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Description
What is the issue?
When trying to use the LoadBalancer or ExternalName services with the Kubernetes operator, the proxy container that gets created fails to start and prints out the following:
boot: 2024/01/11 01:36:41 Unable to create tuntap device file: operation not permitted
It seems like for some reason the securityContext the operator gives the pod with NET_ADMIN
isn't enough for my setup.
I modified this file to look like this
# This file is not a complete manifest, it's a skeleton that the operator embeds
# at build time and then uses to construct Tailscale proxy pods.
apiVersion: apps/v1
kind: StatefulSet
metadata: {}
spec:
replicas: 1
template:
metadata:
deletionGracePeriodSeconds: 10
spec:
serviceAccountName: proxies
initContainers:
- name: sysctler
securityContext:
privileged: true
command: ["/bin/sh"]
args:
- -c
- sysctl -w net.ipv4.ip_forward=1 net.ipv6.conf.all.forwarding=1
resources:
requests:
cpu: 1m
memory: 1Mi
containers:
- name: tailscale
imagePullPolicy: Always
env:
- name: TS_USERSPACE
value: "false"
- name: TS_AUTH_ONCE
value: "true"
securityContext:
privileged: true
and after building an image and using it I was able to use the LoadBalancer and ExternalName the way the documentation describes.
Steps to reproduce
- Install the tailscale operator helm chart
- Create an ExternalName or Loadbalancer:
apiVersion: v1
kind: Service
metadata:
annotations:
tailscale.com/tailnet-fqdn: service-name.example-name.ts.net
name: service-name
spec:
externalName: placeholder
type: ExternalName
or
apiVersion: v1
kind: Service
metadata:
name: example-service
spec:
type: LoadBalancer
loadBalancerClass: tailscale
ports:
- name: http
port: 8888
protocol: TCP
targetPort: http
selector:
app.kubernetes.io/instance: example
app.kubernetes.io/name: example
Are there any recent changes that introduced the issue?
I don't know. I just recently started using tailscale.
OS
Linux, Other
OS version
Fedora 38
Tailscale version
1.56.1
Other software
Kubernetes: v1.26.5
Crio: 1.26.3
Bug report
BUG-42e65eedd3327119eb9fd14521e340d737025b2302499169c670a093e8bc4b98-20240111011724Z-21eb645710405b28
aasseman and fracek