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Linux
Discussion List
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Oracle Linux: How to Downgrade Multiple RPM Packages to Match a Good Known SystemApplies to: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux 8 and later Goal: This document explains steps to downgrade multiple RPM Packages to match a…Alejandro Rodriguez L.-Oracle 51 views 0 comments 0 points Most recent by Alejandro Rodriguez L.-Oracle -
After Adding a New GRUB_CMDLINE_LINUX to /etc/default/grub System Is Not Booting as ExpectedApplies To: Oracle Linux 7 and Later Symptoms: A new GRUB_CMDLINE_LINUX line was added to enable "audit=1", in /etc/default/grub After that, the boot change and the netw… -
Oracle Linux: How To Setup a OCFS2 on LVM in a Corosync/Pacemaker clusterApplies To: Oracle Linux 8 Oracle Cloud Infrastructure Goal: This Document will describe how to set up a clustered filesystem accessible simultaneously on both nodes usi…
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Oracle Linux: Active Directory User Fails to Login with Error "Permission Denied"Applies to: Oracle Linux Symptoms: While trying to login as an Active Directory user, the user is unable to login and receives a "Permission Denied" message. /var/log/se…
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Oracle Linux – Using GNU Parallel command to improve backup(s) to an NFS ServerAPPLIES TO Oracle Cloud Infrastructure - Version N/A and later Oracle Linux 7/8/9 GOAL Improve network throughput and reduce times to backup important data/information t…Alejandro Rodriguez L.-Oracle 43 views 0 comments 0 points Most recent by Alejandro Rodriguez L.-Oracle
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Oracle Linux: "adcli: couldn't connect to <realm> domain: Failed to create kerberos context:"Applies to: Linux OS - Version Oracle Linux 7.0 and later Symptoms: Joining a Microsoft Active Directory domain fails: # adcli -v join -U * Using domain name: * Calcu…
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Oracle Linux: How to Create New systemd TimersApplies To: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux 7/8/9 Goal: This article is to document how to create new systemd timers, a systemd way of r…Alejandro Rodriguez L.-Oracle 40 views 0 comments 0 points Most recent by Alejandro Rodriguez L.-Oracle
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Oracle Linux: Using _netdev In Local Filesystem Can Cause Systemd Dependencies ProblemsApplies To: Oracle Linux 8 Symptoms: If “_netdev” is specified as an option on /etc/fstab for a local (non-network mounted) filesystem in /etc/fstab, it can cause system…
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Oracle Linux: How to Use the Options disp_qos and dispatcher in /etc/audit/auditd.confApplies To Linux OS - Version Oracle Linux 7.0 to Oracle Linux 9.0 [Release OL7 to OL9] Summary To understand the usage of the options disp_qos and dispatcher in /etc/au…
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Oracle Linux: Understanding "installonly_limit" Parameter Used with YUM/DNFApplies To Linux OS - Version Oracle Linux 7.0 and later Summary This document is intended to provide understanding on the use of the parameter "installonly_limit" in /e…
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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 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…
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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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OSMH: OSMH Managed Instance Update Fails with Error “Requires: ksplice-helper"Applies To: Oracle Cloud Infrastructure OS Management Hub (OSMH) Symptoms: OSMH managed instance package updates fails with below error. Error: Package: 2:glibc-2.17-326…
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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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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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OSMH: How To Enable The OSMH Plugin Using OCI CLIApplies To: Oracle Cloud Infrastructure OS Management Hub (OSMH) Goal: How to enable the OSMH Plugin using OCI CLI. This is useful when a user cannot enable the OSMH Plu…
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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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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 - 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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create mount pointSummary: Content (please ensure you mask any confidential information): Version (include the version you are using, if applicable): Code Snippet (add any code snippets t…
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OSMH: Windows Instance Showing "there is no updates available" In OSMH ConsoleApplies To: Oracle Cloud Infrastructure OS Management Hub (OSMH) Goal On the OSMH console, it shows "there is no updates available" But from the Windows Update in OS sid…
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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…