devops pdf

Some time ago, in order to parse PDFs, it took a lot of time to learn PDFBox and Itext, both of which are open source libraries for working with PDFs, both Java and C #. As a new beginning to learn these two open source Library, the feeling of the resources on Baidu is still too little. I do is a PDF processing, in Baidu for a long time did not find the answer, and finally to Itext's official website and stack overflow found the answer. The last compa

Brief introduction:Research and development operation and maintenance integrationRelated information:11 things you need to know about DevOpsThe DevOps in my eyesDevOps PortalDocker for dotnet SeriesDocker4dotnet #1 past life World HelloDocker4dotnet #2 containerized HostDocker4dotnet #3 Developing ASP. NET core and MySQL applications using visual Studio code and Docker on MacOSDocker4dotnet #4 build High-speed Docker registry with Azure cloud storage

DevOps Environment from zero (i)The previous article said that Jenkins had been installed, installing pipeline and Blue-ocean (NICE) plug-ins.Switch to Blue-ocean style, create a pipeline, online a lot of GitHub's integration way, use git here. Save the public key on the GIT server. Fill in the Git repository address (about Git build can refer to another article), create aHere is a pit, create a good pipeline, save, will be generated jenkinsfile to th

DevOps means no ops!Just to engage in the network, you may be very good, and get a good salary, however, 5 years after the ~, when a person through a simple study can be a web interface or a dedicated tool can be a complex network, so while doing well in the network, in the familiar development, This can alleviate a lot of simple repetitive operation (from the last IDC core cut to see that the configuration is all manual brush!) ）。 But the premise is

(*[1,2,3,4]) ... Delete: G1 = models. Girl.objects.get (id=1) g1.b.clear () # Clears all data associated with Girl id=1 G1.b.remove (2) g1.b.remove (*[1,2]) query: G1 = models. Girl.objects.get (id=1) # Sqlg1.b.all () # Sqlg1.b.filter (). Count () B1 = models. Boy.objects.get (id=1) B1.girl_set.all () models. Girl.objects.all (). VALUES (' id ', ' name ', ' B__username ') models. Boy.objecTs.all (). VALUES (' id ', ' username ', ' girl__name ') Update: Orm:python operation database module: Mysq

type-to-subtype relationship between classesCharacteristics:(1) In inheritance, the construction of a base class is not automatically called, it needs to be called specifically in the construction of its derived class.(2) when calling a method of a base class, you need to prefix the class name of the base class with the Self argument variable, except that you do not need to take the self argument when calling a normal function in a class(3) Python always looks for a method of the corresponding

, the environment is basically deployed, the dual WebSocket client connected to the WebSocket serverThe above script Specifies the R_log = "/tmp/web_socket.log" Log path, we need to generate this log file, and continue to write to the log in order to display the effect in the browser in real time (real scene, you can specify a server log, such as Apache, Nginx logs, etc.)We write a Python code on the B server and write to R_log = "/tmp/web_socket.log" Log every second:The Python code is as follo

(r) print (' =================== ') #输出为9, the example above is equivalent to the following code Li = []for i in range] (Ten): def F1 (): return i li.append (F1)#li as a list, the inner element is the function of the same functionPrint (Li[0] ()) print (Li[1] ()) print (Li[2] ()) print (Li[3] ()) #输出: # 9# ===================# 9# 9# 9# 9Since the function is not executed when it is invoked, when the loop ends I is 9 and the last call is 9The above function can be printed with a sli

Python built-in functions in detail python built-in function diagram you can also access (there are various examples): Https://docs.python.org/3/library/functions.html#nextThe following examples illustrate the use of various functionsThe big day after the update, roll up the sleeves refueling dry!!!First, the Python common data structureDirectory: Normal list structure Use a list as a stack Use a list as a queue List-derived Nested list parsing Use of the DEL statement Tu

Tutorials DirectoryA: Python basics (a little, the basics is to read and learn it yourself)II: Bottle FoundationIntroduction to the Python Bottle web frameworkPython Bottle Framework Environment installationPython Bottle Framework Basics Tutorial: Routing (URL definition)Python Bottle Framework Basics Tutorial: HTTP Request methodPython Bottle Framework Basics Tutorial: Template usagePython Bottle Framework Basics Tutorial: Template syntaxPython Bottle Framework Basics Tutorial: Template inherit

Objective With the system growing, developers, sites, servers more and more, micro-service propulsion, ... And so on, it's increasingly necessary to automate devops.The real reason, of course, is that these problems were foreseen at the start of the team, so it's up to you to automate from the beginning.The tangible benefits are also obvious, savings in human costs, standardized processes, traceable release histories, free hands (repetitive labor), avoidance of errors caused by human actions, an

Message Acquisition5, publish the subscription6. Send keyword7. Fuzzy MatchingPymysql ModulePymsql is the module that operates MySQL in Python, and is used almost the same way as in MySQLdb (PY2).Sqlachemy ModuleQlalchemy is an ORM framework in the Python programming language that builds on database APIs and uses relational object mappings for database operations, in short: converting objects to SQL and then executing SQL using the data API and getting execution results.Paramiko ModuleThe Param

Digital innovation Economy What is the relationship between cloud computing and DevOps: is DevOps really just "it for the cloud"? Can only execute devops in the cloud? Can only run the cloud through DevOps? The answer to these three questions is in the negative. The cloud and DevO