{"id":13608,"date":"2026-01-07T09:48:06","date_gmt":"2026-01-07T04:18:06","guid":{"rendered":"https:\/\/www.youstable.com\/blog\/?p=13608"},"modified":"2026-01-07T09:48:08","modified_gmt":"2026-01-07T04:18:08","slug":"fix-load-balancer-on-linux","status":"publish","type":"post","link":"https:\/\/www.youstable.com\/blog\/fix-load-balancer-on-linux","title":{"rendered":"How to Fix Load Balancer on Linux Server in 2026? &#8211; Beginner Friendly Guide"},"content":{"rendered":"\n<p><strong>To fix a load balancer on a Linux server<\/strong>, verify the service status, confirm ports and firewall rules, test backend health checks, inspect logs for errors, and validate configuration syntax before reloading. <\/p>\n\n\n\n<p>Focus on connectivity <strong>(DNS, routing, SSL\/TLS)<\/strong>, session persistence, and resource limits. Roll changes safely with backups, and monitor metrics to confirm the issue is resolved.<\/p>\n\n\n\n<p>When your application slows down or returns intermittent <strong>502\/503 errors<\/strong>, the culprit is often the <strong>load balancer<\/strong>. In this guide, I\u2019ll show you exactly how to fix a load balancer on a Linux server, whether you use HAProxy, Nginx, Envoy, or LVS\/Keepalived.<\/p>\n\n\n\n<p>The steps are beginner friendly but technically precise, based on <strong>12+ years<\/strong> of hands on hosting experience.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"what-this-guide-covers-search-intent-troubleshooting-plus-how-to\"><strong>What This Guide Covers (Search Intent: Troubleshooting + How-to)<\/strong><\/h2>\n\n\n\n<p>The primary keyword is \u201cfix <a href=\"https:\/\/www.youstable.com\/blog\/configure-load-balancer-on-linux\/\">load balancer<\/a> on Linux server.\u201d You\u2019ll also learn Linux load balancing fundamentals, HAProxy troubleshooting, Nginx load balancer fixes, health checks, SSL termination, firewall tweaks, and high availability (VRRP). Follow the checklist, apply relevant fixes, and validate with tests and logs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"symptoms-that-your-linux-load-balancer-is-failing\"><strong>Symptoms That Your Linux Load Balancer is Failing<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Random 502\/503\/504 errors<\/strong> or \u201cupstream timed out.\u201d<\/li>\n\n\n\n<li>Uneven traffic distribution or a single backend getting overloaded.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.youstable.com\/blog\/activate-an-ssl-certificate\/\">SSL handshake failures or certificate<\/a> mismatch errors.<\/li>\n\n\n\n<li>High latency spikes during traffic bursts.<\/li>\n\n\n\n<li>Failover not happening in an HA pair (Keepalived\/VRRP issues).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"understand-your-stack-first\"><strong>Understand Your Stack First<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>HAProxy:<\/strong> Popular L4\/L7 load balancer and proxy with robust health checks.<\/li>\n\n\n\n<li><strong>Nginx:<\/strong> Web server and reverse proxy capable of L7 load balancing (HTTP\/stream).<\/li>\n\n\n\n<li><strong>Envoy\/Traefik:<\/strong> Modern L7 proxies with dynamic configuration and metrics.<\/li>\n\n\n\n<li><strong>LVS (IPVS) + Keepalived:<\/strong> Kernel-level load balancing with VRRP-based HA.<\/li>\n<\/ul>\n\n\n\n<p>Identify which one you\u2019re running and where configs live (e.g., \/etc\/haproxy\/haproxy.cfg, \/etc\/nginx\/nginx.conf, \/etc\/keepalived\/keepalived.conf). Knowing the component determines the precise fix.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-by-step-troubleshooting-checklist\"><strong>Step-by-Step Troubleshooting Checklist<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-1-verify-service-ports-and-processes\"><strong>Step 1: Verify Service, Ports, and Processes<\/strong><\/h3>\n\n\n\n<p>Confirm the load balancer is running, listening on the right ports (80\/443 or custom), and not blocked by the firewall.