Category 631
Discussion List
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OCI: Yum Reports Error "Could not resolve host: yum$ociregion.$ocidomain; Unknown error"When trying to install packages on an Oracle Cloud Instance running a custom Oracle Linux image, yum fails with the following error: # yum -y install net-snmp Loaded plu… -
SSH Fails With Error: "FIPS mode initialized FIPS mode initialized ssh: connect to host <host name>SSH connections to an Oracle Linux 7 or higher fail, with the following errors logged to /var/log/secure: Oct 28 09:44:40 sshd: FIPS mode initialized Oct 28 09:44:40 s…
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Postfix Mail Server "/var/spool/postfix/maildrop" Mail Queue Fills /var on Linux InstanceA Linux instance is running the Postfix mail server. The /var/ filesystem on the server has filled to 100% utilization, and further checking subdirectories in /var shows…
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OCI: UFW Was Enabled on Ubuntu and SSH Connections Started to Fail With Connection Refused ErrorAn Ubuntu Instance started to experience "Connection Refused" errors when trying to log in to the server using ssh. This issue only started to occur after the Uncomplica…
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OSMS: How to Add a 3rd Party Repository When OSMS is UsedIt is possible to use a 3rd party repository while using OSMS. To do so, add the 3rd party repository file name to the "ignored_repos.conf" file in OSMS. The following e…
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OCI: Linux User Account Incorrectly Set to "nologin"A local user account on a Linux instance was configured to use the nologin shell in error, as the user account needs to be able to log in to the Linux instance. Attempti…
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Unable to Remove LVM Snapshot - “Logical volume XYZ contains a filesystem in use."Attempting to remove an LVM snapshot on a linux instance fails with the following error: # lvremove /dev/VGExaDb/LVDbVar1Snap Logical volume VGExaDb/LVDbVar1Snap contain…
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OCI: Oracle Linux [UEK-5] Panicks With: "BUG: Bad page state in process lvm pfn:cbea9d1"Applies To: Oracle Linux - Version 7 or later with UEK5 Symptoms: UEK5 can suffer from memory corruption panic. [229802.917409] loop: module loaded [229803.641151] BUG: …
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System crash with: NMI received for unknown reason XX on CPU YApplies to: Oracle Linux - Version 7 and later Symptoms System crashed Crash report: [ 5629.913381] Uhhuh. NMI received for unknown reason 10 on CPU 5. [ 5629.913382] Do…
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OCI: aide(1) is Failing with FIPSR ErrorApplies To: Linux OS – Version Oracle Linux 7.0 to Oracle Linux 9.0 [Release OL7 to OL9] Linux x86_64 on Oracle Public Cloud Symptoms: AIDE is an intrusion detection uti…Alejandro Rodriguez L.-Oracle 63 views 0 comments 0 points Started by Alejandro Rodriguez L.-Oracle Linux -
“du” Reports Less Space Utilization than “df”Applies to: Oracle Cloud Infrastructure Linux x86-64 Symptoms: The du (/usr/bin/du) and df (/bin/df) commands output display different storage space utilization values: …
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Filesystem on iSCSI Volume is Not Mounted During BootApplies To: Oracle Linux - Version 8 and later Symptoms: Some filesystems randomly fail to be mounted during boot. The filesystems belong to iSCSI block volumes. Log can…
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Security Related Posts on Oracle Linux BlogKsplice Known Exploit Detection for DirtyPipe, Cgroup, fsconfig and more Learn how Oracle Ksplice helps secure critical Linux user space libraries Oracle Linux 9 Update … -
Oracle Linux Automation Manager Related Posts on Oracle Linux BlogAutomating STIG remediation using Oracle Linux Automation Manager Oracle Linux Automation Manager 2.0 Hands-on Labs on Oracle Help Center Learn Reduce configuration drif…
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Networking Related Posts on Oracle Linux BlogNetwork Interface transmission queue timeout, cause and recovery methods Linux on Oracle Cloud Infrastructure: Networking your cloud made easy with short training videos…
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Migration Related Posts on Oracle Linux BlogUpdate CentOS Linux for free Still on CentOS Linux 7? Easily switch to Oracle Linux, a stable RHEL-compatible alternative Surprising reasons why CentOS users feeling str…
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Memory Management Related Posts on Oracle Linux BlogLinux SLUB Allocator Internals and Debugging, Part 1 of 4 Linux SLUB Allocator Internals and Debugging- SLUB Debugger, Part 2 of 4 Linux SLUB Allocator Internals and Deb…
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KVM Related Posts on Oracle Linux BlogA case study of QEMU and AddressSanitizer Improved performance for your Microsoft Windows workloads in Oracle Linux KVM Software-Only Setup to Diagnose QEMU SCSI Passthr…
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Data Storage Related Posts on Oracle Linux BlogMeasuring NVMe Latency Oracle Linux 8: Disk Management made easy with short training videos How long does your IO take ? NVMe over TCP An Introduction to the io_uring As…
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System Performance Related Posts on Oracle Linux BlogSyscall latency... and some uses of speculative execution Tune it Up: Improving Redis Performance for Ampere A1 on Oracle Linux in OCI Keep an eye on these versions – Co…
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Oracle Cloud Infrastructure Related Posts on Oracle Linux BlogIntroducing OCIFS Generating a vmcore in OCI Creating an SSH Key Pair on the Linux Command Line for OCI Access Cloud Native Patterns: a free ebook for developers Linux o…
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Multi-threading Related Posts on Oracle Linux BlogUnbinding Parallel Jobs in Padata Multithreaded Struct Page Initialization
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Kernel Related Posts on Oracle Linux BlogThe Machine Keyring Using Intel Advanced Matrix Extensions with Oracle Linux NFSv4 Courteous Server irqbalance: design and internals Using the Maple Tree to expand NR_IR…
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Oracle Linux Learning HUBWelcome to Oracle Linux Learning HUB This thread provides you with information to help you grow your skillset using Oracle Linux. In this thread we have organized Oracle…
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Ksplice Related Posts on Oracle Linux BlogReverse Engineering UndefinedBehaviorSanitizer (UBSan) Ksplice Known Exploit Detection for DirtyPipe, Cgroup, fsconfig and more Learn how Oracle Ksplice helps secure cri…
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Hardware Architecture Related Posts on Oracle Linux BlogA study of the Linux kernel PCI subsystem with QEMU AMD Oracle Linux debuts on 4th Gen AMD EPYC processor Continued collaboration with AMD brings powerful solutions to c…
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Diagnostics Related Posts on Oracle Linux BlogEnter the drgn gprofng: The Next Generation GNU Profiling Tool Linux SLUB Allocator Internals and Debugging - KFENCE, Part 4 of 4 Linux SLUB Allocator Internals and Debu…
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Software Development Related Posts on Oracle Linux BlogBackporting patches using git Three free Ebooks for cloud-native developers Improving Application Security with UndefinedBehaviorSanitizer (UBSan) and GCC BPF: Applicati…
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Database Related Posts on Oracle Linux BlogWhy Oracle Database runs best on Oracle Linux Oracle Database Templates for Oracle Linux KVM now available! Connect from an Arm-based A1 Compute Shape to Autonomous Data…
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Boot-up Related Posts On Oracle Linux BlogVirtual Machine Secure Boot Database Updates Made Easy with Oracle Linux Working with UEFI Secure Boot on Oracle Linux Changing the default kernel in Oracle Linux | It's…