DNS in the Cloud
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This document discusses DNS services in the cloud, comparing Route53 and Dynect. It provides an overview of DNS concepts like primary and secondary servers, caching, and forwarding. It also covers features for traffic management with DNS like health checks, round robin, weighted round robin, active failover, and latency-based routing. The document demonstrates an active failover configuration with Route53.
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2. It provides an overview of how to register and transfer domains to Route 53 using the AWS CLI and route53domains commands.
3. It also covers how to update domain contacts, nameservers, and enable auto-renew when using Route 53.
Introduction to puppet
This document provides an introduction to Puppet, an open source tool for configuration management. It discusses how Puppet addresses issues with manual configuration and scripting approaches by allowing infrastructure to be coded and version controlled. Puppet uses a master-agent model or can run in standalone mode, and components like Facter, the Puppet language, resources, manifests, classes and templates are explained. Resources are the building blocks for modeling system configurations, and manifests are Puppet programs. Classes describe parts of a system's identity. Templates allow dynamic configuration files. A catalog brings all components together, and learning resources are provided.
TextMining with R
Goal: Demonstrate popular practices when mining big dissimilar texts
Object of mining: texts from site: http://blogs.korrespondent.net
Tool: R
Vagrant와 chef로 개발서버 구축 자동화하기
제10회 개발자를 위한 ‘共感(공감)’ 세미나 - Session 5 Vagrant와 Chef로 개발서버 구축 자동화하기의 장표입니다.
규모가 있는 자바 웹 프로젝트는 대부분 개발, 테스트, 이관, 운영 등 n개의 서버로 배포/관리가 된다.
테스트, 이관, 운영과 같은 서버는 별도의 서버가 마련되어 구축되지만 개발서버는 일반적으로 개발자 자신의 PC에 구축해서 진행하는 경우가 많다. 이러다보니 개발자별로 조금씩 미묘하게 다른 서버 환경이 자신의 PC에서는 잘 되는 기능이 다른 서버에 배포되면 구동되지 않는 경우도 많고, 프로젝트에 참여하는 개발자들이 개발서버를 구축하기 위해서 들이는 비용도 만만치 많이 들어간다.
Vagrant와 Chef라는 도구를 사용하면 개발자들이 자신의 PC에 개발서버를 구축하고 관리하는데 들어가는 비용을 획기적으로 줄일 수 있다.
예제에 보여준 동영상 : http://youtu.be/W28iX5WFRXU
예제에 사용된 소스 : https://gist.github.com/4366784
AWS Webcast - High Availability with Route 53 DNS Failover
This webinar will be discussing how to use DNS Failover to a range of high-availability architectures, from a simple backup website to advanced multi-region architectures.
NGINX High-performance Caching
Content caching is one of the most effective ways to dramatically improve the performance of a web site. In this webinar, we’ll deep-dive into NGINX’s caching abilities and investigate the architecture used, debugging techniques and advanced configuration. By the end of the webinar, you’ll be well equipped to configure NGINX to cache content exactly as you need.
View full webinar on demand at http://nginx.com/resources/webinars/content-caching-nginx/
도커 무작정 따라하기: 도커가 처음인 사람도 60분이면 웹 서버를 올릴 수 있습니다!
도커 무작정 따라하기
- 도커가 처음인 사람도 60분이면 웹 서버를 올릴 수 있습니다!
도커의 기본 개념부터 설치와 사용 방법까지 설명합니다.
더 자세한 내용은 가장 빨리 만나는 도커(Docker)를 참조해주세요~
http://www.pyrasis.com/private/2014/11/30/publish-docker-for-the-really-impatient-book
Amazon Route 53 - Webinar Presentation 9.16.2015
Amazon Route 53 is a highly available, scalable, and easy to use cloud Domain Name System (DNS) web service. With an SLA of 100% availability, Route 53 is designed to give developers and businesses an extremely reliable and cost effective way to route end users to Internet applications. By using Route 53 as your DNS provider, you can ensure your application’s up-time, run architecture that delivers better performance, and provide your end users with a better experience through lower latency and faster load times, all at the fraction of the cost of other DNS providers. Learning Objective: In this webinar, you will learn the following: - General overview of DNS, and how Route 53 is built to provide reliable and secure DNS - Using the Route 53 console to manage your DNS, easily and seamlessly - Utilizing health checks and failover to ensure high availability - Configuring advanced routing policies, including running your application in multiple regions with LBR and Geo for better performance for your end users. - Saving costs by using Route 53 - Registering or transferring your domains into Route 53 to manage all of your domain resources from one place - How to start using Route 53, including migrating your DNS without experiencing any downtime.
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AWS Webcast - High Availability with Route 53 DNS Failover
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Tools kali
Urlcrazy is a tool that generates and tests URLs to discover hidden or missing pages on a target website. It takes a seed URL or domain as input and recursively expands it to find additional subdomains and paths. Some key features include discovering directories, files, subdomains, and URLs with modified parameters through techniques like directory bruteforcing, file extension guessing, and parameter tampering.
