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klaas-

104 karma · joined July 27, 2018

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klaas-··on Tailscale Traces Database Corruption to 16y/o SQLite WAL-Reset Bug
> This investigation is a useful reminder: running boring technology in a non-standard way is a risk. The common paths and standard configurations are incredibly well-tested and reliable. Most people use SQLite in a standard configuration and never face this sort of issue. Everything we were doing was a public, documented, supported configuration—but by taking manual control of the checkpointing process and running at our own aggressive pace, we stepped off the well-trodden operational path.

I feel like they missed a key takeaway from their own argument here, they should not be running a non-standard configuration :)

klaas-··on Ask HN: Security advisory Azure trusted launch VMs
Seems there are more people interested in this: https://learn.microsoft.com/en-us/answers/questions/5962465/... https://www.reddit.com/r/sysadmin/comments/1ve63cg/azure_vm_...

Tracking ID in MSFT is DZ_H-21Z

klaas-··on Ask HN: Security advisory Azure trusted launch VMs
I would be interested in a severity score or something similar -- otherwise I can't judge how important it is to fix -- is this a "friday right now" problem or a monday is fine problem ;)
klaas-··on Cockpit is a web-based graphical interface for servers
from a company (RHEL users) POV: EntraID support -- we're using https://learn.microsoft.com/en-us/entra/identity/devices/how... for SSH at the moment (not really happy with it but I don't have a better alternate) -- and that does not work for cockpit. So another way to authenticate against entra would be nice for corporate users
klaas-··on The Limits of NTP Accuracy on Linux
maybe I missed that, but why not just combine ptp and ntp within chrony, it does support that.
klaas-··on Danish cities drop Microsoft over Trump policies and financial concerns
I would guess nextcloud
klaas-··on TLS certificate lifetimes will officially reduce to 47 days
I think a very short lived cert (like 7 days) could be a problem on renewal errors/failures that don't self correct but need manual intervention.

What will let's encrypt be like with 7day certs? Will it renew them every day(6 day reaction time), or every 3 days (4 days reaction time). Not every org is suited with 24/7 staffing, some people go on holidays, some public holidays extend to long weekends etc :). I would argue that it would be a good idea to give people a full week to react to renewal problems. That seems impossible for short lived certs.

klaas-··on MacBook Air M4
I'd say the primary problem of framework is security updates for bios etc
klaas-··on Github scam investigation: Thousands of “mods” and “cracks” stealing data
yeah, that was my suspicion as well, seems that AI generated content is mixed with seo-spam or malware. I even tried to report feedback.azure.com as a deceptive site to the major browsers, but they don't share my concerns ;)
klaas-··on Github scam investigation: Thousands of “mods” and “cracks” stealing data
I think Microsoft has a general problem with getting rid of unwanted things within their eco-system. I keep complaining that their feedback.azure.com portal is filled with spam/malware comments and links, but even internally their teams can't reach anyone to get it fixed. Example https://feedback.azure.com/d365community/idea/9d0b22d8-c025-...
klaas-··on Show HN: Terraform Provider for Inexpensive Switches
any of those switches in the right price range for home? I've been looking for a cheap SONiC switch for a long time but those on the supported hardware list are all rack/datacenter sized I would say -- and none do PoE which I really need for home usage (cameras, wifi APs)
klaas-··on Ask HN: Does the Framework laptop stand the test of time?
I have a Framework 13 (12th Gen). I have no complaints about the hardware quality. I love the replace everything concept. I rarely do that though, my ports are always the same - 2x usb-c, 1x usb-a, nic (bulky I remove that one for traveling and replace it with another usb-c).

Having said all that, I would not buy another one right now. The software side of things is just not up to what I expect. They still have not figured out lvfs for this notebook; the last bios update I could install was a manual EFI installer (which is beta at this point it in time I guess, only really "production" ready update is windows based installer). Also the bios I have is now a year old, and there only has been one non-beta bios upgrade in the whole lifetime of this model (~2.5 years). So the software side of things is just miserable... At this point in time I guess the next machine will be something with coreboot+lvfs and regular, timely updates (still taking suggestions ...). I guess I would be willing to give a framework+coreboot situation another try in a couple of years. The main reason for buying this is reusablilty once I decide to move on to the next hardware generation.

klaas-··on Dell is posting unsigned updates to their website which fail to install
yesterday they were also serving a update catalog index that did not match it's signature https://downloads.dell.com/catalog/CatalogIndex.gz // https://downloads.dell.com/catalog/CatalogIndex.gz -- but that was fixed after I complained

and their idrac based firmware updater downloads http(s)://downloads.dell.com/Catalog/Catalog.xml.gz without checking the signature -- and by default without verifying https certificates when using https :D

klaas-··on Upgrading a Toshiba NAS HDD Firmware on Linux
there is something similar for WD drives as well.

