Re: [Nagios-devel] multiple host parents
Posted: Thu Mar 17, 2005 2:43 am
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Daniel W=FCthrich wrote:
> Hi
>
> I had some discussions about host parents. If using more than one
> parent nagios assumes that the parents are redundant paths. But in our
> VLAN environment I need the possibility to define multiple parents
> where ALL parents are needed. E.g. a Host depends on a router AND a
> switch (this is possible, not the host depends on the switch and the
> switch depend on the router!).
>
> It doesn't seem that there's a possibility to implement this,
> especially in a big network. Therefore I modified nagios source:
> I added a new variable in the host definition where I can say whether
> the host depends on at least one parent (as it already is) or whether
> it depends on all parents at the same time.
>
> In our network it does work and now I would like to contibute this to
> the official source.
>
> Daniel
Independent of nagios i had some thoughts about service-dependencies. My
prefered solution is to "weight" the dependencies. e.g.:
serviceA depends on serviceB weight 1 and serviceC weight 0.5
If in this szenario serviceC fails serviceA is degraded 50%. If serviceB
fails serviceA fails also. Additionally a group of similar services
should be definable with a "weight" for each service and a "weight" for
the complete group.
Chris
- --
financial.com AG
Maria-Probst-Stra=DFe 19 Tel.: ++49(0)89/318528-44
D- 80939 M=FCnchen Fax.: ++49(0)89/318528-28
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This post was automatically imported from historical nagios-devel mailing list archives
Original poster: [email protected]
Hash: SHA1
Daniel W=FCthrich wrote:
> Hi
>
> I had some discussions about host parents. If using more than one
> parent nagios assumes that the parents are redundant paths. But in our
> VLAN environment I need the possibility to define multiple parents
> where ALL parents are needed. E.g. a Host depends on a router AND a
> switch (this is possible, not the host depends on the switch and the
> switch depend on the router!).
>
> It doesn't seem that there's a possibility to implement this,
> especially in a big network. Therefore I modified nagios source:
> I added a new variable in the host definition where I can say whether
> the host depends on at least one parent (as it already is) or whether
> it depends on all parents at the same time.
>
> In our network it does work and now I would like to contibute this to
> the official source.
>
> Daniel
Independent of nagios i had some thoughts about service-dependencies. My
prefered solution is to "weight" the dependencies. e.g.:
serviceA depends on serviceB weight 1 and serviceC weight 0.5
If in this szenario serviceC fails serviceA is degraded 50%. If serviceB
fails serviceA fails also. Additionally a group of similar services
should be definable with a "weight" for each service and a "weight" for
the complete group.
Chris
- --
financial.com AG
Maria-Probst-Stra=DFe 19 Tel.: ++49(0)89/318528-44
D- 80939 M=FCnchen Fax.: ++49(0)89/318528-28
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9hMqc5YU92Rd7QglmoDE9p0=3D
=3DNHSv
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This post was automatically imported from historical nagios-devel mailing list archives
Original poster: [email protected]