[syslog-ng] [EXTERNAL] Re: Upgrade to 3.31 from 3.19

Tue Mar 23 14:50:30 UTC 2021

Mark - you can use something disposable like
docker/virtualbox/vmware/parallels and your old config file, then run "sudo
syslog-ng -s" - any problems with your config will be displayed on the
command line.

On Tue, Mar 23, 2021 at 10:44 AM Faine, Mark R. (MSFC-IS40)[NICS] <
mark.faine at nasa.gov> wrote:

> Thanks, I did this in a docker container and the only warning I got was
> for the @version value.  It said it was using compatibility mode.  If I
> simply change the version line to 3.31 it won't even start, so that's not
> an option.  I can go up to 3.28 before it stops starting.
>
>
>
> I would rather not try Peter's solution but I will if I have to.  I was
> hoping I could do as you said and simply correct the errors, but I get no
> other error messages.
>
>
>
> Thanks,
>
> -Mark
>
>
>
>
>
> *From:* syslog-ng <syslog-ng-bounces at lists.balabit.hu> *On Behalf Of *Balazs
> Scheidler
> *Sent:* Monday, March 22, 2021 23:42
> *To:* Syslog-ng users' and developers' mailing list <
> syslog-ng at lists.balabit.hu>
> *Subject:* [EXTERNAL] Re: [syslog-ng] Upgrade to 3.31 from 3.19
>
>
>
> If all you want is to upgrade syslog-ng, then run the new version with an
> unchanged config file (on a separate test system even), and observe
> "configuration" change warnings during startup.
>
>
>
> The one you'll definitely get is about the '@version' line at the top of
> your config. This probably says '@version: 3.19'.
>
>
>
> Don't fix the version declaration until you fix the rest of the warnings:
> syslog-ng operates in compatibility mode with the old version, and gives
> you instructions about what was changed since the old version. These
> warnings are emitted during startup, so look for log messages generated by
> syslog-ng right after starting up.
>
>
>
> For instance, if a default changes between your old version and current
> versiony syslog-ng would tell you something like
>
>
>
> WARNING: the default for whatever option was changed in syslog-ng 3.25,
> please adapt your configuration
>
>
>
> What this means is that you might need to be explicit about the setting in
> your config and not rely on the default. So add the option and its desired
> value to the config explicitly. Or if you thing the new default is ok, just
> ignore the message and fix the rest too.
>
>
>
> These days the number of config changes is pretty rare, so you might not
> have any warnings, except for @version.
>
>
>
> Once you handled all the warnings just update @version and you are done.
>
>
>
> Bazsi
>
>
>
> On Tue, Mar 23, 2021, 00:02 Peter Kokai (pkokai) <
> Peter.Kokai at oneidentity.com> wrote:
>
> Hello,
>
> I am not aware such database or tools that can do it out of box. In
> general your old configuration should at least syntax check in newer
> version, and probably even start up without much trouble. If something is
> replaced in the config usually the old option is kept and in the background
> uses the new mechanism.
> There is a tool
> https://github.com/syslog-ng/syslog-ng/blob/master/contrib/config_option_database/syslog-ng-cfg-db.py
> <https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fsyslog-ng%2Fsyslog-ng%2Fblob%2Fmaster%2Fcontrib%2Fconfig_option_database%2Fsyslog-ng-cfg-db.py&data=04%7C01%7Cmark.faine%40nasa.gov%7C6208b010aba74a2aab2e08d8edb6309a%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637520714070930571%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=Tir3CwKde%2BeLH7P2aNed7buq7EA7O8jJHfhZMAAMoJI%3D&reserved=0>
> That prints all possible configuration options for destination, parser and
> source currently. But you still need to run this for both version and
> compare.
>
> The issue with that, the tool was not present in 3.19.1 and just
> copy&paste won't work (tried), some adjustment might be needed.
>
> I think if you have time to work on, the tool can be tricked into doing
> your use case.
> As far as I am know the tool itself actually uses bison to generate the
> possible tree (xml, and dot format).
> Once converted to a graph, all you need is a way to diff graphs.
>
> Checking via the diff looks like even more work.
> git diff syslog-ng-3.19.1...syslog-ng-3.31.1 --stat  -- '*-grammar.y*'
> ...
> 49 files changed, 1656 insertions(+), 828 deletions(-)
>
>
>
> --
> kokan
>
> ________________________________________
> From: syslog-ng <syslog-ng-bounces at lists.balabit.hu> on behalf of Faine,
> Mark R. (MSFC-IS40)[NICS] <mark.faine at nasa.gov>
> Sent: 22 March 2021 23:03
> To: Syslog-ng users' and developers' mailing list
> Subject: [syslog-ng] Upgrade to 3.31 from 3.19
>
> CAUTION: This email originated from outside of the organization. Do not
> follow guidance, click links, or open attachments unless you recognize the
> sender and know the content is safe.
>
> I need to know the significant format differences between the
> configuration files for the two versions.  Is there some place I can go to
> get that or some command I can run to convert the file?
>
> Thanks,
> -Mark
>
>
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