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# k3d
a
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w
Hey! I cannot help you on the host level setup, but I can tell you that the 
svclb*
pods are from the K3s built-in service loadbalancer implementation. That's a way to provide services with 
type: LoadBalancer
in K3s. Basically it deploys proxy pods to the nodes (k3s containers in the case of k3s) with 
hostPort
bindings.
d
Hi @wide-garage-9465! Thanks
w
I guess you need to tell the Kubelet/K3s that it's ok to use that sysctl via 
--allowed-unsafe-sysctls=net.ipv4.ip_forward
(passed in as a k3s-arg). I wonder why this would be required though. How did you create the cluster and how did you join the node? Can you paste the commands here, please?
d
Yes! I created the cluster in an empty ubuntu 24 server, few weeks ago, using default setup syntax: 
curl -sfL <https://get.k3s.io> | sh -
. Today I've installed k3d in my local PC using 
wget -q -O - <https://raw.githubusercontent.com/k3d-io/k3d/main/install.sh> | bash
, then I ran 
k3d node create k3d-arch-01 -c <https://url-to-server:6443> -t very-l0ng-tok3n
w
Ah, I didn't get that part and thought the existing setup was also in k3d. FYI: distributed clusters with k3d are not really supported (with some extra config you can certainly make them work though - we just haven't gotten around to making it automatic in k3d). I'd try creating the node with 
--k3s-arg '--kubelet-arg=allowed-unsafe-sysctls=net.ipv4.ip_forward'
d
I'll try it out and report in here. I also got a little confuse when you showed the arg for the first time, like 'in current cluster or in new node?'. It's clear now 😃
--k3s-arg
is documented in k3d.io docs, but my installed CLI says 
unknown flag: --k3s-arg
. Running 
k3d node create --help
also does not show this flag in list. There's a second flag also not available in my system, it's 
--runtime-ulimit
. I'm using k3d v5.0.0
wow, I'm really outdated
w
Yeah, quite a bit 😅
d
I see that k3d docs allow you to select the version, I'll do it. I just didn't expect the default syntax to provide me 5.0.0
edit: I'm pretty sure I copied the wrong example from the docs and if I've used the default syntax it would be the most recent release, actually
I tried creating the node again, still without the arg, to be sure that the issue I was facing wasn't just using a very old version of k3d. Now I've got the following error message: failed to add 1 node(s) to the remote cluster 'https://local-ip:6443': failed to add one or more nodes: failed to run node 'k3d-k3d-arch-02-0': failed to start node 'k3d-k3d-arch-02-0': failed to enable k3d fixes: Cannot enable DNS fix, as Host Gateway IP is missing!
@wide-garage-9465 I verified that this message applies both to using --k3s-arg and not using it, so it probably refers to some network issue I have in my lan
w
Yeah that's something different. Probably related to trying to connect to a remote K3s cluster. I would have to try it, but here are quite a few open issues open for distributed clusters with k3d.
d
Good point, I'll take a look at the open issues too
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