Skip to content
CodeMarvels
All's the Code !
  • Home
  • Privacy Policy
  • About

Category: Notes

Notes/Technology

Fix : Docker node down after restart

Posted on November 5, 2020 by Kj / 0 Comment

Problem: One of the docker nodes does not start up after restart. Error in the log is msg="error removing task " error="incompatible value" Reason: Docker swarm...

Notes/Technology

IP Telephony – bit rates of audio formats, and other notes

Posted on October 29, 2020 by Kj / 0 Comment

The bit rates for the most common audio formats – ALAW 8 BITS ULAW 8 BITS PCM 16 BITS SIGNED/UNSIGNED ADPCM 8 BITS The endian-ness for more than one byte ...

Notes/Technology

Fix: Cannot start container Subnet sandbox join failed error from docker

Posted on October 27, 2020 by Kj / 0 Comment

Error : Few docker containers don’t start up. In the /var/log/syslog they give the error “Cannot start container Subnet sandbox join failed…&#...

Notes/Technology

React Ajax call on load gives : “Error: Should not already be working.”

Posted on September 2, 2020 by Kj / 0 Comment

Problem : On page refreshes, the ajax calls in the componentDidMount functions throws the error : “Error: Should not already be working.” Reason : P...

Notes/Technology

Fix : The repository ‘http://archive.ubuntu.com/ubuntu disco-backports Release’ no longer has a Release file.

Posted on July 26, 2020 by Kj / 0 Comment

Issue : When doing an apt update, we get the this error.The repository ‘http://archive.ubuntu.com/ubuntu disco-backports Release’ no longer has a Re...

Notes/Technology

Cannot connect to DB from a process inside Docker container ? This could fix it.

Posted on July 19, 2020 by Kj / 0 Comment

I had recently hit a blocker to production deployment, when my processes just won’t connect to my Cassandra DB from within their containers. This is how I...

Notes/Technology

Open ports in Ubuntu’s firewall using IP Tables

Posted on July 14, 2020 by Kj / 0 Comment

On the terminal, do the following to open port 80 sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT sudo iptables -F Persisting the rule changes across boot cy...

Notes/Technology

Make a new disk available in Ubuntu on AWS

Posted on June 30, 2020 by Kj / 0 Comment

To make a new disk you just added to the Ubuntu device, please go through the following steps – Check whats the /dev path of the disk. On terminal, run- Y...

Notes

Ubuntu : retain host-name change after a reboot

Posted on June 11, 2020 by Kj / 0 Comment

Problem: The newly set hostname reverts back to older one after reboot Reason : Hostname is reset by cloud-init Solution : Inactivate cloud-init. On terminal, k...

Notes/Technology

Fixing Cqlsh Import Error

Posted on August 22, 2019 by Kj / 0 Comment

Problem: Running Cqlsh exits with the error : Fix: Set right python path KjKj [/.] Sreekumar programs computers as a hobby and profession. Into programming from...

Posts navigation

1 2 … 9 Next »

Recent Posts

  • Fix : Docker node down after restart
  • IP Telephony – bit rates of audio formats, and other notes
  • Fix: Cannot start container Subnet sandbox join failed error from docker
  • React Ajax call on load gives : “Error: Should not already be working.”
  • Fix : The repository ‘http://archive.ubuntu.com/ubuntu disco-backports Release’ no longer has a Release file.

Categories

  • Algorithms
  • Android Development
  • BoshServlet
  • C++ projects
  • Code Philosophies
  • Conversational AI
  • Machine Learning
  • Miscellaneous
  • Notes
  • Society
  • Technology

Meta

  • Log in
  • Entries feed
  • Comments feed
  • WordPress.org
© 2021 CodeMarvels
Powered by WordPress | Theme: Graphy by Themegraphy