Questions
Find answers to frequently asked development questions. For information about Better Stack products, explore our docs.
How to Parse Nested JSON Fields in Fluentd
Learn how to configure Fluentd for nested JSON parsing in log messages for enhanced structured logging
How to Fix The “Pattern Not Match” Error in Fluentd
If you're new to FluentD and looking to build a solid foundation, consider checking out our comprehensive guide on how to collect, process, and ship log data with Fluentd. It provides valuable insi...
How to Rotate Log Files in Fluentd?
Fluentd offers the capability to set up log rotation, particularly useful when managing large volumes of logs that consume significant disk space. This feature can be configured through Fluentd's s...
How to Use Conditional Statements In Fluentd
Conditional statements can be seamlessly integrated into Fluentd's record_transformer plugin. Here’s how you can do it: @type recordtransformer enableruby true is_successful ${record["s...
How to Monitor a Whole Directory With Fluentd?
Fluentd provides an efficient way to monitor entire directories for log file updates. Let's say you want to track all log files in a directory like /var/log/app_dir, which contains multiple logs su...
How to exclude pattern in <match> for fluentd config?
To selectively filter log events in Fluentd, you can use the directive to specify which events to process and which to discard. Here's how you can do it: To discard all events that match a specifi...
How to Add Tags to Fluentd Events
Here is how you can add tags to Fluentd events. Let's assume you configured Fluentd to process Nginx access logs from the access.log file with a source configuration like this: @type tail pa...
How to Use Environmental Variables in Fluentd Config
Fluentd, starting from version v1.13.0, allows the integration of environment variables within its configuration using the syntax #{ENV['YOUR_ENV_VARIABLE']}. For instance, if you've defined an env...
How to Send Logs to Multiple Outputs With Same Match Tags in Fluentd?
To direct logs matching a specific tag to multiple outputs in Fluentd, the @type copy directive can be utilized. Here's an example configuration: @type copy @type file path ...
How To Whitelist Better Stack IPs in UFW
Learn how to whitelist Better Stack IPs on UFW and prevent any false incident alerting.
How To Whitelist Better Stack IPs in Digital Ocean
Learn how to whitelist Better Stack IPs on Digital Ocean and prevent any false incident alerting.
How To Whitelist Better Stack IPs and User Agent in Cloudflare
Learn how to whitelist Better Stack IPs on Cloudflare and prevent any false incident alerting.
How To Write Logs To A File With Python?
If you are new to logging in Python, please feel free to start with our Introduction to Python logging to get started smoothly. Otherwise, here is how to write logs to a file in Python: Using Basic...
How To Use Logging In Multiple Modules?
It's recommended to have a logger defined in each module like this: import logging logger = logging.getLogger(name) Then in your main program, do the following: import logging.config logging.config...
How To Log Uncaught Exceptions In Python?
For this, you can use the sys.excepthook that allows us to attach a handler for any unhandled exception: Creating a logger logger = logging.getLogger(name) logging.basicConfig(filename='e...
How to Log to Stdout with Python?
If you are new to logging in Python, please feel free to start with our Introduction to Python logging to get started smoothly. Otherwise, here is how to log to Stdout with Python: Using Basic Conf...
How to log data as JSON with Python
How to Log Data As JSON With Python? The simplest way is to use a custom module.
How To Log All Requests From The Python Request Library?
If you are new to logging in Python, please feel free to start with our Introduction to Python logging to get started smoothly. Otherwise, here is how to log all requests from the python request li...
How To Disable Logging While Running Django Unit Tests?
By Disabling Tests At The Start Of The Application Suppose you want to do it the quick way. In that case, the following line of code will disable any log messages less severe or equal to CRITI...
How To Disable Logging From The Python Request Library?
You can change the log level of the logger taking care of these messages. Setting the level to WARNING will remove the request messages and keep warnings and errors: import logging loggin...
How To Color Python Logging Output?
If you are new to logging in Python, please feel free to start with our Introduction to Python logging to get started smoothly. Otherwise, here is how to color python logging output: 🔭 Want to cent...
How to Implement Moving Averages in Grafana Dashboards
To add moving averages to your Grafana dashboards using popular data sources like Prometheus and InfluxDB. Begin by accessing your Grafana dashboard. To incorporate a moving average into your visua...
How to Set Up a Custom Dashboard on Grafana's Home Page
In this post, you will set a custom dashboard to serve as your default home page site, ensuring you’re immediately presented with the most relevant and insightful data tailored to your needs every ...
How to Duplicate a Dashboard?
Begin by ensuring you are logged into your Grafana account. Once logged in, locate the dashboard you wish to duplicate and click on it to select it: Screenshot of selecting the dashboard https://im...
How to Uninstall Grafana?
Uninstalling Grafana depends on your operating system and installation method. Here's how to remove Grafana on various systems. Uninstall on Linux (APT-Based Systems) First, stop the Grafana servic...
What Is A Prometheus Rule?
A Prometheus rule defines how Prometheus processes time-series data, primarily for recording precomputed results or triggering alerts. Rules are written in YAML and referenced in Prometheus' config...
