kubectl
kubectl command is used to manage Kubernetes Clusters. To install kubectl on Linux, run wget https://raw.githubusercontent.com/serverok/server-setup/master/install/kubectl.sh bash kubectl.sh On Ubuntu, you can…
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Create Kubernetes cluser using gcloud
Login to gcloud with gcloud auth login Set default region gcloud config set compute/zone us-central1-a To create a cluser, run gcloud container…
Migrate Emails using imapcopy
imapcopy is a program to copy mails from one IMAP mailbox to another. I was using this for email migrations. But for…
PostgreSQL List all databases
To list all databases in the PostgreSQL database, first connect to the PostgreSQL database using psql command Now run This will list…
Disable TLSv1 in Nginx
To disable TLSv1 in nginx, add ssl_protocols TLSv1.1 TLSv1.2; in your server config. if you are using letsencrypt SSL, edit file vi…
Nginx Rails Origin header didn’t match request.base_url
After installing SSL on Nginx server, rails application login page stopped working. On log file (log/production.log), found following error HTTP Origin header…
online learning
https://bigbluebutton.org https://www.canvaslms.com https://moodle.org Interactive Coding https://github.com/datacamp/datacamp-light
Install ffmpeg on Ubuntu
To install ffmpeg 4 on Ubuntu, you can use PPA https://launchpad.net/~jonathonf/+archive/ubuntu/ffmpeg-4 apt install software-properties-common -y add-apt-repository ppa:jonathonf/ffmpeg-4 -y Now install ffmpeg with…
CloudLinux EasyApache 4 Profile Missing
On CloudLinux server, EasyApache profile was missing. WHM shows following error message Please run “yum install ea-profiles-cpanel” to install the default cPanel…
Sending Email with telnet
To send an email with telent, run telnet MAIL_SERVER_IP 25 On the prompt, type the following ehlo localhost mail from: rcpt to:…
Install Squid Proxy Server
Proxy server allows hiding your IP address. You can find the Squid Proxy Installer script at https://github.com/serverok/squid-proxy-installer The script supports the following…