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Discussion List
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OSMH:Quick Setup of a Management Station Installation with a Proxy which Injects its own CertificateApplies To: Oracle Cloud Infrastructure OS Management Hub (OSMH) Goal: To install a new management station for on-premises clients, when using a proxy which injects its … -
OSMH:OL9 Job Update Process Fails with Ksplice user space patchesAPPLIES TO: Linux OS– Oracle Linux 9.0 [OL9] Oracle Cloud Infrastructure - Version N/A and later SYMPTOMS: New Oracle Linux 9 instance with OSMH service working as expec…
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OSMH – How to Check OSMH Agent Services on OCI WindowsApplies to: Windows 2016 and Later Platform x64 Goal: How to do basic check for Windows instances OSMH agent services SOLUTION: Login to the instance via Microsoft Remot…
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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 : Quick Setup Of OSMH For OCI InstancesApplies To: OS Management Hub Oracle Cloud Infrastructure Autonomous Linux Goal: To Setup OS Management Hub on a newly created OCI instance or an existing OCI instance r…
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Oracle Linux: How to Generate and Use Auth Token/Secret Key for ULNApplies to: Linux OS - Version Oracle Linux 7.0 and laterLinux x86-64 Goal This document provides details about Auth Token/Secret Key feature in ULN and how to generate,…
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Kernel panic During Boot Due to Corrupted LibrariesApplies To: Oracle Cloud Infrastructure Oracle Linux Symptoms Oracle Linux instance showed instability and after a graceful reboot it shows the following kernel panic [[… -
Preventing Duplication of Remote Syslog Log Entries in /var/log/messagesApplies to: Oracle Cloud Infrastructure Linux x86-64 Symptoms Syslog records received from remote systems are being logged in both the dedicated log file (rsyslog--%HOST…
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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… -
OCI- unable to SSH node with error Permission denied (publickey,gssapi-keyex,gssapi-with-mic)Applies to: Oracle Cloud Infrastructure Linux OS Symptoms: [root@xxxxxx ~]# ssh 172.X.X.X.X Permission denied (publickey,gssapi-keyex,gssapi-with-mic). Secure log : sshd…
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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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OCI - Getting "EXT4-fs warning: mounting fs with errors, running e2fsck is recommended."APPLIES TO: Oracle Cloud Infrastructure Linux OS SYMPTOMS While mounting the filesystem a warning message such as one of the following is triggered in the messages: kern…
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OCI: SSH Connection Fails After Upgrading from Oracle Linux 8 to Oracle Linux 9Applies To: Oracle Cloud Infrastructure Oracle Linux OS Symptoms After upgrading from Oracle Linux 8 to Oracle Linux 9, the system was not reachable via SSH (PuTTY) due …
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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 fails to boot with error: "core perfctr but no constraints; unknown hardware!"Applies To: Oracle Cloud Infrastructure Linux OS Symptoms Console history shows below error : [ 0.054021] Performance Events: [ 0.054490] core perfctr but no constraints…
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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: Oracle Linux Instance Stops With “reboot: Power down” After BootApplies to: Oracle Cloud Infrastructure - Version N/A and laterLinux x86-64 Symptoms System stops immediately after booting: [[0;32m OK [0m] Stopped Monitoring of LVM2 m…
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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- yum update Fails with [Errno 14] curl#7 - "Failed connect to 10.x.x.x:80; Connection refused"Applies To: Oracle Cloud Infrastructure Linux OS Symptoms Server is trying to access a local YUM repository but is unable to connect to it due to a Connection refused. #…
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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: 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 - 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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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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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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Mounting Block Volume from VM to DBCS serverHi Experts, We are using Oracle Linux 8 in both the VM We are using OCI DBCS VM which is Base Database Service. We have a requirement to place application files daily in…
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Moved: Inbound connection to internal serverThis discussion has been moved.
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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: "kernel: smp: csd: Detected non-responsive CSD lock” Messages in the System LogsAPPLIES TO Oracle Cloud Infrastructure Oracle Linux SYMPTOMS Below messages are noticed in the /var/log/messages: kernel: smp: csd: Detected non-responsive CSD lock (#1)…
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OSMH: On-prem Management Agent Install Fails with "The registration attempt failed due to javax.net"Applies To: OS Management Hub (OSMH) Oracle Cloud Infrastructure Symptoms: In this scenario the on-premise management station is configured with a proxy to reach the oci…
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OSMH: Setting Up Dependency Jobs in OS Management HubAPPLIES TO Oracle Cloud Infrastructure OS Management Hub (OSMH) GOAL Explain job dependency limitations in OSMH. SOLUTION OS Management Hub does not currently support di…
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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…
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Oracle Linux - Unable to Boot - Warning: /dev/mapper/ocivolume-root does not existApplies To: Oracle Cloud Infrastructure Oracle Linux 7 / 8 / 9 Symptoms: Oracle Linux fails to boot ; Landing in Dracut shell. Console history shows : [ 193.309821] drac…
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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…
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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: 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 Oracle Linux: rescan command is failed on Linux after scaling up disk space from consoleSummary: we need to resize for OCI instance disk space, because /dev/sdb for mount point /u01/install/APPS is 100% full in this case, we are expanding an existing volume…
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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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Looking for rationale why versioned OSMH sources aren't available for OSMH groupsSummary: I have multiple customers who would love versioned OSMH sources that can be used with OSMH groups. The lifecycle environment approach isn't feasible because we … -
Autonomous Linux: OSMS End of Life FAQApplies To: Oracle Cloud Infrastructure Oracle Autonomous Linux OS Management Service (OSMS) Goal: This document provides answers to frequently asked customers questions…
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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…
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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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When will the latest Oracle Linux AMIs be posted on AWS?Summary: The Public AMIs for Oracle Enterprise Linux on AWS are a few minor versions back. When will the latest AMIs be made available? Content (please ensure you mask a…
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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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Unable to SSH to ubuntu EC2 instance.Summary: After restarting the EC2 instance from OCI console. I'm not able to access it through SSH and getting following error "Network error: Connection timed out". But…
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OCFS2-"Checking O2CB cluster "ociocfs2": Offline" is not coming online.Summary: HI Team, We are setting up OCFS2 on OCI Console Compute instance having oel 8 (Red Hat Enterprise Linux release 8.10 (Ootpa) but somehow Cluster is not coming o…
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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…