[syslog-ng] Go away

Gabor Nagy (gnagy) Gabor.Nagy at oneidentity.com
Thu Jan 16 12:12:55 UTC 2020


Hi!

You can force syslog-ng to close the source connections in case of a reload.
https://www.syslog-ng.com/technical-documents/doc/syslog-ng-open-source-edition/3.25/administration-guide/21#TOPIC-1349365

keep-alive()
Type: yes or no
Default: yes
Description: Specifies whether connections to sources should be closed when syslog-ng is forced to reload its configuration (upon the receipt of a SIGHUP signal).
Note that this applies to the server (source) side of the syslog-ng connections, client-side (destination) connections are always reopened after receiving a HUP signal unless the keep-alive option is enabled for the destination.

Regards,
Gabor
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Hello,

I am wondering if there is any facility to tell a client to go away? i.e.
https://http2.github.io/http2-spec/#GOAWAY<https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhttp2.github.io%2Fhttp2-spec%2F%23GOAWAY&data=02%7C01%7Cgabor.nagy%40oneidentity.com%7C1031a12745b94d320c7b08d79a7bfb48%7C91c369b51c9e439c989c1867ec606603%7C0%7C0%7C637147729626483809&sdata=W%2F3xgLLzQWAYqS4pxUwJf9QriKDI16VqvAugr8zsRjI%3D&reserved=0>

I know syslog-ng is not http2 but is there any side-channel mechanism a central server can use to make a client go away?

The use case I am thinking is doing a rolling restart of a pool of syslog-ng central server.
I think this could also be useful to cycle connections periodically, i.e. to rebalance connections to a central server.

Thanks

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