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Interview Questions and Answers for 'Production support' - 12 question(s) found - Order By Newest

 Q1. What is Nagios ?
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Ans. Nagios is open source system , network and infrastructure monitoring software application. It alerts the user if anything goes wrong. Nagios is widely used as monitoring tool for enterprise applications.

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   Like      Discuss      Correct / Improve     production support   application support   nagios   system monitoring


  Q2. Explain Application / Server architecture being used in your project ?
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Ans. We are using cluster of Web servers and Application servers. Load Balancer is used to manage the load between them. Down the layer we have middleware server and then DB server to access database.

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   Like      Discuss      Correct / Improve     architecture   production support   java   servers   application support     Tata Consultancy (TCS)  HCL Technologies  IBM  Overstock.com  Choice Hotels  Amdocs        frequent


 Q3. How do you monitor the server resources if inadvertently high traffic is reported ?
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Ans. We use SAR command for that purpose. We also have GUI system monitoring tool to keep real time check of requests, load and memory usage.

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   Like      Discuss      Correct / Improve     server monitoring   production support   servers   website traffic   system monitoring   sar   application support


 Q4. Have you ever faced any problem due to caching?
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Ans. Yes , sometime we receive issues related to outdated pages being rendered to the user. In those cases we clear the cache and then try to investigate the reason for that. Sometime the issue is due to comparatively high refresh interval. In those cases we reduce the cache refresh interval.

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   Like      Discuss      Correct / Improve     caching   cache   java   web applications   production support   application support


 Q5. What are the steps you follow if you receive an application outage ticket ?Support2017-01-16 10:11:33

Ans. a. Inform the stake holders that the issue is being worked upon.
b. Login to server to see if its responding.
c. Access Application and Web Server logs to see if the application is receiving requests.
d. If not, Involve the appropriate Network Team.
e. Inform the stakeholders regarding the progress.
f. Bounce the web / application server instance , if required.
g. Close the ticket with the steps taken to resolve the problem.
h. Complete the RCA ( Root Cause Analysis ) and submit the report to stake holders.

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   Like      Discuss      Correct / Improve     production support


 Q6. How do you monitor the server resources if inadvertently high traffic is reported ?Support2017-01-16 10:11:50

Ans. We use SAR command for that purpose. We also have GUI system monitoring tool to keep real time check of requests, load and memory usage.

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   Like      Discuss      Correct / Improve     production support  unix  SAR


 Q7. How do you monitor your logs while investigating a high severity problem ?Support2017-01-16 10:12:06

Ans. We try to look for errors in the last n minutes when the issue occurred. If the issue is still occurring intermittently, We tail the logs for different application server instances to see the error snippets coming in the live logs.

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   Like      Discuss      Correct / Improve     production support  unix  application logs


 Q8. Have you done any sort of automation in your system monitoring tasks ?Support2017-01-16 10:12:24

Ans. Yes we have created System as well as Log monitoring scripts to keep track of exceptions. We are also using a tool that will inform the stake holders if an exceptional event occurs with the system.

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   Like      Discuss      Correct / Improve     production support  system monitoring  log monitoring


 Q9. What all caching has been used in your application?Support2017-01-16 10:12:39

Ans. We are using Akamai as web server cache.

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   Like      Discuss      Correct / Improve     caching  production support



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 Q10. Have you ever faced any problem due to caching?Support2017-01-16 10:13:02

Ans. Yes , sometime we receive issues related to outdated pages being rendered to the user. In those cases we clear the cache and then try to investigate the reason for that. Sometime the issue is due to comparatively high refresh interval. In those cases we reduce the cache refresh interval.

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   Like      Discuss      Correct / Improve     production support  caching


 Q11. What actions you take if there is an issue related to Database server ?Support2017-01-16 10:13:29

Ans. We involve DBA and try to solve it through them. By the time they are solving it , we keep the stake holders informed regarding the progress.

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   Like      Discuss      Correct / Improve     database  database server  production support


 Q12. What are your responsibilities after the problem ticket has been closed ?Support2017-01-16 10:14:07

Ans. We inform the stakeholders regarding the resolution and steps taken for it. We updated the ticket notes and link it with the master / related tickets. RCA is done for the high priority and critical issues and a report is submitted.

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   Like      Discuss      Correct / Improve     production support  system support




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