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how to mount LVM2 partition

June 17, 2021
step to mount LVM logical volumn sudo apt-get install lvm2 #This step may or may not be required. sudo pvscan…
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how to configure minikube

June 17, 2021June 17, 2021
install kubectl sudo apt-get update && sudo apt-get install -y apt-transport-https curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add - echo…
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how to run VMs into kerbernetes

June 11, 2021June 16, 2021
why kubevirt or virtlet? both of Virtlet and KubeVirt address the needs of almost every development teams who have or…
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how to access VM console

June 4, 2021June 7, 2021
try to connect to VM console virsh list virsh console ID (enter) if you cannot access to VM console, login…
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adding IPMI user in commandline

June 4, 2021
#!/bin/sh # execute on jumphost # # default user per manufacturer # Dell : root/calvin # Oracle: root/changeme # HP…
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converting netmask to CIDR or vice verse

June 4, 2021
#!/bin/bash # convert netmask to CIDR (Classless Inter-Domain Routing) or vice verse # mask2cidr () { # Assumes there's no…
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how to wipe out hard disk or partition

June 4, 2021
fill disk blocks with zero or random values umount /dev/sdX dd if=/dev/zero of=/dev/sdX bs=1M dd if=/dev/urandom of=/dev/sdX bs=1M filling with…
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how to implement WAN-switching over OVS-DPDK in Ubuntu 14.04 and OpenStack kilo

June 4, 2021
WAN switching for static public IP cat wanSwitching-static.sh #!/bin/bash # # example values in case of d4's eth0 KERNEL_PORT_NAME="eth0" DPDK_PORT_NAME="dpdk0"…
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how to setup pktgen tool

June 4, 2021June 4, 2021
prepare hugepage in /etc/default/grub or /etc/dpdk/dpdk.conf and reboot install required packages including libpcap-dev sudo apt-get install libpcap-dev download and build…
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how to verify HW information

June 3, 2021
useful command for HW topology sudo apt install hwloc sudo lshw -class memory lstopo {file.txt | file.png | ...} check…
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