Need help getting started

[originaltrini0]

Hello:

I am trying out LoxiLB in a stand-alone deployment to route connections to cluster nodes.

My environment:
Fedora 36 virtual machine
Podman 4.4.1

The VM has multiple network interfaces:

$ ip -br link
lo               UNKNOWN        00:00:00:00:00:00 <LOOPBACK,UP,LOWER_UP>
eth0             UP             bc:24:11:4c:73:f4 <BROADCAST,MULTICAST,UP,LOWER_UP>
eth1             UP             bc:24:11:4b:02:54 <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP>
vlan.254@eth1    UP             bc:24:11:4b:02:54 <BROADCAST,MULTICAST,UP,LOWER_UP>
vlan.108@eth1    UP             bc:24:11:4b:02:54 <BROADCAST,MULTICAST,UP,LOWER_UP>
vlan.100@eth1    UP             bc:24:11:4b:02:54 <BROADCAST,MULTICAST,UP,LOWER_UP>

I created three macvlan interfaces for the LoxiLB container:

$ sudo podman network ls
NETWORK ID    NAME        DRIVER
2f259bab93aa  podman      bridge
8aa201e03d37  vlan.100    macvlan
44de3794fc1d  vlan.108    macvlan
f671b7f78af0  vlan.254    macvlan

I assigned IPs to the container's network interfaces and validated that I can use ping and netcat against the intended endpoints from the container:

root@39d570d2da48:/# ip -br a
lo               UNKNOWN        127.0.0.1/8 ::1/128
eth1@if6         UP             192.168.100.30/25 fe80::3498:f1ff:fe38:94c3/64
eth0@if5         UP             192.168.108.30/25 fe80::7cc6:2bff:fe58:b15/64
eth2@if4         UP             192.168.254.30/26 fe80::b075:71ff:feb0:282d/64
llb0             UNKNOWN        fe80::ecfa:dcff:fe48:875f/64

root@39d570d2da48:/# ping -c 3 192.168.100.10
PING 192.168.100.10 (192.168.100.10) 56(84) bytes of data.
64 bytes from 192.168.100.10: icmp_seq=1 ttl=64 time=0.315 ms
64 bytes from 192.168.100.10: icmp_seq=2 ttl=64 time=0.299 ms
64 bytes from 192.168.100.10: icmp_seq=3 ttl=64 time=0.319 ms

--- 192.168.100.10 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2083ms
rtt min/avg/max/mdev = 0.299/0.311/0.319/0.008 ms

root@39d570d2da48:/# nc -vz 192.168.100.10 4646
Connection to 192.168.100.10 4646 port [tcp/*] succeeded!

I then created a basic load balancer configuration:

root@39d570d2da48:/# loxicmd get lb -o json
{
    "lbAttr": [
        {
            "serviceArguments": {
                "externalIP": "192.168.254.30",
                "port": 4646,
                "protocol": "tcp",
                "sel": 0,
                "mode": 0,
                "BGP": false,
                "Monitor": false,
                "inactiveTimeOut": 240,
                "block": 0
            },
            "secondaryIPs": null,
            "endpoints": [
                {
                    "endpointIP": "192.168.100.10",
                    "targetPort": 4646,
                    "weight": 1,
                    "state": "active",
                    "counter": "18:1388"
                },
                {
                    "endpointIP": "192.168.100.11",
                    "targetPort": 4646,
                    "weight": 1,
                    "state": "active",
                    "counter": "19:1466"
                },
                {
                    "endpointIP": "192.168.100.12",
                    "targetPort": 4646,
                    "weight": 1,
                    "state": "active",
                    "counter": "18:1388"
                }
            ]
        }
    ]
}

If I attempt to connect to 192.168.254.30:4646, the connection times out.
I have a volume bind for /dev/log, but the file is empty. How can I turn on logging so that I may troubleshoot further?
Could anyone advise what I am doing incorrectly, which is preventing me from load balancing these endpoints?

Thank you

[TrekkieCoder]

Hi @originaltrini0

Based on your topology, I suggest you create the load-balancer rule with --mode=onearm and double check once. For logging, you could probably check podman logs -f <docker-name>.

[originaltrini0]

Hi @TrekkieCoder:

Thanks for both suggestions! Setting the NAT mode is working for me now. I will have to read up on the various modes.