Podcast
Questions and Answers
What is the primary function of a Splunk forwarder?
What is the primary function of a Splunk forwarder?
- To create automated reports for users
- To manage configurations across servers
- To analyze indexed data
- To collect data from local sources and forward it (correct)
Which component in Splunk is responsible for indexing the data and making it searchable?
Which component in Splunk is responsible for indexing the data and making it searchable?
- Search head
- Forwarder
- Indexer (correct)
- Deployment server
Under what condition can a report in Splunk be run using the permissions of the report user?
Under what condition can a report in Splunk be run using the permissions of the report user?
- When the report is accessed directly from the dashboard
- When the report is scheduled and run for the first time
- When the report is not shared with any other users
- When the owner configures the report to run as User (correct)
Which statement is true regarding automatic lookups in Splunk?
Which statement is true regarding automatic lookups in Splunk?
How many phases can the Splunk index time process be broken down into?
How many phases can the Splunk index time process be broken down into?
What must be done to access search job data for more than 7 days?
What must be done to access search job data for more than 7 days?
What happens when local files are uploaded through Upload options in Splunk?
What happens when local files are uploaded through Upload options in Splunk?
Which statement about job lifetime in Splunk is correct?
Which statement about job lifetime in Splunk is correct?
What is the role of a deployment server in a Splunk environment?
What is the role of a deployment server in a Splunk environment?
Scheduled reports in Splunk are limited to what functionality regarding permissions?
Scheduled reports in Splunk are limited to what functionality regarding permissions?
Which of the following options can be selected in the monitor option GUI?
Which of the following options can be selected in the monitor option GUI?
What is the best practice when executing a Splunk search?
What is the best practice when executing a Splunk search?
What is NOT a primary function of a Heavy Forwarder (HF) in Splunk?
What is NOT a primary function of a Heavy Forwarder (HF) in Splunk?
Which of the following options is NOT recommended for improving search performance in Splunk?
Which of the following options is NOT recommended for improving search performance in Splunk?
Which of the following components does NOT typically reside where data originates?
Which of the following components does NOT typically reside where data originates?
How can a user ensure their scheduled report reflects the correct data scope?
How can a user ensure their scheduled report reflects the correct data scope?
When viewing a dashboard panel based on a report, which is true?
When viewing a dashboard panel based on a report, which is true?
Where does the licensing meter in Splunk occur?
Where does the licensing meter in Splunk occur?
What is a potential consequence of using wildcards in a Splunk search?
What is a potential consequence of using wildcards in a Splunk search?
What is the correct file location for inputs.conf in a Splunk instance?
What is the correct file location for inputs.conf in a Splunk instance?
Which of the following represents a common misconception about heavy forwarders?
Which of the following represents a common misconception about heavy forwarders?
In which situation might you want to search multiple indexes in Splunk?
In which situation might you want to search multiple indexes in Splunk?
Which of these inputs can be configured in the inputs.conf file?
Which of these inputs can be configured in the inputs.conf file?
Why is specifying fewer search terms sometimes problematic?
Why is specifying fewer search terms sometimes problematic?
Which search query correctly counts the number of events in the 'security failure' index?
Which search query correctly counts the number of events in the 'security failure' index?
What would be the correct search command to return events from the 'access_combined' sourcetype?
What would be the correct search command to return events from the 'access_combined' sourcetype?
Which option will provide the most efficient search performance?
Which option will provide the most efficient search performance?
What is considered the best practice for naming reports in Splunk?
What is considered the best practice for naming reports in Splunk?
If a search is run and no index is specified, what will be the outcome?
If a search is run and no index is specified, what will be the outcome?
Which Splunk command would you use to create summary statistics?
Which Splunk command would you use to create summary statistics?
How should fields be treated when they are case sensitive in Splunk?
How should fields be treated when they are case sensitive in Splunk?
Why should wildcards be avoided in search queries?
Why should wildcards be avoided in search queries?
When viewing the results of a search job from the Activity menu, what events are displayed?
When viewing the results of a search job from the Activity menu, what events are displayed?
What is the quickest way to learn what data is present in a Splunk deployment?
What is the quickest way to learn what data is present in a Splunk deployment?
