High-Availability Proxy (HAProxy) is a free and open-source utility used for load balancing in the cloud and also doubles up as a proxy server for HTTP and TCP-based applications.
Here is our list of the best tools to monitor the health of HAProxy:
- AppOptics Application Performance Monitoring – FREE TRIAL One of the most popular tools for HAProxy monitoring as it balances system performance while performing thorough load balancer monitoring. Start a 30-day free trial.
- Site24x7 – FREE TRIAL Comes with capabilities to configure the HAProxy plugin so you can collect and analyze its metrics for a comprehensive understanding of its performance. Start a 30-day free trial.
- AppOptics Librato – FREE TRIAL Built to enable easy monitoring of HAProxy servers by monitoring their key metrics. Start a 30-day free trial.
- ManageEngine Applications Manager – FREE TRIAL This tool's HAProxy monitor auto-discovers the metrics of HAProxy and tracks the performance and the maximum number of connections that HAProxy can handle. Start a 30-day free trial.
- Datadog Streamlined tool that stores, visualizes, and correlates metrics from HAProxy to give meaningful insights about the performance of your website.
- NewRelic This tool collects metrics from HAProxy and visualizes its performance with respect to your entire organization.
- Dynatrace Provides socket and HTTP monitoring modes for collecting data from HAProxy and analyzing it.
- Opsview This tool's Opspack monitors all HAProxy servers and checks their metrics such as connections, requests, responses, incoming and outgoing bytes, and sessions.
- Zabbix Free and open-source tool for monitoring the different metrics of HAProxy servers.
In particular, this tool is used for websites that experience high traffic volumes and is the driving tool behind many of the world's most popular websites. Its performance and efficiency have also made it the hands-down choice of the load balancer and it is shipped with most Linux distributions as well.
HAProxy is easy to deploy with existing architectures and doesn't require big changes to your current setup. At the same time, it is risk-free and never exposes the underlying web servers to public networks like the Internet. This is also why it is deployed extensively across cloud applications today.
From the above discussion, it's clear that HAProxy is integral for the availability and performance of your website, especially if it is experiencing a surge in web traffic. This also means that HAProxy is a critical asset that must be monitored at all times to ensure that it continues its high performance.
However monitoring the HAProxy manually is not easy, and this is why you need automated tools that will constantly look at the health and availability of HAProxy and report any issues at the earliest. Let's now take a deeper look at the capabilities of each of these tools.
The Best Tools to Monitor HAProxy Health
Our methodology for selecting HAProxy monitoring tools and software
We reviewed various HAProxy health monitors and analyzed the options based on the following criteria:
- Support for various cloud environments
- Proxy and load balancing options
- Ease of use and deployment
- A facility to analyze network performance over time
- Graphical interpretation of data, such as charts and graphs
- A free trial period, a demo, or a money-back guarantee for a no-risk assessment
- A good price that reflects value for money when compared to the functions offered
AppOptics Application Performance Monitorings by SolarWinds is a comprehensive monitoring tool that balances system performance with in-depth monitoring of the HAProxy servers to give you the best of both worlds.
The features of AppOptics are as follows.
- Provides deep insights into the overall system performance
- Troubleshoots errors and slowdowns
- Constantly checks the health of HAProxy and, through it, helps to identify potential problems early
- Tracks the count of clients using your proxy servers at any time
- Monitors the response time and sends alerts in case of potential slowdowns
- Generates actionable insights on the five crucial load-balancing metrics: latency, target host health, rejected connections, connection count, and 5xx status codes
- Helps to identify and address the root cause of a system performance issue
- Provides the visibility required to resolve slow performance issues
- Allows you to create out-of-the-box dashboards to view information just the way you want
- Generates clear graphs to identify problems
- Integrates with SolarWinds Loggly for analyzing log traces
- Offers great visualizations reflecting live and historical health metrics and resource consumption
- Is easily scalable cloud service
- Tracks all major resources focusing on over 180 different metrics
- Can monitor Docker, Azure, and Hyper-V platforms, offering more flexibility than competing options
- Would like to see a longer trial period
Site24x7 HAProxy Monitoring comes with capabilities to configure the HAProxy plugin so that you can evaluate its performance based on the metrics collected from it.
