linux, devops, sre, cloud, virtualization, containers, performance tunning, golang…
Jesień Linuksowa 2013
Tym razem po drugiej stronie mikrofonu: Zaopiekuj się moimi logami
Zerofree your filesystem
Lets assume that you have file image: dd if=/dev/zero of=file.1 bs=4k count=128 on top of it you create filesystem ext3/ext4
Some notes about memory ballooning in VMware
Couple days ago I found out that memory usage grow rapidly on one server.
Manage your hard disks
Make one step forward after rediscovering newly added hard disk, simply how to resize it.
Sign your scripts
Remote command execution from one host to another is nothing new in more complex infrastructure.
VMware disk cloning
Using free VMware vSphere Hypervisor doesn’t give us a chance to easily clone virtual machines disks and cope with thin provision disks.
linux nocache idea
Each time when you read file it’s content is put into cache:
cisco tips
replace default escape character (ctrl+shift+6) to ctrl+c: line vty 0 4 escape-character 3 show logging timestamps in configured timezone service timestamps log datetime localtime year secure your configuration http://www.
tar diff
Easy way to find out if something changed since my last tar backup:
cisco config archive doing
More or less about archiving router configuration is presented on: