React Ajax call on load gives : “Error: Should not already be working.”
Problem : On page refreshes, the ajax calls in the componentDidMount functions throws the error : “Error: Should not already be working.” Reason : P...
Category: Notes
Fix : The repository ‘http://archive.ubuntu.com/ubuntu disco-backports Release’ no longer has a Release file.
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...
Cannot connect to DB from a process inside Docker container ? This could fix it.
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...
Open ports in Ubuntu’s firewall using IP Tables
On the terminal, do the following to open port 80 [bash] sudo iptables -A INPUT -p tcp –dport 80 -j ACCEPT sudo iptables -F [/bash] Persisting the rule ch...
Make a new disk available in Ubuntu on AWS
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...
Ubuntu : retain host-name change after a reboot
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...
Fix for – W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/InRelease Temporary failure resolving ‘archive.ubuntu.com’
Problem: apt-get update gives an error : [bash] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/InRelease Temporary failure resolving ‘ar...
View logs and debug a docker service
To debug why a container within a docker stack didn’t start, these commands will help [bash] #list all processes docker service ls #note the id of ...
How to install Docker Compose on Ubuntu 18.04 LTS
Here’s how to install docker-compose on Ubuntu LTS : Open terminal and run these commands [bash] sudo curl -L "https://github.com/docker/compose/rele...
GCloud gives warning : `docker-credential-gcloud` not in system PATH
Problem : On an Ubuntu VM, the Docker pulls from Gcloud private repository give the error [bash] Error response from daemon: unauthorized: You don’t have ...