https://pingrobot.io/blogUptime monitoring guides https://pingrobot.io/blog/uptime-monitoring-apihttps://pingrobot.io/blog/uptime-monitoring-apiTue, 20 Oct 2026 09:00:00 GMTAutomate uptime monitoring with an API - create monitors on signup, silence checks during deploys, feed a dashboard and sync monitors from a list. https://pingrobot.io/blog/scheduled-maintenance-without-false-alertshttps://pingrobot.io/blog/scheduled-maintenance-without-false-alertsTue, 20 Oct 2026 09:00:00 GMTHow to pause uptime monitoring during maintenance - one-off and recurring windows, time zones, SLA impact, status page notices and a deploy script. https://pingrobot.io/blog/err-ssl-protocol-errorhttps://pingrobot.io/blog/err-ssl-protocol-errorTue, 20 Oct 2026 09:00:00 GMTERR_SSL_PROTOCOL_ERROR means the TLS handshake broke before any certificate check. Causes and fixes, tested with openssl s_client, curl and nmap. https://pingrobot.io/blog/err-connection-refusedhttps://pingrobot.io/blog/err-connection-refusedTue, 20 Oct 2026 09:00:00 GMTERR_CONNECTION_REFUSED means nothing accepted the connection on that port. What it means at the TCP level, and fixes with curl, ss and firewalls. https://pingrobot.io/blog/check-uptime-from-claude-with-mcphttps://pingrobot.io/blog/check-uptime-from-claude-with-mcpTue, 20 Oct 2026 09:00:00 GMTConnect an uptime monitoring MCP server to Claude Code, Claude Desktop, Cursor or VS Code and ask what is down, why, and what changed - safely. https://pingrobot.io/blog/what-is-a-status-pagehttps://pingrobot.io/blog/what-is-a-status-pageSat, 17 Oct 2026 09:00:00 GMTA status page shows whether a service is working and lists past incidents. Learn public vs private pages, which components to list and how to word updates. https://pingrobot.io/blog/status-page-exampleshttps://pingrobot.io/blog/status-page-examplesSat, 17 Oct 2026 09:00:00 GMTWhat good status pages share: clear components, 90-day history bars, the current incident on top, maintenance notices, subscriptions and time zones. https://pingrobot.io/blog/status-page-custom-domainhttps://pingrobot.io/blog/status-page-custom-domainSat, 17 Oct 2026 09:00:00 GMTPoint status.yourcompany.com at a hosted status page with a CNAME record. Why a subdomain, Cloudflare proxy settings, certificates, CAA and common errors. https://pingrobot.io/blog/post-mortem-templatehttps://pingrobot.io/blog/post-mortem-templateSat, 17 Oct 2026 09:00:00 GMTA blameless incident post-mortem template with every section explained, a filled-in example, and tips for running the review meeting and following up. https://pingrobot.io/blog/incident-communication-templateshttps://pingrobot.io/blog/incident-communication-templatesSat, 17 Oct 2026 09:00:00 GMTCopy-paste outage messages for investigating, identified, monitoring, resolved, scheduled maintenance and follow-up, for status pages, email and social. https://pingrobot.io/blog/dns-monitoringhttps://pingrobot.io/blog/dns-monitoringSat, 17 Oct 2026 09:00:00 GMTWhich DNS records to monitor (A, CNAME, MX, SPF, DMARC, NS, CAA), how DNS outages really happen, how TTLs delay fixes, and dig commands to check them. https://pingrobot.io/blog/best-uptime-monitoring-toolshttps://pingrobot.io/blog/best-uptime-monitoring-toolsSat, 17 Oct 2026 09:00:00 GMTUptimeRobot, Better Stack, Pingdom, StatusCake, HetrixTools, Cronitor, Uptime Kuma, Checkly and PingRobot compared on free plans, prices and strengths. https://pingrobot.io/blog/api-monitoring-json-assertionshttps://pingrobot.io/blog/api-monitoring-json-assertionsSat, 17 Oct 2026 09:00:00 GMTWhat to assert on an API or health response, how JSON paths like $.data[0].id work, real examples and the pitfalls that cause noisy or useless checks. https://pingrobot.io/blog/alert-fatiguehttps://pingrobot.io/blog/alert-fatigueSat, 17 Oct 2026 09:00:00 GMTCut uptime alert noise without missing outages - second-location confirmation, alert delays, reminders, maintenance windows, routing and sane timeouts. https://pingrobot.io/blog/what-happens-when-ssl-certificate-expireshttps://pingrobot.io/blog/what-happens-when-ssl-certificate-expiresFri, 16 Oct 2026 09:00:00 GMTAn expired SSL certificate triggers browser warnings and breaks APIs, webhooks and mobile apps. What users see, how to fix it fast and how to prevent it. https://pingrobot.io/blog/what-happens-when-a-domain-expireshttps://pingrobot.io/blog/what-happens-when-a-domain-expiresFri, 16 Oct 2026 09:00:00 GMTWhen a domain expires, the site and email stop working, then come renewal grace, a 30-day redemption period and pending delete. Timelines and prevention. https://pingrobot.io/blog/ssl-certificate-monitoringhttps://pingrobot.io/blog/ssl-certificate-monitoringFri, 16 Oct 2026 09:00:00 GMTWhat SSL certificate monitoring should check (expiry, host names, chain, issuer), how far ahead to alert, and the renewal automation mistakes to watch for. https://pingrobot.io/blog/net-err-cert-common-name-invalidhttps://pingrobot.io/blog/net-err-cert-common-name-invalidFri, 16 Oct 2026 09:00:00 GMTNET::ERR_CERT_COMMON_NAME_INVALID means the certificate does not cover the host name you visited. Wildcard rules, common causes and fixes. https://pingrobot.io/blog/missing-intermediate-certificatehttps://pingrobot.io/blog/missing-intermediate-certificateFri, 16 Oct 2026 09:00:00 GMTAn incomplete SSL chain works in some browsers but fails in curl, apps and APIs. Why, how to detect it with openssl, and how to serve the full chain. https://pingrobot.io/blog/how-to-monitor-a-wordpress-sitehttps://pingrobot.io/blog/how-to-monitor-a-wordpress-siteFri, 16 Oct 2026 09:00:00 GMTMonitor a WordPress site properly - home page, a keyword on a real page element, the login page, the REST API and wp-cron with a heartbeat. https://pingrobot.io/blog/api-monitoringhttps://pingrobot.io/blog/api-monitoringFri, 16 Oct 2026 09:00:00 GMTMonitor a REST API with an HTTP check and a keyword like "status":"ok" on its /health endpoint, plus what to return, latency targets and auth tips. https://pingrobot.io/blog/47-day-ssl-certificateshttps://pingrobot.io/blog/47-day-ssl-certificatesFri, 16 Oct 2026 09:00:00 GMTPublic TLS certificates drop to 200 days in 2026, 100 days in 2027 and 47 days in 2029. The exact dates, the validation reuse changes and how to prepare. https://pingrobot.io/blog/what-urls-should-you-monitorhttps://pingrobot.io/blog/what-urls-should-you-monitorThu, 15 Oct 2026 09:00:00 GMTA practical checklist of the URLs, ports and background jobs to monitor for marketing sites, SaaS apps, online stores, APIs, WordPress and scheduled jobs. https://pingrobot.io/blog/sla-vs-slo-vs-slihttps://pingrobot.io/blog/sla-vs-slo-vs-sliThu, 15 Oct 2026 09:00:00 GMTSLI is what you measure, SLO is the target you aim for, SLA is the promise with consequences. Clear examples, error budget math and a starter set. https://pingrobot.io/blog/mttr-mean-time-to-recoveryhttps://pingrobot.io/blog/mttr-mean-time-to-recoveryThu, 15 Oct 2026 09:00:00 GMTMTTR is the average time from failure to full recovery. Learn the formulas for MTTR, MTTD, MTTA and MTBF with a worked example and ways to lower them. https://pingrobot.io/blog/how-to-monitor-a-shopify-storehttps://pingrobot.io/blog/how-to-monitor-a-shopify-storeThu, 15 Oct 2026 09:00:00 GMTWhat to monitor on a Shopify store, which parts Shopify runs for you, and which failures only you will notice, from DNS to apps to product pages. https://pingrobot.io/blog/false-positive-downtime-alertshttps://pingrobot.io/blog/false-positive-downtime-alertsThu, 15 Oct 2026 09:00:00 GMTWhy uptime monitors raise false alarms - network blips, tight timeouts, WAFs, rate limits, DNS - and how to stop them without hiding real