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Diffstat (limited to 'topics/systems/reboot-tux01-tux02.gmi')
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diff --git a/topics/systems/reboot-tux01-tux02.gmi b/topics/systems/reboot-tux01-tux02.gmi new file mode 100644 index 0000000..e3dbc91 --- /dev/null +++ b/topics/systems/reboot-tux01-tux02.gmi @@ -0,0 +1,40 @@ +# Rebooting the GN production machine(s) + +I needed to add the hard disks in the BIOS to make them visible - one of the annoying aspects of these Dell machines. First on Tux02 I cheched the borg backups to see if we have a recent copy of MariaDB, GN2 etc. The DB is from 2 days ago and the genotypes of GN2 are a week old (because of a permission problem). I'll add a copy by hand of both - an opportunity to test the new 10Gbs router. + +# Tasks + +Before rebooting + +On Tux02: + +* [X] Check backups of DB and services +* [X] Copy trees between machines + +On both: + +* [X] Check network interface definitions (what happens on reboot) +* [X] Check IPMI access - should get serial login + + +# Info + +## Routing + +On tux02 eno2d1 is the 10Gbs network interface. Unfortunately I can't get it to connect at 10Gbs with Tux01 because the latter is using that port for the outside world. + +Playing with 10Gbs on Tux01 sent the hardware in a tail spin, what to think of this solution on + +``` +bnxt_en 0000:01:00.1 (unnamed net_device) (uninitialized): Error (timeout: 500015) msg {0x0 0x0} len:0 + +Solution was to power down the server(s) and *remove* power cords for 5 minutes. +``` + +=> https://www.dell.com/community/PowerEdge-Hardware-General/Critical-network-bnxt-en-module-crashes-on-14G-servers/td-p/6031769 + +The Linux kernel shows some fixes that are not on Tux01 yet + +=> https://lkml.org/lkml/2021/2/17/970 + +In our case a simple reboot worked, fortunately. |