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T2486: DNS, vyos-hostsd fixes
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When the 'powersave' option under 'system console' was defined but no actual
serial console device this cause the following error during migration:
Loading configuration from 'config.boot'
Traceback (most recent call last):
File "/opt/vyatta/etc/config-migrate/migrate/system/16-to-17", line 45, in <module>
for device in config.list_nodes(base + ['device']):
File "/usr/lib/python3/dist-packages/vyos/configtree.py", line 236, in list_nodes
raise ConfigTreeError("Path [{}] doesn't exist".format(path_str))
vyos.configtree.ConfigTreeError: Path [b'system console device'] doesn't exist
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Boolean nodes have been removed b/c a boolean value makes less sense. The same
behavior can be achieved with the presence or absence of a node. Unfortunately
the 'autonomous-flag' node has been a negated one which did not migrate
it to 'no-autonomous-flag' if it was set to false previously.
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Add new nodes for 'service dns forwarding domain':
'addnta': adds addNTA to lua-config-file
'recursion-desired': sets '+' before the zone in forward-zones-file
The migrator sets both options for all configured domains. This is
usually the desired config.
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The previous implementation only supported disabling DHCP nameservers for
all interfaces, and was implemented improperly so it didn't work anyway.
This migrates it to name-servers-dhcp <interface>, which allows us to enable
just the interfaces we want to use for system DNS, identical in syntax to
'service dns forwarding dhcp <interface>'.
The migrator searches through all interfaces that have address 'dhcp(v6)?'
and adds them to the name-servers-dhcp list if disable-dhcp-nameservers is
not set, else it does nothing.
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During testing it was discovered that there is a well known problem (we had for
ethernet interfaces) also in the serial port world. They will be enumerated and
mapped to /dev/ttyUSBxxx differently from boot to boot. This is especially
painful on my development APU4 board which also has a Sierra Wireless MC7710
LTE module installed.
The serial port will toggle between ttyUSB2 and ttyUSB5 depending on the
amount of serial port extenders attached (FT4232H).
The shipped udev rule (/usr/lib/udev/rules.d/60-serial.rules) partly solves
this by enumerating the devices into /dev/serial/by-id folder with their name
and serial number - it's a very good idea but I've found that not all of the
FT4232H dongles have a serial number programmed - this leads to the situation
that when you plug in two cables with both having serial number 0 - only one
device symlink will appear - the previous one is always overwritten by the
latter one.
Derive /usr/lib/udev/rules.d/60-serial.rules and create a /dev/serial/by-bus
directory and group devices by attached USB root port.
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Support for Hayes modems has been long gone (1.2.x) and nobody cared. It was
removed in commit d582bbaf3 ("update console settings for systemd") of
vyatta-cfg-system.
So as there have been zero complaints - cleanup the CLI.
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The current implementation only works once the system has been fully booted
up and the config nodes have been process. So there is no "early" kernel
debugging. It is started with priority 400 (after all network stuff) - thus it
has a questionable at all for Kernel debugging.
It would only make sense if the entire system is changed to supply the config
stuff to the Kernel commandline and then send it to a dedicated MAC address
target as network will be initialized late.
As there are zero Phabricator tasks available and we do not know any user using
this - the "feature" will be removed.
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During testing it was discovered that there is a well known problem (we had for
ethernet interfaces) also in the serial port world. They will be enumerated and
mapped to /dev/ttyUSBxxx differently from boot to boot. This is especially
painful on my development APU4 board which also has a Sierra Wireless MC7710
LTE module installed.
The serial port will toggle between ttyUSB2 and ttyUSB5 depending on the
amount of serial port extenders attached (FT4232H).
The shipped udev rule (/usr/lib/udev/rules.d/60-serial.rules) partly solves
this by enumerating the devices into /dev/serial/by-id folder with their name
and serial number - it's a very good idea but I've found that not all of the
FT4232H dongles have a serial number programmed - this leads to the situation
that when you plug in two cables with both having serial number 0 - only one
device symlink will appear - the previous one is always overwritten by the
latter one.
Derive /usr/lib/udev/rules.d/60-serial.rules and create a /dev/serial/by-bus
directory and group devices by attached USB root port.
vyos@vyos:~$ find /dev/serial/by-bus/ -name usb* -exec basename {} \; | sort
usb0b1.3p1.0
usb0b1.3p1.2
usb0b1.3p1.3
usb0b2.4p1.0
usb0b2.4p1.1
usb0b2.4p1.2
usb0b2.4p1.3
So we have USB root 0 with bus 1.3 and port 1.0. The enumeration is constant
accross reboots.
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Rename the CLI nodes for prefix delegation from "dhcpv6-options delegate
<interface>" to "dhcpv6-options prefix-delegation interface <interface>".
The change is required to add the possibility to request for specific prefix
sized via the CLI. That option was not possible with the old configuration
tree.
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The subnet specific nodes sip-server-address & sip-server-name do the same for
the user - specify a SIP server. Only the backend is rendered in a different
way, as ISC DHCPv6 expects different options. There is absolutely no need for
the user to distinguish between both two nodes.
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- delete log_file, log_level and user nodes
- rename hash_type to hash
- rename mine_interval to interval
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... sometimes it seems to have been called dns-server or dns-servers :/ ...
lucky me!
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Instead of having "dns-server server-1|server-2" nodes and the same for IPv6
all DNS nameservers are migrated to a common name-servers node.
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Commit bbea850ea5f ("ifconfig: T2057: remove need for interface-types.json")
called the Interface() class with a wrong input variable, this caused the
following error:
Traceback (most recent call last):
File "/opt/vyatta/etc/config-migrate/migrate/dns-forwarding/1-to-2", line 64, in <module>
raise ValueError(f'Invalid interface name {intf}')
ValueError: Invalid interface name eth0 vif 202
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Combining multiple options into a single CLI node is considered bad practice.
IPv6 prefixes consited of the prefix itself and a mask send to the client in
one node only.
The following CLI parts have been migrated from
client-ipv6-pool {
delegate-prefix fc00:0:1::/48,64
prefix 2001:db8::/64,64
}
to
client-ipv6-pool {
delegate fc00:0:1::/48 {
delegation-prefix 48
}
prefix 2001:db8::/48 {
mask 64
}
}
Thus regular validation steps from the VyOS CLI can be used when a prefix is
configured.
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It makes less sense for the user to specify this behavior.
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There is no reason to distinguish between WINS servers in terms of priority.
This is solely a task which can be done in the underlaying Python scripts.
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There is no reason to distinguish between an IPv4 and IPv6 name-server node
on the CLI - this can be done in the underlaying Python scripts.
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Restriction of api proxy should be owned by https.py, not http-api.py.
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WireGuard has been the only subsystem combining a remote ip address and a
remote port number into a single node. This is bad as there is no possiblity
for the XML based input validation for IP address and port numbers.
That's the reason the peer endpoint node goets migrated into a peer address
and a peer port node utilizing the embedded syntax node checking for IP
addresses and port ranges.
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... those nodes mean link-mtu advertisement is disabled in radvd and thus we
delete the node completely as it's useless.
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ifconfig: T2057: break down DHCP, add register, STP and VLAN as adapters
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An if statement was missing to check if there are really additional
radius-settings or not.
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Limiting the amount of requests passed to a server seems to be the wrong
way to tackle a problem.
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