Docker Error response from daemon: conflict: unable to remove repository reference

When tried to remove an image(hello-world) from docker, we have received below error.

docker image rm hello-world

Error response from daemon: conflict: unable to remove repository reference "hello-world" (must force) - container 2399c8b64bc8 is using its referenced image bf756fb1ae65

Docker Error response from daemon conflict unable to remove repository reference

Reason:
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How to download and install Go language on Ubuntu

In this article, we will see how to download and install Go language on Ubuntu Linux.

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

1. Download Go(golang) language for Linux using below command.

wget https://golang.org/dl/go1.15.5.linux-amd64.tar.gz

We can get the lastest go language download from Download link
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docker: Got permission denied while trying to connect to the Docker daemon socket at unix

We have received below error when tried to run image in docker.

docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.40/containers/create: dial unix /var/run/docker.sock: connect: permission denied. See 'docker run --help'.

docker Got permission denied while trying to connect to the Docker daemon socket at unix

Reason:

We have tried to run docker image with non-root privileges.
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how to install Docker on CentOS 8

In this article, we will see how to install Docker on CentOS 8. Docker is available in two versions,

Docker CE (Community Edition)
Enterprise Edition (EE)
In this guide we will learn how to install Docker CE (Community Edition) on CentOS 8 or RHEL 8 Server.

System Requirements for Docker CE:

To install Docker Engine, you need a maintained version of CentOS 7. Archived versions aren’t supported or tested.

Updated Minimal CentOS 8 / RHEL 8
Sudo or root privileges
Internet Connection

SET UP THE REPOSITORY:
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How to install Docker on Ubuntu

In this article, we will see how to install Docker on Ubuntu.

1. Update the apt package index.

sudo apt-get update

2. Install packages to allow apt to use a repository over HTTPS.

sudo apt-get install \ apt-transport-https \ ca-certificates \ curl \ gnupg-agent \ software-properties-common

How to install Docker on Ubuntu

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How to install Apache Cassandra on CentOS or Redhat

In this article, we will see how to install Apache Cassandra on CentOS or Redhat.

1. Java should be there on Linux machine to install Apache Cassandra. Lets verify java installed or not.

java -version

How to install Apache Cassandra on Redhat or CentOS
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Remote Desktop can’t connect to the remote computer for one of these reasons

In this article, we will see possible solutions for the error “Remote Desktop can’t connect to the remote computer for one of these reasons”

RemoteApp Disconnected [Content] Remote Desktop can’t connect to the remote computer for one of these reasons: 1) Remote access to the server is not enabled 2) The remote computer is turned off 3) The remote computer is not available on the network Make sure the remote computer is turned on and connected to the network, and that remote access is enabled.

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Windows could not start the Terminal Services Licensing on Local Computer

In this article, we will see solution for “Windows could not start the Terminal Services Licensing on Local Computer”.

“Windows could not start the Terminal Services Licensing on Local Computer. For more information, review the System Event Log. If this is a non-Microsoft service, contact the service vendor, and refer to service-specific error code 31”

Noticed following event ids in the eventviewer.
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Having issues with printers disappearing in RDS sessions

In this article, we will solution for “having issues with printers disappearing in RDS sessions”. First check windows server event logs related to printers.

Further found the below mentioned event id :

Log Name: Microsoft-Windows-PrintService/Admin Source: Microsoft-Windows-PrintService Date: 9/14/2016 3:47:19 PM Event ID: 372 Task Category: Printing a document Level: Error Keywords: Classic Spooler Event,Document Print Job User: BRETTHAUER\MBenson Computer: RDS-2012.bretthauer.local Description: The document Print Document, owned by mbenson, failed to print on printer HP Envy 100 D410 series (Network) (redirected 5). Try to print the document again, or restart the print spooler. Data type: RAW. Size of the spool file in bytes: 49364. Number of bytes printed: 0. Total number of pages in the document: 1. Number of pages printed: 0. Client computer: \\RDS-2012. Win32 error code returned by the print processor:

Resolution:
—————–
–Stop the print spooler service .
–Need to delete the TMP file under %WINDIR%\system32\spool\printers.
–Start the print spooler service.

How to copy and paste between VirtualBox Virtual Machine and Guest Machine

In this article, we will see how to copy and paste between VirtualBox Virtual Machine and Guest Machine.

Copy and paste between VirtualBox Virtual Machine and Guest Machine step by step:
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