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OCI:PCP Service pmcd Fails to Start with Error "pmcd.service: Failed with result 'exit-code'"Applies to: Oracle Cloud Infrastructure Oracle Linux 8 and later Symptoms pmcd service fails to start with the following errors. [root@alejanarol9 ~]# systemctl status p…Alejandro Rodriguez L.-Oracle 43 views 0 comments 0 points Started by Alejandro Rodriguez L.-Oracle Linux -
OCI: What are the Minimum Required Software Sources for Various Oracle Linux flavours.Note!! Please register a free account to access the full content and also to participate in Q&A in the community Applies To: Oracle Linux Cloud Service - Version Oracle … -
OCI: SSH Access Failure (“No route to host”) Due to Firewalld MisconfigurationApplies to: Oracle Cloud Infrastructure (OCI) Oracle Linux Instances Symptoms: When attempting to SSH into an Oracle Linux 8 instance on OCI, users encounter the followi…
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OSMH: OSMH Patching Does Not install the latest kernelApplies To: Oracle Cloud Infrastructure OS Management Hub (OSMH) Symptoms: OSMH reports "Nothing to update" during patching operations. Vulnerability reports indicate ol…
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OCI: Enabling GRUB Menu Access on Ubuntu InstancesApplies To: Oracle Cloud Infrastructure (OCI) Ubuntu Linux Instances (20.04 and similar versions) Symptoms: When attempting to access the GRUB menu on an Ubuntu instance…
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OCI: Sudo Command Returns "sorry, you are not allowed to preserve the environment" errorApplies To: Oracle Cloud Infrastructure Oracle Linux Symptoms Running sudo command with "-E" option reports the following error. $ export MY_NAME=abcd $ sudo -E bash -c …
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OCI: OKE Oracle Linux instance hangs intermittently and mlx5_core: transmit queue 0 timed outApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 on Oracle Public Cloud Symptoms: In OKE cluster environment Oracle Linux VM goes into hung s…
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OCI: SSH Connection to Instance Fails with Error "Server Refused Our Key"Applies To: Oracle Linux Cloud Service - Version Oracle Linux 7.0 and later Oracle Cloud Infrastructure Information in this document applies to any platform. Symptoms Un…
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OSMH: Increasing the Limit for Custom Software Sources (CSS) in OS Management HubApplies to: Oracle Cloud Infrastructure (OCI) OS Management Hub (OSMH) All Supported Oracle Linux Versions Symptoms: Users attempting to create more than 50 Custom Softw…
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OSMH - Unable to Register Instance After MigrationApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms: An instance was migrated from OSMS to OSMH, but the instance is not seen in the OS…
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Oracle Linux: Serial Console Displaying Grub Error "you need to load the kernel first"Applies to: Oracle Cloud Infrastructure Oracle Linux 8 / Oracle Linux 9 Goal: To Restore Oracle Linux to a working state Symptoms: Error messages below are displayed whe…Alejandro Rodriguez L.-Oracle 19 views 0 comments 0 points Started by Alejandro Rodriguez L.-Oracle Linux
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OCI: Unable to Boot Instance, Getting Error "can't boot blockdev"Applies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 on Oracle Public Cloud Symptoms: Instance is not booting up and getting into emergency mode …
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SELinux Permission Denied Error When Writing Logs to Custom DirectoryApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 SYMPTOMS: The rsyslog service is failing to write logs to a custom directory (e.g: /u01/rsys…
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Linux: Tigervnc Configuration Fails With Error "No user configured for display"Applies To: Oracle Cloud Infrastructure Oracle Linux Symptoms: Tigervnc Configuration Fails With Error $ systemctl start vncserver@\:1.service Job for vncserver@:1.servi… -
OCFS2 Mount Fails with 'Cluster name is invalid while trying to join the group' ErrorApplies to: Oracle Cloud Infrastructure Linux x86-64 Symptoms: When a secondary network interface is being used for the heartbeat, the OCFS2 service does not mount the s…