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo systemctl status haproxy nginx keepalived --no-pager\nsudo ss -lntp | grep -E ':80|:443|:8443'\nsudo journalctl -u haproxy -u nginx -u keepalived -b --no-pager | tail -n 50\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-2-dns-and-networking-sanity-checks\"><strong>Step 2: DNS and Networking Sanity Checks<\/strong><\/h3>\n\n\n\n<p>Ensure the domain resolves to your load balancer\u2019s IP, and the route is reachable from clients and from the LB to backends.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dig +short yourdomain.com\nping -c2 yourdomain.com\ncurl -I http:\/\/LB_IP\ncurl -kI https:\/\/LB_IP\nnc -zv LB_IP 80\nnc -zv LB_IP 443\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-3-backend-health-checks-failing\"><strong>Step 3: Backend Health Checks Failing<\/strong><\/h3>\n\n\n\n<p>If health checks fail, the LB will drain or mark backends as down. Verify backend reachability and the expected health endpoint (e.g., \/healthz returns 200).<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># From the LB host\ncurl -s -o \/dev\/null -w \"%{http_code}\\n\" http:\/\/BACKEND_IP:PORT\/healthz\ncurl -s -k -o \/dev\/null -w \"%{http_code}\\n\" https:\/\/BACKEND_IP:PORT\/healthz\n<\/code><\/pre>\n\n\n\n<p>Fix common causes: wrong port, misconfigured path, 403\/401 due to missing headers, TLS mismatch, or firewall rules on the backend.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-4-ssl-tls-and-certificates\"><strong>Step 4: SSL\/TLS and Certificates<\/strong><\/h3>\n\n\n\n<p>Handshake errors cause intermittent failures. Check certificate chain, SNI, and ciphers. If you terminate SSL at the LB, ensure the full chain is installed and the domain matches.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>openssl s_client -connect yourdomain.com:443 -servername yourdomain.com -showcerts &lt; \/dev\/null | openssl x509 -noout -subject -issuer -dates\n# Nginx test\nsudo nginx -t\n# HAProxy test\nsudo haproxy -c -f \/etc\/haproxy\/haproxy.cfg\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-5-session-persistence-sticky-sessions\"><strong>Step 5: Session Persistence (Sticky Sessions)<\/strong><\/h3>\n\n\n\n<p>Logins randomly drop? Enable cookie-based persistence (L7) or consistent hashing. Ensure all backends share session storage (or use stateless tokens) if persistence isn\u2019t guaranteed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-6-performance-bottlenecks-and-timeouts\"><strong>Step 6: Performance Bottlenecks and Timeouts<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.youstable.com\/blog\/how-to-increase-file-upload-size-in-cpanel\/\"><strong>Increase backlog and file<\/strong><\/a><strong> descriptors: <\/strong>net.core.somaxconn, fs.file-max, ulimit -n.<\/li>\n\n\n\n<li><strong>Adjust timeouts:<\/strong> connect, client_body, server, keepalive, and queue limits.<\/li>\n\n\n\n<li><strong>Check SYN backlog and ephemeral ports: <\/strong>net.ipv4.tcp_max_syn_backlog, net.ipv4.ip_local_port_range.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code># Quick tuning examples (test before adopting in production)\necho \"net.core.somaxconn=4096\" | sudo tee \/etc\/sysctl.d\/99-lb.conf\necho \"net.ipv4.tcp_max_syn_backlog=8192\" | sudo tee -a \/etc\/sysctl.d\/99-lb.conf\necho \"net.ipv4.ip_local_port_range=10240 65535\" | sudo tee -a \/etc\/sysctl.d\/99-lb.conf\nsudo sysctl --system\n\nulimit -n 100000   # set persistent limits via \/etc\/security\/limits.conf\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-7-high-availability-keepalived-vrrp\"><strong>Step 7: High Availability: Keepalived\/VRRP<\/strong><\/h3>\n\n\n\n<p>If a virtual IP (VIP) isn\u2019t failing over, verify VRRP state, priorities, and interface bindings. Confirm both LBs can bind the VIP and ARP announces are happening.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo systemctl status keepalived --no-pager\nip a | grep \"vip_address\"\nsudo journalctl -u keepalived -b --no-pager | tail -n 100\n<\/code><\/pre>\n\n\n\n<p><strong>Common fixes:<\/strong> identical unicast peer settings, matching auth, proper interface names, and net.ipv4.ip_nonlocal_bind=1 when needed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-8-logs-and-metrics-to-inspect\"><strong>Step 8: Logs and Metrics to Inspect<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>HAProxy:<\/strong> 503 errors, \u201cno server available,\u201d health check logs.