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Solving Frequent ColdFusion Server Problems in New and Better Ways

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ColdFusionConference
ColdFusionConference

Charlie Arehart gave a presentation on solving frequent ColdFusion server problems in new and better ways. He discussed using server logs more effectively to diagnose issues, various tools for monitoring CF servers beyond just watching monitors, and specific things to watch like memory, requests, queries and sessions. He provided examples of common challenges encountered and resources for further troubleshooting assistance.

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Charlie Arehart Independent Consultant charlie@carehart.org / @carehart CF911: SOLVING FREQUENT CF SERVER PROBLEMS IN NEW/BETTER WAYS
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG WHY WE’RE HERE • People face CF server problems quite often • Server “crashes” or ”locks up” • CPU or memory go “way up” • What’s the common solution? • There is a better way…
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG A BETTER WAY • I help people with such problems every day • Remote, short-term shared desktop sessions • Solving problems while educating them • Sharing here my experience doing that for past several years • I focus on diagnostics, rather than “try this” approach • I find that most people are not aware of many resources, tools • We’ll focus here on several of those resources/tools in this talk • Will point to resources at end with links to more details
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG WHAT WE’LL BE COVERING • Logs: there’s more to them than you may think • Monitoring CF: perhaps some unexpected discoveries • Beyond "watching monitors“ • Watching specific trouble spots
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG NOTES • Will focus on ColdFusion in this session • Concepts apply as well to Railo, BD, OpenBD, JEE servers • Not focused here on CF11/10 particularly, but will make some mention • Will show Windows, but concepts and some tools apply to *nix • Hope to share also in “CArehart Quick Tips” Youtube videos • youtube.com/user/carehart/videos
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG ABOUT CHARLIE AREHART Independent Consultant • 17+ yrs CF experience (30+ Enterprise IT) • Certified Adv CF Developer, Instructor • Adobe Forum MVP, CF CAB member • Co-author CFWACK books: 8, 9, 10 • Living in Alpharetta, Georgia (Atlanta) Web home at www.carehart.org • CArehart Quick Tips on Youtube • 100+ presentations, 80+ articles, 400+ blog entries • UGTV: recordings of 600+ presos by 300+ speakers • CF411.com: 1800+ tools/resources, 150+ categories • CF911.com: CF server troubleshooting resources • Hosting courtesy of EdgeWeb Hosting • Consulting: available for CF troubleshooting, tuning • Remote or on-site; on-demand, single instance is ok
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG LOGS: THERE’S MORE TO THEM THAN YOU MAY THINK
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • Log file locations • Key log file content • Configuring still more logging • Using logs with crashes/hangs • Viewing logs • Searching logs • Saving logs over time • New logs in CF11/10 (metrics, access)
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG MONITORING CF: PERHAPS SOME UNEXPECTED DISCOVERIES
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • CF Standard vs Enterprise, CF8/9/10/11 vs CF7/6 • Low-end solutions • CFSTAT (command line tool) • JRun metrics logging (CF9 and earlier) • CF11/10 metrics log
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • ColdFusion Enterprise Server Monitor (CF 8 Ent and above) • Impact, depends on “start” buttons enabled • Sidebar: What if no “start” buttons appear? • Free stuff (even if no “start” buttons enabled) • More aspects of monitor later • Sidebar: CF10 Admin “single user at a time” problem • Fixed in CF11
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • FusionReactor and SeeFusion • Third party commercial CF monitoring solutions • FR actually works with Railo, BD, OpenBD, Solr • Indeed, any Java server (and in FR5, any Java app) • Both have free trials • Some overlap among the 3 monitors, each has distinctives • Will show each as we proceed • Sidebar: Monitoring multiple instances at once
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG BEYOND "WATCHING MONITORS“
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • Don’t fall into trap of thinking “who wants to watch a monitor” • These tools offer SO MUCH more • What has happened vs what is happening • Monitor history features • Logs • Alerts: Warn me when I'm not watching/can't watch monitor(s) • Stack tracing: What's happening right now in a request • Sidebar: FusionAnalytics
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG WATCHING SPECIFIC TROUBLE SPOTS
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • Memory • Request activity • Queries • Sessions • Query caching • Template caching • Client activity
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG SOME PARTICULAR, COMMON CHALLENGES • Configuring CF Admin “Request Tuning” page • Timeouts and killing requests • Spiders, bots, and other automated requests • Client variables, perhaps unexpected impact • CFDocument, image resize unexpected impact • CF Standard “Enterprise Feature Routing” • Changes in CF11/10 caching: now per-app by default • On the need to update web connector after some CF10 updates • Properly applying updates to CF9 and earlier
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG SUMMARY • We covered a lot of ground • Logs: there’s more to them than you may think • Monitoring CF: perhaps some unexpected discoveries • Beyond "watching monitors“ • Watching specific trouble spots • Fortunately, nearly all topics are covered to some degree in docs, blogs, presentations, or my Youtube videos • I even provide resources that point to other resources…
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG RESOURCES • CF911.com • A repository of CF server troubleshooting resources • CF411.com/cfconsult • A list of CF server troubleshooting consultants • CArehart Quick Tips on Youtube • youtube.com/user/carehart/videos • CArehart.org/consulting • Recall my approach: remote, using diagnostics, teaching you • Can help with troubleshooting, migration, config, security, etc. • See page for approach, rates, satisfaction guarantee, more
CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG CONCLUSION • Hope you feel that you learned a lot • Use the resources mentioned to remind you, learn still more • Contact me personally if you need a pointer to anything mentioned • Would like to take questions in a moment, but first… • Did you enjoy the session? • Don’t forget to fill out your evaluations! • Any questions?

