[HELP] Error response from daemon: invalid reference format

[conradwt]

When I execute

k3d cluster create --config k3d.yaml

k3d.yaml:

# k3d cluster create --config k3d.yaml
# https://k3d.io/v5.4.1/usage/configfile
kind: Simple
apiVersion: k3d.io/v1alpha4
metadata:
  name: test-cluster # cluster name
image: rancher/k3s:v1.25.7+k3s1
servers: 3 # control plane nodes
agents: 3 # worker nodes
ports:
  - port: 8082:30080
    nodeFilters:
      - agent:0
# options:
#   k3s:
#     extraServerArgs:
#     - --no-deploy=traefik

Note: The config file was implemented from the following working command line:

k3d cluster create test-cluster --agents 3 -p "8082:30080@agent:0" --servers 3 --wait

I'm getting the following error message:

INFO[0000] Using config file k3d.yaml (k3d.io/v1alpha4#simple) 
INFO[0000] Prep: Network                                
INFO[0000] Created network 'k3d-test-cluster'           
INFO[0000] Created image volume k3d-test-cluster-images 
INFO[0000] Starting new tools node...                   
INFO[0000] Creating initializing server node            
INFO[0000] Creating node 'k3d-test-cluster-server-0'    
ERRO[0000] Failed Cluster Creation: failed init node setup: failed to create node: runtime failed to create node 'k3d-test-cluster-server-0': failed to create container for node 'k3d-test-cluster-server-0': docker failed to create container 'k3d-test-cluster-server-0': Error response from daemon: invalid reference format 
ERRO[0000] Failed to create cluster >>> Rolling Back    
INFO[0000] Deleting cluster 'test-cluster'              
ERRO[0000] failed to get cluster: No nodes found for given cluster 
FATA[0000] Cluster creation FAILED, also FAILED to rollback changes! 

Finally, I'm using

K3d k3d version v5.4.9
k3s version v1.25.7-k3s1 (default)
Docker Desktop 4.17.0 (99724)

[iwilltry42]

Hi there 👋

Docker image names cannot contain +, so just change the line

image: rancher/k3s:v1.25.7+k3s1

to

image: rancher/k3s:v1.25.7-k3s1

[conradwt]

Great catch and thanks for the information.