Recovering cluster.yml and cluster.rkestate from kubeconfig

rke_recovery.sh

#!/bin/bash
echo "Building cluster_recovery.yml..."
echo "Working on Nodes..."
echo 'nodes:' > cluster_recovery.yml
kubectl --kubeconfig kube_config_cluster.yml -n kube-system get configmap full-cluster-state -o json | jq -r .data.\"full-cluster-state\" | jq -r .desiredState.rkeConfig.nodes | yq r - | sed 's/^/  /' | \
sed -e 's/internalAddress/internal_address/g' | \
sed -e 's/hostnameOverride/hostname_override/g' | \
sed -e 's/sshKeyPath/ssh_key_path/g' >> cluster_recovery.yml
echo "" >> cluster_recovery.yml

echo "Working on services..."
echo 'services:' >> cluster_recovery.yml
kubectl --kubeconfig kube_config_cluster.yml -n kube-system get configmap full-cluster-state -o json | jq -r .data.\"full-cluster-state\" | jq -r .desiredState.rkeConfig.services | yq r - | sed 's/^/  /' >> cluster_recovery.yml
echo "" >> cluster_recovery.yml

echo "Working on network..."
echo 'network:' >> cluster_recovery.yml
kubectl --kubeconfig kube_config_cluster.yml -n kube-system get configmap full-cluster-state -o json | jq -r .data.\"full-cluster-state\" | jq -r .desiredState.rkeConfig.network | yq r - | sed 's/^/  /' >> cluster_recovery.yml
echo "" >> cluster_recovery.yml

echo "Working on authentication..."
echo 'authentication:' >> cluster_recovery.yml
kubectl --kubeconfig kube_config_cluster.yml -n kube-system get configmap full-cluster-state -o json | jq -r .data.\"full-cluster-state\" | jq -r .desiredState.rkeConfig.authentication | yq r - | sed 's/^/  /' >> cluster_recovery.yml
echo "" >> cluster_recovery.yml

echo "Working on systemImages..."
echo 'system_images:' >> cluster_recovery.yml
kubectl --kubeconfig kube_config_cluster.yml -n kube-system get configmap full-cluster-state -o json | jq -r .data.\"full-cluster-state\" | jq -r .desiredState.rkeConfig.systemImages | yq r - | sed 's/^/  /' >> cluster_recovery.yml
echo "" >> cluster_recovery.yml

echo "Building cluster_recovery.rkestate..."
kubectl --kubeconfig kube_config_cluster.yml -n kube-system get configmap full-cluster-state -o json | jq -r .data.\"full-cluster-state\" | jq -r . > cluster_recovery.rkestate

echo "Running rke up..."
rke up --config cluster_recovery.yml

This is a life saver! A note for all who will use this in the future: be aware that when running rke up --config <file>.yml rke will consider this as a new cluster unless you have a kube_config_<file>.yml in the local directory. In case you already ran this once, it might make sense to check this answer

We are testing a new tool to fetch the kubconfig and rke state file from the cluster.
PR

git clone https://github.com/rancher/rke && cd rke && git fetch origin pull/2277/head:util && git checkout util && CROSS=true make build

NOTE: This is not for Production yet.

Hello, this is very good... but somehow it seems to retrieve only the informations about the master node of my single-master, three workers cluster.
Anyone noticed?
I must add that the original rke cluster installation (the one of which I lost cluster.yml file) had been performed via non-root user and non-standard SSH private key.
However, I was able to perform successfully an "rke etcd snapshot-save" using the output of the script as cluster.yml (amended for SSH connection parameters).

Thanks, this works for me

I needed to change
yq r -

into

yq -P

yq --version
yq (https://github.com/mikefarah/yq/) version 4.21.1

Thanks, this change worked for me.

I encounter the same issue. But in the first step there is no full-cluster-state in config map. crying...

I do not have full-cluster-state configmap in a working cluster, no idea also ? @litao3rd did you find another option?

@jrab66 You can run the command rke util get-state-file now to pull the state file from a working cluster.

I do not have full-cluster-state configmap in a working cluster, no idea also ? @litao3rd did you find another option?

nop...I rebuild the cluster