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Solving Frequent ColdFusion Server Problems in New and Better Ways

  • 1. Charlie Arehart Independent Consultant charlie@carehart.org / @carehart CF911: SOLVING FREQUENT CF SERVER PROBLEMS IN NEW/BETTER WAYS
  • 2. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG WHY WE’RE HERE • People face CF server problems quite often • Server “crashes” or ”locks up” • CPU or memory go “way up” • What’s the common solution? • There is a better way…
  • 3. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG A BETTER WAY • I help people with such problems every day • Remote, short-term shared desktop sessions • Solving problems while educating them • Sharing here my experience doing that for past several years • I focus on diagnostics, rather than “try this” approach • I find that most people are not aware of many resources, tools • We’ll focus here on several of those resources/tools in this talk • Will point to resources at end with links to more details
  • 4. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG WHAT WE’LL BE COVERING • Logs: there’s more to them than you may think • Monitoring CF: perhaps some unexpected discoveries • Beyond "watching monitors“ • Watching specific trouble spots
  • 5. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG NOTES • Will focus on ColdFusion in this session • Concepts apply as well to Railo, BD, OpenBD, JEE servers • Not focused here on CF11/10 particularly, but will make some mention • Will show Windows, but concepts and some tools apply to *nix • Hope to share also in “CArehart Quick Tips” Youtube videos • youtube.com/user/carehart/videos
  • 6. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG ABOUT CHARLIE AREHART Independent Consultant • 17+ yrs CF experience (30+ Enterprise IT) • Certified Adv CF Developer, Instructor • Adobe Forum MVP, CF CAB member • Co-author CFWACK books: 8, 9, 10 • Living in Alpharetta, Georgia (Atlanta) Web home at www.carehart.org • CArehart Quick Tips on Youtube • 100+ presentations, 80+ articles, 400+ blog entries • UGTV: recordings of 600+ presos by 300+ speakers • CF411.com: 1800+ tools/resources, 150+ categories • CF911.com: CF server troubleshooting resources • Hosting courtesy of EdgeWeb Hosting • Consulting: available for CF troubleshooting, tuning • Remote or on-site; on-demand, single instance is ok
  • 7. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG LOGS: THERE’S MORE TO THEM THAN YOU MAY THINK
  • 8. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • Log file locations • Key log file content • Configuring still more logging • Using logs with crashes/hangs • Viewing logs • Searching logs • Saving logs over time • New logs in CF11/10 (metrics, access)
  • 9. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG MONITORING CF: PERHAPS SOME UNEXPECTED DISCOVERIES
  • 10. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • CF Standard vs Enterprise, CF8/9/10/11 vs CF7/6 • Low-end solutions • CFSTAT (command line tool) • JRun metrics logging (CF9 and earlier) • CF11/10 metrics log
  • 11. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • ColdFusion Enterprise Server Monitor (CF 8 Ent and above) • Impact, depends on “start” buttons enabled • Sidebar: What if no “start” buttons appear? • Free stuff (even if no “start” buttons enabled) • More aspects of monitor later • Sidebar: CF10 Admin “single user at a time” problem • Fixed in CF11
  • 12. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • FusionReactor and SeeFusion • Third party commercial CF monitoring solutions • FR actually works with Railo, BD, OpenBD, Solr • Indeed, any Java server (and in FR5, any Java app) • Both have free trials • Some overlap among the 3 monitors, each has distinctives • Will show each as we proceed • Sidebar: Monitoring multiple instances at once
  • 14. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • Don’t fall into trap of thinking “who wants to watch a monitor” • These tools offer SO MUCH more • What has happened vs what is happening • Monitor history features • Logs • Alerts: Warn me when I'm not watching/can't watch monitor(s) • Stack tracing: What's happening right now in a request • Sidebar: FusionAnalytics
  • 16. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG • Memory • Request activity • Queries • Sessions • Query caching • Template caching • Client activity
  • 17. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG SOME PARTICULAR, COMMON CHALLENGES • Configuring CF Admin “Request Tuning” page • Timeouts and killing requests • Spiders, bots, and other automated requests • Client variables, perhaps unexpected impact • CFDocument, image resize unexpected impact • CF Standard “Enterprise Feature Routing” • Changes in CF11/10 caching: now per-app by default • On the need to update web connector after some CF10 updates • Properly applying updates to CF9 and earlier
  • 18. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG SUMMARY • We covered a lot of ground • Logs: there’s more to them than you may think • Monitoring CF: perhaps some unexpected discoveries • Beyond "watching monitors“ • Watching specific trouble spots • Fortunately, nearly all topics are covered to some degree in docs, blogs, presentations, or my Youtube videos • I even provide resources that point to other resources…
  • 19. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG RESOURCES • CF911.com • A repository of CF server troubleshooting resources • CF411.com/cfconsult • A list of CF server troubleshooting consultants • CArehart Quick Tips on Youtube • youtube.com/user/carehart/videos • CArehart.org/consulting • Recall my approach: remote, using diagnostics, teaching you • Can help with troubleshooting, migration, config, security, etc. • See page for approach, rates, satisfaction guarantee, more
  • 20. CHARLIE AREHART, @CAREHART CHARLIE@CAREHART.ORG CONCLUSION • Hope you feel that you learned a lot • Use the resources mentioned to remind you, learn still more • Contact me personally if you need a pointer to anything mentioned • Would like to take questions in a moment, but first… • Did you enjoy the session? • Don’t forget to fill out your evaluations! • Any questions?