puppet rack

) was born. You understand the Dos attacks, the principle of which is very brief. If the computer and network disposal ability increased 10 times times, with an assault machine to invade can no longer play a role, the attackers use 10 of the invasion machine together to invade it? 100 units? DDoS is the use of more puppet machines to recommend the attack, more than in the early years of planning to attack the victims. The high speed and wide converge

, the principle is simple. If the computer and network processing power increased 10 times times, with a strike attack can no longer play a role, the attackers use 10 attack attacks at the same time? With 100 units? DDoS is the use of more puppet machines to launch attacks, in order to attack victims on a larger scale than before.The high-speed, widely connected network has brought convenience to everyone, and has created extremely favourable conditio

Cabling planning for the tobacco industry 2.3.1 Core layer CD, Convergence layer BD weak device planning The core CD room needs to be terminated from the aggregation room, operator access network and tobacco system in the introduction of various types of optical fiber, optical fiber core number, in the CD room should be based on the specific number of optical fiber and cabinet installation space, select suitable for the project needs of the fiber-optic fusion wiring

~ Friday, 600w/week 6th? KV Distributed Cache System Middleware (Memcached, Redis, Tair)-billion-tier data cache, 95% hit ratio? LPFS Distributed File Middleware (MongoDB)--mongodb, pictures, files? DB Database Sub-Library sub-table middleware (MySQL)-Unlimited data volume expansion? Distributed task Scheduling middleware (Schedule)--Support 100+ service, 200+/distributed task scheduling? Push Unified Messaging Push platform – Daily 100w+ push to Android, IOS, Email, SMS, Comet rely on the ope

Like Ruby Metaprogramming, puppet and chef use a lot of Ruby's language features to define a new deployment language.Share a few in the actual project used in the scene, limited capacity, if there is a better program, please leave a message to me: RPC Interface templating--using Eval, alias, Defind_method Require ' RACK/RPC ' class Server Above is an RPC server that writes a function that in

[Blog recommendations] CentOS6.6 + Puppet3.7.3 distributed deployment of Zabbix2.4 Monitoring System (1) This blog post is from the Bkjia blog redking blogger. If you have any questions, go to the blog page for an interactive discussion!Blog: http://redking.blog.51cto.com/27212/1604984 OS:CentOS-6.6-x86_64(Minimal)Puppet3.7.3Zabbix2.4Puppet/Zabbixmaster:master/zabbix.redking.comPuppet/Zabbixagent:agent1~5.redking.com Puppet Inst

Rex is an SSH-linked cluster configuration management system written in Perl that is syntactically similar to the Puppet DSL. Chinese version of the official website see http://rex.perl-china.com. This article is only an introductory document that I have written on the departmental Wiki. Common Command Parameters Rex command parameters are many, but because our environment is KRB certified, so some parameters can only be written in Rexfile. So gener

HDFs and HBase are two of the main storage file systems in Hadoop, different scenarios for which HDFS is suitable for large file storage, and hbase for a large number of small file stores. This article mainly explains how the client in the HDFs file system reads and writes data from the Hadoop cluster, and it can also be described as a block policy.BodyOneWrite DataWhen no rack information is configured, all machine Hadoop defaults to the same default

operations per second for 16-bit integer operations. For comparison purposes, Google claims that in the case of a FP16 floating-point number (TPU2), a floating-point operation of 45 trillion times per second can be achieved. TPU does not have a built-in scheduling function, nor can it be virtualized. It is a simple matrix multiplication coprocessor that is directly connected to the server board. Google's first generation of TPU card: A figure does not have a radiator; b picture has radiator Goo

Configuration Management and automation tools such as Puppet and Opscode Chef are generated for large cloud computing and Web 2.0 organizations. Google used to be a Puppet user, and Opscode also has customers such as the Evite website. I'm afraid not many enterprise IT users are as large as Google, but they also agree that configuration management tools can save their time and cost. Ed Bailey, IT architect