<\/li>\n\n\n\n<li><strong>Nginx:<\/strong> upstream timed out, SSL errors, upstream connect failures.<\/li>\n\n\n\n<li><strong>Kernel: <\/strong>connection resets, TCP retransmissions.<\/li>\n\n\n\n<li><strong>System metrics:<\/strong> CPU steal, memory pressure, I\/O wait.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo tail -f \/var\/log\/haproxy.log \/var\/log\/nginx\/error.log\nsudo dmesg | tail\nsudo top | head -n 20\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"fixes-for-popular-linux-load-balancers\"><strong>Fixes for Popular Linux Load Balancers<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"haproxy-common-fix-patterns\"><strong>HAProxy: Common Fix Patterns<\/strong><\/h3>\n\n\n\n<p><strong>Issues:<\/strong> 503s, queueing, unhealthy backends, SSL errors. Validate config, timeouts, and health checks. Use stick-tables for persistence if needed.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># Validate config, then reload\nsudo haproxy -c -f \/etc\/haproxy\/haproxy.cfg\nsudo systemctl reload haproxy\n\n# Example: strengthen timeouts and health checks\n# \/etc\/haproxy\/haproxy.cfg\ndefaults\n  timeout connect 5s\n  timeout client  30s\n  timeout server  30s\n\nbackend app_pool\n  balance roundrobin\n  option httpchk GET \/healthz\n  http-check expect status 200\n  server app1 10.0.0.11:8080 check\n  server app2 10.0.0.12:8080 check\n\n# Sticky sessions\nbackend app_pool\n  cookie SRV insert indirect nocache\n  server app1 10.0.0.11:8080 check cookie app1\n  server app2 10.0.0.12:8080 check cookie app2\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"nginx-upstream-and-ssl-fixes\"><strong>Nginx: Upstream and SSL Fixes<\/strong><\/h3>\n\n\n\n<p><strong>Issues:<\/strong> upstream timed out, 502 Bad Gateway, mixed HTTP\/HTTPS, missing proxy headers. Validate syntax, increase buffers\/timeouts, and ensure the correct upstream protocol.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># Test, then reload\nsudo nginx -t\nsudo systemctl reload nginx\n\n# \/etc\/nginx\/conf.d\/lb.conf\nupstream backend_pool {\n    server 10.0.0.11:8080 max_fails=3 fail_timeout=10s;\n    server 10.0.0.12:8080 max_fails=3 fail_timeout=10s;\n    # ip_hash; # enable if you need sticky sessions\n}\n\nserver {\n    listen 80;\n    server_name yourdomain.com;\n\n    location \/ {\n        proxy_pass http:\/\/backend_pool;\n        proxy_set_header Host $host;\n        proxy_set_header X-Forwarded-For $remote_addr;\n        proxy_set_header X-Forwarded-Proto $scheme;\n\n        proxy_connect_timeout 5s;\n        proxy_read_timeout 30s;\n        proxy_send_timeout 30s;\n    }\n\n    location = \/healthz { return 200; }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"keepalived-plus-vrrp-reliable-failover\"><strong>Keepalived + VRRP: Reliable Failover<\/strong><\/h3>\n\n\n\n<p>Ensure both nodes use the same VRID, passwords (if used), and correct interface. If using unicast, list peers accurately. On some distros, enabling nonlocal bind helps with VIP binding.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \/etc\/keepalived\/keepalived.conf (example)\nvrrp_instance VI_1 {\n  state MASTER\n  interface eth0\n  virtual_router_id 51\n  priority 100\n  advert_int 1\n  authentication {\n    auth_type PASS\n    auth_pass strongpass\n  }\n  virtual_ipaddress {\n    10.0.0.10\/24 dev eth0\n  }\n  track_script {\n    chk_haproxy\n  }\n}\nvrrp_script chk_haproxy {\n  script \"pidof haproxy\"\n  interval 2\n  weight 10\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"security-and-firewall-considerations\"><strong>Security and Firewall Considerations<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Open required ports on firewalld\/iptables <strong>(80, 443, health-check ports)<\/strong>.<\/li>\n\n\n\n<li>Allow backend ports on the LB host and backend servers.<\/li>\n\n\n\n<li>If SELinux is enforcing, add proper contexts instead of disabling it.