Linux
Discussion List
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OCI: DBCS Instance Unable to Boot and Report Error "Boot from SAN device 0x80 failedApplies to: Oracle Cloud Infrastructure Linux x86_64 SYMPTOMS Unable to boot OCI DBCS instance with following error and prior to this error fiocommand was executed on ro… -
OCI: Facing Issue with Linux Instance BootingApplies to: Oracle Cloud Infrastructure SYMPTOMS OCI Oracle Linux instance fails to boot. Serial console connection shows an EFI boot error: Registered SAN device 0x80 A…
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OCI: Systemd Failed To Start Services And Resulted in Error: "Failed to get D-Bus connectionApplies to: Oracle Cloud Infrastructure Linux OS – Version Oracle Linux 7.0 and later SYMPTOMS In Oracle Linux 7.x server, systemd was broken and thus the services inclu…
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OCI: Why OL7 Instance Network Status Reports Error "Failed To Start LSB: Failed To Start LSB: BringApplies to: Oracle Cloud Infrastructure Linux x86_64 SYMPTOMS After network restart, service status on OCI instance is report following errors; # systemctl status networ…
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How to Remove stale ISCSI Target Node Information from ISCSI Initiator ServerApplies to: Oracle Cloud Infrastructure Linux OS – Oracle Linux 5.1 to Oracle Linux 7.6 (OL5U1 to OL7U6) SYMPTOMS Stale ISCSI target connections which are still present … -
OCI: SSH to Instance Failed at "Connection refused"Applies to: Oracle Cloud Infrastructure Linux x86_64 SYMPTOMS When ssh to an instance, it fails with "Connection refused" as follows: OpenSSH_7.1p2, OpenSSL 1.0.1g 7 Apr…
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Oracle Linux: Server Got Shutdown With "systemd-logind: Power key pressed" MessageApplies to: Linux OS - Version Oracle Linux 7.0 and later Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms: Server got shutdown with the below m…
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OCI - Unable to SSH into Instance with Error "connect to host x.x.x.x port 22: Connection refused"Applies to: Oracle Cloud Infrastructure Linux x86-64 Symptoms: Unable to login to OCI instance and attempts fail with error: ssh: connect to host x.x.x.x port 22: Connec…
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System Hang in: "mfe_fileaccess_wake_up_all_events_and_reset_scanningQueue"Applies To: Oracle Cloud Infrastructure - Version N/A and later Linux OS - Version Oracle Linux 6.0 and later Symptoms: Instance hangs with /var/log/messages* showing RI…
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Local user account unable to "su" to another local user accountApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux OS - Version Oracle Linux 5.0 to Oracle Linux 8.3 with Unbreakable Enterprise Kernel [5.4.17] [Rele…
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How to Install pip in OL7 to Enable Python Modules InstallationApplies To: Oracle Cloud Infrastructure - Version N/A and later Goal: Need to install pip to install additional python modules in OL7. Solution: In Oracle Linux 7 OCI in…
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How To Apply Security Update On Oracle Linux 6 and 7Applies to: Linux OS - Version Oracle Linux 6.0 to Oracle Linux 7.6 [Release OL6 to OL7U6] Oracle Cloud Infrastructure - Version N/A to N/A [Release 1.0] Linux x86-64 Go…
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Setting PRESERVE_HOSTINFO=2 in /etc/oci-hostname.conf Does Not Prevent /etc/resolv.conf OverwriteApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms On : OCI Linux instance Setting PRESERVE_HOSTINFO=2 in /etc/oci-hostname.conf does …
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How to reset a forgotten root password from Serial Console of Oracle Linux instance in OCIApplies to: Oracle Cloud Infrastructure - Version N/A to N/A [Release 1.0] Information in this document applies to any platform. Goal If you can't SSH to Oracle Linux In…
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OCI: How to configure a secondary VNICs in OL7 Instance via oci-network-configApplies to: Oracle Cloud Infrastructure - Version N/A and later Information in this document applies to any platform. Goal This article illustrates how to use OCI utili…
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How to Change MTU SizeApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux OS - Version Oracle Linux 6.0 and later Linux x86-64 Goal: This document details steps to change MT…
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Set up Secure VNC server in OCI Compute instancesApplies to: Oracle Cloud Infrastructure - Version N/A and later Information in this document applies to any platform. Goal Set up Secure VNC server in RHEL /Oracle Linux…
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Uptrack Service in Failed, Inactive, or Dead StateApplies to: Oracle Cloud Infrastructure - Version N/A to N/A [Release 1.0] Linux OS - Version Oracle Linux 7.0 and later Information in this document applies to any plat…
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Troubleshooting Unable to ssh Into an OCI instancePurpose There are a lot of potential causes for not being able to ssh in to an instance. The most common are outlined here. Troubleshooting Steps Issue 1: Security list …
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OCI - System don't finish the boot and stay in iSCSI error loopApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal If the System don't complete the boot and as consequence stay inaccessible. In the cons…
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OCI - How to generate SSH key pair to access OCI instance?Applies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal To generate ssh key pair for accessing the OCI instance. Solution There are two ways of…
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Permission denied (public key) during SSH login with opc userApplies to: Oracle Linux Cloud Service - Version Oracle Linux 6.0 and later Oracle Cloud Infrastructure Linux x86-64 Symptoms User gets a permission denied (public key) …
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Oracle Linux: 100% CPU Used By Abrt-hook-ccpp ProcessApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux OS - Version Oracle Linux 7.0 to Oracle Linux 7.9 [Release OL7 to OL7U9] Linux x86-64 Symptoms Evid…
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OCI - How to Perform OCI CLI Offline InstallationApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux OS - Version Oracle Linux 7.0 and later Linux x86-64 Goal This document details steps on how to per…
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How to Disable Daily "anacrontab" Mail AlertsApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal: The goal of this article is to disable all mail alerts sent by "anacrontab" service da…
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"nstat -az" Causes High CPU Usage and Dies with "Aborted (core dumped)" MessagesApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms: While running sos to collect an sosreport bundle, the machine may hang and generat…
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SSH Login Failed After Adding "AllowUsers" and "AllowGroups" Directives into /etc/ssh/sshd_configApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux OS - Version Oracle Linux 6.0 and later Linux x86-64 Symptoms: SSH client like PuTTY can return a f…
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How to Install and Run Oracle Ksplice in (OCI)Applies To: Oracle Cloud Infrastructure - Version N/A to N/A [Release 1.0] Linux x86-64 Goal: Normally, Oracle Linux instances running platform images from OCI should al…
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How to Resize Root Partition of Oracle Linux Instance in OCIApplies To: Oracle Cloud Infrastructure - Version N/A to N/A [Release 1.0] Oracle Cloud Infrastructure Information in this document applies to any platform. Goal: To res…
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The Root Filesystem Turns Read-only With I/O errors On An OCI Instance Running Ubuntu 18.04An Oracle Cloud Infrastructure (OCI) Instance running Ubuntu 18.04 as its operating system experiences its root filesystem turning read-only with I/O errors. The root fi…