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Downtime Monitoring

Jetpack’s downtime monitor will continuously watch your site, and alert you the moment that downtime is detected.

Once activated, one of our servers will start checking your site every five minutes.  If it looks like something’s gone awry, we’ll fire off an email notification to the WordPress.com account that Jetpack is connected to.


Emails

When downtime monitoring is activated, downtime notification emails will be sent to the user who activated it. If you have additional admin users connected to their WordPress.com accounts, they can also enable these email notifications for themselves via Jetpack → Settings → Security.

If you’d like to add something to your email filters to make sure these notification emails never get sent to spam, they’ll all be coming from support+monitor AT jetpack DOT com.

Is your site up and running properly, but you’re receiving ‘site down’ notifications?

This can happen for different reasons, and the content of the Notification emails should tell you more.

Your site is responding intermittently, or extremely slowly.

Your site may be loading slowly. If your site can’t be loaded in less than 20 seconds, we consider it as inaccessible. This may happen if you’re on shared hosting, where your bandwidth is shared with many other websites, or if you have a lot of resources loading on your home page; this will slow your site down.

Note that in some cases your site may be slow for a few minutes only. Its loading speed then comes back to normal after your hosting provider has taken measures to isolate other sites on your server that may have used too many resources and slowed everyone else’s site down for a few minutes.

Our requests are being redirected too many times.

If this happens, make sure your site URL is properly set up and that you don’t use any redirection plugins that may cause issues.

Jetpack is blocked.

Make sure your hosting service isn’t blocking our monitoring agent! The user agent that we’re sending along with the HEAD requests should be jetmon/1.0 (Jetpack Site Uptime Monitor by WordPress.com)! If it’s still not going through properly, please contact support.

The server does not respond..

If your theme or one of your plugins create 500 errors, also known as Fatal Errors, on your site, readers won’t be able to access your site and we will send you an email to let you know.

Status Alerts

At the bottom of the Notification email we send you when monitoring detects an issue with your site there is a section that can provide a little more information:

The number is our internal I.D. for your site. The second part is the status which is being returned. These are based on the HTTP response code to the HTTP HEAD request to your site’s home page:

  • “server” — a 5xx response, meaning the server had some type of fatal error.
  • blocked” — a 403 response, meaning the server replied that we were forbidden from viewing the home page.
  • client” — a 4xx response (other than 403), suggesting a similar server-side setting disabling access.
  • intermittent” — the request timed out without a response after 10 seconds. This case is one that can be confusing, since the site may actually be loading, just really slow. This one is also most likely to self-resolve–if the site is on a shared host and another site on the server is using too many resources, it could cause the other sites on the server to respond slowly. Note that our primary monitor server and the multiple verifying servers would all be seeing this for us to mark the site down.
  • redirection” — a 3xx response. Monitor will follow a few redirects, but if we’re asked to follow a fourth redirect, we assume there is a problem. Realistically, the suggests a redirect loop, but could be a relatively poor setup (e.g. example.com -> http://www.example.com -> http://www.example.com/en/ -> http://www.example.com/en/blog/ would be seen as down).
  • success” — a normal response. Everything worked. This should only be seen on the follow-up “Your site is back up!” e-mail.
  • unknown” — this shouldn’t ever happen. It suggests our monitoring service didn’t send an expected response to WordPress.com.

How does this work behind the scenes?

When we check your site, we ping your site’s homepage (via a HTTP HEAD request) every five minutes.

We tentatively mark your site as down if the HTTP response code is 400 or greater, which indicates either a permissions error or a fatal code error is prohibiting your site from appearing to visitors, or we see more than three 300-series redirects, suggesting a redirect loop, or if your site fails to respond within 20 seconds.

Once it is tentatively marked down, we then spin up three separate servers in geographically different locations from a third-party vendor to ensure the problem is not isolated to our network or the location of our primary datacenter.

If all three checks fail, we mark the site as down and notify you.

Note: Jetpack uses the timezone set in your WordPress settings (Settings > General)

Privacy Information

This feature is deactivated by default. If you ever need to deactivate this feature, you can click on the Settings link in the Downtime Monitoring section from Jetpack — Dashboard — At a Glance in your dashboard. Once you’re viewing the feature’s settings on WordPress.com, toggle the Monitor your site’s downtime setting found within the Downtime Monitoring section at the top of the page.

More information about the data usage on your site

This feature is deactivated by default. If you ever need to deactivate this feature, you can click on the Settings link in the Downtime Monitoring section from Jetpack — Dashboard — At a Glance in your dashboard. Once you’re viewing the feature’s settings on WordPress.com, toggle the Monitor your site’s downtime setting found within the Downtime Monitoring section at the top of the page.

Data Used
Site Owners / Users

Site owner’s local user ID, WordPress.com user ID, email address, WordPress.com-connected blog ID, and the date of the last downtime status change.

Additionally, for activity tracking (detailed below): IP address, WordPress.com user ID, WordPress.com username, WordPress.com-connected site ID and URL, Jetpack version, user agent, visiting URL, referring URL, timestamp of event, browser language, country code.

Site Visitors

None.

Activity Tracked
Site Owners / Users

We track when, and by which user, the feature is activated and deactivated. We also track when, and which, configuration settings are modified.

Site Visitors

None.

Data Synced (Read More)
Site Owners / Users

We sync options that identify whether or not the feature is activated and how its available settings are configured.

Site Visitors

None.

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