Questions
Find answers to frequently asked development questions. For information about Better Stack products, explore our docs.
Usecases: Influxdb Vs. Prometheus
When choosing between InfluxDB and Prometheus, it's essential to consider their distinct features and use cases. Both databases are designed for time-series data, but they have different strengths ...
Get Total Requests in a Period of Time
To calculate the total number of requests over a specified period of time using Prometheus, you can utilize the increase function. This function is ideal for summing up the total count of a counter...
Do I Understand Prometheus's Rate Vs Increase Functions Correctly?
Understanding the rate and increase functions in Prometheus is crucial for accurately analyzing time-series data. Here's a detailed breakdown of both functions and their differences to ensure you h...
How to Stop Logstash From Creating a Default Mapping in Elasticsearch
When Logstash sends data to Elasticsearch, it can automatically create indices and mappings for new data types. However, this can lead to issues, especially if the default mapping doesn’t fit your ...
Logstash - Remove Deep Field From Json File
To remove a deep field from a JSON document in Logstash, you can use the mutate filter, specifically the remove_field directive. This allows you to specify the exact field path you want to remove f...
Check if a String Starts With Number Using Regular Expression
To check if a string starts with a number using a regular expression (regex), you can use a pattern that matches the beginning of the string (^) followed by any digit (\\d). Here’s how you can do t...
Get the Number of Fields on an Index
To get the number of fields in an index created by Logstash in Elasticsearch, you can use Elasticsearch's RESTful API to retrieve the index mapping. The mapping contains information about the field...
Regex Query Syntax Examples in Kibana
Using regular expressions (regex) in Kibana can enhance your ability to query and filter logs and data effectively. Kibana supports regex in its query DSL, particularly in the query_string and wild...
Send Spring Boot Logs Directly to Logstash With No File
Sending Spring Boot logs directly to Logstash without writing them to a file can be achieved using a logging library like Logback or Log4j2 configured to send logs over a network protocol such as T...
Logstash Configtest
Testing your Logstash configuration is an essential step to ensure that your pipelines are correctly set up and functioning as expected. Logstash provides a built-in command-line option to test the...
Is It Possible to Have Centralised Logging for Elasticbeanstalk Docker Apps?
Yes, it is possible to implement centralized logging for Docker applications running on AWS Elastic Beanstalk. Centralized logging helps in monitoring and troubleshooting by aggregating logs from m...
Docker Apps Logging With Filebeat and Logstash
Logging Docker applications using Filebeat and Logstash is a robust solution for collecting, processing, and storing log data. This setup helps in centralizing logs and analyzing them effectively. ...
How to Create Multiple Indexes in Logstash.conf File?
Creating multiple indexes in a Logstash configuration file allows you to organize your data efficiently based on different criteria or log sources. This can be achieved by defining multiple output ...
Import Csv Into Elasticsearch
Importing CSV files into Elasticsearch can be accomplished through several methods, including using Logstash, the Elasticsearch Bulk API, or tools like Kibana. Below, I’ll detail how to do this usi...
List of Syntax for Logstash's Grok
Logstash's Grok filter provides predefined patterns for parsing logs and extracting fields. Here’s a guide to common Grok syntax patterns and examples for their usage. Common Grok Patterns Data Typ...
Can I Delete the Message Field From Logstash?
Yes, you can delete the message field in Logstash if it’s no longer needed after processing. This can be useful for reducing data volume in Elasticsearch or removing redundant information. Here’s a...
Logstash Date Filter Not Updating @Timestamp With Apache Timestamp
If your Logstash date filter isn’t updating the @timestamp field using an Apache log timestamp, it’s often due to mismatches in date format or incorrect field mapping. Here’s a guide to troubleshoo...
How to Debug the Logstash File Plugin
The Logstash file plugin is commonly used to ingest log files, but issues can arise with log reading, file monitoring, or sincedb persistence. Here’s a quick guide to debugging the file plugin effe...
Searchphaseexecutionexception[failed to Execute Phase [Query], All Shards Failed]
The SearchPhaseExecutionException[failed to execute phase [query], all shards failed] error in Elasticsearch usually indicates that a query failed to execute on one or more shards in your cluster. ...
Logstash Date Parsing as Timestamp Using the Date Filter
In Logstash, you can use the date filter to parse dates from log messages and set them as the @timestamp field in your events. This is useful when the timestamp in your logs doesn’t match Logstash'...
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