The features of Site24x7's HAProxy Monitoring are:
- Provides in-depth visibility into the performance, availability, and usage of HAProxy servers
- Records the total number of errors that occurred when requests were made to the servers
- Counts the total number of bytes received and sent by frontend proxies
- Supports Python version 2.7 and greater
- Generates performance charts on your HAProxy servers
- Helps to quickly identify issues in the operation and performance of HAProxy servers
- Ensures the optimal performance of HAProxy servers
- One of the most holistic monitoring tools available, supporting networks, infrastructure, and real user monitoring in a single platform
- Uses real-time data to discover devices and build charts, network maps, and inventory reports
- Is one of the most user-friendly network monitoring tools available
- User monitoring can help bridge the gap between technical issues, user behavior, and business metrics
- Supports a freeware version for testing
- Is a very detailed platform that will require time to fully learn all of its features and options
Site24x7 comes with many pricing options to meet your business needs. Here's a snapshot of the plans.
- Website monitoring
- Starter – $9/month
- PRO – $35/month
- Classic – $89/month
- Enterprise – $225/month
- Infrastructure. It starts at $9 per month. You can include add-ons at extra cost.
- APM. It starts at $35/month, and add-ons cost extra.
- PRO – $35/month
- Classic – $89/month
- Elite – $225/month
- Enterprise – $449/month
- MSP. Starts at $45/month and add-ons cost extra.
Start with a 30-day free trial.
AppOptics Librato by SolarWinds is a tool that's built and optimized for monitoring HAProxy servers and their metrics.
The features of SolarWinds Librato are:
- It is simple to set up
- Monitors the frontend and backend metrics
- Comes with a preconfigured HAProxy dashboard
- Spots errors as and when they occur
- It has a responsive UI that displays the metrics of HAProxy servers in real-time
- Provides quick visibility into the performance of HAProxy servers
- In addition, its powerful dashboards support fast troubleshooting
- Tracks the following metrics:
- HTTP response codes
- Request rate
- Denied requests
- Sessions rate
- Request, response, and connection errors.
- Offers real-time monitoring and alerting into Docker environments
- Integration is simple through a quick agent install
- Can track performance changes over time
- Would like to see a 30-day trial
ManageEngine Applications Manager comes with advanced HAProxy monitoring capabilities that ensure that your HAProxy handles only what it is capable of. In case of extra load, it sends an alert to the concerned people.
The salient features of Applications Manager are:
- Automatically discovers your entire service topology
- Tracks the maximum number of connections that HAProxy can handle
- Monitors the number of open pipes to help your HAProxy run optimally
- Collects frontend details such as client connections and requests to provide information about the client's interactions with the load balancer
- Tracks the session creation rate to identify any traffic spikes
- Checks the number of request denials due to security restrictions and alerts if these numbers are higher than the established thresholds
- Measure the communication between HAProxy and backend servers to identify and fix issues quickly
- Tracks the retry rate to make it easy to drill down to the cause of errors
- Checks the average response time to measure the latency of your load-balancers
- Generates extensive reports to help you respond quickly to outages as soon as they occur
- Helps to identify and fix performance issues quickly
- Offers on-premise and cloud deployment options, giving companies more choices for install
- Can highlight interdependencies between applications to map out how performance issues can impact businesses operations
- Offers log monitoring to track metrics like memory usage, disk IO, and cache status, providing a holistic view into your database health
- Can automatically detect databases, server hardware, and devices in real-time
- Can take time to fully explore all features and options available
Datadog is a streamlined tool that stores, visualizes, and correlates your HAProxy metrics with the rest of your infrastructure to give a comprehensive idea of your website's performance.
