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OSMF Operations working group meeting
Thursday 17 October 2024, 19:00 London time, unless rescheduled
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Frequency of meetings: every two weeks, on Thursday at 19:00 London time, unless rescheduled.
Video room
Participants
Reportage
Buying DL380
Grant has discussed some of the options with Paul.
AArnet servers removal
Related to action item 2024-09-19 Grant to confirm that the AArnet servers will be removed and to ask the Australian community whether there is interest in hosting/providing a render server in Australia or Asia/Pacific [2024-09-19 topic: AArnet Servers going away]
On previous OPS meeting discussion
Grant during one of his recent weekly meetings with Dani Waltersdorfer (board) mentioned that the previous OPS meeting was heated and there were disputes. Dani decided to investigate it further. Guillaume asked Grant to talk to him, as the new board is going to wonder what had happened. Grant made clear that he had not asked Dani to follow-up.
Agenda
OpenMapTiles application?
Short discussion, and decision to discuss this with Paul in two weeks.
Other points mentioned
On Paul's Vector Tiles project
Suggestions:
Other point mentionedu>: Paul's tiles are live updated.
Editor inclusion policy?
There seemed to be a desire on the community discussion https://community.openstreetmap.org/t/updated-proposal-osm-org-editor-inclusion-policy-draft-2/116547 to not require explicit membership to the panel.
Suggestion: The board to decide.
Decision: Examine feedback on community forum and re-discuss in two weeks.
''A part of the discussion was not minuted after request.''
Imagery Server Proposal
Kessie and Ironbelly are very old.
Kessie has 12x2TB. It's not capable of running modern imagery stuff - it's just too slow. CPU is like a low cost 2012 CPU.
Ironbelly is 10 years old. Disks failing; ongoing replacements with cheap spares. Failures keep happening. Weird unmonitored raid card, weird oob. Management tools hard to get, etc.
Grant is proposing a HP Gen9 DL380, like our other servers. Decent one is £500 excluding storage disks. Grant is suggesting six large disks; Paul thinks we should use SSDs/NVMes, but Grant thinks the cost isn't justified.
Grant has a personal machine we can use. See email.
AWS is possible, but has many unknowns.
Grant will ask the chat for a vote including Paul.
On imagery storage and access
Total storage requirement: At least 50 terabytes.
On replacing Ironbelly and Kessie
Ironbelly
Kessie:
On not doing the work on AWS
On using COGs
Concerns:
On potential latency issues
If Cloud Optimized GeoTIFFs (COGs) are not aligned with the intended tile boundaries, compositing multiple layers of COGs becomes necessary, which is resource-intensive. At tile boundary edges, four range requests are often needed, requiring substantial CPU power to composite these layers with masking. High latency in these requests can lead to slow tile loading. For instance, in the case of the Texas imagery that Grant worked on, hundreds of COG files had to be composited, resulting in considerable slow tile loading.
On storage
Processing will result in output in a more storage-efficient format, like WebP, where the volume is typically reduced to about half or a quarter of the original. However, even with this reduction, the total storage required is larger than the initial dataset, as both the initial files and the WebP ones have to be stored.
Other points mentioned during discussion
Suggestion: Post on the forum that we're getting a new imagery server, we're doing it the old way because this is what we know, but if someone wants to play with this project and this project and build a proof of concept.
On options and cost
DL380 of the Gen 10, 12 bays - GBP 19K.
6x 18-20TB enterprise new SAS disks for £1,650.
Grant purchased the machine with his own money, as he was planning to go to Amsterdam and will take it back if OPS decide not to use it. Has seven 6TB disks, which is enough storage to get started and run some imagery. Needs more storage, which would have to be added with remote hands.
Any Other Business
Staging of blog.osm.org on Tabaluga
Open Ops Tickets
Review open, what needs policy and what needs someone to help with…
https://github.com/openstreetmap/operations/issues
https://github.com/orgs/openstreetmap/projects/1
https://github.com/orgs/openstreetmap/projects/1/views/2?filterQuery=-is%3Aclosed
Action items
2024-09-19 Paul to add the OpenMapTiles application to the next agenda, together with the editor inclusion policy. [2024-09-19 Reportage]# On the 2024-10-17 agenda2024-09-19 Grant to come up with estimates for space needs in next 5 years and cost for Ironbelly replacement* [2024-09-19 topic: Ironbelly Replacement? ]Done~~* 2024-05-02 OPS to revisit the OpenMapTiles application. # 2024-06-13 They haven't responded to the questions. Paul to email them again. # 2024-07-25 They have replied, OPS haven't had a chance to look at the answers. ~~
OPS pads for 2024 meetings
Minutes published on the OSMF website
Automatic addition of OPS meetings to your calendar
If you want future OPS meetings to be automatically added to your calendar,
you can subscribe to the following iCalendar link. Instructions on how to do
that depends on which calendar software/service you use. The link is provided
for your convenience.
Note that:
from your side syncs/checks for updates.