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| -rw-r--r-- | docs/contributing/development.rst | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/docs/contributing/development.rst b/docs/contributing/development.rst index 009e84f7..0a8967d5 100644 --- a/docs/contributing/development.rst +++ b/docs/contributing/development.rst @@ -673,6 +673,34 @@ Migrating old CLI - None - All logic should be in the scripts +Debugging +========= + +There are two flags available to aid in debugging configuration scripts. +Since configuration loading issues will manifest during boot, the flags are +passed as kernel boot parameters. + +Kernel boot parameters +---------------------- + +``vyos-debug`` +^^^^^^^^^^^^^^ + +Adding the parameter ``vyos-debug`` to the linux boot line will produce +timing results for the execution of scripts during commit. If one is seeing +an unexpected delay during manual or boot commit, this may be useful in +identifying bottlenecks. The internal flag is ``VYOS_DEBUG``, and is found in +vyatta-cfg_. Output is directed to ``/var/log/vyatta/cfg-stdout.log``. + +``vyos-config-debug`` +^^^^^^^^^^^^^^^^^^^^^ + +During development, coding errors can lead to a commit failure on boot, +possibly resulting in a failed initialization of the CLI. In this +circumstance, the kernel boot parameter ``vyos-config-debug`` will ensure +access to the system as user ``vyos``, and will log a Python stack trace to +``/tmp/boot-config-trace``. + Continuous Integration ====================== @@ -701,5 +729,6 @@ http://dev.packages.vyos.net/repositories/. .. _`IPv4, IPv6`: https://github.com/vyos/vyos-1x/tree/current/interface-definitions/include/address-ipv4-ipv6.xml.i .. _`VLAN (VIF)`: https://github.com/vyos/vyos-1x/tree/current/interface-definitions/include/vif.xml.i .. _`MAC address`: https://github.com/vyos/vyos-1x/tree/current/interface-definitions/include/interface-mac.xml.i +.. _vyatta-cfg: https://github.com/vyos/vyatta-cfg .. include:: ../common-references.rst |