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Author: SysAdminXpert

Simple Steps for Installing Munin Monitoring Tool

Munin the monitoring tool surveys all your computers and remembers what it saw. It presents all the information in graphs through a web interface. Its emphasis is on the plug and play capabilities. After completing an installation a high number of monitoring plugins will be playing with no more effort. Credit goes to munin for developing such a good monitoring tool. Using Munin you can easily monitor the performance of your computers, networks, SANs, applications, weather measurements and whatever comes to mind. It makes it easy to determine “what’s different today” when a performance problem crops up. It makes it easy to see how you’re doing capacity-wise on any resources. Munin uses the excellent RRDTool (written by Tobi Oetiker) and the framework is written in Perl, while plugins may be written in any language. Munin has a master/node architecture in which the master connects to all the nodes at regular intervals and asks them for data. It then stores the data in RRD files, and (if needed) updates the graphs. One of the main goals has been ease of creating new plugins (graphs). This article will help you to install Munin on your system. Step 1: Set Up EPEL Repository First, we need to add an epel repository in our system. Use one of the following commands to install as per system architecture. CentOS/RHEL 6, 32 Bit (i386): #...

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HTTP Status and Error Codes

HTTP, Hypertext Transfer Protocol, is the method by which clients (i.e. you) and servers communicate. When someone clicks a link, types in a URL or submits out a form, their browser sends a request to a server for information. It might be asking for a page, or sending data, but either way, that is called an HTTP Request. When a server receives that request, it sends back an HTTP Response, with information for the client. Usually, this is invisible; though I’m sure you’ve seen one of the very common Response codes – 404, indicating a page was not found. There are a fair few more status codes sent by servers, and the following is a list of the current ones in HTTP 1.1, along with an explanation of their meanings.A more technical breakdown of HTTP 1.1 status codes and their meanings is available at http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html. There are several versions of HTTP, but currently HTTP 1.1 is the most widely used. Informational•    100 – ContinueA status code of 100 indicates that (usually the first) part of a request has been received without any problems, and that the rest of the request should now be sent.•    101 – Switching ProtocolsHTTP 1.1 is just one type of protocol for transferring data on the web, and a status code of 101 indicates that the server is changing to the protocol it defines in...

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Free DNS Tools which helps to Administer your Network

DNS Tools which will help you to administer, troubleshoot, manage, and secure your network. A few you may have heard of it, but most likely at least a few of these free network and DNS tools will be new to you and worth checking out. eToolz: This portable Windows application includes all the common network utilities for diagnosis and troubleshooting, such as NS-Lookup, tracing, whois and ping. It also offers tools for Google PageRank checking, email address verification, retrieving HTTP header info and connecting to Internet time servers. Fing: This network discovery and scanning tool is available for Windows, Mac OS X and Linux computers, as well as Android and iOSmobile devices. The computer versions don’t currently have a GUI and must be used via an interactive command-line interface, but the mobile versions do have a GUI and are great for scanning Wi-Fi networks. Advanced IP Scanner: This network discovery and scanning tool features a Windows GUI. It offers shortcuts to the resources (HTTP, HTTPS, FTP or shared folders) of detected computers and clients. It also supports remote wake up and shut down of remote groups of Windows machines. If you use the Radmin remote access solution, you can also connect to any detect machine with Radmin Server. SpiceWorks: The SpiceWorks solution combines network monitoring, help desk ticketing, UPS power management, RFQ, and PC inventory tools. It also features...

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Use of DNS and Common DNS Record Types

What is DNS ? Domain Name System (or Service or Server), an Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they’re easier to remember. The Internet however, is really based on IP addresses. Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. For example, the domain name www.example.com might translate to 198.105.222.11. The DNS system is, in fact, its own network. If one DNS server doesn’t know how to translate a particular domain name, it asks another one, and so on, until the correct IP address is returned. The basics of creating A records (which translate a hostname to an IP address) are simple enough TTL (Time to Live) is a setting for each DNS record that specifies how long a resolver is supposed to cache (or remember) the DNS query before the query expires and a new one needs to be done. The benefits of caching are pretty obvious: it’s a lot faster to check your local resolver’s cache then having to look up a DNS record that isn’t already cached. This speed up your Internet experience when visiting a site you go to often (since less time is needed to complete DNS lookups) and also helps lower the load on DNS servers around the world. What happens when the DNS...

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Are you Confuse between IT Certifications or College Degrees for your Career

It doesn’t matter if you’re new to IT or an industry — you still might not be clear on whether you need certifications or degrees to move your career forward. Most of the time people will answer “it depends.” But there are good reasons why the answer differs like: ·         Depending on how much experience you have. ·         What area within IT you are most interested in? ·         What job you want to apply for? ·         What career path you have in mind? For most in the field today, however, the answer usually is do both, because the certification and the degree combined qualify you for a career path in which a certification or a degree by itself wouldn’t. Best Practices if your planning to upgrade your skills and advancing your career 1. Earn an Appropriate Certification for Your IT Field. Recent data from both IT leaders and HR hiring experts indicates that you have a clear advantage over your competition, especially in security, if you have a certification. In 2011 Information Security Leaders conducted a survey of more than 1300 people ranging from individual contributors to executive leadership. Here are some key findings from their survey. ·         An overwhelming number (3%) of those who have obtained a certification believe that the time/money spent was a good use of their resources, and 39.7% of respondents believe that investing in certification is the most important step for their careers....

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