Feb 042016
 
 Posted by on February 4, 2016 at 10:31 pm Automation, bash, Shell Scripting Tagged with: ,  No Responses »
Shell Scripting

While checking for a script which checks for a username ssh login with password to a remote ssh host, either windows machine with openssh or a linux machine. I saw many articles on how to login to remote host password less or how to input password automatically using expect or sshpass tools. But for me the requirement was only to test the correctness of a username and password to a remote ssh login.
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Feb 022016
 
FAQ

On Windows machine while using Internet Explorer to access WebSphere Application Server Admin console or similar websites, at times administrators encounter the error message “There is a problem with this website’s security certificate”. In the following section we will go through the steps you could do to potentially to avoid this Website security certificate error message from re occurring.

One of the possible cause of Website security certificate error message is “Untrusted Certificate” error which may occur when the root certificate used by WAS is not added to the “Trusted root certificate Authorities “of your Windows machine.
Follow the below steps to add root certificate to “Trusted root certificate Authorities “of your Windows machine.
1.Right click and launch IE with the Run as administrator.
2.Navigate to WAS admin console URL. Continue reading »

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Sep 012015
 
 Posted by on September 1, 2015 at 8:11 am LibreOffice Tagged with: , ,  No Responses »
LibreOffice

LibreOffice is a free and open source office suite, developed by The Document Foundation. It was forked from OpenOffice.org in 2010, which was an open-sourced version of the earlier StarOffice. The LibreOffice suite comprises programs for word processing, the creation and editing of spreadsheets, slideshows, diagrams and drawings, working with databases, and composing mathematical formula.

Here we will discuss how to make LibreOffice as service.

LibreOffice windows service creation steps:

Pre-requisites: Download and Install the windows resource kit which provides two utilities, Srvany.exe and Instsrv.exe, that allow for the creation of a user-defined service.
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Aug 262015
 
 Posted by on August 26, 2015 at 8:39 pm Automation, DevOps, Rundeck Tagged with: , , ,  No Responses »
DevOps

While trying to evaluate Rundeck I came across one challenge i.e integrating rundeck windows nodes. Though rundeck work perfectly fine with non windows nodes but for windows nodes management there are not much documentation or working examples. I had tried to use the google groups for getting some info on rundeck windows nodes integration and to my surprise I got few responses but all seems to be a work around way to integrate windows nodes.
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Jul 092015
 
 Posted by on July 9, 2015 at 6:33 pm FAQ, Java, JVM Tuning, Troubleshooting Tagged with: , ,  No Responses »
Java

While debugging a production crash with huge Xms(24GB) and Xmx(30GB) sizes, we got a heap dump of 18GB to analyse for out of memory root cause. We were not having any big machines to run the MAT(Memory Analysis Tool) to analyse the heap dump and all the time we were getting out of memory in MAT itself in midway of analysis. While searching on google we got few good references like this but there also we found we have to put huge Xms and Xmx for MAT itself and our laptops were not well equipped to do so.

We had 8GB laptops to analyse a 18GB dump and we had to set garbage collection alogoritms to keep the MAT getting out of memory while running it in command line mode instead of GUI as it takes more memory to analyse.

 

Below are few steps which you need to follow to analyse the huge heap dumps with out Out of memory errors in MAT.

1.  Download the latest MAT for here

2. cd to the MAT installation folder and open the MemoryAnalyzer.ini file and update below settings.

Note: Here we are using a 8GB laptop so settings are set accordingly. If you have higher configuration or lower you have to set the Xms and Xmx accordingly.
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