In this paper, a puppet load Balancing environment experiment is presented.Foreman-proxy can be four-layer or seven-layer load, can be implemented in the Foreman Web interface to add a smart-proxy, backend multiple real foreman-proxy processing purposesPersonal adoption of the Haproxy implementation of the four-layer and seven-tier agents, PM01 and pm03 are Foreman-proxy server, AG01 is the foreman server, LVS is a Load Balancer server (VIP on the LVS

a mature automated operations system should include at least three subsystems: Computer room Equipment Data System (EMDB) 1. Input computer room server and network equipment of various information, such as machine model, hard disk size, OS type, belongs to application, running state, room name, room, rack, location and so on various information, this is a most basic database, The main purpose is to give each machine from a number of dimensions of a u

Programmer's notebook Library Series 1-server and O M Time: 2014-11-3Fingerliu This is the first article in the programmer's inventory Library Series. First, let's talk about the server and O M tools. We mainly introduce the following four tools: Puppet Salt Visualops Lnmp Puppetintro Puppet is a centralized Configuration Management System for Linux and UNIX platforms. It defines status information f

build the mcollective environment first. If you do not know mcollective, it is recommended to go to my previous article to look over: http://www.cnblogs.com/waiwofei/p/3698675.html2, the building of ruby EnvironmentSince Mcomaster requirements must be more than ruby1.9, and the previous installation with Yum is ruby1.87, the latest Yum source is only 1.87, so prepare to use the source code to install the Ruby environment. Download ruby2.12 source code.tar xzvf ruby-2.1. 2. Tar . gz# cd Ruby-2.1

How to install Foreman on Ubuntu 14.04 Foreman is an integrated data center lifecycle management tool that provides service activation, configuration management, and report functions. Like Puppet Dahboard, Foreman is also a Ruby on Rails program. the difference between Foreman and Dashboard is that Foreman focuses more on Service Activation and management of data centers, such as and boot tools, PXE to start servers, DHCP server and server activation

Foreman is an integrated data center lifecycle management tool that provides service activation, configuration management, and report functions. Like PuppetDahboard, Foreman is also a RubyonRails program. the difference between Foreman and Dashboard is that Foreman focuses more on Service Activation and management of data centers, such as and boot tools, PXE to start servers, DHCP server and server activation tools are integrated. unified Foreman Machine Management Foreman is an integrated data

installed ), create a file named default in this directory and specify the System custom file *. cfg. Such a series of operations and system customization are obviously cumbersome and will only increase the workload of O M personnel! RedHat introduces KickStart and cobbler, which are used to customize and automatically deploy and install the operating system. Among them, cobbler integrates KickStart and is more powerful! Next we will learn how to install cobbler step by step! Cobbler installa

0 Basic Learning Puppet Automation configuration Management Series documentationNote: The following is an operation in a foreman1.6.3+puppet2.6.2 environment. For more configuration, please refer to official website http://theforeman.org/manuals/1.6/index.html in the Foreman-proxy 1.6.3 version, at least the following five types of tools triggering the puppet Agent command are available, the default is Pupp

[[email protected] ~]#/etc/init.d/puppetmaster startStarting puppetmaster:/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in ' gem_original_require ': no such File to load-JSON (LOADERROR)From/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in ' require 'From/usr/lib/ruby/site_ruby/1.8/puppet/module.rb:3From/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in ' Gem_original_require 'From/usr/lib/ruby/site_ruby/1.8/rubygems/c

The plane layout of data centers is usually in a rectangular structure. To ensure the cooling effect, 10 to 20 cabinets are usually placed back to back and discharged into one row to form a Cabinet group (also known as a POD ). The cabinets in the POD adopt the ventilation mode before and after, and the cold air is sucked from the front panel of the cabinet and discharged from the rear. Thus, a "hot channel" is formed between the pods placed in the back-to-back of the Cabinet ", two Adjacent pod