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Add new feature, high-availability virtual-server
Change XML, python and templates
Move vrrp to root node 'high-availability' as all logic are
handler by root node 'high-availability'
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This prevents a failover from MASTER -> BACKUP when changing any MASTER related
configuration.
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Commit 761631d6 ("vrrp: keepalived: T3847: migrate to get_config_dict()")
switched to the new python function get_config_dict(), when we deal with
tag nodes that can contain a hyphen, we should also set no_tag_node_value_mangle
in order to preserve it.
This caused a dict lookup error as the hyphens in the test scripts got replaced
by an _.
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Rename virtual-address -> address as we always talk about an IP address.
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Move keepalived configuration from /etc/keepalived to /run/keepalived.
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This is a successor to commit a2ac9fac16e ("vyos.template: T2720: always enable
Jinja2 trim_blocks feature"). It only shifts the whitespaces / indents inside
the keepalived configuration file.
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deprecation warnings.
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airbag must now be explicitly installed.
the patch also allow to fully disables the installation of the logging
code at setup (and not just installing and doing nothing)
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Tidied up the code and moved it under VRRP in view to use
with show-interface (which has VRRP filtering)
No change in functionality
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convert all call to jinja to use template.render
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os.system does print the ouput of the command, run() does not.
A new function called call() does the printing and return the error code.
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Note: if transition-scripts configured for both vrrp instance and sync group, which are it a member of, both scripts will be executed.
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In old implementation, all notify scripts are configured directly inside a keepalived.conf. This way is not recommended even by keepalived as scripts execution is not tracked and they may be running not in order and killed before the actual work will be finished. We have observed such situations in very rare cases during tests.
New implementation use FIFO pipe, to which keepalived send any state changes. And these notifications are read by a daemon, saved in a queue and processed one by one, which eliminates the situation when the scripts creating inconsistent config or environment.
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transaction-script 'stop'
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It is possible to add a nonexistent interface to the VRRP configuration, but this will lead to keepalived error and stop after configuration reload.
With this new parameter, keepalived will consider nonexistent interfaces as FAULT instead crash and start VRRP on them, when they will appear on the system, which is a feature and much more correct behavior.
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in unicast mode (patch by Johan Fredin).
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- adding vmac_xmit_base to keepalived.conf when use_vmac is being used
otherwise both nodes will become master
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Watcher7).
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Since it does not understand escaped quotes inside notify_* options,
until we fix that, we have to put the script and its arguments
in positional arguments and join inside the transition script runner.
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