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code># firewalld\nsudo firewall-cmd --add-service=http --permanent\nsudo firewall-cmd --add-service=https --permanent\nsudo firewall-cmd --reload\n\n# iptables (legacy example)\nsudo iptables -I INPUT -p tcp --dport 80 -j ACCEPT\nsudo iptables -I INPUT -p tcp --dport 443 -j ACCEPT\nsudo service iptables save\n\n# SELinux port context (example for custom port 8443)\nsudo semanage port -a -t http_port_t -p tcp 8443\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"testing-validation-and-safe-rollbacks\"><strong>Testing, Validation, and Safe Rollbacks<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Always syntax-check before reload:<\/strong> haproxy -c -f, nginx -t.<\/li>\n\n\n\n<li><strong>Take a backup of configs:<\/strong> cp file file.bak.$(date +%F-%H%M).<\/li>\n\n\n\n<li>Reload, not restart, to avoid unnecessary downtime.<\/li>\n\n\n\n<li><strong>Run smoke tests:<\/strong> curl from multiple regions or ISPs.<\/li>\n\n\n\n<li>Monitor error rates, latency, and backend health after changes.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>curl -s -o \/dev\/null -w \"%{http_code} %{time_total}\\n\" -H \"Host: yourdomain.com\" http:\/\/LB_IP\/\nab -n 500 -c 50 http:\/\/yourdomain.com\/    # or use wrk\/hey for modern load tests\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"proactive-hardening-and-observability\"><strong>Proactive Hardening and Observability<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Enable metrics:<\/strong> HAProxy Prometheus exporter, Nginx stub_status\/Exporter.<\/li>\n\n\n\n<li>Centralize logs with structured fields (request_time, upstream_status).<\/li>\n\n\n\n<li>Autoscale backends or add nodes when queue times grow.<\/li>\n\n\n\n<li>Implement canary deployments and blue\/green for safer rollouts.<\/li>\n\n\n\n<li>Schedule regular certificate renewals and config audits.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"when-to-scale-vs-fix\"><strong>When to Scale vs. Fix<\/strong><\/h2>\n\n\n\n<p>If the configuration is correct but latency and 5xx errors persist under load, you likely need to scale:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Scale out:<\/strong> add more backend nodes or a second LB layer.<\/li>\n\n\n\n<li><strong>Scale up:<\/strong> increase CPU\/RAM or move to optimized instances.<\/li>\n\n\n\n<li>Use anycast or a cloud load balancer for global distribution.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"real-world-scenarios-and-quick-resolutions\"><strong>Real-World Scenarios and Quick Resolutions<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sudden 503 spike on HAProxy:<\/strong> Backend health endpoint started returning 401 after an app release. Fix by allowing the LB IP or adding the required header\/token to httpchk.<\/li>\n\n\n\n<li><strong>Nginx upstream timed out:<\/strong> Backends slowed under traffic spikes. Fix by increasing proxy_read_timeout to 60s temporarily and scaling the app nodes.<\/li>\n\n\n\n<li><strong>VRRP failover stuck:<\/strong> Secondary had wrong interface name after OS update. Fix by correcting the interface and reloading Keepalived.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"soft-recommendation-expert-help-from-youstable\"><strong>Soft Recommendation: Expert Help from YouStable<\/strong><\/h2>\n\n\n\n<p>If you\u2019d rather not debug production at 2 AM, <a href=\"https:\/\/www.youstable.com\/blog\/benefits-of-fully-managed-dedicated-server\/\">YouStable\u2019s managed hosting<\/a> team can design, deploy, and monitor Linux load balancers with HAProxy\/Nginx\/Keepalived, implement observability, and maintain SLAs. We tailor health checks, SSL, and scaling policies to your app so incidents are rare and recovery is fast.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"faqs\"><strong>FAQ&#8217;s<\/strong><\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1765875608792\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \" class=\"rank-math-question \" id=\"1-how-do-i-fix-502-bad-gateway-on-a-linux-load-balancer\">1. <strong>How do I fix 502 Bad Gateway on a Linux load balancer?