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revert IOL port-name override; document custom_adapters instead

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_get_container_ifname only names the kernel interface inside the
container's network namespace (single call site: docker move_to_ns) -
IOL never uses that path, and the controller port list never reads it.
Name the ports through the template's custom_adapters instead (the
mechanism SR Linux appliances use for mgmt0/e1-1): adapter N shows as
Ethernet{N/4}/{N%4}, matching the IOS CLI, with no server-side changes.
This commit is contained in:
YueGuobin committed 2026-09-05 21:54:12 +08:00
1 parent 4c818c6b37
commit 9b55164064
3 files changed
+13 -28
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docs/features/iol-runner-docker.md
+13 -5
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@@ -93,7 +93,12 @@ API docs for the auth flow), or in the Web UI under
"console_type": "telnet",
"environment": "GNS3_IOL_RUNNER=1",
"extra_volumes": ["/config"],
"memory": 2560
"custom_adapters": [
{"adapter_number": 0, "port_name": "Ethernet0/0"},
{"adapter_number": 1, "port_name": "Ethernet0/1"},
{"adapter_number": 2, "port_name": "Ethernet0/2"},
{"adapter_number": 3, "port_name": "Ethernet0/3"}
]
}
```
@@ -101,17 +106,20 @@ API docs for the auth flow), or in the Web UI under
|---|---|---|
| `environment` | `GNS3_IOL_RUNNER=1` | The switch that selects `IOLDockerVM` (skip-init, unix-socket NIO, auto volumes). Optional: `GNS3_IOL_MEMORY=<MB>` (default 2048). |
| `extra_volumes` | `["/config"]` | `/tmp/run` is auto-added. **Never add `/tmp`** — it would persist the socket directory into the projects tree and uBridge would reject the too-long AF_UNIX path. |
| `custom_adapters` | one entry per adapter | Names each port after the IOL interface it maps to: adapter `N` → `Ethernet{N/4}/{N%4}` (same mechanism SR Linux uses for `mgmt0`/`e1-1`). Raise the list up to `Ethernet7/3` (32 ports, the IOL maximum) when raising `adapters`; adapters beyond the list fall back to `eth{N}`. |
| `memory` | optional; `0` (default) = no cap | Unset works — Docker applies no limit. When you do set a cap, keep it at IOL memory + ~512 MB, or the cgroup OOM-killer shoots the router. |
| `console_type` | `telnet` | The runner muxes the IOS console onto PID 1 stdio; `docker_exec` is not needed. |
| `adapters` | multiple of 4 | IOL port granularity. Ports are shown as `Ethernet0/0`-style (one 4-port unit per adapter range), matching the IOS CLI. |
| `adapters` | multiple of 4 | IOL port granularity (one 4-port unit per range). |
### Verify
1. Drop a node into a project and start it — the console shows the
1. The node's port list shows `Ethernet0/0`… (from the template's
`custom_adapters`).
2. Drop a node into a project and start it — the console shows the
`Linux Unix (i686)` banner within seconds.
2. `$XDG_RUNTIME_DIR/gns3/unixio/<node-id>/` contains `s00.sock`… (one
3. `$XDG_RUNTIME_DIR/gns3/unixio/<node-id>/` contains `s00.sock`… (one
pair per adapter).
3. The startup-config lives at
4. The startup-config lives at
`project-files/docker/<node>/tmp/run/config` (interface names
`Ethernet0/0`, not `GigabitEthernet0/0`).