Monitor your ClickHouse cluster from your iPhone
An alert fires at 2 a.m. and your laptop is across the room. With ProbeDeck you open your iPhone, connect to your ClickHouse cluster over TLS or through your SSH bastion, and within seconds you know whether queries are backing up, a replica is lagging, or a disk is filling. Monitoring is free, so you can run it against your own production before you ever pay.
Cluster health at a glance
The Monitoring dashboard is the main screen. It surfaces health tiles for the whole cluster: running queries, replication, disks, parts, mutations, merges, QPS and memory. Each tile is graded healthy, warning, or critical, so a single glance tells you whether everything is fine. Pull to refresh, or let it poll while the screen is open. This is the part that makes ProbeDeck feel like Datadog for ClickHouse.
See what's running, right now
ProbeDeck reads system.processes live: query_id, user, elapsed time with a colour grade, memory, and rows read. During an incident you can see exactly which SELECT is loading the cluster. Killing a runaway query is a one-time Pro unlock. The button stays visible for free with a PRO badge, so you find it before the incident, not during one.
Replica lag and read-only detection
Replication problems are a ClickHouse-specific on-call surface that generic clients miss. ProbeDeck reads system.replicas andsystem.replication_queue to show absolute delay, queue size, and the read-only flag that means Keeper is unreachable. You can triage lag from the alert, before your users feel it.
Secure access over TLS or your SSH bastion
ProbeDeck connects directly from your iPhone to ClickHouse over its HTTPS/TLS interface, or through an SSH tunnel to reach a cluster behind a firewall, with password or key and host-key verification. Nothing is proxied or relayed through us. The app stores connections in the iOS Keychain and never syncs them to any external service, so your credentials stay on the device.
Get ProbeDeck
ProbeDeck is an iOS 17+ app by Vladimir Chemeris. Monitoring is free forever; a one-time Pro unlock ($19.99) adds the operations: kill, writes, and the AI assistant. No subscription.
$19.99 · Free monitoring · One-time Pro unlock · No subscription
Learn more on the ClickHouse client for iOS overview, see how to kill a runaway query, or read the guide to mobile ClickHouse monitoring.
ClickHouse is a registered trademark of ClickHouse, Inc. ProbeDeck is not affiliated with, endorsed by, or sponsored by ClickHouse, Inc.