kernel tuning for cloud VM

[Jeff Peng]

Hello

I am using the VMs from big providers such as AWS and Azure.
most of the VMs are 2core/4gb ram/100gb disk etc.
They are used for running the regular web services (java, php etc), with
debian 11 installed.

Every VM I just use the default system configuration.
Do I need to update some kernel config for the VMs? such as
socket_buffer, max_fd etc. what's the suggested options for this kind of
VM?

Thanks.

[jeremy ardley]

Post by Jeff Peng
Hello
I am using the VMs from big providers such as AWS and Azure.
most of the VMs are 2core/4gb ram/100gb disk etc.
They are used for running the regular web services (java, php etc),
with debian 11 installed.
Every VM I just use the default system configuration.
Do I need to update some kernel config for the VMs? such as
socket_buffer, max_fd etc. what's the suggested options for this kind
of VM?
Thanks.

If your applications work correctly and with acceptable response time
then don't change anything.

Jeremy

[t***@tuxteam.de]

Post by Jeff Peng
Hello
I am using the VMs from big providers such as AWS and Azure.

I'd ask AWS/Azure support for that. They do knowi their infrastructure
best, we hope, and, after all, they are taking money for their service.

Cheers

[Geert Stappers]

Post by t***@tuxteam.de

Post by Jeff Peng
Hello
I am using the VMs from big providers such as AWS and Azure.

I'd ask AWS/Azure support for that.

Yes, talking _with_ your vendor is the way to go.

Post by t***@tuxteam.de
They do known their infrastructure best, we hope, and, after all,
they are taking money for their service.

Text from https://cloud.debian.org/images/cloud/

Debian Official Cloud Images

In this page you can find the Debian cloud images provided by the Debian
Cloud Team for some cloud providers. End users do not need to download
these images, as they are usually provided by their cloud providers.



How can I verify my download is correct and exactly what has been
created by Debian?

For the current official images (in the per-distribution directories),
the safest method is to download the image and checksum files over TLS
from cloud.debian.org or cdimage.debian.org. These names support DNSSEC,
so a validating resolver can ensure that a client is connected to a
Debian host. And TLS ensures that the data is not manipulated in flight.

The legacy OpenStack images (in the OpenStack/ directory) provide
checksums and signatures. See SHA512SUMS.sign, etc. For more information
about the verification steps, read the verification guide

If you're interested in contributing checksum signatures for the current
images, please reach us on the list: debian-cloud at lists.debian.org.



Other questions?

Questions can be forwarded to the Debian Cloud Team: debian-cloud
at lists.debian.org.



Text from me

Invest in win-win-situations


Groeten
Geert Stappers

[Michael Kjörling]

Post by Jeff Peng
debian 11 installed.

Keep in mind that Debian 11 will be out of oldstable in about a year,
with the release of 13/Trixie; and it will be out of security support
in a few weeks, with the transition to long-term support. Depending on
the complexity of your setup, you may want to start planning the
upgrade process. (I assume that there is some reason why you haven't
yet upgraded to Debian 12.)

[Jeff Peng]

many java dev ecosystem (such as big data stacks) are in debian 11.
it's hard to upgrade to 12 at this time.

Thanks.

Post by Michael Kjörling
Keep in mind that Debian 11 will be out of oldstable in about a year,
with the release of 13/Trixie; and it will be out of security support
in a few weeks, with the transition to long-term support. Depending on
the complexity of your setup, you may want to start planning the
upgrade process. (I assume that there is some reason why you haven't
yet upgraded to Debian 12.)