MYSQL
MySQL Cluster Carrier Grade Edition is a real-time database designed for the telecom industry that provides the flexibility of a relational database with the cost savings of open source. It is suited for large carriers and operators and uses a distributed, synchronous storage architecture with automated failover capability. It offers high performance, scalability and availability across geographies through asynchronous data replication between clusters.
Data correlation using PySpark and HDFS
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BIND DNS IPWorks Introduction To Advanced
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Building Linux IPv6 DNS Server (Complete Presentation)
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Gluster for sysadmins
GlusterFS is a POSIX-compliant distributed file system that aggregates various storage bricks across commodity servers into a single global namespace. It has no single point of failure or performance bottleneck. Red Hat Storage is an enterprise implementation of GlusterFS. It uses a elastic hashing algorithm to distribute files across bricks without a centralized metadata server. Various translators and volumes types provide features like replication, distribution, striping, and geo-replication. Administration involves adding peers, creating and managing distributed volumes, and manipulating bricks.
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DNS - Domain Name System
Overview of the Domain Name System (DNS).
In the early days of the Internet, hosts had a fixed IP address.
Reaching a host required to know its numeric IP address.
With the growing number of hosts this scheme became quickly awkward and difficult to use.
DNS was introduced to give hosts human readable names that would be translated into a numeric IP addresses on the fly when a requesting host tried to reach another host.
To facilitate a distributed administration of the domain names, a hierarchic scheme was introduced where responsibility to manage domain names is delegated to organizations which can further delegate management of sub-domains.
Due to its importance in the operation of the Internet, domain name servers are usually operated redundantly. The databases of both servers are periodically synchronized.
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Pacemaker is an open source high-availability and load balancing stack for Linux. It provides unified configuration and management of cluster resources through tools like pcs and crmsh. The document discusses installing and configuring the necessary Pacemaker components - Pacemaker, Corosync, SBD and fence agents - on nodes to enable high availability of a Zabbix server through active-passive replication and fencing. A virtual IP will be configured to fail over between nodes when the active node fails.
Name Based Net Architectures
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2. IPNL routing works by including optional FQDN and global address headers. Hosts know their FQDN/IP mappings and nearby routers know routing information. Experiments show IPNL introduces minimal latency overhead.
3. While IPNL maintains IPv4 properties like long addresses and robustness, it enables greater address scalability through realm-based addressing and isolation of site networks.
Name Based Net Architectures
The document discusses network architecture and name-based networks. It introduces the concepts of names, addresses, routes, and name-address bindings in networks. It discusses issues like mobility, address reuse, and updates when hosts change locations. Various approaches are described, including using the DNS, routing injections, tunneling, and triangle data flow to perform global server load balancing. A new proposed technique called Virtual Block Injection is described, which aims to address some limitations of other approaches.
Hadoop 1.x vs 2
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DHCP
This document provides an overview of DHCP and DNS protocols. It discusses how DHCP can be used to automatically assign IP addresses and network configuration options to clients. DNS is used to map domain names to IP addresses and provides a distributed hierarchical database to store information about domain names. The document describes the basic components, operations, and implementations of both DHCP and DNS protocols.
Dns protocol design attacks and security
The document discusses DNS security and attacks such as cache poisoning, denial of service attacks through query flooding, and man-in-the-middle attacks through DNS hijacking. It provides examples using tools like dnsFlood.pl and dnshijacker to demonstrate these attacks, and recommends mitigations like restricting queries, preventing unauthorized zone transfers, using DNSSEC, and configuring TSIG to secure DNS messages.
Osnug meetup-tungsten fabric - overview.pptx
Tungsten Fabric SDN Controller overview, Microservices Architecture, and Multi-Cloud feature overview
DNS Survival Guide
The document provides an overview of DNS history and requirements for maintaining a DNS infrastructure. It discusses how DNS has evolved since 1983 to support features like load balancing, geobalancing, failover, and security protocols. When choosing a DNS software product or service provider, key considerations include scalability, supported features, dynamic configuration, failover capabilities, and protection against DDoS attacks. Maintaining DNS with multiple service providers can improve performance and reliability compared to a single provider.
DNS Survival Guide.
A contemporary network service heavily depends on domain name system operating normally. Yet, often issues and caveats of typical DNS setup are being overlooked. DNS (like BGP before) is expected to "just work" everywhere, however, just as BGP, this is a complex protocol and a complex solution where a lot of things could go wrong in multiple ways under different circumstances. This talk is supposed to provide some assistance both in maintaining your own DNS infrastructure and in relying on service providers doing this.
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https://bit.ly/Automation_Student_Kickstart
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DNS in the Cloud
- 1. DNS in the Cloud Route53 & Dynect 21-12-2013, AWS User Group Bangalore Meetup Habeeb Rahman | Apigee | @habi_pk
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- 6. UDP & TCP Port 53
- 8. DNS Types
- 10. Secondary(Slave)
- 11. Caching
- 12. Forwarding
- 13. Authoritative
- 14. Synergy
- 15. DNS Appliances
- 17. Citrix Netscaler
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- 23. Hosted vs Cloud
- 24. APIs
- 29. Same destination IP but different routes 129.250.4.142
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- 33. Health Check - Route53
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- 39. Real Time Traffic Management Service (Dynect)