Health

See a host's live health - top issues, resource usage, and service checks.

The Health tab is a live overview of a host. It surfaces the most important problems first and shows real-time resource usage and the status of every monitored service.

The Health tab showing top issues and host monitoring graphs
The Health tab showing top issues and host monitoring graphs

This tab covers:

  • Top issues - ranked list of detected problems
  • Latest reports - investigation reports for this host
  • Host monitoring - CPU, memory, swap, and disk graphs
  • Services - status of every monitored service check

Top issues

A ranked list of the most important problems detected on the host. Each issue shows a severity (CRITICAL / HIGH / MEDIUM / LOW / INFO) and a category (PERFORMANCE / AVAILABILITY / SECURITY / STABILITY). Expand an issue to see what is happening, a recommended fix, and links to open the related investigation reports.

When nothing has been detected, the panel is empty and reports that there are no top issues for the host.

The Health tab of a host with no detected problems, showing the empty Top Issues and Latest Reports panels
The Health tab of a host with no detected problems, showing the empty Top Issues and Latest Reports panels

Latest reports

The most recent investigation reports for the host, newest first. Open a report to read its full details, or download the Portable Document Format (PDF) when available.

When you open a report, its address appears in the browser URL, so the report is bookmarkable and shareable. Use the Link button in the report header to copy that address to your clipboard (the button confirms with Copied). Anyone who opens the copied link, and who has access to the host, lands on the Health tab with the same report already open.

An open investigation report with the Link button that copies a shareable address
An open investigation report with the Link button that copies a shareable address

Host monitoring

Resource-usage cards for the four things that most often cause a slow or failing site. Each card shows a current percentage, an OK / Warning / Critical status, and a graph. Use the 1H / 8H / 1D / 7D buttons to change the time range (1 hour to 7 days). The view refreshes automatically.

Card What it measures What a high value means and what to do
CPU (Central Processing Unit) How busy the server's processor is. Sustained high CPU means the server is doing more work than it can keep up with, so pages slow down. Look for a traffic spike, a heavy task, or inefficient code. See High CPU and load.
RAM (Random Access Memory) How much of the server's working memory is in use. High memory use is normal up to a point. The risk is running out - see swap below.
Memory swap Disk space used as overflow when RAM is full. If swap is rising, the server has run out of fast memory and is using slow disk instead, which makes everything slower. See Out of memory.
Disk How full the server's storage is. A full disk causes uploads, logs, databases and backups to fail. Free up space before it reaches 100%. See Disk space.

Services

A list of all monitored service checks for the host - for example the database, web server, cache and connectivity checks. Each check shows its status (OK, Warning, Critical or Unknown), the latest output from the check, and when it last ran. An Unknown status means the check could not determine the service state, for example because it did not return a result.

A check in Warning, Critical or Unknown state is the place to start when something is wrong: the output usually names the exact problem (for example a service that is not running, or a certificate about to expire). Many issues can be resolved from the command-line tool or by publishing a corrected configuration.