How to take Java heap dump
A heap dump is a snapshot of all the objects that are in memory in the JVM at a certain
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Owncloud error after upgrade: This ownCloud instance is currently in maintenance mode, which may take a while.
This ownCloud instance is currently in maintenance mode, which may take a while. This is a common message after the
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Docker Error: Error saving credentials: error storing credentials - err: exit status 1, out: `Cannot autolaunch D-Bus without X11 $DISPLAY`
Error saving credentials: error storing credentials - err: exit status 1, out: Cannot autolaunch D-Bus without X11 $DISPLAY This error
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How to enable authentication for Loki
Loki is an open-source, multi-tenant log aggregation system from Grafana Labs. In-order to use the multi-tenant feature, authentication should be
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How to recover access to the EC2 instance for which the key pair lost
If ssh key pair lost, its not possible to connect to EC2 instances. But there is a method to get
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Let's Encrypt ssl error: You have an invalid or missing intermediate (bundle) certifiate
You have an invalid or missing intermediate (bundle) certifiate This error is because of the problem in the intermediate certifiate.
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How to copy file to an existing docker container
We can use the docker command to copy file from local to existing docker container. Where source, container, destination need
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How to enable nrpe service checks in Icinga for remote host
NRPE is the application to execute Nagios plugins in remote server. We can install nrpe on remote Linux machine by
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Laravel: mixed content error
mixed content error This is a common issue that happens on configuring ssl for the domain. This article explains the
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How to create image from Docker container
We can create image from Docker container through commandline. Here we need to replace CONTAINER with the id of the
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How to accept user input in Jenkins pipeline
Its possible to prompt an interactive input from user in Jenkins pipeline during build. We can use the following sample
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