Expose HAProxy Metrics to Prometheus via Exporter
HAProxy itself can expose metrics, but Prometheus needs an exporter to scrape them. Let's get HAProxy metrics into Prometheus
Haproxy Articles
47 articles
Manage HAProxy Connection Queues to Prevent Request Loss
HAProxy doesn't just drop requests when its backend is overloaded; it actively manages them in queues, and understanding how it queues is the key to pre.
Rate-Limit Abusive Traffic in HAProxy with Stick Tables
HAProxy doesn't just count requests; it can dynamically punish clients that go too far, and it does it by silently tracking them in memory.
Redirect HTTP to HTTPS and URLs with HAProxy Rules
HAProxy can enforce HTTPS by redirecting all HTTP traffic to HTTPS, and it can also handle specific URL rewrites and redirects.
Reload HAProxy Configuration Without Dropping Connections
Reloading HAProxy configuration without dropping connections is surprisingly easy, but most people overcomplicate it by thinking they need to restart th.
Control HAProxy at Runtime with the Admin Socket API
Control HAProxy at Runtime with the Admin Socket API — practical guide covering haproxy setup, configuration, and troubleshooting with real-world examples.
Adjust Server Weights and Drain Connections in HAProxy
HAProxy's server weights aren't just about directing more traffic to faster servers; they're a dynamic, real-time dial that can prevent outages and opti.
Protect HAProxy Against Slowloris and Slow HTTP Attacks
HAProxy can actually benefit from being a bit "slow" itself to gracefully handle slow HTTP attacks. Let's watch HAProxy in action, serving up a simulate.
Delegate Request Filtering to External Agents with HAProxy SPOE
HAProxy can offload request filtering to external agents, allowing for complex and dynamic filtering logic without bogging down the HAProxy process itse.
Pass TLS Traffic Directly to Backends with HAProxy SSL Passthrough
HAProxy can terminate TLS and then re-encrypt traffic to your backends, or it can just pass the encrypted TLS traffic straight through to the backends w.
Terminate TLS Connections at HAProxy and Forward HTTP
Terminate TLS Connections at HAProxy and Forward HTTP — practical guide covering haproxy setup, configuration, and troubleshooting with real-world examp...
Enable the HAProxy Statistics Page for Live Monitoring
HAProxy's statistics page is a powerful tool for live monitoring, but it's not enabled by default and requires a specific configuration block.
Implement Sticky Sessions and Rate Limiting with HAProxy Stick Tables
Implement Sticky Sessions and Rate Limiting with HAProxy Stick Tables — practical guide covering haproxy setup, configuration, and troubleshooting with ...
Proxy Raw TCP Connections with HAProxy TCP Mode
HAProxy in TCP mode doesn't actually proxy the TCP connection; it terminates the client's connection and establishes a new one to the backend.
Manage HAProxy Configuration with the Terraform Provider
Terraform can manage HAProxy configurations, but it doesn't actually run HAProxy for you; it generates HAProxy configuration files and can then tell an .
Tune Linux Kernel Parameters for Maximum HAProxy Performance
Tuning Linux kernel parameters for HAProxy performance is less about tweaking random knobs and more about understanding how the kernel manages network s.
Upgrade HAProxy to a New Version with Zero Downtime
HAProxy's hot-reloading feature is the magic trick that lets you upgrade without anyone noticing. Let's see it in action
Route Traffic to Backends with HAProxy ACLs
HAProxy ACLs let you route traffic to different backend servers based on incredibly granular criteria, but the most surprising thing is how often they'r.
Set Up HAProxy Active-Passive Failover with Keepalived
HAProxy active-passive failover with Keepalived isn't about having two HAProxy instances ready to take over; it's about one instance being the sole acti.
Configure HAProxy Agent Checks for Custom Health Signals
HAProxy agent checks let you feed custom health signals into the load balancer, enabling it to make smarter routing decisions than just basic TCP or HTT.
Automate HAProxy Configuration Management with Ansible
Automating HAProxy configuration management with Ansible is less about writing playbooks and more about understanding how HAProxy's dynamic nature clash.
Configure HAProxy Caching to Reduce Backend Load
HAProxy doesn't just serve requests; it can actively prevent them from ever reaching your backend servers, making your application feel faster and your .
Enable gzip Compression in HAProxy for HTTP Responses
HAProxy doesn't compress responses by default, which means you're sending uncompressed data to clients, burning bandwidth and slowing down page loads.
