1. Regarding an "Alias" parameter a page:
doesn't have clear description and example for the parameter.
since this page:
is much better.
Need to extend *nix page and review windows' one. For example this sentence looks complicated:
Aliases cannot be used for parameters defined in "PerfCounter" configuration file records.
I think it could be:
"Aliases cannot be reused in "PerfCounter" parameters."
Description also should provide a hint that it allows to create several items in zabbix frontend with different custom keys, which will return identical value from agent.
Might be single workaround in case: need several LLD rules with identical keys but with different filters.
2. Default zabbix_agentd.conf must have the parameter syntax example. Also need to mention that multiple aliases are allowed.
3. For both 1 and 2: why we say "Sets an alias for parameter" ?
Why not "Sets an alias for item key" ?
Which would be more correct! IMO.