Podcast
Questions and Answers
Average run time increases as the number of CPU cores on the indexers decreases.
Average run time increases as the number of CPU cores on the indexers decreases.
False
How does IT Service Intelligence (ITSI) impact the planning of a Splunk deployment?
How does IT Service Intelligence (ITSI) impact the planning of a Splunk deployment?
To activate replication for an index in an indexer cluster, what attribute must be configured in indexes.conf on all peer nodes?
To activate replication for an index in an indexer cluster, what attribute must be configured in indexes.conf on all peer nodes?
Which of the following options can improve the reliability of syslog delivery to Splunk? (Select all that apply.)
Which of the following options can improve the reliability of syslog delivery to Splunk? (Select all that apply.)
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Which component in the splunkd.log will log information related to bad event breaking?
Which component in the splunkd.log will log information related to bad event breaking?
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Which of the following should be done when installing Enterprise Security on a Search Head Cluster? (Select all that apply.)
Which of the following should be done when installing Enterprise Security on a Search Head Cluster? (Select all that apply.)
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Which of the following statements describe a Search Head Cluster (SHC) captain? (Select all that apply.)
Which of the following statements describe a Search Head Cluster (SHC) captain? (Select all that apply.)
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When adding or decommissioning a member from a Search Head Cluster (SHC), what is the proper order of operations?
When adding or decommissioning a member from a Search Head Cluster (SHC), what is the proper order of operations?
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What corrective action should be taken when a search head member displays an error pulling configurations from the search head cluster captain?
What corrective action should be taken when a search head member displays an error pulling configurations from the search head cluster captain?
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Consider a use case involving firewall data. What must be evaluated before installing a non-Splunk Technical Add-On? (Select all that apply.)
Consider a use case involving firewall data. What must be evaluated before installing a non-Splunk Technical Add-On? (Select all that apply.)
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When planning a search head cluster, which of the following is true?
When planning a search head cluster, which of the following is true?
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Which command will permanently decommission a peer node operating in an indexer cluster?
Which command will permanently decommission a peer node operating in an indexer cluster?
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Which Splunk tool offers a health check for administrators to evaluate the health of their Splunk deployment?
Which Splunk tool offers a health check for administrators to evaluate the health of their Splunk deployment?
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A multi-site indexer cluster can be configured using which of the following? (Select all that apply.)
A multi-site indexer cluster can be configured using which of the following? (Select all that apply.)
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Which search will show all deployment client messages from the client (UF)?
Which search will show all deployment client messages from the client (UF)?
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Which search head cluster component is responsible for pushing knowledge bundles to search peers?
Which search head cluster component is responsible for pushing knowledge bundles to search peers?
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Which Splunk internal index contains license-related events?
Which Splunk internal index contains license-related events?
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What does setting site=site0 on all Search Head Cluster members do in a multi-site indexer cluster?
What does setting site=site0 on all Search Head Cluster members do in a multi-site indexer cluster?
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When configuring a Splunk indexer cluster, what are the default values for replication and search factor?
When configuring a Splunk indexer cluster, what are the default values for replication and search factor?
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A Splunk user successfully extracted an IP address into a field called src_ip. What may explain why another user cannot see that field?
A Splunk user successfully extracted an IP address into a field called src_ip. What may explain why another user cannot see that field?
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What is the default log size for Splunk internal logs?
What is the default log size for Splunk internal logs?
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To optimize the distribution of primary buckets; when does primary rebalancing automatically occur? (Select all that apply.)
To optimize the distribution of primary buckets; when does primary rebalancing automatically occur? (Select all that apply.)
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What is a Splunk Job? (Select all that apply.)
What is a Splunk Job? (Select all that apply.)
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What should be done to increase scheduled search capacity on the search head cluster?
What should be done to increase scheduled search capacity on the search head cluster?
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Which of the following describe migration from single-site to multisite index replication?
Which of the following describe migration from single-site to multisite index replication?
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What is the algorithm used to determine captaincy in a Splunk search head cluster?
