software Factory Reference DesignSoftware

with hard or soft limits) 7. Health & availability 8. Startups & shutdowns 9. Faults & errors 10. Circuit breaker trips 11. Delays 12. Backup success/failure d. USE TELEMETRY TO GUIDE PROBLEM-SOLVING

compartmentalized and well-defined interfaces k. KEEP TEAM SIZES SMALL (THE “2-PIZZA TEAM” RULE) 10. Ch. 8 How to Get Great Outcomes by Integrating Operations into the daily Work of Development a