91 lines
4.0 KiB
JSON
91 lines
4.0 KiB
JSON
{
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"module": "nats",
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"version": "1",
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"provides": [
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{
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"name": "mesh-bus",
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"scope": "mesh"
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}
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],
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"claims": [
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{
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"name": "mesh-broker",
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"scope": "mesh"
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}
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],
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"bus-users": "/var/lib/nats-module/conf/accounts.conf",
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"capabilities": [
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"container-runtime"
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],
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"emits": [],
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"consumes": [],
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"listens": [
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{
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"port": 4222,
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"protocol": "tcp",
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"from": "mesh",
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"why": "the mesh bus \u2014 every link the mesh has, over TLS, reached across the overlay"
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}
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],
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"guards": [
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8222
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],
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"resources": [
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{
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"id": "jetstream-data",
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"type": "directory",
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"path": "/var/lib/mesh-broker-nats",
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"mode": "0700"
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},
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{
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"id": "conf-dir",
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"type": "directory",
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"path": "/var/lib/nats-module/conf",
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"mode": "0700"
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},
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{
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"id": "server-conf",
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"type": "file",
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"path": "/var/lib/nats-module/conf/nats.conf",
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"content": "# The nats module's own server settings. Declared by the module, because a port, a TLS path\n# and a store directory are properties of the container this module raises: they live in its\n# image and its mounts and change when it does.\n#\n# The mesh writes accounts.conf beside this one and nothing else. A controller that wrote the\n# whole file would have to be kept in step with a Dockerfile it never sees.\n\nport: 4222\nhttp: 127.0.0.1:8222\n\n# The mesh's own broker certificate \u2014 the one every machine already pins by fingerprint and the\n# controller already trusts (MESH_BROKER_CERTIFICATE). Serving the new bus with it means no\n# machine's pin changes when it moves, and no second certificate exists to be wrong about.\ntls {\n cert_file: \"/tls/tls.crt\"\n key_file: \"/tls/tls.key\"\n}\n\n# **No `verify`, deliberately, and it was `verify: true` until a probe ran this image.** That\n# setting makes the server demand a *client* certificate, and nothing in the mesh presents one: a\n# host pins this server's exact certificate and authenticates with the password the mesh minted\n# (novox/hq ADR 0004, design 25 \u00a74), and so does a module's runtime. With it on, every connection\n# in the mesh is refused at the TLS handshake, before any password is looked at \u2014 and the error is\n# \"client didn't provide a certificate\", which reads as a client fault.\n#\n# TLS is still required: a tls block is what makes it required, and verify only decides whether\n# client certificates are checked. What is given up is a second factor the mesh has no machinery\n# to issue or rotate \u2014 a certificate per module per node \u2014 and what is kept is stronger than a\n# name check in both directions: an exact pin outward, a per-user password inward.\n\njetstream {\n store_dir: \"/data\"\n}\n\n# Every user of the mesh, composed by the controller and rewritten whenever a module is\n# assigned, a node enrols or a person's access changes.\n#\n# **Relative, and in this same directory, because it has to be.** An absolute include path is\n# resolved relative to the including file's directory, not from the root: nats-server given\n# `include /etc/nats/accounts.conf` from /etc/nats-server/nats.conf looks for\n# /etc/nats-server/etc/nats/accounts.conf and refuses to start. Verified against the server.\ninclude accounts.conf\n",
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"mode": "0644"
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},
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{
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"id": "server",
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"type": "container",
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"name": "mesh-broker-nats",
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"ports": [
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"4222:4222",
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"127.0.0.1:8222:8222"
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],
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"volumes": [
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"/var/lib/mesh-broker-nats:/data",
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"/var/lib/nats-module/conf:/etc/nats:ro",
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"/var/lib/mesh-broker-tls:/tls:ro"
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],
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"artifact": "server"
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}
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],
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"accesses": [
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{
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"path": "/var/lib/mesh-broker-tls",
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"mode": "read"
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}
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],
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"build": {
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"on": [
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{
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"arg": "NATS_BASE",
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"image": "nats@sha256:b83efabe3e7def1e0a4a31ec6e078999bb17c80363f881df35edc70fcb6bb927"
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}
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],
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"artifacts": [
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{
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"name": "server",
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"kind": "image",
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"from": "Dockerfile"
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}
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]
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}
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}
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