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This changeset contains multiple changes in structure, logic, and bugfixes for dhclient-script. It should provide better compatibility with new Debian versions and flexibility in controlling and changing VyOS-related functions.
1. Structure change:
* All VyOS-related functionality was moved from dhclient-script itself to separated hook files.
* Old vyatta-dhclient-hook was moved from vyatta-cfg to vyos-1x.
* This change allows discard dhclient-script replacing and use the original one from Debian without any changes. So, we do not need to track all changes in upstream so carefully.
* To provide compatibility between original dhclient-script and VyOS, two internal commands/functions are repaced in hooks: ip and make_resolv_conf. So, in all places where used ${ip} or make_resolv_conf, actually using VyOS-tuned functions instead original.
* `ip` function is a wrapper, which automatically chooses what to use: transparently pass a command to /usr/sbin/ip, change a route in kernel table or FRRouting config via vtysh.
* `make_resolv_conf` function main logic was copied from current VyOS implementation and use vyos-hostsd-client for making changes
2. Added:
* Logging. Now is possible to log all changes, what is doing by dhclient-script. Logs can be saved to the journal and displayed in stderr (for debugging purposes). By default, logging to the journal is enabled (at least for some time) to provide a way to collect enough information in case if some bug in this new implementation will be found. This can be changed in the 01-vyos-logging file.
3. Fixed/Changed:
* If DHCP lease was expired, released or dhclient was stopped, dhclient-script will try to delete default route from this lease.
* Instead of blindly killing all dhclients in case if FRRouting daemon is not running, now used more intelligent logic:
* dhclients are stopping natively (with all triggers processing), instead of killing;
* dhclient-script will not kill parent dhclient process. This allows to fix the problem when systemd inform about failing to rise up interfaces at early boot stages (used in Cloud-init images);
* dhclient-script will not touch dhclients, which are not related to the current interface or IP protocol version.
* For getting FRRouting daemon status used native way via watchfrr.sh, instead of the previous trick with vtysh accessibility.
* before adding a new route to FRRouting configuration, this route will be deleted from the kernel (if it is presented there). This allows to properly replace routes, added at early boot stages, when FRR not available.
* Routes in FRRouting are adding with "tag 210". This allows protecting static routes, added via CLI, from deletion when old routes are deleting by DHCP.
* DNS servers will be reconfigured only when $new_domain_name_servers are not the same as $old_domain_name_servers. Previously, this was done during each RENEW procedure.
* Replacing MTU for preconfigured one was changed to Python (via vyos.config). The previous version with vyatta-interfaces.pl was obsoleted and seems to be broken.
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As we need to operate with usmUser, we can search for it directly if its
present or not. There is always one usmUser entry for the system user.
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Modify lldpd config template in './src/conf_mode/lldp.py'.
conf_mode uses 'all' to specify all interfaces.
lldpd config file uses '*' to specify all interfaces.
Both use an exclamation mark ('!') as prefix to disable lldp on an interface, eg. '!eth1' or '!all'.
Add jinja2 template filters to create and merge following sub-lists
a) take list of conf_mode lldp interfaces, remove every interface except 'all', replace 'all' with '*'
-> support interface all
b) take list of conf_mode lldp interfaces, remove every interface except '!all', replace '!all' with '!*'
-> support interface all disabled
c) take list of conf_mode lldp interfaces, remove every interface named 'all' or '!all'
-> support any other interface
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* 't1948-system-login' of github.com:c-po/vyos-1x:
radius: T1948: add libnss-mapname support
radius: T1948: rename server dictionary
radius: T1948: supply PAM configuration template
user: T1948: fix system user creation
ogin: user: radius: T1948: use discrete configuration for each system
login: T1948: remove obsolete config nodes "group" and "level"
login: T1948: SSH keys can only be added after user has been created
login: T1948: initial support for RADIUS configuration
login: T1948: support for SSH keys
login: T1948: add/remove local users
login: T1948: initial rewrite in XML/Python
options: T1919: remove broken comment
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Split combined XML/Python code to individual code for local user accounts
and RADIUS authenticated accounts.
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Without this change the bond interface is always torn down prior changing it's
parameters. This will also reset BGP sessions on other VLAN interfaces which
is more then bad.
This change will only tear down the interface when it is really required,
indicated by bond['shutdown_required'], which is required by certain operations
as e.g. changing the operating mode.
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Commit 66f8be0 ("lldp: T1896: remove MED civic based location information")
removed MED civic location support, but there was an error in an if/elif
statement. This has been fixes.
File "/usr/libexec/vyos/conf_mode/lldp.py", line 191
elif len(location['coordinate_based']) > 0:
^
SyntaxError: invalid syntax
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* 't1896-remove-lldp-civic' of github.com:c-po/vyos-1x:
lldp: T1896: remove MED civic based location information
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Signed-off-by: bbs2web <bbs2web@hotmail.com>
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Civic based location information was not working for quiet some time and
as an unused feature we should drop it to keep the codebase more simple
and maintainable.
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This is actually an "upstream" bug, see [1] but it can be fixed via our own
scripts.
[1]: https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1384122
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This reverts commit 6945b2e3561cd76d193d41dd6ab5249661230460.
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The previous logic returned:
>>> eth = vyos.interfaces.list_interfaces_of_type("ethernet")
>>> for intf in eth:
... print(intf)
...
eth0
eth1
eth2
eth0.201
eth1.50
>>> for intf in eth:
... if '.' in intf:
... eth.remove(intf)
...
>>> eth
['eth0', 'eth1', 'eth2', 'eth1.50']
This only eth0.201 was removed
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