Documentation is an important part of any project. On the projects I maintain I put a lot of effort on documentation, and, frankly, the majority of time spent on my projects is on documentation. The matter of keeping the documentation faithful is a topic of interest. I'd like to outline a few documentation bundling possibilities, [...]
This post continues Generating Google line charts with SQL, part I, in pursue of generating time series based image charts. We ended last post with the following chart: http://chart.apis.google.com/chart?cht=lc&chs=400x200&chtt=SQL%20chart&chxt=x,y&chxr=1,-4716.6,5340.0&chd=s:dddddddddeeeeeefffffffffeeeedddcccbbaaZZZYYYXXXXXXXXXYYYZZabbcdeefghhijkkllmmmmmmmmllkkjihgfedcbZYXWVUTSRRQQPPPPQQQRSTUVWXZacdfgijlmnpqrssttuuuttssrqonmkigfdbZXVTSQONMLKJIIIIIIJKLMOPRTVXZbegilnprtvwyz01111110zyxvtrpnkifcaXUSPNLJHFECBBAAABBCEFHJLNQTWZcfilortwy1346789999876420yvspmjfcYVSOL which has a nice curve, and a proper y-legend, but incorrect x-legend and no ticks nor grids. To date, Google Image Charts do not support time-series [...]
In this series of posts I wish to show how Google Charts can be generated via SQL. We discuss the Google Charts limitations which must be challenged, and work towards a simple chart. I'm going to present the algorithm I use in mycheckpoint, a MySQL monitoring utility, which generates Google charts by raw data using [...]
Revision 208 of mycheckpoint, a MySQL monitoring solution, has been released. New and updated in this revision: Aggregation tables: aggregated data makes for fast reports on previously slow queries. Enhanced charting: interactive charts now present time stamps dynamically (see demo); "Zoom in" charts are available (see demo) on mycheckpoint's HTTP server. RPM distribution: a "noarch" [...]
MySQL@Facebook team have recently published an Online Schema Change code for non blocking ALTER TABLE operations. Thumbs Up! The code is derived from oak-online-alter-table, part of openark-kit, a toolkit I'm authoring. Looking at the documentation I can see many ideas were incorporated as well. And of course many things are different, a lot of work [...]
Revision 190 of mycheckpoint, a MySQL monitoring solution, has been released. New and updated in this revision: HTTP server: mycheckpoint can now act as a web server. Point your browser and start browsing through HTML reports. See mock up demo. Interactive charts: HTML line charts are now interactive, presenting with accurate data as you move [...]
Revision 170 of mycheckpoint, a MySQL monitoring solution, has been released. New and updated in this revision: Improved custom queries: lifting of limitations from previous, introductory revision; better HTML presentation Local, inline charting: no rendering of Google Charts, unless explicitly requested. All charts are now rendered locally using JavaScript. No data is now sent over [...]
Revision 132 of mycheckpoint has been released. New and updated in this revision: Custom monitoring: monitoring & charting for user defined queries HTML reports for custom monitoring Process list dump upon alert notifications Custom monitoring & charts Custom monitoring allows the user to supply with a query, the results of which will be monitored. That [...]
Revision 118 of mycheckpoint has been released. New and updated in this revision: Conditional alerts Email notifications Revised HTML reports, including 24/7 reports. Updated documentation With this new revision mycheckpoint turns into a monitoring solution for MySQL. One can now: Store measure metrics Query for raw, aggregated or digested metrics Generate charts for selected metrics [...]
Working on mycheckpoint, I have the intention of adding custom monitoring. That is, letting the user define things to monitor. I have my own thoughts, I would be grateful to get more input! What would the user want to monitor? Monitoring for the number of SELECT statements per second, InnoDB locks, slave replication lag etc. [...]