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Linux
Discussion List
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OSMS:Patching Failed With Error “Error: There are no enabled repositories in "/etc/yum.repos.d"Applies To: Oracle Cloud Infrastructure Linux x86-64 SYMPTOMS: OSMS Patching failed with error : $ yum update --security This system is receiving updates from OSMS serve… -
Oracle Linux - Unable to "su" to non-root userApplies to Linux x86_64 on Oracle Public Cloud Symptoms Unable to "su - user" from the "opc" user account, getting error message as below: [opc@instance] su - user Passw…
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Oracle Linux – Oracle Linux 8.8 instance cannot mount NFS Share.APPLIES TO: Linux OS – Version Oracle Linux 8.0 to Oracle Linux 9.0 [Release OL7 to OL9] Linux x86_64 on Oracle Public Cloud GOAL: Mount NFS Share. The rest of instances…Alejandro Rodriguez L.-Oracle 125 views 0 comments 0 points Started by Alejandro Rodriguez L.-Oracle -
Oracle Linux – How to Increase Entropy ValueAPPLIES TO: Linux OS – Version Oracle Linux 7.0 to Oracle Linux 9.0 [Release OL7 to OL9] Linux x86_64 on Oracle Public Cloud UEK5 / UEK6 / UEK7 GOAL: Increase entropy va…
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Ubuntu & VNC.Hello CCC, I have Ubuntu 5.15 up and running in the OCI cloud. I installed X11 & tigervnc. I can unable to VNC connect to the Ubuntu server using an ssh tunnel & user ce… -
update ubuntu private instanceSummary: hi all I created a private Ubuntu instance using the Canonical-Ubuntu-22.04-Minimal-2023.08.27-0 image the image is connected to an public subnet and the vcn ha… -
OCI – Ubuntu 22 .04 LTS Instance Stops Responding 20 Minutes After BootApplies to: Oracle Cloud Infrastructure - Version N/A and later Ubuntu 22.04 LTS Symptoms Twenty minutes after being started, the instance stops responding completely – …
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Cannot Install Packages with Yum - “[Errno 14] curl#56 - "Callback aborted" - Trying other mirror.Applies to: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux 7 x86_64 and later Symptoms System is hosted in Frankfurt region and not able to install pac…
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Ubuntu Instance Can't connect to MQTT service on port 1883APPLIES TO: Oracle Cloud Infrastructure - Version N/A and later Information in this document applies to any platform. SYMPTOMS Oracle cloud server running a MQTT service…
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Secure way to do a sudo on linux serverSummary: We have a need to limit a linux user's ablilty to Sudo to specific other users We have 2 options for the Entry on /etc/suoders.d. Which among these you recommen…
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OCI: Unable to Perform dnf updateSymptoms: “dnf update” fails with the following error: # dnf update Last metadata expiration check: 0:09:35 ago on Fri 11 Aug 2023 07:42:44 AM GMT. Error: Problem: packa…
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OCI: How to Run a Script During Boot in Ubuntu Linux 22.04Applies to: Oracle Cloud Infrastructure - Version N/A and later Ubuntu Linux x86-64 Goal There is a need to run a custom script to execute a set of commands during the s…
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OCI: OSMS Fails with Error: "There was an error communicating with OSMS server"APPLIES TO: Oracle Cloud Infrastructure Linux x86-64 SYMPTOMS: Unable to download rpm packages via yum or dnf , gives below error $ dnf repolist There was an error commu…
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How To Troubleshot Login Problems Caused by .bashrcApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal If the configuration of .bashrc cause it to exit, that can cause problems like preventi…
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OCI: Cgroup Memory Corruption on UEKr4 KernelsApplies to: Oracle Cloud Infrastructure Symptoms On a system with kernel UEKr4, the out-of-memory killer ( oom-killer ) killed a process due to its memory usage [ 315.23…
