// uptime · servers · containers

Know it’s down before your customers do.

relay19 watches your endpoints and your machines from one place. HTTP, TLS, SMTP, DNS, TCP and heartbeat checks, plus a one-line Linux agent for CPU, memory, disk and Docker. Alerts where you want them, an audit trail for the whole team.

Start monitoring → See how it works

$ curl -fsSL https://p.relay19.com/v1/install.sh | sh

✓ relay19-agent installed: reporting cpu · mem · disk · docker

// check types

Every layer of your stack, one watcher.

From a public endpoint to a port on a private box: pick the check, set the rule, get the alert.

http(s)

Endpoint checks

Request any URL and assert the response: expected status, body contains, body must not contain.

200 in 38ms · body contains "ok" · 24h 100%

tls

Certificate watch

Valid chain and days to expiry, alerted well before it bites.

✓ TLSv1.3 · chain valid · expires in 74d

dns

Record answers

Resolve A, AAAA, CNAME, MX or TXT and compare against what you expect.

A 76.76.21.21 · match

smtp

Mail server checks

Talk to the mail server, expect the banner, optionally over TLS.

220 mx1 ready · STARTTLS

tcp

Port reachability

Open a socket on any host and port. Up means reachable, with latency.

connect :5432 · open in 2ms

heartbeat

Dead man's switch

Your cron jobs and pipelines ping us. Miss the grace window and you hear about it.

last ping 42s ago · grace 300s

relay19-agent

Server monitoring

One line installs the agent: CPU, memory, load, every real disk, and your Docker containers.

cpu

34%

mem

61%

disk

48%

test-01 · agent v0.4.0 · 12 containers running