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Linux
Discussion List
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How to Bring up Secondary VNICs in an Oracle Cloud Infrastructure(OCI) Oracle Linux 7 InstanceHow to add a secondary VNIC that is persistent through reboots in OL7 using systemd Unit File 1. Use the OCI Web Console to create and attach a secondary VNIC, see: http… -
Ubuntu GPU Image Problem After Kernel UpgradeAn Ubuntu GPU instance fails to load its Nvidia GPU drivers upon being rebooted after a kernel upgrade, when the following command was run prior to the reboot: # apt-get… -
How to delete or change the primary VNIC?As I cannot move the primary VNIC to another VCN, I have added a secondary one and would like to make this primary and then delete the old primary. How can I do that? -
Oracle Linux Automation ManagerOracle Linux Automation Manager is based on the open-source projects Ansible and AWX, is a task engine and web interface for scheduling and running Oracle Linux Automati…
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SSH Permission denied (publickey,gssapi-keyex,gssapi-with-mic) when using PuTTYGEN key files.Using PuTTYgen ssh keys with the OpenSSH ssh command on a linux system fails with Permission denied errors because it uses a different format than OpenSSH keys. Attempti…
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Automate OSMS to OSMH migration?Summary: Is there an automated solution available to migrate hosts from OSMS to OSMH? The manual process using the control plane is way to slow and tedious when you have…
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Oracle Linux - resize2fs: New size too large to be expressed in 32 bitsApplies To: Oracle Linux Cloud Service - Version Oracle Linux 8.0 and later Oracle Cloud Infrastructure Symptoms: Resizing the EXT4 filesystem throwing below error: resi…
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Oracle Linux: After Upgrading from OL7 to OL8, Instance Becomes Unresponsive After 24 HoursAPPLIES TO Linux OS - Version Oracle Linux 7.0 and later Linux x86-64 SYMPTOMS Instance becomes unreachable about 24 hours after boot (aligns with DHCP lease time = 8640…
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Oracle Linux: System Fails to Boot Due to "error: symbol `grub_calloc` not found" at GrubApplies To Oracle Linux 7.0 and later Summary An Oracle Linux instance is unable to complete the boot process and halts with the following error message. Booting from Ha…
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OCI: How to Perform Upgrade from Autonomous Linux 7 to 8 Using Leapp UtilityGoal: This document describes the process of upgrading an Oracle Autonomous Linux instance from release 7 to release 8 by leveraging the Leapp utility. Solution: 1. When…
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SSH Server CBC Mode Ciphers EnabledSummary: 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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home/ubuntu owner changed to opc so SSH connection as ubuntu failsPlease someone help: problem is that after a reboot "something" is changing user/group of the /home/ubuntu folders from ubuntu/ubuntu to opc/opc. This deativates ssh log…
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Oracle Linux: How to Configure RDP Server in Oracle Linux 10APPLIES TO Linux OS - Version Oracle Linux 10 GOAL From Oracle Linux 10 (OL10) onwards, there is no VNC server available. It is replaced by RDP (Remote Desktop Protocol)…
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OCI: SSH Connection Fails with "Remote side unexpectedly closed network connection"Applies To: Oracle Cloud Infrastructure Linux x86-64 Symptoms: The ssh session fails after entering the username. The authentication process waits for few seconds and th…
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Oracle Linux: How to Configure XRDP Server for GNOME Desktop SessionApplies To: Oracle Cloud Infrastructure Oracle Linux x86_64 Rocky Linux x86_64 Summary: This document explains steps to configure XRDP service. So that Desktop session c…
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MakefileException Exception String: Error in invoking target 'libasmclntsh19.ohso libasmperl19.ohsoSummary: 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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Oracle Linux: Error "kernel: i40e : Module type unrecognized" are reported for NIC InterfacesApplies To Linux OS - Version Oracle Linux 8.0 and later Linux x86-64 Symptom /var/log/messages reports the below errors for multiple NIC interfaces: kernel: : Module …
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NetworkManager Fails with Errors "NM_CONTROLLED: command not found" and "invalid line ignored"Applies To: Oracle Cloud Infrastructure Linux x86-64 Symptoms: After rebooting the OCI instance, NetworkManager.service does not start automatically. As a result, Networ…
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OSMH: kexec-tools: Interrupted by header callback: Inconsistent server dataApplies To: Oracle Cloud Infrastructure - Version N/A and later OS Management Hub (OSMH) Symptoms: Oracle Linux instance under OSMH control reports the following error d…
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Oracle Linux: rhn-plugin Error Observed on Oracle Linux Instance Registered to OS Management HubApplies To Linux OS - Oracle Linux 7.0 and above. Summary Instance is managed via OS Management Hub in Oracle Cloud Infrastructure (OCI) and the below error occurs durin…
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OCI: ExaCC Linux Instance Crashed with "Kernel Panic: NULL Pointer Dereference" in trailing_symlinkApplies: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux Server Release 7/8 Symptoms: ExaCC instance with UEK6 kernel version 5.4.17-2136.336.5.3.2.el8u…
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OCI: SSH Login Failure with "Permission Denied (Publickey)" Error on Ubuntu InstanceApplies To: All Users Oracle Cloud Infrastructure - Version N/A and later Symptoms: The SSH login to the Ubuntu instance using the ubuntu user is failing with the follow…
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OCI: In Oracle Linux 7/CentOS 7 Instances, /etc/resolv.conf Gets Wiped After the First RebootApplies To: Oracle Cloud Infrastructure Oracle Linux Server release 7 Symptoms: The /etc/resolv.conf file is wiped out after the first reboot in Oracle Linux 7 /CentOS 7…
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Oracle Linux: System RAM does not Match with the Value in OCI ConsoleApplies to: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux 7 and later Goal: Understand why Oracle Linux does not show the same amount of Memory (RAM) …Alejandro Rodriguez L.-Oracle 21 views 0 comments 0 points Most recent by Alejandro Rodriguez L.-Oracle -
Oracle Linux: SSH login delay (~30s)Applies To: Oracle Linux 7 and later Symptoms: Users report SSH takes ~20–30 seconds to log in after boot, even though the OS finishes booting quickly. systemd-analyze b…
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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 21 views 0 comments 0 points Most recent by Alejandro Rodriguez L.-Oracle
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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…
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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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how can we mount the boot volume backup on same server in oel 9Summary: We have taken backup of boot volume and trying to mount on same server for data restoration. unable to mount. getting mount: /old_boot: unknown filesystem type …
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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…