https://github.com/not-a-feature/wd_ssd_firmware_update/ https://github.com/not-a-feature/wd_fw_update

I really hope some day there will be a big disk manufacturer that natively supports lvfs - I would pay a premium for that.

klaas-··on Microsoft: Linux Is the Top Operating System on Azure Today
they do talk about actual usage in the talk, but only vcpu wise, not instance wise. For vcpus it's also more than 60% linux
klaas-··on Microsoft: Linux Is the Top Operating System on Azure Today
the actual talk (video in article) says more than 60% of VM vcpus are from linux VMs, it does not talk about instances though. But I would expect Linux to be a lot of very small and very large VMs :)
klaas-··on Microsoft: Linux Is the Top Operating System on Azure Today
so the "real" azure nodes are some kind of special Windows+HyperV but for example their accelerator cards are linuxes: https://cfp.all-systems-go.io/media/all-systems-go-2023/subm...
klaas-··on Microsoft: Linux Is the Top Operating System on Azure Today
you can use azure files nfs, that should be posix compliant, but it comes without auth or encryption ... :)
klaas-··on When Linux Spooked Microsoft: Remembering 1998's Leaked 'Halloween Documents'
And that windows is backed by Linux if performance is key: https://cfp.all-systems-go.io/media/all-systems-go-2023/subm...
klaas-··on Ask HN: Anyone else having bitflips in Azure Network traffic?
I also have a follow up to this topic. I would say it looks like in Azure nobody is verifying TCP checksums. A bitflip in tcp payload should have been noticed at the NIC/tcp level but it reaches my application with corrupted data.
klaas-··on Ask HN: Anyone else having bitflips in Azure Network traffic?
after a full day of searching for a possible cause, someone from microsoft suggested that they try to move the express route gateways (which are seemingly VMs inside of Azure) to a different hypervisor. For now it seems like the first gateway was flipping bits and on new hardware it is running normal again... That was a very interesting day troubleshooting wise
klaas-··on Ask HN: Anyone else having bitflips in Azure Network traffic?
so my guess would be there are more than a few devices between the edge and the express route gateway (which is more or less a VM I was told). So I am guessing right now someone is trying to figure out what hardware is involved in between the two points we captured and looking at that stuff :) For me as a customer that's just a big black box (cloud)
klaas-··on Ask HN: Anyone else having bitflips in Azure Network traffic?
yeah, that's what we did. We captured it at the last place in our network (a router) and then compared the tcp payloads to the packets that we received in azure in our firewall. Next step was to get the dumps from as much inbetween as possible, it seems that is only the edge router of Azure and our express route gateway. After looking at the pcap of the azure edge myself I verified that the package is still okay there, the MS support verified it's broken in the express route gateway, so it has to be flipped somewhere inside their Azure Germany network stack. They are still searching where ... :)
klaas-··on Ask HN: Anyone else having bitflips in Azure Network traffic?
So it seems this is their software defined network, the packets still look good when entering via the microsoft edge routers and they get bitflips on their way into our express route
klaas-··on Show HN: Send Emails from Your Terminal
you can also send mails with curl via cli https://everything.curl.dev/usingcurl/smtp
klaas-··on Posix Compatibility Comparison: GCP Filestore, Amazon EFS, and Azure Files
yeah I forgot there is Azure NetApp Files as well, Azure has at least 3 NFS implementations :) But no I was talking about Azure Files NFS https://learn.microsoft.com/en-us/azure/storage/files/files-...
klaas-··on Posix Compatibility Comparison: GCP Filestore, Amazon EFS, and Azure Files
one more thing, there are two NFS implementations, one v3 and one v4; the v3 is on top of blobs, the v4 one is on top of azure files. we use the v4 one, never tried the blob one :)
klaas-··on Posix Compatibility Comparison: GCP Filestore, Amazon EFS, and Azure Files
From your article "For example, Azure Files files and folders have default permissions of 0777, with root as owner, and it does not support modification" that sounds like cifs, I can't tell you much about Azure Files NFS but I do know they support basic file rights and setting of uid/gid, my company uses them in Azure for SAP.
klaas-··on Posix Compatibility Comparison: GCP Filestore, Amazon EFS, and Azure Files
it looks like they are comparing the cifs/samba Azure Files (https://learn.microsoft.com/en-us/azure/storage/files/files-...) service instead of the nfs (files - https://learn.microsoft.com/en-us/azure/storage/files/files-...) / sftp (blob - https://learn.microsoft.com/en-us/azure/storage/blobs/secure...) services which offer more posix compliance
klaas-··on The new and upgraded Framework Laptop
Any news about lvfs support from framework?
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