Questions tagged [linux]
Linux is the generic term for a UNIX-like open source operating system based on the Linux kernel.
38,939 questions
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cephadm can not fetch the release.gpg when adding a repository
When I try to set up tentacle repository with cephadm I become an error:
root@ceph01:~# cephadm add-repo --release tentacle
Installing repo GPG key from https://download.ceph.com/keys/release.gpg...
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HDFS NFS Gateway configuration help needed
We have a requirement to access Apache Ranger audit data from a non-HDFS host. Our ranger setup uses elastic for the live data and this is archived to HDFS on the same cluster. The non-HDFS node is ...
- 89 reputation score 89
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HPE Smart Array P420i locks SAS drive in Failed (Write protected) state: Cannot reenable or erase online due to configured block
I have an HPE ProLiant DL360p Gen8 with the Smart Array P420i (Firmware 8.32, chip PMC-Sierra).
OS: Ubuntu Server 24.04 LTS (Kernel 6.8.0-134-generic, driver hpsa)
Target Drive: 1.2TB 10.5K SAS HDD (...
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Am unable to connect to 5 out of 10 HDFS datanode UI
I have 10 HDFS datanodes
hdfs-w[01-04],[06-08]
hdfs-hadoop[01-03]
and 3 namenodes
master[01-03]
Kerberos is being utilised.
From my windows laptop I use the kerberos windows client to get a ticket ...
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Linux nft firewall: overlapping set elements
I have a question regarding overlapping elements in nft firewall sets. Let's have a set:
table ip filter {
set iponly {
type iface_index . ipv4_addr
flags ...
- 63 reputation score 63
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prerequisites for working at a data center
My apologies if this isn't the right forum. I have a friend who has been out of the labor force for more than ten years caring for a family member. Although he's never worked in IT, he's intensely ...
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NFSv4: How to ensure group write permissions on new files and directories with a squashed group?
I am running a Debian server using NFSv4 (only v4). The only expected clients are on Linux as well. I am primarilly accessing the fileserver by mounting it in fstab and using a file explorer.
My ...
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Software RAID-1 using NVMe drives on multi-socket system: split the drives or share a CPU?
I'm getting ready to put together a new server with bcache (Linux) to speed up a SAS RAID-5 array. I'll be using cheap NVMe drives as the cache media, with an LSI controller hosting some large ...
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Loopback testing of NVME target created using fcloop using SPDK without physical hardware support
I want to test NVME over fibre channel.
I setup nvme_fcloop, nvmet_fc, and nvme_fc.
How can I discover, connect and test NVME target over fibre channel using Storage Performance Development Kit (SPDK),...
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How to truncate a zipped file?
I have very large log files and I often truncate them with:
truncate -s 20M filename.log
However, I also have some files that have been zipped and they are smaller, but I want to shrink them further ...
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Postfix trying to deliver mail using old MX entries
We switched some of our company mailboxes (one domain) to Outlook servers.
After that our emails are requiring up to 30 minutes to be delivered from our server to Outlook.
Checked logs and there is ...
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Minimizing CPU Process Scheduling Latency in Linux for Light Workloads?
I'm having an issue on a linux system where I have 8 CPUs, and on average I only use about 15% overall CPU usage, but, the processes that are running need to have the absolute minimum latency possible....
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Map uid/gid of mount to specific uid/gid in kubernetes
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 ...
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Delete Fails when Windows NFS mounted on Linux vm
I have a windows NFS setup with AD and on mounting it in linux vm. I’m able to create and edit the files but not able to delete the files. The user seems to be correctly mapped but delete fails.
I ...
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Apache redirect all ports from subdomain to back end server
I have multiple servers with different services. I have Apache on a publicly accessible server, pointing different subdomains to different servers (*.example.com, *.serv1.example.com, *.serv2.example....
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