From c1ff7319f4c63c8de10412128a9a27858f09de0e Mon Sep 17 00:00:00 2001
From: "Andreas B. Mundt" <andreas.mundt@steinbeisschule-reutlingen.de>
Date: Tue, 7 Feb 2023 19:09:47 +0100
Subject: [PATCH] Sync VM back to the server.

---
 roles/lmn_vm/files/lmn-sync-vm-sudo |  1 +
 roles/lmn_vm/files/sync-vm.sh       | 64 +++++++++++++++++++++++++++++
 roles/lmn_vm/tasks/main.yml         | 19 ++++-----
 3 files changed, 73 insertions(+), 11 deletions(-)
 create mode 100644 roles/lmn_vm/files/lmn-sync-vm-sudo
 create mode 100644 roles/lmn_vm/files/sync-vm.sh

diff --git a/roles/lmn_vm/files/lmn-sync-vm-sudo b/roles/lmn_vm/files/lmn-sync-vm-sudo
new file mode 100644
index 0000000..5144e28
--- /dev/null
+++ b/roles/lmn_vm/files/lmn-sync-vm-sudo
@@ -0,0 +1 @@
+%role-teacher ALL=(root) NOPASSWD: /usr/local/bin/sync-vm.sh
diff --git a/roles/lmn_vm/files/sync-vm.sh b/roles/lmn_vm/files/sync-vm.sh
new file mode 100644
index 0000000..a44c98f
--- /dev/null
+++ b/roles/lmn_vm/files/sync-vm.sh
@@ -0,0 +1,64 @@
+#!/usr/bin/bash
+# Push VM-Disk-Image on server
+set -eu
+
+show_help() {
+    cat << EOF
+Usage: $(basename "$0") [-u vmname] [-d vmname] [-a]"
+When using option -u (upload), the disk from VM vmname will be synced on server.
+Otherwise the images from images.list and xml-directory will be synced from server.
+EOF
+}
+
+upload_image() {
+    # check if VM-Diskimage exists
+    if [[ ! -f "/var/lib/libvirt/images/${VM_NAME}.qcow2" ]]; then
+        echo "File not found ${VM_NAME}.qcow2"
+        exit 1
+    fi
+    # check if VM-Machine-Definition XML exists
+    if [[ ! -f "/var/lib/libvirt/images/xml/${VM_NAME}.xml" ]]; then
+        echo "File not found ${VM_NAME}.xml"
+        exit 1
+    fi
+    rsync -av --password-file=/etc/rsync.secret "/var/lib/libvirt/images/${VM_NAME}.qcow2" \
+	  rsync://vmuser@server:/vmimages-upload/
+    rsync -av --password-file=/etc/rsync.secret "/var/lib/libvirt/images/xml/${VM_NAME}.xml" \
+	  rsync://vmuser@server:/vmimages-upload/xml/
+}
+
+download_image() {
+    rsync -av --password-file=/etc/rsync.secret \
+	  "rsync://vmuser@server:/vmimages-download/${VM_NAME}.qcow2" \
+	  /var/lib/libvirt/images/
+    rsync -av --password-file=/etc/rsync.secret \
+	  "rsync://vmuser@server:/vmimages-download/xml/${VM_NAME}.xml" \
+	  /var/lib/libvirt/images/xml/
+}
+
+sync_all_images() {
+    rsync -av --password-file=/etc/rsync.secret --files-from=/var/lib/libvirt/images/images.list \
+	  rsync://vmuser@server:/vmimages-download/ /var/lib/libvirt/images/
+    rsync -av --password-file=/etc/rsync.secret rsync://vmuser@server:/vmimages-download/xml \
+	  /var/lib/libvirt/images/
+}
+
+while getopts ':u:d:a' OPTION; do
+    case "$OPTION" in
+        u)
+            VM_NAME=$OPTARG
+            upload_image
+            ;;
+        d)
+            VM_NAME=$OPTARG
+            download_image
+            ;;
+        a)
+            sync_all_images
+            ;;
+        ?)
+        show_help
+        exit 1
+        ;;
+    esac
+done
diff --git a/roles/lmn_vm/tasks/main.yml b/roles/lmn_vm/tasks/main.yml
index 6224e6b..cdce481 100644
--- a/roles/lmn_vm/tasks/main.yml
+++ b/roles/lmn_vm/tasks/main.yml
@@ -50,21 +50,17 @@
     dest: /etc/squid/squid-usermode.conf
     mode: '0644'
 
-- name: deploy sudo configuration
+- name: deploy sudo configurations
   copy:
-    src: lmn-mounthome-sudo
-    dest: /etc/sudoers.d/90-lmn-mounthome
-    owner: root
-    group: root
-    mode: '0700'
-
-- name: deploy sudo configuration
-  copy:
-    src: lmn-create-clone-sudo
-    dest: /etc/sudoers.d/90-lmn-create-clone
+    src: "{{ item }}"
+    dest: "/etc/sudoers.d/90-{{ item }}"
     owner: root
     group: root
     mode: '0700'
+  loop:
+    - lmn-mounthome-sudo
+    - lmn-create-clone-sudo
+    - lmn-sync-vm-sudo
 
 - name: deploy mount home script
   copy:
@@ -79,6 +75,7 @@
     - rebase-vm.sh
     - create-clone.sh
     - run-vm.sh
+    - sync-vm.sh
 
 - name: deploy http proxy config
   copy: