Am 10.12.2016 um 01:50 schrieb Tim Landscheidt:
> (anonymous) wrote:
>
>> […]
>
>> Usually the host_aliases file is read live, i.e. you can
>> change any entry therein and it will be honored instantly
>> without a restart.
>
> Are you sure about that?
I made some tests by changing the known hosts in NIS and accordingly
host_aliases. Besides the tools gethostby{name,addr} also the qmaster accept a
newly added host by the just defined alias. For me it appears be to be read
live.
Maybe it's different when it cached already an older name, and would reread
either only on a startup or after the time out as you mentioned. So both
observations could be right.
-- Reuti
> In the past I have seen symptoms
> consistent with host_aliases only being read at startup.
> Unfortunately I do not understand SGE's architecture and
> lifecycles, so I cannot say whether all that code beneath
> source/libs/comm refreshes only host entries after some time
> (i. e. to resolve them again via DNS) or also host_aliases.
>
>> Maybe the order is important, i.e. in
>> your case to remove the host first from exechosts lists,
>> then from the host_aliases and finally from the network
>> completely would have given instant success.
>
> Hopefully we will try this next time.
>
> Tim
>
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