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rig major updates

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buenosairesam
2026-09-22 05:15:49 -03:00
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rig/docs/notes/kind-config.md
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The cluster: one node by default — add nodes or port mappings by editing the file, then `make cluster reset`.
It is a TEMPLATE rather than a plain kind-config.yaml because a rig is copied and renamed to make a second environment, and both the cluster name and the host port follow the directory. A checked-in literal would make every copy collide on both. ctrl/cluster.sh renders it with sed — not envsubst, which is gettext-base and absent from a minimal Debian, and rig's whole premise is that Docker is the only prerequisite.
It is a TEMPLATE rather than a plain kind-config.yaml because a rig (or an overlay) is copied and renamed to make a second environment, and both the cluster name and the host port follow the folder. A checked-in literal would make every copy collide on both — which is exactly why every other project here, with its literal kind-config.yaml, has only one of itself. ctrl/cluster.sh renders it with sed — not envsubst, which is gettext-base and absent from a minimal Debian, and rig's whole premise is that Docker is the only prerequisite.
A kind config is fixed at creation: to change the cluster, edit the file, then `make cluster reset`. lib/config.sh reads the node count back out of it, so nothing restates it.
## An overlay's own kind config
An overlay may carry its own `kind-config.yaml.tpl` (see [overlay.md](overlay.md)); it replaces this whole file, rendered the same way, so start from a copy of this one. Keep the containerd `config_path` patch: `make check` reports its absence whenever a registry mode needs it. A project that builds its own cluster through rig can also pass any file as `KIND_CONFIG=<path>`.
## Substituted variables
Substituted by ctrl/cluster.sh: CLUSTER, NODE_IMAGE, HTTP_PORT, HOST_WORKDIR. The header comment names them without the `${...}` braces so that line survives the substitution.
Substituted by ctrl/cluster.sh: CLUSTER, NODE_IMAGE, HTTP_PORT, HOST_WORKDIR (rig's folder), OVERLAY_DIR (the overlay's folder, for mounts). The header comment names them without the `${...}` braces so that line survives the substitution.
## Node count