diff options
Diffstat (limited to 'nixos/doc')
| -rw-r--r-- | nixos/doc/manual/development/running-nixos-tests-interactively.section.md | 7 | ||||
| -rw-r--r-- | nixos/doc/manual/installation/changing-config.chapter.md | 7 |
2 files changed, 12 insertions, 2 deletions
diff --git a/nixos/doc/manual/development/running-nixos-tests-interactively.section.md b/nixos/doc/manual/development/running-nixos-tests-interactively.section.md index a816213f37d..4b8385d7e0d 100644 --- a/nixos/doc/manual/development/running-nixos-tests-interactively.section.md +++ b/nixos/doc/manual/development/running-nixos-tests-interactively.section.md @@ -62,7 +62,7 @@ where socat is running. If your test has only a single VM, you may use e.g. ```ShellSession -$ QEMU_NET_OPTS="hostfwd=tcp:127.0.0.1:2222-127.0.0.1:22" ./result/bin/nixos-test-driver +$ QEMU_NET_OPTS="hostfwd=tcp:127.0.0.1:2222-:22" ./result/bin/nixos-test-driver ``` to port-forward a port in the VM (here `22`) to the host machine (here port `2222`). @@ -73,6 +73,11 @@ since a single port on the host cannot forward to multiple VMs. If the test defines multiple machines, you may opt to _temporarily_ set `virtualisation.forwardPorts` in the test definition for debugging. +Such port forwardings connect via the VM's virtual network interface. +Thus they cannot connect to ports that are only bound to the VM's +loopback interface (`127.0.0.1`), and the VM's NixOS firewall +must be configured to allow these connections. + ## Reuse VM state {#sec-nixos-test-reuse-vm-state} You can re-use the VM states coming from a previous run by setting the diff --git a/nixos/doc/manual/installation/changing-config.chapter.md b/nixos/doc/manual/installation/changing-config.chapter.md index f2ffea9088a..12abf90b718 100644 --- a/nixos/doc/manual/installation/changing-config.chapter.md +++ b/nixos/doc/manual/installation/changing-config.chapter.md @@ -89,7 +89,7 @@ guest. For instance, the following will forward host port 2222 to guest port 22 (SSH): ```ShellSession -$ QEMU_NET_OPTS="hostfwd=tcp:127.0.0.1:2222-127.0.0.1:22" ./result/bin/run-*-vm +$ QEMU_NET_OPTS="hostfwd=tcp:127.0.0.1:2222-:22" ./result/bin/run-*-vm ``` allowing you to log in via SSH (assuming you have set the appropriate @@ -98,3 +98,8 @@ passwords or SSH authorized keys): ```ShellSession $ ssh -p 2222 localhost ``` + +Such port forwardings connect via the VM's virtual network interface. +Thus they cannot connect to ports that are only bound to the VM's +loopback interface (`127.0.0.1`), and the VM's NixOS firewall +must be configured to allow these connections. |