Which aspects can be edited by a user with the capability to edit reports?
Which aspects can be edited by a user with the capability to edit reports?
What metadata field is assigned to every event in Splunk?
What metadata field is assigned to every event in Splunk?
Which two search filters are considered the most efficient in Splunk?
Which two search filters are considered the most efficient in Splunk?
What is the best method to create a report for the last 24 hours of events?
What is the best method to create a report for the last 24 hours of events?
When is the pipe character | used in search strings?
When is the pipe character | used in search strings?
What function does the 'owner' metadata field serve in Splunk?
What function does the 'owner' metadata field serve in Splunk?
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Study Notes
Lookup Commands
lookup
commands are used to perform lookups when searching.inputlookup
command reads data from a lookup table.inputlookup
command is not necessary for creating an automatic lookup.- It's useful to test the lookup table to ensure that it contains the correct data before using it in a search.
Splunk Components
- Splunk forwarder is a lightweight component that collects data from various sources on the local machine and forwards it to the Splunk indexers.
- Splunk indexer is responsible for indexing the data and making it searchable.
- Search head is used to search and analyze the indexed data.
- Deployment server manages configurations and settings across distributed Splunk environments.
Scheduled Report Scope
- The owner of a report can configure permissions so that the report uses either the User role or the owner's profile at runtime.
Splunk Search Best Practices
- Filter as early as possible to reduce the amount of data Splunk needs to search.
- Specify the minimum number of indexes required for the search.
- Use specific search terms to ensure accurate results.
- Use wildcards sparingly, as they can slow down the search and return irrelevant results.
Dashboard Panels
- You can modify the search string in a dashboard panel based on a report.
- However, you cannot change or configure the visualization.
Statistical Analysis
- The
stats
command in Splunk summarizes search results and creates summary statistics. - The
count
function counts the number of matching events in the search results. - The
as
keyword names the resulting field.
Data Source Identification
sourcetype=Access_Combined
will return events from theaccess_combined
sourcetype.- Field names are case-sensitive, but field values are not.
Efficient Index Searches
(index=web OR index=sales)
provides the most efficient search performance when searching multiple indexes.- Specifying specific indexes improves search performance.
- Wildcards (*, ?) make searches more expensive.
Naming Conventions
- Use a consistent naming convention for reports, including characteristics like group and object.
- This helps users easily identify and find the reports they need.
Default Index Search Behavior
- If an index is not specified in a search string, events from every index searched by default to which the user has access will be returned.
Splunk Indexing Phases
- The Splunk index time process consists of three phases: input, parsing, and indexing.
Splunk Monitoring Options
- Monitor option provides one-time or continuous monitoring of files, directories, HTTP events, network ports, or data gathering scripts located on Splunk Enterprise instances.
- Options include File & Directories, HTTP Event Collector (HEC), TCP/UDP and Scripts.
File Uploads & Indexing
- Uploading local files through the Upload option indexes the file only once.
- Splunk uses the file's inode to determine if the file has already been indexed, so uploading the same file multiple times doesn't re-index it.
- However, modifying the file and uploading it again will re-index it as a new file.
Heavy Forwarder Functionalities
- Heavy forwarders are used for parsing data, forwarding data to indexers, and searching the data that passes through them.
- Masking is not a primary function of the heavy forwarder.
Licensing Meter Location
- The licensing meter happens on the heavy forwarder.
Search Job Results Viewing
- When viewing results of a search job from the Activity menu, the same events from when the original search was executed are displayed.
Data Deployment Overview
- Click Data Summary in Splunk Web for a quick and comprehensive overview of data in a Splunk deployment.
Report Editing Capabilities
- Users with report editing capabilities can edit:
- Acceleration
- Schedule
- Permissions
Event Metadata
host
is a metadata field assigned to every event in Splunk.
Efficient Search Filters
_time
andindex
are the two most efficient search filters because they are indexed fields.
Reporting Last 24 Hours
- Use the time range picker to select "Last 24 hours" to create a report that shows the last 24 hours of events.
Pipe Character Usage
- The pipe character (|) is used before commands in search strings to specify that the output of one command should be used as the input to the next command.
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