HAProxy Configuration Guide: Frontend, Backend, and Listen
HAProxy can make your application unreachable if you configure it to listen on an IP address that doesn't exist on any of your network interfaces.
Add CORS Headers to Responses with HAProxy
HAProxy doesn't actually add CORS headers; it rewrites existing headers to include CORS information, and it does this by inspecting the response before .
Configure HAProxy Dynamically via the Data Plane API
HAProxy can update its configuration on the fly without dropping a single connection. Let's say you've got a running HAProxy instance serving traffic, a.
Detect Device Types in HAProxy with Device Atlas Plugin
The most surprising truth about device detection is that it's fundamentally a probabilistic game, not a deterministic one.
Run HAProxy in Docker with Dynamic Configuration
HAProxy running in Docker with dynamic configuration is a game-changer, and the most surprising thing is how little state it actually needs to maintain .
Add and Remove Backend Servers at Runtime in HAProxy
HAProxy's configuration can be dynamically updated without restarting the service, a feat often achieved by targeting specific backend server entries.
Configure HAProxy Frontends, Backends, and Listen Sections
HAProxy doesn't actually have "listen sections"; it uses a combined frontend and backend structure to define how it accepts connections and where it sen.
Load Balance gRPC Traffic with HAProxy
Load Balance gRPC Traffic with HAProxy — practical guide covering haproxy setup, configuration, and troubleshooting with real-world examples.
Configure Active and Passive Health Checks in HAProxy
HAProxy health checks aren't just about checking if a server is "up" or "down"; they're a sophisticated negotiation between HAProxy and your backend ser.
Set Up HAProxy High Availability with Pacemaker and Corosync
Pacemaker and Corosync don't actually manage HAProxy itself; they manage the virtual IP address that HAProxy listens on, ensuring it's always active on .
Enable HTTP/2 Protocol Support in HAProxy
Enable HTTP/2 Protocol Support in HAProxy — HAProxy doesn't just enable HTTP/2; it rewrites your HTTP/1.1 requests into HTTP/2 for the backend, .
Allow and Block IP Addresses in HAProxy
HAProxy doesn't actually "allow" or "block" IP addresses; it selectively forwards or drops traffic based on rules you define, acting as a gatekeeper rat.
Configure HTTP Keep-Alive in HAProxy for Persistent Connections
HAProxy's HTTP Keep-Alive doesn't actually make connections persistent for the client; it makes them persistent for the server.
Configure a Virtual IP with Keepalived for HAProxy HA
A Virtual IP VIP address, managed by keepalived, can seem like magic for achieving high availability HA for your haproxy load balancer.
Use HAProxy as a Kubernetes Ingress Controller
HAProxy can act as a Kubernetes Ingress controller, but it's not a built-in solution and requires a bit of manual setup.
Renew Let's Encrypt Certificates Automatically with HAProxy
Let's Encrypt certificates are designed to be short-lived, making manual renewal a constant chore. HAProxy, a widely used TCP/HTTP load balancer, can be.
HAProxy Load Balancing Algorithms: Round-Robin, Least-Conn, Source
The most surprising thing about HAProxy load balancing is that "least connections" doesn't actually mean the server with the fewest active connections.
Write Custom HAProxy Log Formats for Structured Logging
HAProxy's default log format is a relic from a time when logs were primarily for human eyes, meaning you're probably wrestling with unstructured text wh.
Send HAProxy Access Logs to rsyslog
Send HAProxy Access Logs to rsyslog — HAProxy access logs don't just appear in /var/log/haproxy.log by default; you have to actively tell .
Extend HAProxy with Lua Scripts for Custom Logic
HAProxy's Lua scripting allows you to inject arbitrary logic into request and response processing, effectively extending its capabilities beyond its cor.
Tune HAProxy maxconn to Prevent Connection Overload
HAProxy's maxconn setting, often perceived as a simple connection limit, fundamentally dictates how many concurrent connections a specific frontend or b.
Configure Mutual TLS in HAProxy for Client Authentication
Mutual TLS is surprisingly less about security and more about identity management for your services. Let's see HAProxy handle client authentication usin.
Tune HAProxy nbproc and nbthread for Multi-Core Performance
HAProxy's nbproc and nbthread settings don't just distribute work; they fundamentally change how HAProxy handles network connections, often leading to p.
HAProxy Production Hardening: Security and Performance Checklist
HAProxy's true power lies not in its speed, but in its ability to abstract complexity, making your entire application stack appear faster and more resil.