Category 631
Discussion List
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kernel: connectionX:0: detected conn error (1020)Applies To: Oracle Cloud Infrastructure - Version N/A and later Linux OS - Version Oracle Linux 7.0 and later Symptoms: Oracle Linux 7 instances running iSCSI may experi… -
OCI: Linux Diagnostic CollectionsApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 GOAL When a linux system runs into unforeseen hang or crash or performance issue, some logs/…
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OCI : oci-growfs Fails to Extend PartitionApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 on Oracle Public Cloud Symptoms: After extending boot volume in OCI console and running the …
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OCI: Oracle Linux 9 Instance Looses the Network Configuration every 24 HoursApplies to Oracle Cloud Infrastructure Oracle Linux Symptoms An Oracle Linux 9 system that boots via iPXE, default in OCI, which normally have the dhcp module automatica…
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How to set soft or hard limit for the number of user's processes “nproc”?APPLIES TO: Oracle Linux Cloud Service - Version Oracle Linux 6.0 and later Linux OS - Version Oracle Linux 6.0 and later Oracle Cloud Infrastructure - Version N/A and l…
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Oracle Linux - How to remove GRUB2 passwordApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 on Oracle Public Cloud GOAL How to remove grub2 password SOLUTION To remove the grub2 passwo…
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OCI- The root filesystem is periodically filling up to 100% space usedApplies To Oracle Cloud Infrastructure Linux x86-64 Symptoms $ df -h | egrep "Filesystem|ocivolume-root" Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/…
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Oracle Linux: How to Calculate Memory UsageAPPLIES TO Linux x86-64 Oracle Cloud Infrastructure GOAL This document describes how to calculate Linux memory usage. SOLUTION 1. Calculate memory usage using SAR $ sar …
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Linux: Use attempting to login or "su" reports error: "Resource temporarily unavailable"Applies to Oracle Linux - Version 7 and later Oracle Cloud Infastructure Symptoms Login or su to a particular user fails sometimes. The logs show the following error: No…
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Oracle Linux: SSH Security Configuration Rollback ProblemApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux OS - Version Oracle Linux 7.0 to Oracle Linux 9.3 [Release OL7 to OL9U3] Information in this docume…
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Oracle Linux: Rsyslogd error: fopen() failed for path: '/var/lib/rsyslog/imjournal.state.tmp'Applies to: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux x86-64 Symptoms Following error occurs many times in /var/log/messages and little to no othe…
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OCI: Linux Instance Unstable and Keeps Rebooting with “check_map_access+0x1f/0x48”Applies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms Oracle Linux instance becomes unstable after installing “datadog” agent and it keep…
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Limiting the use of the 'su' command to specific groups related to 'su'.I intend to create a 'wheel' group and modify permissions for groups related to 'su' command usage so that only those groups can utilize the 'su' command. Additionally, …
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Oracle Linux: Installation of compat-libstdc Fails with "Unable to find a match: compat-libstdc"APPLIES TO: Linux OS - Version Oracle Linux 8.0 and later Linux x86-64 SYMPTOMS An application on Oracle Linux 8 requires compat-libstdc++-33, however when installing th…
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Oracle Linux: audit Logs are Also Going to /var/log/messagesApplies To: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms: /var/log/messages file significantly increase in size and mostly contain the audit…
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OCI: Yum Update Fails With duplicate package errorApplies to Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal When trying to use yum to update packages on a system, it fails with an error such as th…
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Oracle Linux Inconsistent swappiness value with cgroup "memory.swappiness"APPLIES TO: Linux OS – Version Oracle Linux 8 Linux x86_64 SYMPTOMS: OL8 instance swap upto 2GB even though the kernel parameter "vm.swappiness " is set to 1. NOTE – vm.…
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Oracle Cloud Agent Installation Fails With Error"unpacking of archive failed on file <file name>"Applies To: Oracle Cloud Infrastructure Oracle Linux x86-64 Symptoms Oracle Cloud Agent installation Fails on OCI Centos Instance with error: Transaction Summary Install…
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OCI: Getting Error "Curl error (6): Could not resolve host" While Running "yum update"Applies to: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux x86-64 6 and later Symptoms Getting errors when running yum update: # yum update -y Oracle L…
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OCI: How to Force Reboot a Linux Instance Using AnsibleApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal Ansible is being used to manage Linux instances. To reboot the instances, the ansible r…
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OCI: systemctl status rc-local.service Main Process Exited code=exited status=203 EXEC.Applies to Oracle Cloud Infrastructure - Version N/A and later Linux OS - Version Oracle Linux 7.0 to Oracle Linux 9.3 [Release OL7 to OL9U3] Linux x86-64 Symptoms Faile…
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How to Easily Check I/O Usage by Process in LinuxApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Goal Linux systems do not generally log past I/O activity per process. It is however quite s…
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Oracle Linux 7: How to Change Current UEK Kernel Release To a Different UEK ReleaseApplies To: Oracle Cloud Infrastructure - Version N/A and later Oracle Linux x86-64 - version 7 Goal: Oracle Linux 7 was distributed in its 1st release 7.0 with kernel U…
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OCI: FTP Connection Fails with "Login failed" When the User's Shell is Set to "nologin"Applies to: Oracle Cloud Infrastructure Linux x86-64 Symptoms: When trying to connect to an account via FTP, the connection fails with the “Login failed” error: Trying 1…
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OCI : iSCSI Block Volumes Not Attached During BootApplies to: Oracle Cloud Infrastructure Oracle Linux - Version 7 and later Symptoms iSCSI block volumes are not detected during system boot. There are no active iSCSI se…
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OCI: Unable to Connect to Instance using Putty or WinSCPApplies to: Oracle Cloud Infrastructure - Version N/A and later Linux x86-64 Symptoms Unable to connect to an instance using Putty or WinSCP. While SSH from the Windows …
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OSMH: Software Source Sync failed with error "Failed writing received data to disk/application"Attempting to perform an OS Management Hub (OSMH) Software Source Sync fails with errors such as "Download failed: Curl error (23): Failed writing received data to disk/…