FAQ
Hi All,

I have a module that executes ifup and ifdown on interfaces. The node file
contains the following entries

node ip::addr{ "eth0":
....
}

node ip::addr{ "bond0":
....
}

node ip::addr{ "eth1":
....
}

node ip::addr{ "vlan2":
....
}

The problem I have is that vlan2 is sat on top of bond0, when bond0 file
gets changed and an "exec" is run it takes down vlan2, when bond0 comes up
vlan2 stays down. Now in my exec for vlan 2 I put in a subscribe =>
/etc/sysconfig/network-scripts/ifcfg-bond0. But what happens now is that
when the ifcfg-bond0 file changes, vlan2 interface goes up and down as
expected, but it happens before bond0 goes up and down, hence I get the
same affect of vlan2 being down.

My question is how can I ensure that vlan2 only gets executed after bond0
exec?

Thanks
Dan

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  • Felix Frank at Mar 25, 2013 at 12:59 pm
    Hi,
    On 03/22/2013 09:27 PM, Dan wrote:
    node ip::addr{ "eth0":
    Uhm, what? node ip::addr ? Wouldn't that tell puppet that there is a
    host in your setup by the name of ip::addr? Confusing...

    Anyway, execution order is controlled using require/before parameters.
    These should all work, assuming the correct syntax is what I suppose it is:

    ip::addr { "vlan2": ..., require => Ip::Addr["bond0"] }

    or

    ip::addr { "bond0": ..., before => Ip::Addr["vlan2"] }

    or even

    Ip::Addr["vlan2"] -> Ip::Addr["bond0"]

    although I may have that last one backwards, I'm not accustumed to using it.

    HTH,
    Felix

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  • Jcbollinger at Mar 25, 2013 at 1:15 pm

    On Monday, March 25, 2013 7:59:03 AM UTC-5, Felix.Frank wrote:
    Hi,
    On 03/22/2013 09:27 PM, Dan wrote:
    node ip::addr{ "eth0":
    Uhm, what? node ip::addr ? Wouldn't that tell puppet that there is a
    host in your setup by the name of ip::addr? Confusing...

    You beat me to the punch.

    Indeed, if the parser actually accepts code of that form then it
    constitutes a whopping big bug.

    Anyway, execution order is controlled using require/before parameters.
    These should all work, assuming the correct syntax is what I suppose it
    is:

    ip::addr { "vlan2": ..., require => Ip::Addr["bond0"] }

    or

    ip::addr { "bond0": ..., before => Ip::Addr["vlan2"] }

    or even

    Ip::Addr["vlan2"] -> Ip::Addr["bond0"]

    although I may have that last one backwards, I'm not accustumed to using
    it.
    Yes, you do have it backwards. The chain operators read like a flow chart:
    the arrow goes from the resource that must be applied earlier to the
    resource that must be applied later, so the last statement says the
    opposite of the earlier two.


    John

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postedMar 22, '13 at 8:27p
activeMar 25, '13 at 1:15p
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