Linux
Discussion List
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Oracle Linux : How to Install 'Server With GUI' Packages on Servers not Connected to InternetApplies To: Linux OS - Version Oracle Linux 7 and later Goal: This document explains steps to install Server With GUI packages on servers that are not connected to the i… -
OSMH – OSMH Plugin Enable fails with Error "plugin oci-osmh waits when plugin osms is enabled"Applies to: Oracle Cloud Infrastructure Linux x86-64 Symptoms: Unable to enable osmh plugin fails with error "plugin oci-osmh waits when plugin osms is enabled" Cause: I…
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Oracle Linux: How to Check the Interface Pause Parameters Using "ethtool"Applies To Linux OS - Version Oracle Linux 7.0 and later Summary This post is intended to guide on how to review the pause parameters. Solution Pause parameters are the …
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OCI: How to upgrade Kernel from UEK6 to UEK7 on OSMH managed instance after leaap upgradeAPPLIES TO: Oracle Cloud Infrastructure OS Management Hub (OSMH) SYMPTOMS After leapp Upgrade from Oracle Linux 7 to Oracle Linux 8 the Running Kernel remains UEK6, Ther…
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OL: top/mpstat command may show steal time on some cpus during heavy network trafficApplies to: Linux OS - Version Oracle Linux 8.0 and later Symptoms: Top or mpstat may show steal time on some cpus during heavy network traffic %Cpu11 : 14.6 us, 52.5 sy…
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OCI: Resolving "ksplice: error: argument subsys: invalid choice: 'xen'"Applies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms: After upgrading ksplice, the cron job fails with the following error: export PATH=…
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Oracle Linux: Sosreport Command Shows Error "binary is deprecated"Applies To Linux OS - Version Oracle Linux 8.0 and later Symptoms The sosreport command shows the error below when run on systems with sos version 4.9 and above. # sosre…
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Oracle Linux: Paravirtualized Block Volume Not Mounting After OCI Instance RestartAPPLIES TO: Linux OS–Version Oracle Linux 7.0 to Oracle Linux 9.0 [Release OL7 to OL9] Oracle Cloud Infrastructure SYMPTOMS: After a full OS reboot, the filesystem is no…
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OCI: System Fails to Boot with Error “Failed to load SELinux policy, freezing”Applies To: Oracle Cloud Infrastructure Linux x86-64 Symptoms: When booting the system with selinux enabled, the process fails and freezes with following messages [ 12.5…
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OSMH: Management Station Software Source Sync Job FailedApplies To: OS Management Hub Oracle Cloud Infrastructure Goal: OS Management Hub Management Station Sync Job for Software Source Failed with error message below: 2025/0…
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OCI: How To Audit User Activities in sudo su – sessionAPPLIES TO Oracle Cloud Infrastructure - Version N/A and later Information in this document applies to any platform. GOAL This document describes how to record command l…
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Oracle Linux: SSH Connection Failure Due to Missing /var/empty/sshd DirectoryApplies To: Oracle Cloud Infrastructure Linux x86-64 Symptoms: Attempts to establish an ssh connection to the instance fail with the following error :ssh_exchange_identi…
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OCI: NFS Mount Point Shows Ownership as "nobody"Applies To: Oracle Linux Cloud Service - Version Oracle Linux 7.0 and later Oracle Cloud Infrastructure Symptoms: NFS mount point shows the below ownership. $ ls -ld /dr…
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OCI: Oracle Linux Instance Fails to Boot with "Warning: /dev/mapper/ocivolume-root does not exist"APPLIES TO Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 SYMPTOMS Oracle Linux 8 Instance fails to boot with error below and dracut shell shows up: [ …
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Oracle Linux: chroot: failed to run command ‘/bin/bash’: Exec format errorAPPLIES TO: Linux OS - Version Oracle Linux 7.0 and later Linux x86-64 SYMPTOMS When attempting to run chroot /mnt on the debug instance resulted in the following error.…