What is the algorithm used to determine captaincy in a Splunk search head cluster?
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The guidance Splunk gives for estimating size for syslog data is 50% of the original data size. What does this divide between files in the index?
The guidance Splunk gives for estimating size for syslog data is 50% of the original data size. What does this divide between files in the index?
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Which of the following is a best practice to maximize indexing performance?
Which of the following is a best practice to maximize indexing performance?
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Which artifacts are included in a Splunk diag file? (Select all that apply.)
Which artifacts are included in a Splunk diag file? (Select all that apply.)
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Which of the following is true regarding Splunk Enterprise performance? (Select all that apply.)
Which of the following is true regarding Splunk Enterprise performance? (Select all that apply.)
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Configurations from the deployer are merged into which location on the search head cluster member?
Configurations from the deployer are merged into which location on the search head cluster member?
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The frequency at which a deployment client contacts the deployment server is controlled by what?
The frequency at which a deployment client contacts the deployment server is controlled by what?
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A customer has installed a 500GB Enterprise license. How much data can they ingest before search is locked out?
A customer has installed a 500GB Enterprise license. How much data can they ingest before search is locked out?
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Which will cause the greatest reduction in disk size requirements for a cluster of N indexers running Splunk Enterprise Security?
Which will cause the greatest reduction in disk size requirements for a cluster of N indexers running Splunk Enterprise Security?
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Stakeholders have identified high availability for searchable data as their top priority. Which of the following best addresses this requirement?
Stakeholders have identified high availability for searchable data as their top priority. Which of the following best addresses this requirement?
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When Splunk is installed, where are the internal indexes stored by default?
When Splunk is installed, where are the internal indexes stored by default?
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A Splunk instance has the following settings in SPLUNK_HOME/etc/system/local/server.conf: [clustering] mode = master, replication_factor = 2, pass4SymmKey = password123. Which statements describe this instance? (Select all that apply.)
A Splunk instance has the following settings in SPLUNK_HOME/etc/system/local/server.conf: [clustering] mode = master, replication_factor = 2, pass4SymmKey = password123. Which statements describe this instance? (Select all that apply.)
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In which phase of the Splunk Enterprise data pipeline are indexed extraction configurations processed?
In which phase of the Splunk Enterprise data pipeline are indexed extraction configurations processed?
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Which should be included in a deployment plan?
Which should be included in a deployment plan?
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To calculate the daily disk consumption, per indexer, if indexer clustering is implemented, what additional information is needed?
To calculate the daily disk consumption, per indexer, if indexer clustering is implemented, what additional information is needed?
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Study Notes
Splunk Diagnostics and Configuration
- A Splunk diagnostic (diag) can include server specs, open connections, internal log files, and index listings.
- To troubleshoot issues with regex in monitor stanzas, search the splunkd.log file.
- The command to convert a Splunk instance to a license slave is splunk edit licenser-localslave.
Integration and Performance
- Splunk can search data in HDFS and issue alerts to third-party systems.
- Indexers should be clustered for high availability, especially when ingesting significant daily data volumes.
Search Head Clustering
- Captaincy in search head clustering can be transferred using commands executed from the current captain or the member intended to become the captain.
- Scheduled searches can be directed away from the captain to reduce workload using specific settings on all members.
Troubleshooting Tools
- Use
telnetandtcpdumpto diagnose connection issues between indexers and forwarders. - The command to check the status of tailed files is through CURL commands directed at TailingProcessor:FileStatus.
Data Management and Indexing
- Single-site clustered buckets continue to replicate and age out based on existing policies when converting to a multi-site cluster.
- The attributes affecting indexing performance significantly include LINE_BREAKER, ANNOTATE_PUNCT, and SHOULD_LINEMERGE.
Disk Storage and System Requirements
- Recommended RAID setup for performance in Splunk environments is RAID 10.
- Minimum reference server specifications for a Splunk indexer include 12 CPU cores, 12GB RAM, and 800 IOPS.
