WadOps

1. Extend hard disk on virtualisation manager
2. Force linux kernel to rescan disks
   • List storage devices ls /sys/class/scsi_device/
   • Put the devices listed, in this command echo 1 > /sys/class/scsi_device/X\:X\:X\:X/device/rescan
     • For example echo 1 > /sys/class/scsi_device/0\:0\:0\:0/device/rescan
3. Extend physical volume
   • Execute fdisk /dev/sdx ^{sdx: primary disk}
     • Either create a new partition or recreate an existing one

       • Command (m for help): d _{start here for recreating} >

WadOps

SSH Key Generation

• generate ssh key by this command ssh-keygen -t rsa -b 4096 -N '' -f ~/.ssh/id_rsa
  • -t rsa type of key rsa
  • -b 4096 byte number 4096
  • -N '' the passphrase, we leave it empty
  • -f ~/.ssh/id_rsa key file name, we leave the default name

SSH Key installation

• from client server
• we send local key to remote server ssh-copy-id $USERNAME@$REMOTESERVER, password authentication is required

WadOps

Debian-based

• Copy the .crt file to /usr/local/share/ca-certificates/
• Use this commande to update the store update-ca-certificates
• Check if the CA cert has been added openssl crl2pkcs7 -nocrl -certfile /etc/ssl/certs/ca-certificates.crt | openssl pkcs7 -print_certs -noout | grep $CERTCN

RPM-based

• Copy the .crt file to /etc/pki/ca-trust/source/anchors/
• Use this commande to update the store update-ca-trust extract
• Check if the CA cert has been added openssl crl2pkcs7 -nocrl -certfile /etc/ssl/certs/ca-bundle.crt | openssl pkcs7 -print_certs -noout | grep $CERTCN