of work b. Agile, Continuous Delivery, and the Three Ways 7 c. The First Way: The Principles of Flow 15 i. MAKE OUR WORK VISIBLE 1. A significant difference between technology and manufacturing value invisible. Unlike physical processes, in the technology value stream we cannot easily see where flow is being impeded or when work is piling up in front of constrained work centers. 2. By putting to creating smooth and fast flow is performing work in small batch sizes. 2. Large batch sizes result in skyrocketing levels of WIP and high levels of variability in flow that cascade through the entire

manufacturing plant work than he ever imagined. With the clock ticking, Bill must organize work flow streamline interdepartmental communications, and effectively serve the other business functions at centers, never allowing local optimization to create global degradation, always seeking to increase flow, and always seeking to achieve profound understanding of the system (as per Deming). The Second Way “What can displace planned work? Unplanned work. That’s why Erik called it the most destructive type of work. It’s not really work at all, like the others. The others are what you planned on doing,

tedious 2. Tends towards increasing batch sizes ii. Fully integrate testing into daily work – enable flow, more automated testing h. ENABLE PAIR PROGRAMMING TO IMPROVE ALL OUR CHANGES i. Pair Programming you have someone review your change? Do you know who the best person to ask is for changes of this type? Did you do everything you absolutely could to assure yourself that this change operates in production

Pomodoro is a technique for increasing productivity and focus by getting yourself into a state a Flow. Basic requirements ① A kitchen timer ② A short to-do list [2] ③ A little discipline [2] • Turn timetable according to your to-dos, to your time, or even to the seasonWhy does this work? (Theory) Flow: The Psychology of Optimal Experience by Mihaly Csikszentmihalyi [3] From Amazon.com Psychologist revealed that what makes an experience genuinely satisfying is a state of consciousness called flow. During flow, people typically experience deep enjoyment, creativity, and a total involvement with life

The DevOps Handbook – Part 3 The First Way – The Technical Practices of Flow 1. Introduction a. Goal – Enable & sustain fast flow of work by implementing continuous delivery i. Create the foundation of commits 2. Runs of automated tests of the integrated system as a whole 3. Work towards single-piece flow iii. Trunk & state of Deployment Pipeline represents & communicates the current state of the system organizations where Development deployed code and those where Operations deployed code v. Enable fast flow through common promotion process anyone can run without manual steps and handoffs f. INTEGRATE CODE

use e. DESIGN FOR OPERATIONS THROUGH CODIFIED NON-FUNCTIONAL REQUIREMENTS i. Designing for fast flow, deployability, and operations will derive NFRs. Codify these into the tests and pipeline f. BUILD

io/v1beta2 cer�ficatesDir: /etc/kubernetes/pki clusterName: kubernetes controllerManager: {} dns: type: CoreDNS etcd: local: dataDir: /var/lib/etcd imageRepository: cof-lee.com:5443/k8s kind: ClusterConfigura�on /etc/kubernetes/pki clusterName: kubernetes controlPlaneEndpoint: "10.99.1.54:6443" controllerManager: {} dns: type: CoreDNS etcd: local: dataDir: /var/lib/etcd imageRepository: cof-lee.com:5443/k8s kind: ClusterConfigura�on port/servce port转发到此node上的pod里） ExternalName 将服务映射到集群外部的某个资源，要求v1.7及以上版本 例： kind: Service spec: type: NodePort ports: - port: 443 # service ip 的port targetPort: 8443

Appearance → 选 中 Show whitespaces ★不进行拼写检查 File → Se�ngs → Editor → Inspec�ons → Proofreading → Type 取消勾选 ★设置项目的python解释器 File → Se�ngs → Project: xxx →Python Interpreter → 右 侧 选 择 目 标 python解释器 #a和b中不同时存在的元素 ★判断变量类型 type(x) #返回x的类型，如 isinstance(x, int) #返回True或False type()不会 认为子类是父类的一种类型 isinstance(x,int)会认为子类是父类的一种类型 ★类型转换 map(type, listxx) 将字符串str型list转为int型list # 类型为 str 长度 3 bytesxx = strxx.encode("utf8") # 将str编码为utf8，返回类 型bytes，长度 7 print(type(bytesxx[0])) #返回int, bytesxx本身为bytes 类型，其元素则为 int ★string的元素仍为str stryy=bytesxx.decode("utf8")

为 pg_catalg 的 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' # -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" for help. postgres=# #提示符#前的postgres表示当前数据库名 postgres=# #查看表结构 Table "public.tablexx" Column | Type | Colla�on | Nullable | Default --------+-----------------------+-----------+----------+---------

/etc/systemd/system/redis.service <Type=forking ExecStart=/usr/local/bin/redis-server /root/redis-6.2.13/redis.conf PrivateTmp=true [Install]