feat: helper to show mgmt property information

For: https://github.com/ben-grande/qusal/issues/69

.github/ISSUE_TEMPLATE/bug.md

@@ -29,8 +29,12 @@ invalid.
 
 ### Software version
 <!--
-You must specify as much information as possible in this category.
-You can also specify the base commit of the project.
+You must specify as much information as possible in this category. The
+commands shown below are the minimum.
+Share the base commit of the project:
+  $ git rev-parse HEAD
+Share information about the Salt management qube structure:
+  https://github.com/ben-grande/qusal/blob/main/docs/TROUBLESHOOT.md#get-salt-management-information
 -->
 
 
@@ -57,7 +61,7 @@ settings manually, this should also be mentioned.
 
 ### Expected behavior
 <!--
-What where you expecting to have happened? Why where you expecting that?
+What where you expecting to have happened? Why were you expecting that?
 -->
 
 

docs/TROUBLESHOOT.md

@@ -7,6 +7,7 @@ Qusal troubleshooting guidelines.
 * [Detect if your issue was already opened](#detect-if-your-issue-was-already-opened)
 * [Qrexec client shows Request refused](#qrexec-client-shows-request-refused)
 * [Salt wrapper qubesctl command fails](#salt-wrapper-qubesctl-command-fails)
+* [Get Salt management information](#get-salt-management-information)
 
 ## Detect if your issue was already opened
 
@@ -69,3 +70,16 @@ Ending the Salt call with `-l debug` argument gives the most detailed output
 ```
 sudo qubesctl state.apply pkg.uptodate -l debug
 ```
+
+## Get Salt management information
+
+Depending on the operating system of the `management_dispvm`, Salt can fail.
+Let's gather some information about it.
+
+Get information about the global `management_dispvm` and the same property of
+a specific qube. In this example we use `tpl-qubes-builder`, substitute for
+the qube being managed:
+```sh
+sudo qubesctl state.apply dom0.helpers
+qvm-mgmt tpl-qubes-builder
+```

salt/dom0/files/bin/qvm-mgmt

@@ -0,0 +1,46 @@
+#!/bin/sh
+## SPDX-FileCopyrightText: 2024 Benjamin Grande M. S. <ben.grande.b@gmail.com>
+##
+## SPDX-License-Identifier: AGPL-3.0-or-later
+
+set -eu
+
+usage(){
+  echo "Usage: ${0##*/} QUBE" >&2
+  exit "${1:-1}"
+}
+
+get_qube_feat(){
+  qube="${1}"
+  qvm-features "${qube}" \
+    | grep -e os-distribution -e os-version -e template-release \
+           -e template-release -e template-name
+}
+
+case "${1-}" in
+  -h|--?help) usage 0;;
+  -*|"") usage 1;;
+  *) wanted_qube="${1}";;
+esac
+
+mgmt="$(qubes-prefs management_dispvm)"
+echo "Global management_dispvm qube: ${mgmt}"
+tpl_mgmt="$(qvm-prefs "${mgmt}" template)"
+echo "Global management_dispvm template: ${tpl_mgmt}"
+echo "Global management_dispvm template features:"
+get_qube_feat "${tpl_mgmt}"
+
+if ! qvm-check -q -- "${wanted_qube}"; then
+  echo "error: qube '${wanted_qube}' does not exist" >&2
+  exit 1
+fi
+echo "Wanted qube: ${wanted_qube}"
+wanted_mgmt="$(qvm-prefs "${wanted_qube}" management_dispvm)"
+echo "Global management_dispvm qube: ${wanted_mgmt}"
+if test "${wanted_mgmt}" = "${mgmt}"; then
+  exit
+fi
+wanted_tpl_mgmt="$(qvm-prefs "${wanted_mgmt}" template)"
+echo "Global management_dispvm template: ${wanted_tpl_mgmt}"
+echo "Global management_dispvm template features:"
+get_qube_feat "${wanted_tpl_mgmt}"

salt/dom0/helpers.sls

@@ -35,4 +35,13 @@ SPDX-License-Identifier: AGPL-3.0-or-later
     - group: root
     - makedirs: True
 
+"{{ slsdotpath }}-mgmt-debug-helper":
+  file.managed:
+    - name: /usr/local/bin/qvm-mgmt
+    - source: salt://{{ slsdotpath }}/files/bin/qvm-mgmt
+    - mode: "0755"
+    - user: root
+    - group: root
+    - makedirs: True
+
 {% endif -%}