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How To Configure DB Nodes to Generate VMCore on iSCSI Boot DiskApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal Database nodes that boot from iSCSI need special configuration to be able to create vmc…
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OCI: Unable To Mount Block Volume To Multiple Linux InstanceAPPLIES TO: Oracle Cloud Infrastructure Linux x86-64 SYMPTOMS Customer is getting an error while mounting a block volume restored from a backup [root@xxxxxxxxxxx-7-8 ~]#…
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OCI: How To Clean Or Free Space In /boot Filesystem In Oracle LinuxAPPLIES TO: Oracle Cloud Infrastructure Oracle Linux GOAL How To Clean Or Free Space In /boot Filesystem In Oracle Linux [root@ server0 opc]# df -hT /boot Filesystem Typ…
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Oracle Linux – How To Return From Grub Prompt To The Grub MenuAPPLIES TO: Linux OS – Version Oracle Linux 7.0 to Oracle Linux 9.0 [Release OL7 to OL9] Linux x86_64 on Oracle Public Cloud GOAL: This document describes how to return …
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OCI: Yum Command Failed With Error "Curl error (6): Couldn't resolve host name for https://yum..."APPLIES TO Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 SYMPTOM The following “yum” command fails as it cannot resolve the URL contained in the “repo…
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Oracle Linux – High CPU Usage by Unknown Process Prevents Users to Login.Applies to: Linux OS – Version Oracle Linux 7.0 to Oracle Linux 9.0 [Release OL7 to OL9] Linux x86_64 on Oracle Public Cloud Goal: Find out why users are not able to log…
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X-Server access is denied on hostTrying to launch GUI wizard of Oracle FMW Infrastructure 12.2.1.3.0 on Linux 7 using jdk-8u211-linux-x64 but receiving the following error: X-Server access is denied on … -
Oracle Linux: How to Reset or Set the Root (or opc) Password in Oracle Linux 7Applies to: Oracle Cloud Infrastructure Linux OS - Version Oracle Linux 7.x Linux x86-64 Goal This article explains how the root password can be reset on Oracle Linux 7.…
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Moved: replace "Always Free" instanceThis discussion has been moved.
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Oracle Linux - How to configure SFTP with chroot enabledAPPLIES TO: Linux OS – Version Oracle Linux 7.0 to Oracle Linux 9.0 [Release OL7 to OL9] Linux x86_64 on Oracle Public Cloud GOAL: Uploading / Downloading files using an…Alejandro Rodriguez L.-Oracle 596 views 0 comments 0 points Started by Alejandro Rodriguez L.-Oracle
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OOM kills DNF during sudo dnf upgrade -y on OCI Free Oracle Linux 8.7Summary: OOM kills DNF during sudo dnf upgrade -y on OCI Free Oracle Linux 8.7 Content (required): I have an OCI Free with Oracle Linux 8.7 (image was 8.6) that used to … -
OCI: How to Setup X for X11 Forwarding in Oracle Linux 8APPLIES TO: Oracle Cloud Infrastructure Oracle Linux 8 (any version) GOAL: How to install basic X libraries and clients to allow X11 Forwarding via SSH in Oracle Linux 8…
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Oracle Linux - How to mount a SMB/CIFS Share using SYSTEMDAPPLIES TO: Linux OS – Version Oracle Linux 7.0 to Oracle Linux 9.0 [Release OL7 to OL9] Linux x86_64 on Oracle Public Cloud GOAL: Mount a SMB/CIFS share using SYSTEMD a…Alejandro Rodriguez L.-Oracle 1.1K views 0 comments 0 points Started by Alejandro Rodriguez L.-Oracle
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How do I reset an instance to default image?Summary: Resetting an instance to default supplied image Content (required): I created an instance with image imported from oracle supplied image for Ubuntu. The instanc…
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postfix and oci smtp serverHi, I've an Oracle Linux vm, version 7.9 and Postfix 2.10.1 I'm trying to use postfix as a relay server, and I've used oci smtp credentials of a dedicated oci user to se…