Add Weds

content/blog/wk14day3.md

@@ -1,7 +1,77 @@
 ---
-title: "Week 14, Wednesday:"
+title: "Week 14, Wednesday: Candy and FrysIX Moves"
 date: 2024-10-30T21:55:00+02:00
-draft: true
 ---
 
-{{< image frame="true" width="17em" float="right" src="/img/headline/todo.png" alt="Credit: " >}}
+{{< image frame="true" width="17em" float="right" src="/img/headline/aurora.png" alt="Credit: Aurora, YouTube" >}}
+
+Today I did pretty much nothing :) I spent a bunch of time in the flight simulator flying circuits
+and trying to keep my altitude. Also I did about twenty (flyby) approaches where I would try to have
+a sink rate of 400ft/min and 60kts with flaps at 10 degrees. The airplane is sluggish at this speed,
+so there's a bit of a delay before the correct attitude is reached. Think of it as a really slow PID
+controller. I'm still pretty terrible at it, but at least I am putting the airplane down in one
+piece. Doing visual approach is really difficult by the way, because looking left and right is a bit
+awkward. Seeing as my spiffy video card has four monitor outputs, I think I'll try to get my hands
+on some cheap screens that could serve as left and right windows.
+
+After lunch I take another look at the `sFlow` plugin - for some reason it is emitting large
+interface IDs (1e9 + hw_if_index), but Neil has written it such that if a Linux Control Plane pair
+exists, it'll use the Linux vif_index. Clearly that isn't happening, and I have a pending call with
+him tonight to try to get to the bottom of it.
+
+In the late afternoon, Quinn Marina and I draw smiley faces on our halloween candy baggies, and fill
+them with an inordinate amount of candy. We make 120 baggies, as in previous years, we've often been
+able to offload 100+ of these things to the neighborhood kids, the weather is going to be good
+tomorrow, and Quinn decorated our front porch in a very inviting way: I'm sure the kids will enjoy
+it, but not as much as we will, methinks :)
+
+After dinner, Marina and I watch some news, and then I retire to the basement for my call. I futz a
+bit with the audio, but eventually am able to greet Peter and Neil. We talk about a few operational
+details, notably:
+
+1.   the ability of the `hsflowd` to send its update traffic from a network namespace different to
+the main one (because VPP wants to run in a `dataplane` netns). The tool already supports this,
+yaay!
+1.   if samples are received before the interface counters (with their respective interface IDs
+mapped to the Linux Control Plane vif_index'es, then those samples will arrive at the collector with
+these if_index values of 1000000001 and so on. This will make tools like Akvorado try to retrieve
+SNMP indexes with that - but they won't exist and this is a bug. Neil agrees, and will inhibit
+sending of samples until after the first counter for an interface is found
+1.   a propose the large numbers, they are repeatably and permanemently `1e9+idx` for me, while they
+should really be the LCP vif_index. We add some debug logging, but it doesn't trigger. Then we run
+out of time and we promise each other we'll both look into it offline.
+
+All in all, a super productive meeting, and once again I learned a tonne.
+
+At 23:00 I need to complete the move of the FrysIX virtual machines from my hypervisor at Equinix
+AM3 to another one at Qupra, which Arend connected to FrysIX infrastructure yesterday. This move is
+important, because the SSDs in the AM3 hypervisor are crappy, while the ones in Qupra are enterprise
+SAS-12 SSDs from NetApp: much faster, must higher write rate, much longer durability (famous last
+words).
+
+I take a snapshot copy of `rs2.frys-ix.net` first, and copy that VM to its new spot, but disconnect
+the FrysIX port, by moving the virtio network card from the FrysIX bridge group to an empty bridge
+group. I boot it, and upgrade it from Debian Bullseye to Debian Bookworm while I'm here. I have it
+download its config and at 23:00 exactly, I shutdown the old `rs2` and connect the virtio network
+interface to FrysIX in the new spot. Finally, I add VLAN 2604 (production) and 2605 (quarantine) to
+the port in Qupra, and a few seconds later we're fully online. The migration of `rs2` took about 150
+seconds of downtime. Not bad, eh??
+
+The IXPManager virtual machine is a bit larger, but thanks to ZFS block device snapshots I can make
+an incremental ZFS transfer, halt the old `ixpmanager` VM, quickly `zfs send | zfs recv`  the last
+bits from the penultimate snapshot to HEAD, and boot the VM on its new spot. The IXPManager comes up
+within 10 minutes or so. All in all, the maintenance window lasted from 23:00-23:35 and I was quite
+happy with the results.
+
+## Pictures of the Day
+
+{{< gallery-category >}}
+  {{< gallery-photo fn="2024-10-30/IMG_2249.JPG" caption="The MS Flight Simulator with an ad-hoc righthand side window, easier to see the airport when doing righthand patterns. Need another screen :)" >}}
+  {{< gallery-photo fn="2024-10-30/IMG_2250.JPG" caption="We are filling candy baggies for the trick-or-treat'ers tomorrow. We expect one hundred or so kids." >}}
+  {{< gallery-photo fn="2024-10-30/IMG_2253.JPG" caption="The amount of sugar we are pumping into the youth in Bruttisellen is .. significant." >}}
+  {{< gallery-photo fn="2024-10-30/IMG_2254.JPG" caption="The empty distribution-sized bags from Aligro. That's ... a lot of sugar." >}}
+{{< /gallery-category >}}
+
+{{< gallery-modal >}}
+{{< gallery-script >}}
+