Related to DHCP and Open Stack:
DHCP on Open Stack
More details may be seen on:
1. OpenStack --> DHCP (dnsmasq)
2. Networking-Nova
3. Details on design (dnsmasq+network namespaces inside Open Stack)
DHCP support will be great (inside VLAN for example).
So, DHCP support is crucial in an environment where network segmentation is made on an easy way (VLAN). In my case, simple dnsmasq is great for that job. DNS service inside (VLAN) is also welcome.
As i remember on Open Stack it is done in a...
Hello.
One and easy solution for isolating CPU cores from task/process scheduler is an option that you can use on kernel, and it must be defined in GRUB(2).
This option is: isolcpus
For example, if you want to reserve CPU cores 0 and 1, just add this opction at the end of the grub config file...
Hello.
I just want to understand the standard OpenvSwitch/Linux native interfaces used in Proxmox VE, when using SDN/VNets:
VNetINT is name of my VNet
Looking at the OpenvSwitch level:
ovs-vsctl list interface | egrep "^name|^status|^type"
name : vmbr0 --> This is a Bridge...
Maybe to late, but (answer from VMware):
It looks that VMXNET3 is not emulated but using some kind of paravirtualization (at least when using on ESXi, not sure how it may work on KVM/QEMU environment --> it may be emulated or?).
On the other side VirtIO s entirely paravirtualized (no...
So in the future it will be available as an (advanced) option [did not read the diff/changes in code]?.
P.S. I assume that IOMMU part in GRUB2 kernel configuration will also be added (for Intel: intel_iommu=on and eventually: iommu=pt) ?
Hello.
Since new kernel (5.14) supports VirtIO-IOMMU, maybe it would be a nice one to have it as an advanced option to use (as option: enable/disable).
Linux kernel 5.14. and VirtIO-IOMMU
More details can be found here:
QEMU - VT-d (IOMMU)
VirtIO-IOMMU explained
Br,
Hrvoje.
For now, i have no problems, but reading that it is in use in VMware and OpenStack, i was thinking that there must be a bigger reason for it (for example it is "lighter" on MAC learning etc.)
Multicast within VXLAN is a very good option; nicely described here:
https://www.slideshare.net/enakai/how-vxlan-works-on-linux
And here (on VMware side, but it is the same as in may be in Proxmox VE) is the good introductions of the issues with/without VXLAN multicast...
Hello.
As i find out, some examples related to VXLAN and Multicast can be found here (didn't test it):
https://git.proxmox.com/?p=pve-docs.git;a=blob_plain;f=vxlan-and-evpn.adoc;hb=HEAD
As i understand the config, the difference is (inside VXLAN interface section):
In Unicast:
iface vxlan2...
Hello.
When changing /etc/nova/nova.conf file on all Compute nodes:
reserved_host_memory_mb=8192 # This is 8GB
reserved_host_disk_mb=10000 # This is 100GB
reserved_host_cpus=2
... and restarting nova service.
So when we look on the OpenStack, after above reservation is done on all...
Hello.
So as it is possible on OpenStack and VMware (ESXi), primary for the system or even specific Host/Hypervisor/physical machines, on which you do not want to overprovision VMs/LXcs.
In practice when you have a need to host the guest (VMs or LXC containers) that can not be overprovisioned...
For example, OpenStack on every Compute node (one with Hypervisor) had a config file related to Hypervisor/Host specific configuration/tunning.
Specificaly this file is named: /etc/nova/nova.conf
And it has (among the other things) three sections like this one (with which you can reserve...
Hello.
I have a question related to the Proxmox VE nodes (hardware/bare metal).
Are there any possibility to reserve some hardware resources for Hypervisor itself, like:
Reserved amount of RAM
Reserved CPU cores
Reserved disk spaces (if needed)
Similar as it is possible on OpenStack...
Advantage may be removing one layer (bridge interface) and therefore speed things up and having "lighter" configuration :)
... as i understand from IBM presentation there is speed up on net communication between VMs on the same node:
They (IBM) comment the improvement using MACVTAP: HERE
(There...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.