catatan

BGP Virtual IP

Jadi goals riset ini adalah bagaimana caranya membuat sebuah virtual ip yang bisa di reach oleh network kvm.

Photo by nbtrisna The gentle sway of penjor guides the way, a serene journey through Bali's heart.

Refrensi : https://docs.vultr.com/high-availability-on-vultr-with-floating-ip-and-bgp

Jadi goals riset ini adalah bagaimana caranya membuat sebuah virtual ip yang bisa di reach oleh network kvm. VirtualIP disini masih belum sempurna, karena beberapa kali pengetestan dan tuning buat pindah ke vm lain masih terdapat jeda yang sangat lumayan > 1 menit.

environment

Pakai OS Ubuntu 22.04 Server

VM Hostname	IP
rke-server-01	10.10.11.10
rke-server-02	10.10.11.11
rke-server-03	10.10.11.12
vip-rke	10.10.11.100
Kondisi awalnya terlihat kalau tidak terdapat ip `10.10.11.100` di dhcp-leases.


Di ping juga pastinya engga mau, karena belum di setup

Setup

Exec on all node

Install bird

sudo apt install bird

Add virtual ip di interface loopback.

sudo vim /etc/netplan/xx.yaml

network:
    ethernets:
        lo:
            addresses:
              - 127.0.0.1/8
              - ::1/128
              - 10.10.11.100/32

sudo netplan apply

Pastikan interface lo memiliki virtualip

config rke-server-01

sudo vim /etc/bird/bird.conf

# This is a minimal configuration file, which allows the bird daemon to start
# but will not cause anything else to happen.
#
# Please refer to the documentation in the bird-doc package or BIRD User's
# Guide on http://bird.network.cz/ for more information on configuring BIRD and
# adding routing protocols.

# Change this into your BIRD router ID. It's a world-wide unique identification
# of your router, usually one of router's IPv4 addresses.
router id 10.10.11.10;

# The Kernel protocol is not a real routing protocol. Instead of communicating
# with other routers in the network, it performs synchronization of BIRD's
# routing tables with the OS kernel.
protocol kernel {
        scan time 60;
        import none;
#       export all;   # Actually insert routes into the kernel routing table
}

# The Device protocol is not a real routing protocol. It doesn't generate any
# routes and it only serves as a module for getting information about network
# interfaces from the kernel. 
protocol device {
        scan time 60;
}

protocol direct {
        interface "lo";
}

protocol bgp uplink_1 {
    local as 64512;
    source address 10.10.11.10;
    import none;
    export all;
    graceful restart on;
    neighbor 10.10.11.11 as 64512;
}


protocol bgp uplink_2 {
    local as 64512;
    source address 10.10.11.10;
    import none;
    export all;
    graceful restart on;
    neighbor 10.10.11.12 as 64512;
}

Enable bird

sudo enable --now bird

config rke-server-02

sudo vim /etc/bird/bird.conf

# This is a minimal configuration file, which allows the bird daemon to start
# but will not cause anything else to happen.
#
# Please refer to the documentation in the bird-doc package or BIRD User's
# Guide on http://bird.network.cz/ for more information on configuring BIRD and
# adding routing protocols.

# Change this into your BIRD router ID. It's a world-wide unique identification
# of your router, usually one of router's IPv4 addresses.
router id 10.10.11.11;

# The Kernel protocol is not a real routing protocol. Instead of communicating
# with other routers in the network, it performs synchronization of BIRD's
# routing tables with the OS kernel.
protocol kernel {
        scan time 60;
        import none;
#       export all;   # Actually insert routes into the kernel routing table
}

# The Device protocol is not a real routing protocol. It doesn't generate any
# routes and it only serves as a module for getting information about network
# interfaces from the kernel. 
protocol device {
        scan time 60;
}

protocol direct {
        interface "lo";
}

protocol bgp uplink_1 {
    local as 64512;
    source address 10.10.11.11;
    import none;
    export all;
    graceful restart on; 
    neighbor 10.10.11.10 as 64512;
}


protocol bgp uplink_2 {
    local as 64512;
    source address 10.10.11.11;
    import none;
    export all;
    graceful restart on;
    neighbor 10.10.11.12 as 64512;
}

Enable service bird

sudo systemctl enable --now bird

config rke-server-03

sudo vim /etc/bird/bird.conf

# This is a minimal configuration file, which allows the bird daemon to start
# but will not cause anything else to happen.
#
# Please refer to the documentation in the bird-doc package or BIRD User's
# Guide on http://bird.network.cz/ for more information on configuring BIRD and
# adding routing protocols.

# Change this into your BIRD router ID. It's a world-wide unique identification
# of your router, usually one of router's IPv4 addresses.
router id 10.10.11.12;

# The Kernel protocol is not a real routing protocol. Instead of communicating
# with other routers in the network, it performs synchronization of BIRD's
# routing tables with the OS kernel.
protocol kernel {
        scan time 60;
        import none;
#       export all;   # Actually insert routes into the kernel routing table
}

# The Device protocol is not a real routing protocol. It doesn't generate any
# routes and it only serves as a module for getting information about network
# interfaces from the kernel. 
protocol device {
        scan time 60;
}

protocol direct {
        interface "lo";
}

protocol bgp uplink_1 {
    local as 64512;
    source address 10.10.11.12;
    import none;
    export all;
    graceful restart on; 
    neighbor 10.10.11.10 as 64512;
}


protocol bgp uplink_2 {
    local as 64512;
    source address 10.10.11.12;
    import none;
    export all;
    graceful restart on;
    neighbor 10.10.11.11 as 64512;
}

Enable service bgp