docker / limit logs file size and number of files

vi /etc/docker/deamon.json

add code:

{
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "50m",
    "max-file": "3"
  }
}


systemctl stop docker
sytsemctl start docker

Verify SSL certificate from HTTPS server on remote linux

openssl s_client -connect site.com:443 2>/dev/null | openssl x509 -noout -dates