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Proxmox NAT Php_friends, LXC Works, KVM didn't
Dear all, I need some help for this
I bought server from php-friends https://www.lowendtalk.com/discussion/156207/2-dedicated-cores-10-gb-ram-40-gb-ssd-2tb-1-gbit-s-for-6-month/p1
And then I install proxmox from debian 9.5 template. I have /etc/network/interface below
auto lo
iface lo inet loopback
# Already exist from phpfriend template
auto eth0
iface eth0 inet static
address x.x.x.x
netmask 255.255.255.0
gateway x.x.x.x
dns-nameservers x.x.x.x
up ip addr add x:x:x:x/64 dev eth0
up ip -6 route add x:x:x:x dev eth0
up ip -6 route add default via x:x:x:x
# Additional NAT bridge I want to add
auto vmbr1
iface vmbr1 inet static
address 10.20.30.1
netmask 255.255.255.0
bridge-ports none
bridge-stp off
bridge-fd 0
post-up echo 1 > /proc/sys/net/ipv4/ip_forward
post-up iptables -t nat -A POSTROUTING -s '10.20.30.0/24' -o eth0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '10.20.30.0/24' -o eth0 -j MASQUERADE
I add guest config below, both for KVM and LXC
IP: 10.20.30.3 NETMASK: 255.255.255.0 GATEWAY: 10.20.30.1
Configuration above works for LXC with centos template, but it didn't work for KVM. I also read https://www.lowendtalk.com/discussion/comment/2822339/#Comment_2822339 and I think my config should be okay. Am I miss something?
Thank you.
Comments
this works for me
in your vm's use vmbr1 as the bridge - you may need to reboot all your pc's
and
laptops
and
you mobiles
and
did you check for the naming of the network device in your kvm guest? what OS did you install and how (netinst etc.?)
Memorable ip
Hi Ehab,
After I reboot the host server with my initial config, finally it works
Thank you!
I have 2 question here:
1. After I edit /etc/network/interface, I always systemctl restart networking. What is the different with full reboot on host node?
2. You have
iface ens3 inet manual (create new vmbr0 for the public IP)and I haveiface eth0 inet static (without creating vmbr0 for public IP), what is the different? Long time ago I also usevmbr0 with public IP, but for now I don't create it because I think they are same.Hi Falzo, thank you for your comment on every (or nearly all) of proxmox thread that need help, but it seems that @ehab is quicker today
Do you mean 10.20.30.0 ?
i think promox has a network temp file and that gets applied after reboot... i can be wrong here.
its just name
Falzo is the master
think about it that way: a 'restart' of the network tries to unload the network configuration based on the configs. so if you changed something (manually), that restart might not be able to remove everything old from the IP/route settings correctly, because it simply lacks all the informations.
as a result applying the new settings might also not work completly because of things that are stuck or not fully unloaded.
a reboot instead really loads everything for the network from scratch without orphaned stuff in the tables ;-)
that's true, at least if you change the settings via the proxmox control panel
Proxmox VM on VPS VM? What's the point of this?
Memorable ip
yes
Splitting service, 1 service on 1 VM, and more easy to setup full disk encryption from proxmox VNC. Somehow I can't load iso from php friends panel and I'm too lazy to open ticket
Actually I prefer using docker, but I need the full disk encryption, and also my service comes with autoinstaller script to install from scratch and I don't have time to custom the script so that 2 service can be deployed in one VM
From security perspective I think it also good to have 1 public IP to keep than I separate my service into 2 vps with public IP for each of them
Just adopt it
do you know of a better "easy" ui to manage lxc's or kvm's.
For KVM, it's easier for me to do on vmmanager 5 kvm. I can work with ProxMox and writes the manuals on the my site.
It is not the panel that surprises me, but the server under the panel surprises me.
Installing proxmox on vServer: https://php-friends.de/vserver-ssd/vserver-fruehlingsspecial-2019-ssd
This is how to put a VPS panel on a VPS to cut a VPS.
i didn't know about vmmanager before. i will not pay unless i am doing business.
virt-install
Let me know the performance of the KVM inside a KVM with 1500 benchmark.
in your opinion what is the minimum?
Well, first you have the overhead since KVM in KVM.
Second, I would not go below 3k benchmark or 8gig of memory to run any KVM's on it.
Sure it works but meh, the speeds wont be that good.
What benchmark script do you want to run?