Re: Can nginx "events" block be configured in an include file?
On Tue, Nov 03, 2020 at 10:06:30AM -0600, David Wright wrote: > On Tue 03 Nov 2020 at 08:03:24 (-0600), Dave Sherohman wrote: > > Another (off-list) reply suggested using a script to edit nginx.conf > > rather than doing it by hand, which looks like the best solution for my > > specific case. > > I obviously haven't seen that suggestion, but why write a script > yourself when software exists to do that already. Because my deployment script already exists and does several things other than editing nginx.conf, and I prefer being able to deploy with one command instead of two. > Patch, of course, has the same pedigree as Perl, both being creations > of Larry Wall. I'm passigly familiar with `patch`, but wasn't aware that Larry was the original author. Thanks for that tidbit! -- Dave Sherohman
Re: Can nginx "events" block be configured in an include file?
On Ma, 03 nov 20, 08:03:24, Dave Sherohman wrote: > On Tue, Nov 03, 2020 at 07:57:40AM -0500, Greg Wooledge wrote: > > On Tue, Nov 03, 2020 at 03:35:58AM -0600, Dave Sherohman wrote: > > > tl;dr: I need to increase worker_connections on my nginx servers, but > > > don't want to edit the debian-provided nginx.conf due to that causing > > > future upgrade hassles. Is this possible? > > > No. > > Ah, well. That's what I expected, but thanks for confirming it. > > Another (off-list) reply suggested using a script to edit nginx.conf > rather than doing it by hand, which looks like the best solution for my > specific case. My site-specific config files are generated from > templates using a Perl deployment script, and I also have hooks there > which I can use to edit nginx.conf without needing to generate the whole > thing from a template, and that will also handle nginx config changes > coming from debian by re-patching the config the next time we deploy. Since you're already using Perl, it seems that Config::Model (package libconfig-model-perl) can be used to automate configuration updates on package upgrade. Kind regards, Andrei -- http://wiki.debian.org/FAQsFromDebianUser signature.asc Description: PGP signature
Re: Can nginx "events" block be configured in an include file?
On Tue 03 Nov 2020 at 08:03:24 (-0600), Dave Sherohman wrote:
> On Tue, Nov 03, 2020 at 07:57:40AM -0500, Greg Wooledge wrote:
> > On Tue, Nov 03, 2020 at 03:35:58AM -0600, Dave Sherohman wrote:
> > > tl;dr: I need to increase worker_connections on my nginx servers, but
> > > don't want to edit the debian-provided nginx.conf due to that causing
> > > future upgrade hassles. Is this possible?
>
> > No.
>
> Ah, well. That's what I expected, but thanks for confirming it.
>
> Another (off-list) reply suggested using a script to edit nginx.conf
> rather than doing it by hand, which looks like the best solution for my
> specific case.
I obviously haven't seen that suggestion, but why write a script
yourself when software exists to do that already.
Keep a copy of the original file, and then edit the file so that it
works in the way you require. Now run diff on the two files and
keep the output.
When the package is upgraded and your configuration is modified,¹
you can feed the new file and your diff file into patch, which
will merge them to produce the new configuration +with+ your edits.
Before you do any of this, read man patch to get an overview
of what patch can do for you.
> My site-specific config files are generated from
> templates using a Perl deployment script, and I also have hooks there
> which I can use to edit nginx.conf without needing to generate the whole
> thing from a template, and that will also handle nginx config changes
> coming from debian by re-patching the config the next time we deploy.
Patch, of course, has the same pedigree as Perl, both being creations
of Larry Wall.
¹ If your configuration file is actually a package's conffile,
then much of the work above will be duplicated by the
installation scripts using the conffile.dpkg-{old,new,tmp}
mechanism.
Cheers,
David.
Re: Can nginx "events" block be configured in an include file?
On Tue, Nov 03, 2020 at 07:57:40AM -0500, Greg Wooledge wrote: > On Tue, Nov 03, 2020 at 03:35:58AM -0600, Dave Sherohman wrote: > > tl;dr: I need to increase worker_connections on my nginx servers, but > > don't want to edit the debian-provided nginx.conf due to that causing > > future upgrade hassles. Is this possible? > No. Ah, well. That's what I expected, but thanks for confirming it. Another (off-list) reply suggested using a script to edit nginx.conf rather than doing it by hand, which looks like the best solution for my specific case. My site-specific config files are generated from templates using a Perl deployment script, and I also have hooks there which I can use to edit nginx.conf without needing to generate the whole thing from a template, and that will also handle nginx config changes coming from debian by re-patching the config the next time we deploy. -- Dave Sherohman
Re: Can nginx "events" block be configured in an include file?
On Tue, Nov 03, 2020 at 03:35:58AM -0600, Dave Sherohman wrote: > tl;dr: I need to increase worker_connections on my nginx servers, but > don't want to edit the debian-provided nginx.conf due to that causing > future upgrade hassles. Is this possible? > Is there any way to accomplish this using only new files of my own > creation, while leaving all debian-provided config files in a pristine > state? No. You will have to edit the nginx.conf file, and this could, in theory, cause you to need to merge new versions of the nginx.conf file on release upgrades. Basically, any section of the nginx.conf file can be split out into its own separate file, and replaced with an "include" directive in the main file. So, copy the "events" block from nginx.conf into your own file with whatever name you like, and then replace that block with "include /etc/nginx/yourfile;" in nginx.conf. Now you can edit yourfile however often you like without needing to touch nginx.conf any more, at least until a release upgrade.
