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    Second / Third Network Device not active..

    With networking you can test part by part, :) your eth0 works, then you can try get eth0:0 working with one ip. If this works fully (pinging,traceroute,..) you can try bridging or adding eth0:1 and work you way further. Goodluck :)
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    Second / Third Network Device not active..

    i can't help much further, i tried explaining like i would do it. You can send an email to hetzner to get you a working example, I am sure they know their infrastructure a lot better then me.
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    Second / Third Network Device not active..

    configure your eth0 with the 5.x.x.205 ip => this worked in the beginning. bridge eth0:0 with vmbr0. This cant be done through the proxmox gui but must be done in the network interfaces file, as proxmox gui doesn't handle the alias( eth0:0) give the bridge the 5.x.x.220 address Try pinging it...
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    Datacenter Clustering with Virtual Router on Master Node

    @ghusson for interconnecting the servers and creating an overlay network i use tinc. It works like a charm!!! I tried ovs, the linux networking with GRE tunnels but it wasn't great and proxmox 4.4can'tt handle OSPF due to a kernel panic. so no failover I implemented Tinc...
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    Second / Third Network Device not active..

    If you bridge your eth0, you normally give the vmbr0 an ip and not the eth0 => this can lead to strange network behaviour. for the proxmox: I noticed you added the extra ip's with a /27 subnet or 255.255.255.224. I think you should add your extra addresses with a /32 or 255.255.255.255 subnet...
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    Second / Third Network Device not active..

    pulled this information from the hetzner documentation: https://wiki.hetzner.de/index.php/Zusaetzliche_IP-Adressen/en Individual addresses The assigned addresses can be configured as additional addresses on the network interface. To ensure the IP addresses are configured after a restart, the...
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    Datacenter Clustering with Virtual Router on Master Node

    I configured an HA cluster and also thought about Pfsense, as i was already familiar with it. But the moment you want an overlay network for you VM's so they can speak to each other you need a pfsense on each proxmox with virtuaIP (=> ovs doesn't work well with multicast) or the pfsense must...
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    Keepalived - Possible with OpenVZ

    Good to hear this works on proxmox. I already got my setup working with ucarp, because i needed to give KVM instances a public ip with a shared gateway accross the proxmox nodes. Maybe in the future i will tackle keepalived or plain CARP for balancing. thnqx for the information.
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    Keepalived - Possible with OpenVZ

    Supp, I am working on HA network solution and i was thinking of implementing carp or keepalived. Would you like to share your working configuration? I thought the linux networking acted funky with multicast needed vor the virtual ip's, and openvswitch is still a no go with multicast.
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    loading initial ramdisk hang, after reboot

    I tracked down the issue to a wrong network file. I have Openvswitch running along with the networking. A wrong configuration in the /etc/network/interfaces was the problem, this created the hang. Thnqx for the fast reply
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    loading initial ramdisk hang, after reboot

    If i acces the /boot folder, the following files are present: grub/ initrd vmlinuz vmlinuz-4.4.35-1-pve config-4.4.35-1-pve pve/ System.map-4.4.35-1-pve initrd.img-4.4.35-1-pve Where would other kernels be located? I can't upgrade, because i don't have a valid subscription yet. and...
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    loading initial ramdisk hang, after reboot

    I have a full pve envirement running with 3 nodes with block storage ceph for HA with packet (bare metal). The cluster was running great. Today i was working on an overlay network and after every change i rebooted the server (call me lazy). After 5 or 6 reboots the serer hang during boot. Packet...

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