There are some occasions when you may want to take your web site, web application or servers offline for some upgrade or maintenance purpose. To prevent your sites or applications from being monitored during the maintenance period, you should configure a maintenance schedule for your monitors and thus avoid unnecessary notifications from Site24x7.

Given below are step-by-step instructions on how to configure a maintenance schedule in Site24x7.

1. Log in to your Site24x7 account and navigate to the Alerts tab.
2. Click Schedule Maintenance->Add Schedule link. The 'Add Schedule' screen will be displayed.
3. Provide details such as schedule name, description, recurrence details (i.e. daily, weekly or once), start time and end time in their respective fields.
4. The ‘Available Monitors’ box will display all the monitors present in your account. Select the required monitors and move it to the ‘Selected Monitors’ box.
5. Click the ‘Add’ button to complete the configuration.

For example, we have configured a maintenance schedule scheduled to run from 10:00 AM to 11:00 AM on Sundays.

Add Schedule Screen

The schedule thus created can be viewed from the Alerts tab under Schedule Maintenace->Schedule Details section. You may edit or delete the schedule settings from this screen or re-use the settings of the schedule for a different set of websites.

You may leverage the utility of maintenance schedules and avoid unwanted notifications during a scheduled maintenance. This helps to ensure that you receive alerts only when there is a problem and not otherwise.

Along with our recent iPhone client release, we have also included a couple of enhancements to our downtime reporting feature. Just thought of discussing these in greater detail for the benefit of our readers.

Mark Downtime as Maintenance - Exclude maintenance from Downtime Calculation

Lets just say you had taken your websites offline for some maintenance purpose. You most probably don't want to receive alerts for this scheduled downtime and you will not want this downtime to be reflected in your reports as well. In such a scenario, you can use the "mark downtime as maintenance" option and mark this downtime as maintenance in Site24x7. This will not be considered for downtime calculation and will be displayed separately in the availability chart.

You can specify maintenance period in 2 different ways:

1. Create a Maintenance schedule for the monitor: If you know the maintenance time  beforehand or if the downtime is a recurring event, you can create a maintenance schedule for the time period. Once you create a schedule, the site will be automatically marked as 'under Maintenance' for the timeframe of the schedule.
2. Mark downtime as Maintenance: Lets assume you forgot to configure a maintenance schedule and Site24x7 marked your site as down. However, since you know this is scheduled maintenance and don't really need to consider this as downtime, you can use the "Mark Downtime as Maintenance" option and mark the specific downtime as maintenance. Click the Mark as Maintenance icon from the downtime table in the monitor details page to convert a downtime to maintenance period.

Ability to add your own comments to the downtime

A second enhancement that has been included in our service is the option to specify your own comments for the downtimes. These comments can be anything that reflects the nature of the downtime or the reason for the downtime, etc.

These comments can be made public as well, so your visitors can also know the reason why your site went down.

What is your take on our latest enhancements? Feel free to comment or contact us directly for any questions.

Salesforce.com (CRM) was down for around 30-40 minutes yesterday between 12:40 to 1:20 US Pacific time. Customers complained they were unable to access their accounts or were unable to reach the website in some cases. Salesforce's status page had a brief explanation of the outage.

Service Disruption Time: 1/6/09 12:40 pm PST Detail: Service Disruption All Instances Root cause: Starting at 01/06/2009 20:39 UTC, a core network device failed due to memory allocation errors. The failure caused it to stop passing data but did not properly trigger a graceful fail over to the redundant system as the memory allocation errors where present on the failover system as well. This resulted in a full service failure for all instances. Salesforce.com had to initiate manual recovery steps to bring the service back up. The manual recovery steps was completed at 01/06/2009 21:17 UTC restoring most services except for AP0 and NA31:17 UTC restoring most services except for AP0 and NA3 search indexing. Search of existing data would work but new data would not be indexed for searching. Emergency maintenance was performed at 01/06/2009 23:24 UTC to restore search indexing for AP0 and NA3 and the implementation of a work-around for the memory allocation error. While we are confident the root cause has been addressed by the work-around the Salesforce.com technology team will continue to work with hardware vendors to fully detail the root cause and identify if further patching or fixes will be needed. Further updates will be available as the work progresses.

The event has attracted lots of coverage on the net and also triggered discussions on the downside of using remote services. Just goes to re-inforce the fact that 100% uptime is practically impossible, even for the top-level SaaS players!

Site24x7's website monitoring service has been recommended in the book 'Beginning Microsoft Office Live' by Rahul Pitre. Rahul Pitre runs Acxede, a company that builds web-based applications for small and medium-sized businesses.

The book deals with learning all the basic functions of Microsoft Office Live and building websites with office Live. Site24x7 has been featured in the 'Maintaining your Website' section of the book. The author recommends Site24x7 as the best automated service for monitoring web site downtime. He mentions about our free account which can monitor 2 websites for free, and also about the paid versions for more savvy users.

You can read a preview of this book from Google books and also order it from Amazon Thanks for recommending Site24x7, Rahul!

Firefox users might be interested in this. Here is a simple trick that lets you view your Site24x7 downtime and trouble notifications within Firefox itself, in the Firefox sidebar.

Prerequisite: You have to subscribe to Site24x7 RSS feed in Google Reader Below are the steps to view your alerts in Firefox sidebar:

1. Subscribe for a RSS alert from Site24x7. Login to your Site24x7 account, navigate to 'Alerts' tab and select the RSS link.
2. Login to your Google Reader account and subscribe to the Site24x7 feed.
3. Open the Bookmarks manager in Firefox browser (Bookmarks/Organize bookmarks)
4. If you are using Firefox 2, select 'New Bookmark' in the 'File' menu. If using Firefox 3, select 'Organize' in the toolbar and select 'New Bookmark'.
5. Enter a name, http://www.google.com/reader/i/ for location, and ensure to check Load this bookmark in the sidebar.
6. Press Save Changes. Now you can select the bookmark to load Google Reader in the Firefox sidebar and view your Site24x7 alerts.

This trick was partly inspired by this post in MozillaLinks. Stay tuned for similar tricks in our future posts!