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authorViacheslav Hletenko <v.gletenko@vyos.io>2023-06-14 13:36:39 +0000
committerViacheslav Hletenko <v.gletenko@vyos.io>2023-06-30 11:59:42 +0000
commita1f140c5a5eb18cb86465bc496349d093382dfef (patch)
treee3a0aca8132b09be5d965c3f784b15e28c887281 /src/conf_mode/service_config_sync.py
parent93724b596dab81d9a801bb5da7fd06933e293cae (diff)
downloadvyos-1x-a1f140c5a5eb18cb86465bc496349d093382dfef.tar.gz
vyos-1x-a1f140c5a5eb18cb86465bc496349d093382dfef.zip
T775: Add service config-sync between 2 routers
Service config-sync allows synchronizing a section of the configuration. As PoC allow only nat, nat66 and firewall sections Rertreive the configuration for a section from self node and send this configuration to the section of the 'secondary' node. This feature adds a symlink from helper 'vyos_config_sync.py' to '/config/scripts/commit/post-hooks.d' and config that is located in '/run/config_sync_conf.conf' It will synchronyze the config only if the setcion was changed. set service config-sync secondary address 192.0.2.11 set service config-sync secondary key xxx set service config-sync section nat set service config-sync section nat66 set service config-sync section firewall set service config-sync mode load
Diffstat (limited to 'src/conf_mode/service_config_sync.py')
-rwxr-xr-xsrc/conf_mode/service_config_sync.py111
1 files changed, 111 insertions, 0 deletions
diff --git a/src/conf_mode/service_config_sync.py b/src/conf_mode/service_config_sync.py
new file mode 100755
index 000000000..5cde735a1
--- /dev/null
+++ b/src/conf_mode/service_config_sync.py
@@ -0,0 +1,111 @@
+#!/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/>.
+
+import os
+import json
+from pathlib import Path
+
+from vyos.config import Config
+from vyos.configdict import dict_merge
+from vyos.xml import defaults
+from vyos import ConfigError
+from vyos import airbag
+
+airbag.enable()
+
+
+service_conf = Path(f'/run/config_sync_conf.conf')
+post_commit_dir = '/run/scripts/commit/post-hooks.d'
+post_commit_file_src = '/usr/libexec/vyos/vyos_config_sync.py'
+post_commit_file = f'{post_commit_dir}/vyos_config_sync'
+
+
+def get_config(config=None):
+ if config:
+ conf = config
+ else:
+ conf = Config()
+
+ base = ['service', 'config-sync']
+ if not conf.exists(base):
+ return None
+ config = conf.get_config_dict(base,
+ get_first_key=True,
+ no_tag_node_value_mangle=True)
+
+ default_values = defaults(base)
+ config = dict_merge(default_values, config)
+
+ return config
+
+
+def verify(config):
+ # bail out early - looks like removal from running config
+ if not config:
+ return None
+
+ if 'mode' not in config:
+ raise ConfigError(f'config-sync mode is mandatory!')
+
+ for option in ['secondary', 'section']:
+ if option not in config:
+ raise ConfigError(f"config-sync '{option}' is not configured!")
+
+ if 'address' not in config['secondary']:
+ raise ConfigError(f'secondary address is mandatory!')
+ if 'key' not in config['secondary']:
+ raise ConfigError(f'secondary key is mandatory!')
+
+
+def generate(config):
+ if not config:
+
+ if os.path.exists(post_commit_file):
+ os.unlink(post_commit_file)
+
+ if service_conf.exists():
+ service_conf.unlink()
+
+ return None
+
+ # Write configuration file
+ conf_json = json.dumps(config, indent=4)
+ service_conf.write_text(conf_json)
+
+ # Create post commit dir
+ if not os.path.isdir(post_commit_dir):
+ os.makedirs(post_commit_dir)
+
+ # Symlink from helpers to post-commit
+ if not os.path.exists(post_commit_file):
+ os.symlink(post_commit_file_src, post_commit_file)
+
+ return None
+
+
+def apply(config):
+ return None
+
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)