Category 631
Discussion List
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OCI: Linux Instance failed with error "Failed to switch root: Specified switch root path '/sysroot'"Applies to Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms System boots to Emergency Mode with the following seen in the file /run/initramfs/rd… -
Ksplice Error "Unable to Install This Update Because Your Running Kernel Has Been Modified"An Oracle Linux server encounters errors when attempting to download and install new ksplice uptrack updates, and fails with the error message, as seen in the following … -
How To Install 32-bit Packages on Systems Running 64-bit Versions of Oracle LinuxSometimes, specific applications on a server using x86_64 based architecture will need to use 32-bit OS Libraries, even though the version of Linux running on the server…
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How To Boot An Ubuntu Server Into Recovery ModeIf you need to troubleshoot or resolve problems with an Ubuntu Server failing to boot correctly, you can boot into recovery mode by selecting some options available in U…
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How To Reset the root Password on Oracle Linux In Rescue ModeIt is possible to reset the root password systems running Oracle Linux 7 or higher without knowing the current root password by booting the server into rescue mode via s…
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How To Downgrade a Distribution Upgrade on an Ubuntu Instance on Oracle Cloud Infrastructure (OCI)Linux distribution upgrades, including Ubuntu distribution upgrades, result in many major package upgrades, and in general it is not feasible to downgrade all the packag…
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How To Check The Network Configuration on a Linux InstanceThe ip command can be used with different options to check and configure network devices on a Linux system. To check the current network link-layer configuration for all…
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How To Create an Ubuntu Instance Using Oracle Cloud Infrastructure (OCI) Platform ImagesYou can create an instance running Ubuntu in OCI by selecting any of the available Ubuntu Platform Images when creating the instance. For more details on the current Pla…
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How to Configure KDUMP On Linux to Collect Kernel Panic Data from A Hung/Crashed SystemWhen a Linux system experiences a kernel panic and crashes unexpectedly or hangs, it can be configured to collect a crash dump of the system state and kernel calls leadi…
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How To Install & Configure KDUMP on Oracle Linux 61). Install the kexec-tools package: # yum install kexec-tools 2). Configure the amount of memory reserved for the kdump kernel in /boot/grub/grub.conf by adding the cra…
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How to configure KDUMP on Oracle Linux 71). Install the kexec-tools package if not already installed: To use the kdump service, you must have the kexec-tools package installed. To do so, type the following at …
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How to Configure KDUMP on Oracle Linux 8 and 91). If the kdump package is not already installed on your system, install it: # dnf install kexec-tools 2). With the proper administrative privileges, edit the /etc/defa…
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OCI: The “df -hT” Command HangsApplies to: Oracle Cloud Infrastructure - Version N/A and later Symptoms: OS level command like df -hT are hanging or provide no output. Cause The issue is due to a deco…
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Hello, what is the problem with "Oracle Cloud Infrastructure DNS | Multiple Regions | CN-1061707"? HSummary:Hello, what is the problem with "Oracle Cloud Infrastructure DNS | Multiple Regions | CN-1061707"? How long does it take to fix it? My business is all suspended.…
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Hello, what is the problem with "Oracle Cloud Infrastructure DNS | Multiple Regions | CN-1061707"? H总结：Hello, what is the problem with "Oracle Cloud Infrastructure DNS | Multiple Regions | CN-1061707"? How long does it take to fix it? My business is all suspended. C…
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Upgrade to the Latest Version of Oracle Java JRE/ JDKApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms Below paths are showing as vulnerable and need to be updated in Oracle Linux: Oracl…
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Ksplice Patch Releases for Unbreakable Enterprise Kernel (UEK)This document provides list of recent ksplice releases patches for UEK. On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf, these updates will be inst…
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kernel panic - not syncing: VFS:unable to mount root fs on unknown-block in oracle linux server 6.10Summary: I am not been able to boot on single mode. L tried all the list of kernel i.e. the options that it shows for boot mode but none of it help me Content (required)… -
OCI - Oracle Cloud Agent plugins are not available on domain controllersApplies to: Oracle Cloud Infrastructure Linux x86-64 Goal: To Have OS Management service available, when you use a Windows Server instance as a domain controller Solutio…
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OCI: How to Increase Root Partition of Ubuntu InstanceApplies To: Oracle Cloud Infrastructure Ubuntu Linux - x86-64 Goal: To Increase the root partition size of an Ubuntu instance in OCI. Solution To resize the root partiti…
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How to Download RPMs Locally from Oracle Linux RepositoriesApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal There is a need to download RPMs from Oracle Linux repositories to then be applied to o…
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Reset user password on remote instanceHi. I have been struggling recently to log into my compute instance, as the password for my user no longer seems to work. (note, I have not changed it, it worked just fi…
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OCI: Instance Without Networking Is Unable to Ping Subnet GatewayApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms OCI Compute OL7 instance suddenly unreachable. When accessing from serial console i…
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Unbreakable Enterprise Kernel (UEK) Release InformationThis document provides list of recent releases of Unbreakable Enterprise Kernel with respective advisory information. For more recent and detailed information, please ch…
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OCI: Yum Unable to Find oracle-cloud-agent RPM package in OL7 InstanceApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms In a OCI OL7 instance where oracle-cloud-agent is not installed, when trying to ins…
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OCI:oci-growfs Utility Failed with Error “Unable to expand /dev/sda3. No partitions expanded, exit.”APPLIES TO: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 SYMPTOMS: Unable to increase the size of root filesystem from default size and it reports fo…
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OCI Linux: Intermittent User Lookup Failure For Local or Remote Users While Using AD AuthenticationApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms Oracle Linux server integrated with AD user is experiencing slow latency and connec…
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How to Change the Value for ARG_MAX in Oracle LinuxApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal In Oracle Linux, the POSIX compliant ARG_MAX parameter determines the possible length i…
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How to Enable zram in Ubuntu 20.04Applies to: Oracle Cloud Infrastructure - Version N/A and later Ubuntu 20.04 and later Goal Enable zram module in ubuntu 20.04 Solution In order to enable zram on Ubuntu…