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OCI: ALX - Uptrack is Unable to Determine your Effective Kernel VersionApplies to: Oracle Cloud Infrastructure - Version N/A and later Oracle Autonomous Linux Symptoms: These messages are shown when a SSH connection is initialized. Using us…Alejandro Rodriguez L.-Oracle 13 views 0 comments 0 points Started by Alejandro Rodriguez L.-Oracle Linux
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OCI: Unable to Mount File System Due to Error "Filesystem has duplicate UUID can't mount"Applies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms: mount(8) command is failing with below error: [root@xxxx ~]# mount /dev/sdg /plan_…
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OCI: Resolving Ksplice Update Failure Due to a Running Modified KernelApplies To: Oracle Cloud Infrastructure Oracle Linux Symptom: When applying Ksplice patches, the following error occurs: Cause: The osquery program was running on the se…
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OCI: uptrack-upgrade Reports "Cannot find Ksplice Uptrack information for your kernel version“Applies To: Oracle Cloud Infrastructure Linux OS Symptoms Running the uptrack-upgrade command reports no updates available as shown below. [root@XXXX ~]# # uptrack-upgra…
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OCI: SSH Fails with Error "identity_sign: private key /root/.ssh/id_rsa contents do not match publicAPPLIES TO: Oracle Cloud Infrastructure Linux OS SYMPTOMS ssh fails with the following error: # ssh identity_sign: private key /root/.ssh/id_rsa contents do not match p…Baisakhi Mahapatra -Oracle 217 views 0 comments 0 points Started by Baisakhi Mahapatra -Oracle Linux
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OSMH: Error "Invalid operation" While Applying Patch to a Group Using Custom Repo with kspliceApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms The following error is seen with OSMH while applying a patch to a group using a cus…
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OSMH: Packages From 3rd Party/Private Software Source Does not Display in Instance Available PackageApplies to: Oracle Cloud Infrastructure OS Management Hub (OSMH) Symptoms After creating 3rd party software source for an external vendor repository, checking the instan…
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Oracle Linux: sysctl Command Hangs While Increasing HugepagesApplies To: Oracle Cloud Infrastructure Symptom: The sysctl command hangs when attempting to increase the number of hugepages. Cause: The system's memory has become frag…
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OCI:Leapp Preupgrade Reports 'Oracle RDMA detected, but OL9 RDMA repository has not been enabled"Applies To: Oracle Cloud Infrastructure Oracle Linux 8 Symptoms The leapp preupgrade for Oracle Linux 8(OL8) to Oracle Linux9(OL9) reports the following risk: /var/log/l…
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OCI: How To Check Next Runtime For SAR Log Generation In Oracle Linux 8Applies to: Oracle Cloud Infrastructure Oracle Linux x86_64 Goal This article is intended to provide an overview of systemd timers to check the next date:time of the sar…
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OCI- kernel: CIFS VFS: Close unmatched openAPPLIES TO: Oracle Cloud Infrastructure Linux OS SYMPTOMS On the system, /var/log/message log shows below error related to cifs -- cat /var/log/messages|grep -i cifsJan …
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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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Oracle Linux yum/dnf Diagnostic GuideApplies To: Oracle Linux 8 and 9 Goal: This is a guide to diagnose common YUM/DNF problems. Solution: Known problem and solution for DNF/Yum. DB Corruption Refer to disc…
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OCI: OSMH Plugin not available “Plugin OS Management Hub Agent not present for instance ocid”Applies To: Oracle Cloud Infrastructure OS Management Hub (OSMH) Symptoms Oracle Cloud Agent or OS Management shows OS Management Hub agent not available for an existing…
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Oracle Linux - Unable To Access Samba Share Due To Kerberos "Preauthentication failed"APPLIES TO Linux OS - Version Oracle Linux 7.9 and later Linux x86-64 Oracle Cloud Infrastructure SYMPTOMS Unable to access samba share from Linux instance where the beh…