Hi, I’m fairly new to Kubernetes. I am trying to learn and am trying to create set up to install Rancher.
I am using DigitalOcean CentOS8 VM. I tried many times, I did these steps. (After VM is provisioned)
- CentOS8
- RKE2 v1.27.11+rke2r1
- Rancher stable
I do this simple steps and result is always the same. I checked that ports are OK, nginx is OK, ingress is OK. And afaik this is just simple set up out of the box. What am I missing here? Any help would be greatly appreciated.
Configure NetworkManager to ignore calico/flannel related network interfaces
tee /etc/NetworkManager/conf.d/cni.conf <<EOF
[keyfile]
unmanaged-devices=interface-name:cni0;interface-name:flannel.1;interface-name:cali*
EOF
sudo systemctl restart NetworkManager
Disable swap
swapoff -a
sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
Ensure your system is up to date
dnf update -y
dnf install curl tar nano -y
localectl set-locale LANG=en_US.UTF-8
timedatectl set-timezone Europe/Ljubljana
dnf install chrony -y
systemctl enable --now chronyd
nfs-utils cryptsetup iscsi-initiator-utils
dnf install nfs-utils cryptsetup iscsi-initiator-utils -y
systemctl enable --now iscsid.service
dnf update -y
dnf clean all
RKE2
curl -sfL https://get.rke2.io | INSTALL_RKE2_VERSION=v1.27.11+rke2r1 sh -
systemctl enable --now rke2-server.service
Helm
curl -#L https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash`
Rancher, Jetstack Repo
helm repo add rancher-stable https://releases.rancher.com/server-charts/stable
helm repo add jetstack https://charts.jetstack.io
Cert manager
helm upgrade -i cert-manager jetstack/cert-manager -n cert-manager --create-namespace --set installCRDs=true
Install rancher
kubectl create namespace cattle-system
helm install rancher rancher-stable/rancher \
--namespace cattle-system \
--set hostname=droplet1.inharmonyapp.com \
--set bootstrapPassword=admin \
--set replicas=3
All pods starts, I can access my rancher dashboard, but my rancher pods are telling me:
2024/03/21 13:02:50 [ERROR] Failed to handle tunnel request from remote address 10.42.0.19:41130: response 400: cluster not found
2024/03/21 13:02:55 [ERROR] Failed to handle tunnel request from remote address 10.42.0.19:41138: response 400: cluster not found
2024/03/21 13:02:55 [ERROR] Failed to connect to peer wss://10.42.0.19/v3/connect [local ID=10.42.0.20]: websocket: bad handshake
2024/03/21 13:03:00 [ERROR] Failed to handle tunnel request from remote address 10.42.0.19:49782: response 400: cluster not found
2024/03/21 13:03:00 [ERROR] Failed to connect to peer wss://10.42.0.19/v3/connect [local ID=10.42.0.20]: websocket: bad handshake
2024/03/21 13:03:05 [ERROR] Failed to handle tunnel request from remote address 10.42.0.19:49794: response 400: cluster not found
2024/03/21 13:03:05 [ERROR] Failed to connect to peer wss://10.42.0.19/v3/connect [local ID=10.42.0.20]: websocket: bad handshake
2024/03/21 13:03:10 [ERROR] Failed to handle tunnel request from remote address 10.42.0.19:49842: response 400: cluster not found
2024/03/21 13:03:10 [ERROR] Failed to connect to peer wss://10.42.0.19/v3/connect [local ID=10.42.0.20]: websocket: bad handshake
2024/03/21 13:03:15 [ERROR] Failed to handle tunnel request from remote address 10.42.0.19:49856: response 400: cluster not found
2024/03/21 13:03:15 [ERROR] Failed to connect to peer wss://10.42.0.19/v3/connect [local ID=10.42.0.20]: websocket: bad handshake
2024/03/21 13:03:20 [ERROR] Failed to connect to peer wss://10.42.0.19/v3/connect [local ID=10.42.0.20]: websocket: bad handshake
2024/03/21 13:03:20 [ERROR] Failed to handle tunnel request from remote address 10.42.0.19:60958: response 400: cluster not found
Firewalld is not installed.
