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docs(talos): warn against changing op: on the machine files block #575

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docs(talos): warn against changing op: on the machine files block #575

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893098a
docs(talos): warn against changing op: on the machine files block
lexfrei Jun 11, 2026
b4c39ff
docs(talos): clarify the op: create warning wording
lexfrei Jun 22, 2026
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4 changes: 4 additions & 0 deletions content/en/docs/next/install/kubernetes/talos-bootstrap.md
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Expand Up @@ -102,6 +102,10 @@ talos-bootstrap --help
- 10.96.0.0/16
```

{{% alert title="Do not change op: on these entries" color="warning" %}}
Talos rejects `op: create` for any file outside `/var`, returning the error `create operation not allowed outside of /var` — the only exception is the special-cased `/etc/cri/conf.d/20-customization.part`. Because `/etc/lvm/lvm.conf` already exists on the node, it must use `op: overwrite`. Changing the op (or pointing `create` at another `/etc` path) fails the `WriteUserFiles` boot step: the node pauses and enters a reboot loop, and `talosctl bootstrap` reports only `bootstrap is not available yet` with no obvious cause.
{{% /alert %}}

1. Make another configuration patch file `patch-controlplane.yaml` with settings exclusive to control plane nodes:

```yaml
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4 changes: 4 additions & 0 deletions content/en/docs/next/install/kubernetes/talosctl.md
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Expand Up @@ -126,6 +126,10 @@ Discovered open port 50000/tcp on 192.168.123.13
- 10.96.0.0/16
```

{{% alert title="Do not change op: on these entries" color="warning" %}}
Talos rejects `op: create` for any file outside `/var`, returning the error `create operation not allowed outside of /var` — the only exception is the special-cased `/etc/cri/conf.d/20-customization.part`. Because `/etc/lvm/lvm.conf` already exists on the node, it must use `op: overwrite`. Changing the op (or pointing `create` at another `/etc` path) fails the `WriteUserFiles` boot step: the node pauses and enters a reboot loop, and `talosctl bootstrap` reports only `bootstrap is not available yet` with no obvious cause.
{{% /alert %}}

1. Make another configuration patch file `patch-controlplane.yaml` with settings exclusive to control plane nodes:

Note that VIP address is used for `machine.network.interfaces[0].vip.ip`:
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