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Oracle Linux - Remove debris from /var/cache/uptrack directoryAPPLIES TO: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 GOAL: This document explains how clean the Ksplice cache directory, the UEK kernel is instal…
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Oracle Linux: Unable to Rename VG with Error “Device /dev/sdb3 has active LVs, deactivate first"APPLIES TO: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 GOAL: This document is intended to explain why the error “Device /dev/sdb3 has active LVs, d…
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OCI: Application error: "invalid SSH version: OpenSSH version must be greater or equal to <number>"Applies To: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux x86-64 Symptoms: While executing a 3rd party application in a Oracle Linux 9 instance in OCI…
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Oracle Linux: SSHD Service Failed Start With Error "sshd[ ]: OpenSSL version mismatch."APPLIES TO Oracle Cloud Infrastructure Oracle Linux SYMPTOMS The SSH service cannot come up with below error. --$ journalctl -xeu sshd.service sshd[37600]: OpenSSL versi…
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Oracle Linux – OSMH Update Fails due to OL7 Package Dependency ConflictAPPLIES TO: Oracle Cloud Infrastructure OS Management Hub (OSMH) SYMPTOMS: OSMH update job fails with the following error: exit status 1: Error: transaction check vs dep…
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Oracle Linux - How to Allow new users or existing user login via SSHApplies to: Oracle Linux 7 to Oracle Linux 9 Linux x86_64 on Oracle Public Cloud Goal: This document is intended to provide steps to allow new users or existing users(be…
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Oracle Linux: How To Change Default Module StreamApplies to: Oracle Cloud Infrastructure Oracle Linux 8 and Later Goal: This document explains steps to change default module stream. Solution: By default, the dnf utilit…
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OCI: How to Configure Static Routes at Boot Time in Oracle LinuxAPPLIES TO Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 GOAL This document describes how to configure static routes at boot time in Oracle Linux. SOL…
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OCI: Oracle Linux Instances Can Observe High Usage Inside /var/tmpApplies To: Linux x86-64 Oracle Cloud Infrastructure Symptoms: Frequently, on Oracle Linux instance, the /var/tmp directory can be seen as taking up a lot of space. Caus…
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Oracle Linux - Cannot find Ksplice Uptrack information for your kernel versionAPPLIES TO: • Oracle Linux running UEK kernel • Systems using Ksplice and managed by OSMH SYMPTOMS: Ksplice fails with the following error during patching or OSMH job: e…
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OCI: OL7 Leapp Preupgrade Shows Error “Inhibitor (High) for BTRFS RAID detected” in the LogfileAPPLIES TO: Oracle Cloud Infrastructure Linux x86-64 SYMPTOMS While performing the pre-upgrade check for an OL7 instance before upgrading to OL8 via leapp, the following…
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OCI: Resizing the EXT filesystem fails with “resize2fs: Permission denied to resize filesystem"Applies To: Oracle Linux Cloud Service - Version Oracle Linux 6.0 and later Oracle Cloud Infrastructure Information in this document applies to any platform. Symptoms: R…
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OSMH – Reboot needed flag doesn’t show yes after the patching on OSMH instancesAPPLIES TO Oracle Cloud Infrastructure Linux x86-64 SYMPTOMS The customer applied patches (yum/dnf update) via OSMH. But reboot needed flag doesn’t show ‘yes’ CAUSE OSMH…
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OCI: Unable to Remove Python2 Packages After Upgrading from OL7 to OL8Applies To: Oracle Cloud Infrastructure Oracle Linux 8 Symptoms: Attempting to remove python2 rpm using DNF results in a dependency error: #sudo dnf remove python2 Error…
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OCI: Memory discrepancy for the Linux Instance between OCI console and the ‘free’ OutputApplies To: Oracle Cloud Infrastructure Oracle Linux Symptoms Below are the instance details on the OCI Console: "Shape":"VM.Standard.E2.1.Micro", "OCPUs":1,"Memory (MB)…