Dev Ops Lanka

coursera-dl HTTPError 404 Client Error: Not Found for url: https://api.coursera.org/api/onDemandCourseMaterials.v1 Solved 2023 May

Posted May 22, 2023 by sameera_admin

Today, I encountered a problem while trying to download a few courses from my Coursera.org account. I attempted to use Google Colab with this notebook: link. However, I encountered an error when attempting to download. The error is "HTTPError 404 Client Error: Not Found for url: https://api.coursera.org/api/onDemandCourseMaterials.v1". To resolve this…

Redhat RHEL7 Root Password reset rd.break not working 100% Solved

Posted January 15, 2023 by sameera_admin

When you forget your root password there is a way to reset root password first you have to power on a virtual machine or your RedHat Linux machine. When the bootloader menu appears press any key to pause the booting process then select the kernel using the arrow keys then…

Install OpenCV Python Using Miniconda Windows 10

Posted October 13, 2020 by sameera_admin

OpenCV is Library That use in computer vision .Today im going to show you how to install open cv in our previously created mytensorflow enviroment. first activate the miniconda enviroment using conda activate mytensorflow mytensorflow is the name that i given when i created the environment you can read my…

Install Keras and Tensorflow on Windows 10 Working

Posted October 7, 2020 by sameera_admin

In previous post we discuss how to install Tensorflow on Windows 10 computer.It is easy to work now because most of the hard part is done now. Open terminal and activate your environment using conda activate mytensorflow Then type pip install keras This will install keras but there is a…

Install Tensorflow on Windows 10 Working

Posted October 6, 2020 by sameera_admin

Tensorflow is the frame work that use in Machine Learning and Deep Learning .Today im going to show you how to install Tensorflow -CPU version on your computer. Here i'm not using GPU version because if your machine have a gpu if you are installing additional driver packages like CUDA…

not configured to listen on any interfaces centos 7 Solved

Posted November 29, 2019 by sameera_admin

if you are trying to dhcp server to pxe network boot with kickstart redhat or centos you will face error not configured to listen on any interfaces centos 7 here is the solution see your network interfaces using ifconfig and select your netwoek interface name then edit /etc/sysconfig/dhcpd file nano…

Fatal error: $CFG->dataroot is not writable, admin has to fix directory permissions! Exiting.Solved 100%

Posted November 29, 2019 by sameera_admin

When you try to install moodle and execute the moodle some time you will face "Fatal error: $CFG->dataroot is not writable, admin has to fix directory permissions! Exiting." this error.This is few ways to solve this error Disable SELinux Disable selinux is one way to solve this problem but i'm…

Coding error detected, it must be fixed by a programmer: Failed to unserialise data from file. Either failed to read, or failed to write.

Posted November 26, 2019 by sameera_admin

If you face these error " Coding error detected, it must be fixed by a programmer: Failed to unserialise data from file. Either failed to read, or failed to write. " in moodle here is the solution First login to your moodle server and navigate to moodle directory cd /var/www/html/moodle…

Authentication plugin ‘caching_sha2_password’ cannot be loaded (SOLVED )100%

Posted July 24, 2019 by sameera_admin

Error :- Connection failed: Authentication plugin 'caching_sha2_password' cannot be loaded: /usr/lib64/mysql/plugin/caching_sha2_password.so: cannot open shared object file: No such file or directory Solution :- ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'yourpassword'; FLUSH PRIVILEGES;

Error response from daemon: Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers) Solved 100%

Posted March 29, 2019 by sameera_admin

when you try to pull from docker hub or docker login you will face this error.if you are behind company proxy this will be happen.here is the step for solve this error Unable to download Docker images behind a proxy Error response from daemon: Get https://registry-1.docker.io/v2/: net/http: request canceled while…

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