Thanks! Updating the SELinux mode fixed my issue.

I changed /etc/selinux/config to have this:
SELINUX=permissive

After reboot, rsyslog-omhttp can successfully send to the REST api.

Kevin


On Mon, 25 Apr 2022 at 11:06, Mariusz Kruk via rsyslog <
[email protected]> wrote:

> Is your SELinux in Enforcing mode?
>
> MK
>
> On 25.04.2022 17:15, Kevin McKibbin via rsyslog wrote:
> > The curl command works properly. I can see the http message in the REST
> > application.
> >
> > When trying sending through rsyslog, I can't see anything happening:
> > - tcpdump doesn't report anything captured (but running the curl command
> > shows captured packets)
> > - ss -an doesn't report any ports being opened to send to the rest
> > application (but running the curl command shows a port getting opened)
> > - the omhttp log shows one line when the first syslog message is
> processed
> > and then does not print any additional lines in the log until I restart
> > rsyslog
> >
> > This is basic http, not https so there's no cert errors.
> >
> > Is there any additional debug logging I can look at to figure out what's
> > wrong?
> >
> > Kevin
> >
> > On Sat, 23 Apr 2022 at 00:32, David Lang <[email protected]> wrote:
> >
> >> what do you get on the server that you are posting to? does it show the
> >> connection, does it show any error?
> >>
> >> do a tcpdump and see if the connection is happening
> >>
> >> try doing a curl manually, see if you get an error (a possibility would
> be
> >> a
> >> certificate error for example)
> >>
> >> David Lang
> >>
> >>
> >> On Sat, 23 Apr 2022, Kevin McKibbin via rsyslog wrote:
> >>
> >>> Date: Sat, 23 Apr 2022 00:14:21 -0600
> >>> From: Kevin McKibbin via rsyslog <[email protected]>
> >>> To: [email protected]
> >>> Cc: Kevin McKibbin <[email protected]>
> >>> Subject: [rsyslog] omhttp - can't get simple case to send http
> >>>
> >>> I have a simple configuration where I'm trying to post the syslog
> message
> >>> to a REST application. But the omhttp module doesn't seem to be
> sending.
> >>>
> >>> This is my configuration:
> >>> module (load="omhttp")
> >>> template(name="tpl1" type="string" string="{\"type\":\"syslog\",
> >>> \"host\":\"%HOSTNAME%\"}")
> >>> if (re_match($msg, "(.*REST.*)")) then {
> >>> action(
> >>>     type="omhttp"
> >>>     server="192.168.55.4"
> >>>     serverport="8080"
> >>>     restpath="log"
> >>>     template="tpl1"
> >>>     action.resumeRetryCount="3"
> >>>     errorfile="/var/log/omhttp_errors.log"
> >>>     checkpath=""
> >>> )
> >>> }
> >>>
> >>> This is the log that gets printed in /var/log/omhttp_errors.log when I
> >>> inject a matching syslog message:
> >>> { "request": { "url": "https:\/\/192.168.55.4:8080\/log", "postdata":
> >>> "{\"type\":\"syslog\", \"host\":\"localhost\"}" }, "response": {
> >> "status":
> >>> 0, "message": "NULL: curl request failed or no response" } }
> >>>
> >>>
> >>> This curl command successfully sends the request to my REST application
> >> so
> >>> I know that the application is running and the send is possible from
> the
> >> VM.
> >>> curl -X POST -H "Content-Type: application/json" -d '{"name": "test"}'
> >>> http://192.168.55.4:8080/log
> >>>
> >>> What am I doing wrong?
> >>>
> >>> I was using version 2202, but also tried upgrading to 2204.
> >>>
> >>> Thanks.
> >>> Kevin
> >>> _______________________________________________
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