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Common Server issues – FAQs and answers from those in the know

How to identify the cause of persistent AdSense Ad Serving Limits on a real-time utility site?

22 April 2026 @ 3:07 pm

I am the owner of a real-time utility website, spectrumoutage.org, which tracks internet service outages. I am currently facing a persistent "Ad Serving Limit" from Google AdSense due to "Invalid Traffic" concerns, and I am looking for help analyzing what on the site might be triggering this. The Situation: The site provides live updates on ISP outages. Because of the nature of the content, users tend to refresh the pages frequently to see if their service has been restored. What I've Checked: Traffic Sources: According to my analytics, the majority of traffic is organic search or direct. I am not using any paid traffic or bots. Ad Placement: I am using standard AdSense Auto-Ads. Content: The content is utility-driven and unique to regional outages. My Questions for the Community: Could the high frequency of user refr

Windows active directory "Domain Controllers" OU applying invisible policies

22 April 2026 @ 12:45 pm

I am currently going somewhat crazy debugging an issue regarding my OU and the way GPO's are applied. I have noticed, that there are invisible undocumented rules being applied to any servers within this built in OU "Domain Controllers". Servers behave differently when they are in that OU as oppose to a different one even when the applied gpo are identical. (i turn off inheritance and link the same ones to both OU). The output of gpresult confirms that the policies are the same. I obviously do not want to have to put non dc servers into my dc OU. The only reference or documentation i can find to this issue is this https://community.spiceworks.com/t/whats-special-about-the-domain-controllers-ou/930162 which is sadly not very helpful and points to a dead link for an article that explains further. Any information you

LACP vs ACTIVE_BACKUP

22 April 2026 @ 7:59 am

If LACP declaration (server side) will still send traffic when one of the NICs fails, is there any advantage to declaring a bond as one primary one slave? Other than having the backup on a financially cheaper route I cannot see any positive to it. Is there any valid technical argument in favour? I am trying to steer our automation toward LACP as a install default rather than active_backup as it is now.

Map uid/gid of mount to specific uid/gid in kubernetes

22 April 2026 @ 7:01 am

Kubernetes supports user namespaces, and apparently supports id-mapped mounts. Tools like podman allow for using id-mapped mounts via the idmap option to --mount, but there doesn't appear to be anything in the kubernetes docs about how to use id-mapped mounts. What are the options that are required to be set in the PV/PVC/Pod config for performing an id-mapped mount?

Network Bond connections fail when primary is reselected

22 April 2026 @ 4:36 am

I have an active-backup Linux network bond with the following setup. # bond0 modprobe bonding # add_master ip link add dev bond0 type bond # setup_master ip link set dev bond0 type bond mode active-backup miimon 100 ip link set dev bond0 type bond primary_reselect failure # enslave_slaves ip link set dev wlan0 master bond0 ip link set dev wlan1 master bond0 ip link set dev bond0 type bond primary wlan1 The wlan0 interface is connected to a Linux AP device which is bridged over ethernet to a consumer router. The wlan1 interface is directly connected to the same consumer router. Then the following occurs: Primary goes down Backup becomes active Primary recovers and becomes active again The following then happens: The Linux device connected on the other end ofwlan0 CAN ssh into it and make any connections. However, on ALL other

Azure OpenAI creation fails with RequestDisallowedByAzure on Azure for Students subscription: which regions are allowed?

21 April 2026 @ 8:30 pm

I'm trying to create an Azure OpenAI resource on an Azure for Students subscription and validation fails at the Review + submit step with: Resource 'LongLaMP-student' was disallowed by Azure: This policy maintains a set of best available regions where your subscription can deploy resources. The objective of this policy is to ensure that your subscription has full access to Azure services with optimal performance. Should you need additional or different regions, contact support. (Code: RequestDisallowedByAzure, Target: LongLaMP-student) Deployment parameters: Subscription: Azure for Students Resource group: LongLaMP-student (created successfully in the same subscription) Region: East US 2 Name: LongLaMP-student Pricing tier: Standard S0 Network: All networks

ceph-osd: error creating empty object store in /var/lib/ceph/osd/ceph-2/: (13) Permission denied. Why?

21 April 2026 @ 5:17 pm

This error seems to also occur on other users' clusters, but I haven't found a working remedy for it so far: On my Ceph cluster (4 nodes; Ceph 19.2.3 Squid (stable) on Ubuntu 24.04.4 LTS (aarch64)), I've managed to add all hosts: mixtile@blade3n1:~$ sudo ceph orch host ls HOST ADDR LABELS STATUS blade3n1 10.20.0.11 _admin blade3n2 10.20.0.12 blade3n3 10.20.0.13 blade3n4 10.20.0.14 4 hosts in cluster …but trying to create the necessary OSDs by using ceph orch apply osd --all-available-devices leaves me with such an error message in the cephadm log: 2026-04-21 18:50:52,523 ffffbe34e720 INFO /usr/bin/docker: stderr Running command: /usr/bin/ceph-osd --cluster ceph --osd-objectstore bluestore --mkfs -i 2 --monmap /var/lib/ceph/osd/ceph-2/activate.monmap --keyfile - --osdspec-affinity all-available-devices --osd-data /var/lib/ceph/osd/ceph-2/ --osd-uuid 3ad68f34-9ca7-4430-9870-0f563c64f631 --setu

Ceph ignores node exporters on three nodes. Stray daemons?

21 April 2026 @ 12:46 pm

I'm preparing a 4-node Ceph cluster, but creating OSDs by using ceph orch apply osd --all-available-devices fails all the time: mixtile@blade3n1:~$ sudo ceph osd tree ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF -1 0 root default 1 0 osd.1 down 0 1.00000 mixtile@blade3n1:~$ sudo ceph -s cluster: id: 8aad3073-39a1-11f1-bf6e-f2704a1efa9b health: HEALTH_WARN 1 MDSs report slow metadata IOs Reduced data availability: 2 pgs inactive OSD count 1 < osd_pool_default_size 3 services: mon: 4 daemons, quorum blade3n1,blade3n2,blade3n3,blade3n4 (age 73m) mgr: blade3n2.cnqdje(active, since 73m), standbys: blade3n1.rrlwwv mds: 1/1 daemons up, 1 standby osd: 1 osds: 0 up, 0 in (since 81s) data: volumes: 1/1 healthy pools: 2 pools, 2 pgs objects: 0 object

Power latch circuit for Lenovo Thinkserver RD650 [closed]

21 April 2026 @ 12:33 pm

Any suggestions on where I might find a power-latch circuit for a Lenovo Thinkserver RD650 which will not power on in the UK? LED's are on fine and power is getting to the motherboard as I can connect to it via TSM but won't boot either from the power switch or from TSM.

Openvpn config.json structure

21 April 2026 @ 11:28 am

Where can I find documentation for Openvpn's new combined config/state/log file? For a number of years we have been using OpenVPN with the simple key-value pair config files with a .ovpn file extension. An added complication is that we use (short TTL) client certificates as part of the authentication. Automating the certificate refresh is trivial - we just need to update the file referenced in the configuration. However in the most recent MS-Windows version, this is replaced by a JSON file at %APPDATA%\OpenVPN Connect\config.json which appears to combine state and log data along with the CA AND client certificates. The data itself is stored within a JSON encoded string inside the JSON encoded file with added backslashes for good measure. There also seems to be some XML fragments in there too. Since the certificates and keys are embedded in this file, it apparently needs to be regenerated when the client certificate is to be updated. While it is poss