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Linux
Discussion List
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OSMH: Instance Configuration Failed With Error “Invalid Managed Instance archType”Applies To: OS Management Hub (OSMH) Oracle Cloud Infrastructure Symptoms OSMH Instance registration failed with error: ERROR: failed to update managed instance: Error r…
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OCI: Latest Installed Kernel Fails to BootApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms Instance fails to boot after updating to the latest UEKR7 kernel. The console log s…
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OCI: /var/log/messages log messages generates only a single line ,no new lineApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms: OCI Linux instance (OL8) /var/log/messages log messages generates only a single li…
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OCI - How to Change UUID of NetworkManager Connection ProfileApplies To: Oracle Cloud Infrastructure Oracle Linux Goal There is a need to change the UUID of a NetworkManager connection profile. SOLUTION It is possible to generate …
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OCI: Autonomous Linux Patching Fails due to conflicts with Firefox PackageApplies to: Linux OS - Version Oracle Linux 7.9 and later Linux x86-64 Symptoms: Autonomous Linux patching fails with following error file /usr/bin/firefox from install …
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How to Test Port[TCP/UDP] Connectivity from a Linux ServerApplies To: Oracle Cloud Infrastructure Oracle Linux Goal Procedure to check port [TCP/UDP] connectivity from a Linux server Solution Telnet and nc are common tools used…
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OSMH: How To Add Oracle Linux 7 Extended Linux Support Software Sources in OSMHApplies to: Oracle Cloud Infrastructure OS Management Hub (OSMH) Goal This document explains how to subscribe Oracle Linux Extended Support yum channels on Oracle Linux …
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OL8: SSH User Session and Process Killed “systemd-logind: Session of user <user> is idle, stopping"Applies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms On Oracle Linux 8, SSH sessions of users and their processes are killed automatical…
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e2fsck complains that either super block or partition table is corrupt.Applies To: Oracle Cloud Infrastructure Oracle Linux Symptoms: While doing a file system check using 'e2fsck', it complains as follows : bash-3.2# e2fsck /dev/mapper/vg_…
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Message "audit: kauditd hold queue overflow" is reported during boot”Applies To: Oracle Cloud Infrastructure Oracle Linux Symptoms: The following message appears during boot while using the boot parameter audit=1:[ 5.563805] audit: kaudit…
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OSMH Custom Software Source Creation Fails with no Error on Console “Invalid parameter packages"Applies To: Oracle Cloud Infrastructure Information in this document applies to any platform. Symptoms Creation of OSMH custom software source (CSS) or versioned custom …
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A quick way to add additional RSA public keys for authenticationAPPLIES TO: Linux OS - Oracle Linux 7, Oracle Linux 8 and Oracle Linux 9. Oracle Cloud Infrastructure and on premises. Linux x86-64 GOAL: Add additional RSA public keys …
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Pip install fails after upgrade from OL7 to OL8APPLIES TO: Linux OS – Version Oracle Linux 8 Linux x86_64 on Oracle Public Cloud, on-premises SYMPTOMS: Pip install fails with: pip install pycrypto==Traceback (most re…
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OCI: Extend Root Filesystem In Rocky LinuxApplies To: Oracle Cloud Infrastructure Rocky Linux x86_64 Goal: Extend the boot volume and partition for Rocky Linux to 100GB Current size 50GB: # df -h Filesystem Size…
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OCI: How To Run a Filesystem Check On A Boot VolumeAPPLIES TO Linux OS – Version Oracle Linux 8 and Oracle Linux 9 Linux x86_64 on Oracle Public Cloud GOAL Run a file system check on another OCI Linux server’s boot volum…
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Useradd and usermod fail to flush the sssd cache with DB version too old for domain implicit_filesApplies to: Linux OS - Version Oracle Linux 7.0 and later Linux x86-64 Symptoms After sssd upgrade, useradd and usermod fail to flush the sssd cache with "DB version too…
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OCI - How to Avoid the Prelogin Messages on SSH Session: ssh opc@x.x.x.x “\S Kernel \r on an \m"APPLIES TO: Oracle Cloud Infrastructure Oracle Linux x86_64 SYMPTOMS: When using ssh to log in to a server, the following messages are showing before password prompt. lo…
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OCI: How To Install Tomcat on Oracle LinuxApplies to: Oracle Cloud Infrastructure – Linux OS - Version Oracle Linux 7.0 and later Goal Steps for installing Tomcat and Apache on Oracle Linux Solution For Oracle C…
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Yum OPENSSH Package Upgrade Fails with Error“unpacking of archive failed on file”Applies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms Unable to update openssh-client & openssh-server packages and it reports error “unp…
