https://cloud.google.com/solutions/image-management-best-practices isn't helpful.
Should I recreate infrastructure from new images or sudo apt dist-upgrade?
Some packages (like Postgree) require to tune kernel parameters for better performance.
For this reason I definitely can't use containers (like Docker/CoreOS).
But what about KVM? Should I rent bare metal or it is possible to tune kernel parameters inside KVM box?
Consider KVM hosting offers much cheaper than bare metal servers...
I get VPS with KVM virtualisation (server for hosting services).
I remove most of desktop services (like dbus, consolekit, xorg) because of security and stability concern.
Guest run on virtualised hardware and ACPI table is emulated. Guest is not supposed to be suspend or hibernated.
I wonder are there a need for acpid?
According to aptitude package manager acpid is not a base packages and removing it doesn't broke dependencies.
Recently I bought low cost (1$/m, 256 MiB) VPS based on OpenVZ virtualization. There are pre-built guest Debian 7.0.
I like stay with more recent Debian stable release - 8.0.
Is it safe to:
sed -i 's/wheezy/stable/g' /etc/apt/sources.list
apt-get update
apt-get upgrade # actually I do that
# as package list has only userland soft
apt-get dist-upgrade # <== but afraid this
taking in mind that we under OpenVZ container?
What packages is not allowed to replace in OpenVZ container? libc? linux-image?
UPDATE My /etc/inittab and /boot/* empty. Seems that I also restricted in config file modifications...