The features of Datadog concerning HAProxy monitoring are:
- Monitors the front-end metrics such as connections and client requests, the backend metrics such as availability and the health of backend servers, and health metrics that reflect the state of your HAProxy setup
- Correlates all the metrics with your infrastructure to give a comprehensive understanding of your infrastructure
- Helps to identify potential errors and vulnerabilities quickly
- Provides visibility into the health and performance of HAProxy, including metrics such as session utilization, latency, denials, and queue length and time
- Creates a quick and human-readable view of HAProxy's performance
- Enables you to use both the interactive and non-interactive modes to collect metrics
- Provides the flexibility to configure your Datadog agent to monitor just what you want
- Generates insightful graphs and reports
- Enables you to create a custom HAProxy dashboard
- Automatically collects HAProxy logs and analyzes them
- Allows you to filter the content on logs to find what you want
- Enables you to set up custom alerts
- It can monitor individual hosts, containers, processes, services, and more
- The outlier detection feature makes recommendations on the essential metrics
- Easy-to-use customizable dashboards
- Cloud-based SaaS product allows monitoring with no server deployments or onboarding costs
- Can monitor both internally and externally giving network admins a holistic view of network performance and accessibility
- Supports auto-discovery that builds network topology maps on the fly
- Changes made to the network are reflected in near real-time
- Allows businesses to scale their monitoring efforts reliably through flexible pricing options
- Would like to see a longer trial period for testing
Datadog offers many pricing plans and tiers to enable you to customize the offering as per your business needs.
- Infrastructure – Monitors the tech stack and apps at any scale
- Free – Up to five hosts and a one-day metric retainer
- Pro – $15/day/host. 600+ integrations and retains metrics for 15 months
- Enterprise – $23/day/host. Advanced features such as machine learning-based alerts
- Log management – Analyzes and explores log data
- Ingest – $0.10 per ingested GB
- Retain – $1.70 per million log events
- APM and Continuous Profiler – Performs end-to-end distributed tracing
- APM – starts at $31/host/month
- APM and Continuous Profiler – starts at $40/host/month
- Database Monitoring – Identifies slow-performing queries and optimizes application performance. Starts at $70/database host/month.
- Accurate User Monitoring – Measures end-to-end user experience on web and mobile applications. It starts at $15/10k sessions/month.
- Incident Management – A fully integrated incident management plan. Starts at $20/user/month
- Network Monitoring – Monitors devices and traffic for complete visibility.
- Network performance monitoring – Starts at $5/host/month
- Network device monitoring – Starts at $7/device/month
Click here for a free trial.
NewRelic‘s HAProxy integration plugin collects metrics from the HAProxy server, aggregates it with your entire infrastructure, and gives you a 360-degree view of the overall performance.
The features of NewRelic's integration plugin are:
- Aggregates and visualizes critical performance metrics of the HAProxy server
- Compatible with HAProxy versions 1.3 to 2.2
- It comes with a guided install that creates a customized CLI command for your environment
- Discovers other applications and log sources in your environment and recommends which ones you should instrument
- Integrations are also available in Tarball format
- It can be enabled via Kubernetes, Amazon ECS, or on-host
- Collects both inventory and metrics information
- Allows you to use labels to add key/value attributes to your metrics
- The integration is open source, so you can customize the code to meet specific requirements
- Certified for Microsoft Azure monitoring
- Uses anomaly detection to highlight abnormal behavior in your Azure environment
- Uses simple but intuitive admin dashboards
- Better suited for small to medium-sized Azure networks
Dynatrace‘s HAProxy monitoring collects metrics from HAProxy and analyzes them to provide insights. It supports socket and HTTP monitoring mode.
The features of Dynatrace's HAProxy monitoring are:
- The socket mode enables you to use all the CPU cores
- In addition, it automatically detects multiple HAProxy processes, sockets, and bindings
- Supports global and local configurations
- Automatically activates HAProxy monitoring in all hosts
- Monitors all HAProxy components
- Quickly detects anomalies and, accordingly, sends notifications
- Supports HAProxy running inside Docker containers
- Highly visual and customizable dashboards, excellent for enterprise NOCs
- Operates in the cloud, allowing it to be platform-independent
- Leverages AI to provide baseline analysis and detect user behavior anomalies
- Designed specifically for large networks, smaller organizations may find the product overwhelming
Dynatrace comes in six flavors, and they are:
- Full-stack monitoring – $69/month for an 8-GB host
- Infrastructure monitoring – $21/month for an 8-GB host
- Digital experience monitoring – $11k/month for 10k annual Digital Experience Monitoring units.
- Application security – $10/month for an 8-GB host
- Open ingestion – $25/month for 100K Davis Data units
- Cloud automation – $0.10/cloud automation unit
Click here for a free trial.
OpsView‘s HAProxy Opspack monitors all the metrics needed for the efficient running of an HAProxy stack. Specifically, it checks for incoming and outgoing bytes, connections, requests, responses, and sessions of HAProxy servers.
The HAProxy Opspack checks the following metrics.
- Checks the incoming and outgoing bytes
- The time (in ms) that it takes for a session to connect
- Current number in the queue
- The number of denied connections, sessions, error responses, and requests
- The time spent in the queue
- The number of requests and sessions per second
- Percentage of used sessions
- The number of re-dispatched and retried warnings
- Supports multiple forms of monitoring (HAProxy, J-Flow, etc)
- Clean easy to use interface
- Highly flexible and customizable interface
- Supports a free and paid version
- Requires Opsview Monitor to monitor J-Flow, not a standalone tool
Zabbix is a free and open-source monitoring solution for HAProxy servers. It monitors different aspects of these servers to ensure their high availability and performance.
The features of Zaabix's HAProxy server monitoring are:
- Requires no external scripts
- Collects all the metrics needed in one go for greater efficiency
- Supports HTTPS and redirects
- Handles frontend, backend, and server discoveries
- Collects HAProxy's version, uptime, service stats, service response time, backend and frontend metrics, status, response time, error connections, response errors, unassigned requests, time in queue, re-dispatched requests per second, incoming and outgoing traffic, weight, queue metrics, and more
- Allows you to set triggers and threshold values
- Open-source transparent tool
- Uses both SNMP and ICMP for a broader monitoring range
- Can detect new devices and configuration changes immediately
- Offers useful templates for quick insights
- Robust notification system supports SMS, email, custom script, and webhook
- Would like to see more alerting options
Zabbix is FREE, Click here to download.
To conclude, HAProxy is a popular load balancing server that powers some of the most popular high-traffic websites. This free and open-source tool also doubles up as HTTP and proxy servers when needed.
Since this is a critical resource of organizations, it requires constant monitoring, and the tools that we have described earlier can handle this for you. Precisely visualize, both the SolarWinds tools can extensively monitor the metrics you need to ensure that the HAProxy servers are in good health and perform optimally at all times.
HAProxy Health Monitoring Tools FAQs
How does HAProxy monitor server health?
HAProxy can monitor server health using several methods, including checking TCP or HTTP responses, monitoring server response times, and checking server availability.
What are some common server health metrics monitored by HAProxy?
Common server health metrics monitored by HAProxy include server response time, error rate, and availability.
How does HAProxy react to unhealthy servers?
HAProxy can react to unhealthy servers by removing them from the load balancing rotation or by directing traffic to healthy servers.
What are some common causes of unhealthy servers in HAProxy?
Common causes of unhealthy servers in HAProxy include server overload, network connectivity issues, and server hardware failures.
How can I troubleshoot HAProxy health issues?
To troubleshoot HAProxy health issues, you can use HAProxy logging and monitoring tools to identify unhealthy servers and analyze server response times and error rates. You can also use server and network monitoring tools to identify potential hardware or network issues.
How can I optimize HAProxy health?
To optimize HAProxy health, you can use techniques such as load balancing algorithms, server weighting, and session persistence to ensure that traffic is directed to healthy
What are some best practices for maintaining HAProxy health?
Best practices for maintaining HAProxy health include regularly monitoring server health metrics, configuring load balancing algorithms and weighting, setting up alerts and notifications, and performing regular maintenance and updates.