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How to Configure setroubleshoot to Receive e-mail Reports for SELinux AVC DenialsApplies To: Oracle Cloud Infrastructure Linux OS Goal How to configure setroubleshoot to receive e-mail reports for SELinux AVC denials. Solution What is setroubleshoot?…
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OCI : Docker Service Failing To Start After Leapp Upgrade from OL7 to OL8Applies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms Docker service Start Failing with below error [root@xxxx ~]# systemctl status docke…
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OCI: Is it Possible to Perform Oracle Linux Leapp Upgrade to a Specific Minor VersionApplies To: OracleCloud Infrastructure - Version N/A and later Linux x86-64 Question Is it possible to perform a Leapp upgrade to a specific minor version, i.e. OL7.9 to…
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OCI: Instance Stuck at Boot Showing TianoCore LogoApplies To: Oracle Cloud Infrastructure - Version N/A and later All Platforms Symptoms: Instance is unreachable and rebooting it does not restore access. Instance detail…
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OCI – How To Open Network Ports in UbuntuApplies to: Oracle Cloud Infrastructure Linux x86-64 Goal: In OCI Ubuntu instances (image Ubuntu-22.04) opening anetwork port in UFW don’t work. Solution: Note: Ubuntu i…
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OCI – Error Updating Package tuned-profiles-oci-2.22.1-4.0.1.el8_10Applies to: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux 8 Symptoms While performing a dnf update, the following error occurs: Error: Problem: packag…
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How to Determine Which User or Process is Mounting or Unmounting Devices Using auditdApplies To: Oracle Cloud Infrastructure Oracle Linux OS Question How to determine which user or process is mounting or unmounting devices using the auditd service? Solut…
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Oracle Linux: How to Update the glibc Package on Oracle Linux 8Applies To: Oracle Cloud Infrastructure Oracle Linux 8 Goal: Ensure the glibc package is updated correctly on Oracle Linux 8. Solution: 1. Enable Required Repositories T…
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OCI : Network Service Fails To Start with Error "No such file or directory" and "command not found"Applies to: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux x86-64 Goal To start the network service successfully without failure Symptoms Below error i…
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OSMH: Failed to Update tuned-profiles-oci Packages in OCIApplies to: Oracle Cloud Infrastructure Oracle Linux 7 or 8 OS Management Hub Symptoms When updating packages in Oracle Linux using OSMH, the following error is seen: pa…
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OSMH-On-premise Client Fails to Register With Management StationApplies To: Oracle Cloud Infrastructure Oracle Linux Symptoms: On-premise OSMH Client registration fails with Management Station and below errors in osmh-agent.log: $ gr…
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OSMH: The Jobs Failing With [Errno 14] HTTPS Error 404 - Not Found Trying Other Mirror.APPLIES TO Oracle Cloud Infrastructure Oracle Linux OSMH SYMPTOMS While migrating from OSMS to OSMH, the jobs are failing with below error. $ yum repolist Loaded plugins…
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OCI: Yum Update fails due to Incorrect Plugin ConfigurationApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms: Unable to perform yum update due to legacy configurations in place. $ sudo yum upd…
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osmhSummary: 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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OCI: Unable To Update kernel-uekApplies to: Oracle Cloud Infrastructure Linux x86-64 Symptoms Performing command to update only kernel-uek does not do anything $ sudo yum update kernel-uek Dependencies…
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OSMH: High CPU usage for Windows osmh ProcessApplies to: Oracle Cloud Infrastructure - Version N/A and later Windows 2016 and Above Symptoms There is a high CPU load on the OSMH managed instance. The top 10 CPU hog…
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OCI : YUM Command Fails with Error “No module named sqlitecachec”Applies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms The below error is seen while running the dnf update command. [root@xxxx]# yum Ther…
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OCI: SELinux Unable to relabel filesystemApplies To: Oracle Cloud Infrastructure Linux x86-64 Symptoms: Unable to login to the instance due to issues with selinux labels. Multiple "avc: denied" messages detecte…
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PV versus iscsiHi Team, Can some one help us yo verify whether our storage is iscsi or PV from below output. [root@restore ~]# dmesg | grep -i iscsi [ 0.000000] Command line: BOOT_IMAG…
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OCI Linux: Not Able Access Instance due to /etc Directory Permission Change (chmod -R 777 /etc)Applies to: Linux OS - Version Oracle Linux 7.9 and later Linux x86-64 Symptoms: /etc directory permission was accidentally changed to 777 by running command below and u…
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Oracle Linux: Resolving VM Hang Due to Memory Exhaustion Caused by Fluentd OOM ErrorsApplies To: Oracle Cloud Infrastructure Linux OS Symptoms: The VM became inaccessible via PuTTY/SSH and appeared to hang. Critical processes (such as SSSD for authentica…