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Check that backends are reachable and listening, verify upstream protocol (HTTP vs HTTPS), and inspect timeouts. For Nginx, review error.log for \u201cupstream prematurely closed connection\u201d or \u201cupstream timed out.\u201d For HAProxy, look for 502\/503 causes in haproxy.log. Validate configs with nginx -t or haproxy -c -f before reloading.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1765875616922\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \" class=\"rank-math-question \" id=\"2-why-are-my-health-checks-failing-even-though-the-app-is-up\">2. <strong>Why are my health checks failing even though the app is up?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Common reasons: wrong health URL, authentication required, redirects (3xx), TLS mismatch (HTTP check to HTTPS backend), or firewall blocks. Ensure the endpoint returns 200 OK quickly and that the LB sends any required headers or tokens.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1765875625259\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \" class=\"rank-math-question \" id=\"3-how-can-i-enable-sticky-sessions-on-haproxy-or-nginx\">3. <strong>How can I enable sticky sessions on HAProxy or Nginx?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>In HAProxy, use cookie-based persistence (cookie SRV insert and per-server cookie values). In Nginx, enable ip_hash for basic stickiness or use a consistent-hash module. Ensure session data is shared or stateless to prevent data loss during failover.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1765875631769\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \" class=\"rank-math-question \" id=\"4-what-firewall-rules-are-needed-for-a-linux-load-balancer\">4. <strong>What firewall rules are needed for a Linux load balancer?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Allow inbound 80\/443 on the LB, allow egress from LB to backend ports (e.g., 8080\/8443), and permit health-check ports if separate. On CentOS\/RHEL use firewall-cmd; on Ubuntu\/Debian use ufw or iptables. Don\u2019t forget SELinux port contexts for custom ports.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1765875639743\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \" class=\"rank-math-question \" id=\"5-how-do-i-safely-apply-changes-without-downtime\">5. <strong>How do I safely apply changes without downtime?<\/strong><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Backup configs, validate syntax (nginx -t, haproxy -c -f), then reload the service (systemctl reload). For major changes, drain one LB node in an HA pair, apply changes, validate, then switch. Monitor metrics and logs immediately after deploy.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>To fix a load balancer on a Linux server, verify the service status, confirm ports and firewall rules, test backend [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":17165,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[350],"tags":[],"class_list":["post-13608","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledgebase"],"acf":[],"featured_image_src":"https:\/\/www.youstable.com\/blog\/wp-content\/uploads\/2025\/12\/How-to-Fix-Load-Balancer-on-Linux-Server.jpg","author_info":{"display_name":"Sanjeet Chauhan","author_link":"https:\/\/www.youstable.com\/blog\/author\/sanjeet"},"_links":{"self":[{"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/posts\/13608","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/users\/21"}],"replies":[{"embeddable":true,"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/comments?post=13608"}],"version-history":[{"count":6,"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/posts\/13608\/revisions"}],"predecessor-version":[{"id":17167,"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/posts\/13608\/revisions\/17167"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/media\/17165"}],"wp:attachment":[{"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/media?parent=13608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/categories?post=13608"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.youstable.com\/blog\/wp-json\/wp\/v2\/tags?post=13608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}