How To Set Up And Secure Prometheus Metrics Endpoints
Exposing Prometheus metrics is essential for monitoring, but securing these endpoints is crucial to prevent unauthorized access and protect sensitive data. Here’s how you can set up and secure Prom...
What is a Prometheus target?
In Prometheus, a target is an endpoint or service that Prometheus monitors by scraping metrics. These metrics are exposed in a Prometheus-compatible format, typically over an HTTP or HTTPS endpoint...
What is the Prometheus Alert Lifecycle?
The Prometheus alert lifecycle describes the process alerts follow from creation to resolution, enabling effective monitoring and timely notifications. Prometheus generates alerts based on pre-defi...
What Is The Job Label In Prometheus?
The job label in Prometheus organizes monitored instances or endpoints into logical groups. It is automatically added to metrics scraped from targets defined in the same scrape configuration block ...
How to Monitor REST APIs with Prometheus
Prometheus is an effective tool for monitoring REST APIs by collecting and analyzing metrics. By integrating Prometheus with your application or external monitoring setup, you can track key perform...
How to install Prometheus and Grafana on Kubernetes with Helm
Installing Prometheus and Grafana on Kubernetes using Helm is a straightforward way to set up robust monitoring and visualization tools for your cluster. Helm charts simplify deployment, making con...
What are Prometheus Labels?
What are Prometheus labels? Prometheus labels are key-value pairs used to add metadata to metrics, making them more descriptive and allowing flexible queries. They enable Prometheus to organize, fi...
What Are The 4 Types Of Metrics In Prometheus
Prometheus supports four main metric types, each suited for specific use cases. These types help capture various aspects of system performance and behavior. 1. Counter A counter is a cumulative met...
Limitations of Prometheus Labels
Prometheus labels are a powerful feature used to add dimensional data to metrics. However, improper use or lack of understanding of their limitations can lead to inefficiencies, high resource consu...
What Is A Bucket In Prometheus?
In Prometheus, a bucket is a concept used in histograms to organize observed values into predefined ranges. Buckets are critical for tracking and analyzing the distribution of values, such as respo...
What is the Difference Between a Gauge and a Counter?
Gauges and counters are two core metric types in Prometheus. They serve different purposes and are used to track different kinds of data. 1. Counter A counter is a metric that only increases over t...
How To Manage Prometheus Counters
Prometheus counters are metrics that only increase or reset to zero. They are ideal for tracking values like requests, errors, or completed tasks. Managing counters effectively ensures accurate and...
How to Monitor Disk Usage in Kubernetes Persistent Volumes
Monitoring disk usage in Kubernetes persistent volumes is crucial for ensuring application stability. Kubernetes does not natively provide metrics for persistent volume usage, but you can use tools...
How to Add Custom HTTP Headers in Prometheus
Here is the content with only the indentation fixed: Adding custom HTTP headers in Prometheus is useful when interacting with a secured remote endpoint, such as when scraping metrics from services ...
Monitor Custom Kubernetes Pod Metrics Using Prometheus
Monitoring custom metrics in Kubernetes pods using Prometheus involves several steps, including instrumenting your application, exposing the metrics, configuring Prometheus to scrape these metrics,...
How to Use the Selected Period of Time in a Query?
In Prometheus and Grafana, you often want to analyze metrics over a selected period of time. Both platforms offer ways to utilize the selected time range in your queries, allowing you to view metri...
How to Add Https Url on Target Prometheus
To configure Prometheus to scrape metrics from an HTTPS endpoint, you need to specify the target URL with the https scheme in your prometheus.yml configuration file. Additionally, you may need to c...
Why There Are Both Counters and Gauges in Prometheus if Gauges Can Act as Counters?
In Prometheus, both Counters and Gauges are metric types, and while they may seem similar, they serve distinct purposes and are optimized for different use cases. Here’s an overview of the two, why...
Different Prometheus Scrape Url for Every Target
To configure Prometheus to use different scrape URLs for each target, you can leverage the relabel_configs section in your prometheus.yml file. This allows you to define specific scrape configurati...
Relabel Instance to Hostname in Prometheus
Relabeling in Prometheus is a powerful feature that allows you to modify labels in your metrics before they are stored. If you want to relabel the instance label to hostname, you can do this using ...
Prometheus Endpoint of All Available Metrics
In Prometheus, you can access the endpoint that lists all available metrics by querying the /metrics endpoint of your Prometheus server. Here’s how to access this information: Accessing the Metrics...
Getting Error "Get Http://localhost:9443/metrics: Dial Tcp 127.0.0.1:9443: Connect: Connection Refused"
The error message "Get dial tcp 127.0.0.1:9443: connect: connection refused" indicates that your application or service is trying to reach the Prometheus metrics endpoint at localhost:9443, but it...
What Does the "Instant" Checkbox in Grafana Graphs Based on Prometheus Do?
The "Instant" checkbox in Grafana graphs when using Prometheus as a data source is a feature that allows you to switch from a time series query to an instant query. Here's a breakdown of what this ...
Context Deadline Exceeded - Prometheus
The "Context Deadline Exceeded" error in Prometheus usually indicates that a query has timed out or that an operation has taken too long to complete. This can happen for several reasons, and unders...
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