decision-making processes, by creating options and grooming enterprise capabilities so that they will be responsive to change, and by demonstrating the value of information, IT can lead the organization in learning

/iptables -P FORWARD ACCEPT # systemctl daemon-reload # systemctl restart docker ★默认还加了DOCKER-USER这个forward链，默认全部return，导致不通，也得 放开，具体得看下iptables规则），以下操作目的为 在系统启动后等待60秒待 k8s把iptables规则设置完毕再在以下几个chain里放通所有流量，如果对防火墙 sleep 60 /usr/sbin/iptables -I DOCKER 1 -s 0.0.0.0/0 -j ACCEPT /usr/sbin/iptables -I DOCKER-USER 1 -s 0.0.0.0/0 -j ACCEPT /usr/sbin/iptables -I DOCKER-ISOLATION-STAGE-1 1 -s 0.0.0.0/0 -j show #查看网桥（虚拟交换机） bridge name bridge id STP enabled interfaces cni0 8000.9e3551d62fed no veth57d7a776 docker0 8000.0242f0503f0d

shared infrastructure – shared databases iv. Bounded context – 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

ARCHITECTURE THAT ENABLES PRODUCTIVITY, TESTABILITY, AND SAFETY i. Loosely-coupled ii. Well-defined interfaces that enforce how modules connect with each other c. ARCHITECTURAL ARCHETYPES: MONOLITHS VS. MICROSERVICES

schema 下 的 pg_hba_file_rules表里： INSERT INTO "pg_hba_file_rules" ("line_number", "type", "database", "user_name", "address", "netmask", "auth_method", "options", "error") VALUES (94, 'host', '{all}', '{all}' #初次登录需要切换为postgres用户，直接登录，无 需密码 postgres=# alter user postgres with password 'passwdxxyy'; #修改管理员账号 postgres的密码 postgres=# postgres=# create user cof with password 'passwdxxyy2'; #创建一个名为cof的 库的所有权限 postgres=# postgres=# revoke all on database db_test from cof; #撤销用户权限 postgres=# drop user xxx; #删除用户 postgres=# exit;

息，不用于身份验证 #全局设置信息保存在 ~/.gitconfig 文件里 # git config --global user.name cof #设置用户名 # git config --global user.email cof@cof-lee.com #设置邮箱 # git config --global #初始化仓库，将在当前路径下生成.git子目录，子目录里有 此git仓库的相关信息 # git config --local user.name cof #设置用户名 # git config --local user.email cof@cof-lee.com #设置邮箱 # git config --local h�p.sslVerify #查看本地设置 ★系统设置 系统设置信息保存在/etc/gitconfig文件里 # git config --system user.name cof # git config --system user.email cof@cof-lee.com # git config --system --list

有时我们使用shi�切换输入法，若不小心按的次数多了（按2次shi� 键），结果就弹出全局搜索框，不太友好，可以关闭此功能 File → Se�ngs → Advanced Se�ngs → 右 侧 的 User Interface ， 勾 选 Disable double modifier key shortcuts ★设置每行最大长度 File → Se�ngs → Editor → Code 禁用javascript chrome_options.add_argument('--disable-javascript') # 设置UserAgent user_agent = ["--user-agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64)", "AppleWebKit/537.36 (KHTML "Chrome/120.0.0.0", "Safari/537.36"] chrome_options.add_argument(" ".join(user_agent)) # 创建一个浏览器驱动 driver = webdriver.Chrome(options=chrome_options) driver.maximize_window()

of buying off the shelf.  The risk of developing a system incrementally and altering it based on user feedback is often lower than that of buying a finished product that is hard to change.  The advantages product that does not fit our business and customize it until it does.  We offer our business users a user interface that is clunky because it was designed for users in the abstract across many possible companies get feedback, and then adjust what they have produced. As a result, the code can be developed in a user-centric way and match the enterprise’s needs precisely. Risk is low, because the team is constantly

must maintain a big picture, long-term view and focus on the next six-month release.  DO epics and user stories to concisely define the desired system functions and provide the foundation for Agile estimation estimation and planning. o They describe what the users want to accomplish with the resulting system. User stories help ensure that users, acquirers, developers, testers, and other stakeholders have a clear is established to help estimate the level of work for each requirement (i.e., as translated into user stories)

the-heck-do-you-start  The myth of the single metric  Four roles (CEO, Operations, Developer, User)  Sunburst chart how do visitors move through my siteLinux Performance Tools by Brendan Gregg (Netflix) process, entropy  Actively discourage email: it is exclusive Where there any key themes?  Real User Monitoring: more valuable than any other metric  Web Performance: 2 seconds is the magic number