outages. https://pingrobot.io/blog/dns-probe-finished-nxdomainhttps://pingrobot.io/blog/dns-probe-finished-nxdomainThu, 15 Oct 2026 09:00:00 GMTDNS_PROBE_FINISHED_NXDOMAIN means the domain name could not be resolved. Fixes for visitors and site owners, with dig and nslookup commands. https://pingrobot.io/blog/what-is-uptime-monitoringhttps://pingrobot.io/blog/what-is-uptime-monitoringWed, 14 Oct 2026 09:00:00 GMTUptime monitoring checks your website, API or server on a schedule from outside and alerts you when it fails. Learn how it works and what to set up. https://pingrobot.io/blog/website-down-checklisthttps://pingrobot.io/blog/website-down-checklistWed, 14 Oct 2026 09:00:00 GMTWebsite down? Work through DNS, TLS certificates, hosting, CDN, app errors, the database and recent deploys in order, with the exact commands to run. https://pingrobot.io/blog/uptime-percentage-explainedhttps://pingrobot.io/blog/uptime-percentage-explainedWed, 14 Oct 2026 09:00:00 GMTHow much downtime 99%, 99.9%, 99.99% and 99.999% uptime allow per year, month, week and day, how to calculate it, and how to measure it. https://pingrobot.io/blog/tcp-port-monitoringhttps://pingrobot.io/blog/tcp-port-monitoringWed, 14 Oct 2026 09:00:00 GMTTCP port monitoring checks that a server accepts connections on a port. Learn which ports to watch, how to test them and why to use 587 or 465, not 25. https://pingrobot.io/blog/keyword-monitoringhttps://pingrobot.io/blog/keyword-monitoringWed, 14 Oct 2026 09:00:00 GMTKeyword monitoring checks that a page contains expected text, catching error pages, blank templates and hacked content that still return 200 OK. https://pingrobot.io/blog/http-status-codeshttps://pingrobot.io/blog/http-status-codesWed, 14 Oct 2026 09:00:00 GMTThe common HTTP status codes from 1xx to 5xx, each with a plain-English meaning based on RFC 9110 and what it means for uptime monitoring. https://pingrobot.io/blog/http-504-gateway-timeouthttps://pingrobot.io/blog/http-504-gateway-timeoutWed, 14 Oct 2026 09:00:00 GMTA 504 Gateway Timeout means a proxy gave up waiting for the server behind it. Find the slow upstream, tune proxy_read_timeout, and fix the real cause. https://pingrobot.io/blog/http-503-service-unavailablehttps://pingrobot.io/blog/http-503-service-unavailableWed, 14 Oct 2026 09:00:00 GMTHTTP 503 means a server is temporarily unable to handle requests. Learn the causes, how Retry-After works, and how monitoring should treat planned 503s. https://pingrobot.io/blog/http-502-bad-gatewayhttps://pingrobot.io/blog/http-502-bad-gatewayWed, 14 Oct 2026 09:00:00 GMTA 502 Bad Gateway means a proxy got an invalid response from the server behind it. Learn the causes, the nginx log lines to look for, and the fixes. https://pingrobot.io/blog/http-500-internal-server-errorhttps://pingrobot.io/blog/http-500-internal-server-errorWed, 14 Oct 2026 09:00:00 GMTWhat an HTTP 500 Internal Server Error means under RFC 9110, why your app returns it, and how to find the root cause in logs and fix it. https://pingrobot.io/blog/how-to-monitor-website-uptime-for-freehttps://pingrobot.io/blog/how-to-monitor-website-uptime-for-freeWed, 14 Oct 2026 09:00:00 GMTFour free ways to monitor website uptime, from a hosted free plan to a cron script, with setup steps, trade-offs and a checklist for reliable alerts. https://pingrobot.io/blog/how-to-create-a-status-pagehttps://pingrobot.io/blog/how-to-create-a-status-pageWed, 14 Oct 2026 09:00:00 GMTCreate a public status page that customers trust. Choose components, connect monitoring, write incident updates and keep the page off your own servers. https://pingrobot.io/blog/cron-job-monitoring-with-heartbeatshttps://pingrobot.io/blog/cron-job-monitoring-with-heartbeatsWed, 14 Oct 2026 09:00:00 GMTMonitor cron jobs and systemd timers with heartbeat URLs. Copy-paste crontab and systemd examples that ping only on success, plus common pitfalls.