Interview questions: 2020-12

• Terraform
• provider vs provisioner
• Load balancing
• Network Load Balancer vs Application Load Balancer 
• Networking
• Layer 1 vs Layer 4
• haproxy uses which layer?
• Database
• Mysql
• myisamchk
• what does it do?
• Open source databases: MySQL, Postgres, Mongodb
• 
  

iftop config

~/.iftoprc

interface: eth0 # The interface to monitor
log-scale: no # Use a logarithmic scale for bar graphs.
max-bandwidth: 2M # Fixes the maximum for the bar graph scale to bw, e.g. "10M". In bits
dns-resolution: yes # Controls reverse lookup of IP addresses.
port-display: on # Controls display of port numbers.
port-resolution: yes # Controls conversion of port numbers to service names.

git: delete local and remote branch

git branch -d feature/666

git push origin --delete feature/666

k8s ssl cert loading as secret

kubectl --cert=/tmp/tls.crt --key=/tmp/tls.key create secret tls tls-wc-ingress