T5341: HA migrate virtual-server tag to node address

Migrate:
    high-availability virtual-server 203.0.113.1
to: high-availability virtual-server <name> address 203.0.113.1

2 files changed, 56 insertions, 0 deletions

diff --git a/src/conf_mode/high-availability.py b/src/conf_mode/high-availability.py
index e18b426b1..2b1cdbd23 100755
--- a/src/conf_mode/high-availability.py
+++ b/src/conf_mode/high-availability.py
@@ -175,6 +175,11 @@ def verify(ha):
     # Virtual-server
     if 'virtual_server' in ha:
         for vs, vs_config in ha['virtual_server'].items():
+
+            if 'address' not in vs_config and 'fwmark' not in vs_config:
+                raise ConfigError('Either address or fwmark is required '
+                                  f'but not set for virtual-server "{vs}"')
+
             if 'port' not in vs_config and 'fwmark' not in vs_config:
                 raise ConfigError(f'Port or fwmark is required but not set for virtual-server "{vs}"')
             if 'port' in vs_config and 'fwmark' in vs_config:
diff --git a/src/migration-scripts/vrrp/3-to-4 b/src/migration-scripts/vrrp/3-to-4
new file mode 100755
index 000000000..b0a6975c2
--- /dev/null
+++ b/src/migration-scripts/vrrp/3-to-4
@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2023 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from sys import argv
+from vyos.configtree import ConfigTree
+
+if (len(argv) < 1):
+    print('Must specify file name!')
+    exit(1)
+
+file_name = argv[1]
+
+with open(file_name, 'r') as f:
+    config_file = f.read()
+
+base = ['high-availability', 'virtual-server']
+config = ConfigTree(config_file)
+
+if not config.exists(base):
+    # Nothing to do
+    exit(0)
+
+if config.exists(base):
+    for vs in config.list_nodes(base):
+        vs_base = base + [vs]
+
+        # If the fwmark is used, the address is not required
+        if not config.exists(vs_base + ['fwmark']):
+            # add option: 'virtual-server <tag> address x.x.x.x'
+            config.set(vs_base + ['address'], value=vs)
+
+
+try:
+    with open(file_name, 'w') as f:
+        f.write(config.to_string())
+except OSError as e:
+    print(f'Failed to save the modified config: {e}')
+    exit(1)