Unix Philosophy
- Small is beautiful.
- Make each program do one thing well.
- Build a prototype as soon as possible.
- Choose portability over efficiency.
- Store data in flat text files.
- Use software leverage to your advantage.
- Use shell scripts to increase leverage and portability.
- Avoid captive user interfaces.
- Make every program a filter.
Настройка рабочего окружения
- Настройка VMware Workstation 11
- Установка CentOS 6.6 x64 minimal
- Настройка сети
- Настройка пользователей
- Настройка SSH
- Установка ESXi 5.5
- Настройка сети
- Настройка хранилища
Выключение и перезагрузка
Linux
#Выключение shutdown -h -P now # halt - Power #Перезагрузка shutdown -h -r now # halt - reset
UNIX
Shutdown -g <time in seconds to shutdown> -i <initstate; state=5 - power off, state=6 - reboot>
#Выключение shutdown -g 0 -i 5 # Power off #Перезагрузка shutdown -g 0 -i 6 # Reboot
Вложенная виртуализация
ESXi 5.5
Virtualized HV is fully supported for virtual hardware version 9 or 10 VMs on hosts that support Intel VT-x and EPT or AMD-V and RVI.
OS Profile type: ESXi.
KVM
KVM requires hardware-assisted virtualization, so it can only be run under ESXi 5.0, Workstation 8, Player 4 or Fusion 4 (or later). KVM performs relatively poorly as a guest hypervisor on Intel CPUs using virtualized Intel VT-x. Performance is improved with Linux kernel versions 3.0 and greater.
Under some VMware products, libvirtd hangs awaiting completion of a dmidecode child process. If this happens, you will be unable to connect to the local hypervisor. A workaround is to disable CPU hot-add for the outer VM with the following configuration option:
vcpu.hotadd = FALSE