Web Servers – Page 9

February 4, 2013August 12, 2014Server, Web Technologies

Monitoring Web Sites/URLs/Web Pages Uptimes and Performance

Having known the whole world is connected by Web and businesses run on the web sites/page, it comes into major significance to ensure the availability and good performance of web sites/pages facing the customers. To learn about website monitoring, people can read more over at apicasystems.com to see how they can help their websites flourish. Here are a few methods/options that I have come across and hopefully come in handy for someone a similar role/responsibility. Use third party web site monitoring services like 24X7 24×7 My Site Response time from California exceeded 3000 ms. View Online […]

January 10, 2013August 12, 2014Server

PingDom analyzes/indexes/crawls all of your web pages

While evaluating pingdom for website monitoring, I noticed that it tries to crawl over all of our web servers, for a given url and then seem to be further analyzing/indexing/crawling all of web pages. This has increased load on the web servers and their user agent "Pingdom.com_bot_version_1.4_(http://www.pingdom.com/)" is causing constant failure/error logs in web server. Created a new empty Vendor Vendor: quiz = 0 Create RunSession new runssn.getId() == xxxxxxx ip= RunFront: trying to load skin config from database RunFront: Found with base path Weblog addRequest start addRequest: type=start Weblog2.addRequest(start) WelogEntry failed: action=launch remote=xxxxxxxxx ref=null agent=Pingdom.com_bot_version_1.4_(http://www.pingdom.com/) java.sql.SQLException: ORA-01653: unable […]

December 31, 2012August 12, 2014Server

Apache Tomcat Common Log Errors and their Meanings

Apache: (http-errs) mod_jk child init 1 0 – harmless, disregard Generally, these next 4 errors occur when a user stops loading a page: Error ajp_process_callback – write failed – The remote browser client aborted the HTTP request – can happen when Tomcat is overloaded and request latency increases significantly – user breaks browser connection while downloading data – error #1 in set ajp13.service() ajpGetReply recoverable error 3 – harmless ajp error? Comes with above error – error #2 in set ajp13.service() Error forwarding ajp13:<server:port> 1 0 – another harmless ajp error? error #3 in set mod_jk.handler() Error connecting to tomcat […]