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Splunk Diagnostics Quiz
40 Questions
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Splunk Diagnostics Quiz

Created by
@ReputableTangent4657

Questions and Answers

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?

  • ITSI in a Splunk deployment does not require additional hardware resources.
  • Depending on the Key Performance Indicators that are being tracked, additional infrastructure may be needed. (correct)
  • The amount of users using ITSI will not impact performance.
  • ITSI requires a dedicated deployment server.

    • To activate replication for an index in an indexer cluster, what attribute must be configured in indexes.conf on all peer nodes?

  • repFactor = 0
  • repFactor = auto (correct)
  • replicate = 0
  • replicate = auto

    • Which of the following options can improve the reliability of syslog delivery to Splunk? (Select all that apply.)

    <p>Use TCP syslog.</p> Signup and view all the answers

    Which component in the splunkd.log will log information related to bad event breaking?

    <p>AggregatorMiningProcessor</p> Signup and view all the answers

    Which of the following should be done when installing Enterprise Security on a Search Head Cluster? (Select all that apply.)

    <p>Install Enterprise Security on the deployer.</p> Signup and view all the answers

    Which of the following statements describe a Search Head Cluster (SHC) captain? (Select all that apply.)

    <p>Manages alert action suppressions (throttling).</p> Signup and view all the answers

    When adding or decommissioning a member from a Search Head Cluster (SHC), what is the proper order of operations?

    <ol> <li>Delete Splunk Enterprise, if it exists. 2. Install and initialize the instance. 3. Join the SHC.</li> </ol> Signup and view all the answers

    What corrective action should be taken when a search head member displays an error pulling configurations from the search head cluster captain?

    <p>Run the splunk resync shcluster-replicated-config command on this member.</p> Signup and view all the answers

    Consider a use case involving firewall data. What must be evaluated before installing a non-Splunk Technical Add-On? (Select all that apply.)

    <p>Identify the number of scheduled or real-time searches.</p> Signup and view all the answers

    When planning a search head cluster, which of the following is true?

    <p>All search heads must use the same operating system.</p> Signup and view all the answers

    Which command will permanently decommission a peer node operating in an indexer cluster?

    <p>splunk offline --enforce-counts</p> Signup and view all the answers

    Which Splunk tool offers a health check for administrators to evaluate the health of their Splunk deployment?

    <p>Monitoring Console</p> Signup and view all the answers

    A multi-site indexer cluster can be configured using which of the following? (Select all that apply.)

    <p>Run a splunk edit cluster-config command from the CLI.</p> Signup and view all the answers

    Which search will show all deployment client messages from the client (UF)?

    <p>index=_internal component= DC* host= | stats count by message</p> Signup and view all the answers

    Which search head cluster component is responsible for pushing knowledge bundles to search peers?

    <p>Captain</p> Signup and view all the answers

    Which Splunk internal index contains license-related events?

    <p>_internal</p> Signup and view all the answers

    What does setting site=site0 on all Search Head Cluster members do in a multi-site indexer cluster?

    <p>Disables search site affinity.</p> Signup and view all the answers

    When configuring a Splunk indexer cluster, what are the default values for replication and search factor?

    <p>replication_factor = 3 search_factor = 2</p> Signup and view all the answers

    A Splunk user successfully extracted an IP address into a field called src_ip. What may explain why another user cannot see that field?

    <p>The colleague did not explicitly use the field in the search and the search was set to Fast Mode.</p> Signup and view all the answers

    What is the default log size for Splunk internal logs?

    <p>25MB</p> Signup and view all the answers

    To optimize the distribution of primary buckets; when does primary rebalancing automatically occur? (Select all that apply.)

    <p>A peer node joins or rejoins the cluster.</p> Signup and view all the answers

    What is a Splunk Job? (Select all that apply.)

    <p>A search process kicked off via a report or an alert.</p> Signup and view all the answers

    What should be done to increase scheduled search capacity on the search head cluster?

    <p>Add another search head to the cluster.</p> Signup and view all the answers

    Which of the following describe migration from single-site to multisite index replication?

    <p>Multisite policies apply to new data only.</p> Signup and view all the answers

    What is the algorithm used to determine captaincy in a Splunk search head cluster?

    <p>Raft distributed consensus.</p> Signup and view all the answers

    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?

    <p>rawdata is: 15%, tsidx is: 35%</p> Signup and view all the answers

    Which of the following is a best practice to maximize indexing performance?

    <p>Minimize configuration generality.</p> Signup and view all the answers

    Which artifacts are included in a Splunk diag file? (Select all that apply.)

    <p>Configuration files.</p> Signup and view all the answers

    Which of the following is true regarding Splunk Enterprise performance? (Select all that apply.)

    <p>Adding search heads provides additional CPU cores to run more concurrent searches.</p> Signup and view all the answers

    Configurations from the deployer are merged into which location on the search head cluster member?

    <p>SPLUNK_HOME/etc/apps/APP_HOME/default</p> Signup and view all the answers

    The frequency at which a deployment client contacts the deployment server is controlled by what?

    <p>phoneHomeIntervalInSecs attribute in deploymentclient.conf</p> Signup and view all the answers

    A customer has installed a 500GB Enterprise license. How much data can they ingest before search is locked out?

    <p>Search is not locked out. Violations are still recorded.</p> Signup and view all the answers

    Which will cause the greatest reduction in disk size requirements for a cluster of N indexers running Splunk Enterprise Security?

    <p>Setting the cluster search factor to N-1.</p> Signup and view all the answers

    Stakeholders have identified high availability for searchable data as their top priority. Which of the following best addresses this requirement?

    <p>Increasing the search factor in the cluster.</p> Signup and view all the answers

    When Splunk is installed, where are the internal indexes stored by default?

    <p>SPLUNK_HOME/var/lib</p> Signup and view all the answers

    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.)

    <p>This Splunk instance needs to be restarted.</p> Signup and view all the answers

    In which phase of the Splunk Enterprise data pipeline are indexed extraction configurations processed?

    <p>Parsing</p> Signup and view all the answers

    Which should be included in a deployment plan?

    <p>Current logging details and data source inventory.</p> Signup and view all the answers

    To calculate the daily disk consumption, per indexer, if indexer clustering is implemented, what additional information is needed?

    <p>Total daily indexing volume, number of peer nodes, replication factor, and search factor.</p> Signup and view all the answers

    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 telnet and tcpdump to 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 kvstore to 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-counts command.

    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 phoneHomeIntervalInSecs in 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.

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    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.

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