Re: [VR] dnsmasq reload instead of restart

[Pierre-Luc Dion]

good point !

Based on what I understand from dnsmasq, reload will not update conf for
the interface of a new network tier.



On Fri, Nov 24, 2017 at 6:44 PM, Erik Weber  wrote:

> I'm not sure if this applies to dnsmasq or not, but some services does
> not bind to new interfaces during a reload.
> Meaning you'll have to be sure the reason you're reloading isn't
> because of something that added a device (say adding a new tier or
> similar).
>
> --
> Erik
>
> On Fri, Nov 24, 2017 at 9:05 PM, Pierre-Luc Dion 
> wrote:
> > Hi,
> >
> > We recently found a way to reload dnsmasq process instead of doing a
> > restart.
> > Does anyone see a problem with that?  Basically we have to change where
> the
> > file /etc/dhcphosts.txt is define in the config so it would be define via
> > "--dhcp-hostsfile=/etc/dhcphosts.txt" when the process is start so it
> would
> > be re-read in a kill -HUP.
> >
> > The problem to solve here is that during VM.CREATE in a VPC, the dns
> > service is restarted and cause DNS service interruption to VM inside the
> > VPC.
> >
> > We are preparing a PR for this.
> >
> > is this could be problematic for rVR ?
> >
> > Thanks,
> >
> > PL
>

Re: [VR] dnsmasq reload instead of restart

[Erik Weber]

I'm not sure if this applies to dnsmasq or not, but some services does
not bind to new interfaces during a reload.
Meaning you'll have to be sure the reason you're reloading isn't
because of something that added a device (say adding a new tier or
similar).

-- 
Erik

On Fri, Nov 24, 2017 at 9:05 PM, Pierre-Luc Dion  wrote:
> Hi,
>
> We recently found a way to reload dnsmasq process instead of doing a
> restart.
> Does anyone see a problem with that?  Basically we have to change where the
> file /etc/dhcphosts.txt is define in the config so it would be define via
> "--dhcp-hostsfile=/etc/dhcphosts.txt" when the process is start so it would
> be re-read in a kill -HUP.
>
> The problem to solve here is that during VM.CREATE in a VPC, the dns
> service is restarted and cause DNS service interruption to VM inside the
> VPC.
>
> We are preparing a PR for this.
>
> is this could be problematic for rVR ?
>
> Thanks,
>
> PL

[VR] dnsmasq reload instead of restart

[Pierre-Luc Dion]

Hi,

We recently found a way to reload dnsmasq process instead of doing a
restart.
Does anyone see a problem with that?  Basically we have to change where the
file /etc/dhcphosts.txt is define in the config so it would be define via
"--dhcp-hostsfile=/etc/dhcphosts.txt" when the process is start so it would
be re-read in a kill -HUP.

The problem to solve here is that during VM.CREATE in a VPC, the dns
service is restarted and cause DNS service interruption to VM inside the
VPC.

We are preparing a PR for this.

is this could be problematic for rVR ?

Thanks,

PL