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OCI: Mounting NFS Filesystem Fails With Error "mount.nfs No such device."Applies To: Oracle Cloud Infrastructure Linux OS Symptoms: Unable to mount NFS share, getting this error: # mount x.x.x.x:/NFS/Share /mountpoint -vvv ... mount.nfs: time…
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restoring block volme to new serverHi Experts, This is a compute machine having OracleLinux 8 version of os. We have a created a block volume from block volume backup. We are attaching it to new instance …
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Grub passwordSummary: 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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Autonomous Linux patching fails with error ”fork/exec /usr/bin/ksplice: no such file or directory:”Applies to: Linux OS - Version Oracle Linux 7.9 and later Linux x86-64 Symptoms: Autonomous Linux patching fails with following error in OSMH failed job log fork/exec /u…
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OSMH:Unable to Update Packages on OCI OS Management Hub Instance using OCI CLI commandsApplies To: Service: OS Management Hub (OSMH) Version: N/A and later Platform: Linux x86-64 Symptoms When attempting to update packages on an instance using the OCI CLI …
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Linux: How To Authenticate docker/Podman CLI Using Auth Token Feature in Oracle Container RegistryApplies to: Linux OS Oracle Cloud Infrastructure Goal This document provides details about Auth Token feature in Oracle Container Registry and how to generate, delete et…
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cannot install bothSummary: 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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Linux: Resolving "/lib64/libstdc++.so.6: version 'GLIBCXX_3.4.xx' not found" ErrorApplies to: Oracle Cloud Infrastructure Linux x86-64 Symptoms: When attempting to install or run an application, you may encounter errors similar to the following: /lib6…
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Oracle Linux - leapp upgrade fails with "Error: conflicts with file from package"Applies to: Oracle Cloud Infrastructure Oracle Linux 7 Symptoms: leapp preupgrade completed successfully but leapp upgrade fails with the following messages: Error: Tran…
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Linux: Installing 3rd Party Package Fails with Missing Dependency Errors for libc.so.6Applies To: Oracle Cloud Infrastructure Oracle Linux ARM64 Symptom Installing a 3rd party RPM package in Oracle Linux 7 OCI instance results in dependency errors: $ rpm …
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Oracle Linux : Re-configuring Curl to Use OpenSSL Instead of NSS on Oracle Linux Servers.Applies To: Oracle Cloud Infrastructure Oracle Linux Goal: This document outlines the support status of Curl usage with OpenSSL instead of NSS on Oracle Linux servers. S…
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Unable to login to Linux/Ubuntu using SSH Don't have SSH KeysSummary: Having trouble logging into Linux/Ubuntu using SSH. I no longer have access to my laptop that had the SSH keys. Tried to follow "Oracle Linux – How to set up a …
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OCI: How to Locate OPC Request ID in OCI Console for Issues TroubleshootingApplies To: Oracle Cloud Infrastructure Information in this document applies to any platform. Goal: This document explains the steps to locate the OPC request ID in the …
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Oracle Linux - Leapp Upgrade Fails due to python3-pyasn1-0.3.7-6.el8.noarch packages conflictApplies to: Oracle Linux 7 Symptoms: Oracle Linux 7 to Oracle Linux 8 Leapp Upgrade Fails due to python packages conflict. Leapp upgrade report shows: Risk Factor: high …
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Oracle Linux - ssh_genkeytypes set to null in /etc/cloud/cloudApplies To: Oracle Cloud Infrastructure Oracle Linux Symptoms: While performing an update by executing sudo yum update this message is shown: warning: /etc/cloud/cloud.c…
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How to Use top Command to Check Swap UsageApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal: This document outlines the steps required to use the top command to check swap usage f…
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OCI : How To Manually Install Oracle-Cloud-Agent on Ubuntu InstanceApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal: This document explains steps to Install Oracle-Cloud-Agent on Ubuntu Instance. Solutio…
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OCI : dnf Command Fails with Error “/lib64/librpm.so.8: file too short”Applies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms: Below error is seen while running the dnf update command. [root@xxxx]# dnf update …
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OCI: sftp or ssh Connections Failing With "ssh_exchange_identification: Connection closed by remote"Applies To: Oracle Cloud Infrastructure Linux OS Symptoms: Intermittently unable to ssh to the server. The following error shows: # ssh server.example.com ssh_exchange_i…
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OCI: Error Unpacking RPM Package setup-2.x.x-x.noarchApplies To: Oracle Cloud Infrastructure Linux OS Symptoms: yum(1) update fails with the following message: Running transaction Updating : setup-2.x.x-x.elx.noarch Error …