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...
Category: Notes
Fixing Cqlsh Import Error
Problem: Running Cqlsh exits with the error : Fix: Set right python path KjKj [/.] Sreekumar programs computers as a hobby and profession. Into programming from...
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 ...
Python print not displayed in docker console
Problem: Python print function not printing to display when running inside docker Reason: The python output is buffered. Solution: Run python (in the docker fi...
Spring boot and Hibernate Second Level cache giving NoCacheRegionFactoryAvailableException
Problem: Setting below in application.properties, [bash] hibernate.cache.use_second_level_cache=true hibernate.cache.hazelcast.use_native_client=true hibernate....
Linux: Copy files owned by a user to another folder
Example To copy all files owned by root in folder rpms to say folder docker-rpms, do this – [bash] find rpms -user root -exec cp -f {} docker-rpms/ \; [/b...
Openfire with Smack disconnects with error : You acknowledged stanzas that we didn’t send
Problem: After connecting, openfire servers disconnects from Smack client giving an exception as below – Connection XMPPTCPConnection[dhee@dheeyant...