![]() You can also have servers in several locations correlate their data to a central Splunk system for visibility across your entire infrastructure. If you’re looking at a larger implementation of Splunk, you can cluster several servers together for high availability. If you want to integrate Splunk into other tools, there are SDKs for Java, JavaScript, C#, Python, PHP, and Ruby. The Windows app really makes it quick to get value from Splunk for OS event and performance logging. Splunk excels at correlating data for business intelligence, security and compliance, and operational management requirements. Once you’ve found the information that’s crucial for you, it’s easy to create alerts for monitoring, as well as reports and dashboards to visualize this information over time. Searching using SPL is very powerful, although it takes a little while to get used to the syntax.Īlthough it’s interesting to be able to mine through large log files easily, the real key comes when you can correlate data between different sources (based on time indexing), such as finding every user account across your entire network that failed to log in, or finding a particular page that is causing errors in a web-based shopping application. Everything is indexed by time, which is where the real power of Splunk comes into play. Note that Splunk helps by providing interesting fields that can help you find what you’re looking for, as well as statistics for each of those fields. Once you get results back, you can narrow your search further. For more complex searches, there’s Splunk Search Processing Language (SPL), with shortcuts to help you find exactly what you’re looking for. To start using Splunk, you simply enter terms in the search window. Splunk stores your data in its original format and only applies a schema to it at indexing time. With the Windows app installed, it was easy for me to access event logs and performance data with preconfigured lists, dashboards, and graphs. The types of machine data that Splunk can handle out of the box cover all the usual suspects. Some of these are free, whereas others require licensing. Think of these as templates that are already set up and configured to work with a particular type of log source, such as Windows, Box, iptables, JBoss, Django, AWS Billing, Exchange, Cisco IOS, AD, CheckPoint, VMware, MobileIron, UNIX/Linux, NetFlow, Oracle, Android, and Hyper-V, among many, many others. While the basic Splunk installation gives you the option to configure and search through many different data sources, apps are one thing that will make your life easier. ![]() The main page of Splunk gives you quick access to any apps you have installed, as well as access to the search functionality. The installation is quick and, when complete, presents you with a login page in your browser. You can use Managed Service Accounts (MSAs) if your environment is Server 2008 or later. If you want to monitor other systems in an AD environment, make sure to install Splunk as a domain user with the right permissions. The former is recommended in most cases unless you can’t install software on production servers or you don’t have administrative access (more information here). You can gather the data that you want Splunk to analyze in two ways: with an agent on each system (called a forwarder) or via WMI. The Windows installation prompts you whether you want to run Splunk as a local system or other user (you can change your mind later). Supported platforms include Windows, Linux, Solaris, OSX, FreeBSD, AIX, and HP-UX. Head over to the download page and grab the installer for Splunk. You can then set up alerts based on searches as well as create reports and dashboards. ![]() Splunk offers an interesting solution to this problem (and many others) by being able to ingest almost any type of “machine data” (logs generated by any system), keeping it in its native format and letting you search through it easily.
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