Deployment Planning
- Identify data visibility and management policies during deployment planning.
- Collect requirements and inventory data sources as initial steps.
Licensing in Clusters
- Free licenses do not support clustering; replicated data does not count against licensing, but each cluster member requires its own license.
- Shared license pools are mandatory for cluster members.
KV Store and Log Management
- A collection for the KV store is defined in collections.conf.
- Security options like certificate authentication need explicit configuration between forwarders and indexers.
Client Configuration and Data Delivery
- Use client filters in serverclass.conf for DNS names, IP addresses, and machine types.
- To improve syslog reliability, utilize TCP instead of UDP and consider persistent systems with Universal Forwarders.
App and Deployment Management
- The deployer distributes configurations to search head cluster members but only when necessary and for non-replicable changes.
- Troubleshoot missing apps on deployment clients by checking multiple configuration files.
Additional Tools and Improvements
- Utilize the command
splunk clean kvstoreto clear the KV store. - Monitoring infrastructure for performance improvement includes optimizing scheduled searches during off-peak times and redistributing user loads.
Search Head Cluster Details
- Maintain at least three search heads for clustering with a deployer responsible for distributing key configurations.
- The KV store can form a maximum of 50 members within a search head cluster.
Event Management
- Improve indexing performance by adjusting settings related to ingestion pipelines when CPU and memory resources appear underutilized.
- Logs generated by metrics.log regarding license utilization occur at 30-second intervals.### Search Head Cluster (SHC)
- SHC captain is responsible for job scheduling, managing alert action suppressions, and replicating knowledge bundles to search peers.
- Proper sequence for adding a member to SHC includes deleting the existing Splunk Enterprise instance, installing and initializing the new instance, then joining the SHC.
- An error in pulling configurations indicates the need for running a resync command on the search head cluster member involved.
Technical Add-Ons (TAs)
- Assess TAs for firewall data by identifying scheduled searches, validating data model enablement, and confirming installation requirements on both search heads and indexers.
Indexer Clusters
- All search heads in a cluster must use the same operating system and must be cluster members; standalone search heads are not allowed.
- Permanent decommissioning of a peer node in an indexer cluster is achieved using the
splunk offline --enforce-countscommand.
Health Monitoring and Capacity
- The Monitoring Console provides administrators with evaluations of their Splunk deployment's health status.
- Capacity in a search head cluster can be increased by adding another search head, as it enhances scheduled search capacity.
- Role of replication factor (default is 3) and search factor (default is 2) in indexer clusters, affecting data redundancy and availability.
Field Visibility and Job Definitions
- Issues with field visibility in search results may arise due to private knowledge objects or settings related to search mode efficiency.
- A Splunk Job is defined as a search process triggered via a report or an alert.
Data Management and Configuration
- Corrective actions during system configuration should include merging configurations from the deployer into the appropriate local directories.
- The frequency of deployment client interactions with the deployment server is determined by
phoneHomeIntervalInSecsin the respective configuration file.
License Management
- Having a combination of an Enterprise license and a no enforcement license allows ingesting more data without locking out search capabilities.
- Best practices to maximize indexing performance recommend minimizing configuration generality in setup.
Clustering Best Practices
- Migrating to a multisite index replication requires understanding of single-site policies and ensuring master nodes at each location to facilitate replication effectively.
- Increasing the search factor directly enhances the availability of searchable data in the indexer cluster setup.
Storage and Internal Logs
- Default log size for Splunk internal logs is 25MB, with internal indexes stored in
SPLUNK_HOME/var/lib.
Deployment Planning
- Deployment plans should consistently include current logging details, data source inventory, and future topology diagrams, ensuring awareness of the environment and stakeholders involved.
Index Bucket Storage
- For indexers with clustering, everyday analysis of new index buckets requires understanding replication factors and daily indexing volume to estimate storage consumption accurately.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on Splunk diagnostics with this quiz. You will be asked about the contents of a Splunk diagnostic report. Challenge yourself to identify which information is included in these important files.
