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Diffstat (limited to 'docs/contributing')
| -rw-r--r-- | docs/contributing/development.rst | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/docs/contributing/development.rst b/docs/contributing/development.rst index 66344ead..369f2127 100644 --- a/docs/contributing/development.rst +++ b/docs/contributing/development.rst @@ -755,6 +755,31 @@ In some rare cases, it may be useful to see what the OS is doing, including during boot. This option sends all commands used by VyOS to a file. The default file is ``/tmp/full-log`` but it can be changed. +Config Migration +---------------- + +When writing a new configuration migrator it may happen that you see an error when +you try to invoke it manually on a development system. This error will look like: + +.. code-block:: none + + vyos@vyos:~$ /opt/vyatta/etc/config-migrate/migrate/ssh/0-to-1 /tmp/config.boot + Traceback (most recent call last): + File "/opt/vyatta/etc/config-migrate/migrate/ssh/0-to-1", line 31, in <module> + config = ConfigTree(config_file) + File "/usr/lib/python3/dist-packages/vyos/configtree.py", line 134, in __init__ + raise ValueError("Failed to parse config: {0}".format(msg)) + ValueError: Failed to parse config: Syntax error on line 240, character 1: Invalid syntax. + +The reason is that the configuration migration backend is rewritten and uses a new form of +"magic string" which is applied on demand when real config migration is run on boot. When +runnint individual migrators for testing, you need to convert the "magic string" on your +own by: + +.. code-block:: none + + vyos@vyos3:~$ /usr/libexec/vyos/run-config-migration.py --virtual --set-vintage vyos /tmp/config.boot + Priorities ========== |