Experiencing the following behavior with RHEL/CentOS 7.2 and NFS? NFS folder mount hang and the following output can be observed in logs and dmesg : NFS: state manager: lease expired failed on NFSv4 server 0.0.0.0 with error 10082 NFS: nfs4_discover_server_trunking unhandled error -512. Exiting with error EIO nfsd: last server has exited, flushing export cache… Read More »
In some rare occasion, you may end up with an orphaned VM in your vCenter inventory where no “remove” option is available from the option menu. Beside doing the removal using the CLI, there is still a way that worked most of the time for me. 1. Browse to “VMs and Templates inventory” inside the… Read More »
If you are running both cPanel and have your own R1Soft server, there is a nice integration in cPanel that allow users to restore files, database or their whole account from this external backup source/destination. There are several steps involved for this, such as : 1. Enable control panel restore on the R1Soft server ;… Read More »
It is possible with Config Security Firewall (CSF) to open an inbound port from a specific source IP address. This is defined outside of the global configuration (csf.conf), within a dedicated config file. 1. Open the following file with your favorite text editor : /etc/csf/csf.allow 2. Follow this syntax to open a specific port for… Read More »
Having the following error when trying to add a new hypervisor to an existing cluster in VMware vCenter? A general system error occurred: Time out waiting on vpxa to start This is most likely happening with the ESXi version is greater than the ones supported by your currently running vCenter. Have a look at the… Read More »
Under some rare circumstances, you may require to change the default route metric. The first way of doing should be through the “ifcfg-ethX” configuration file by adding the “METRIC=” statement. However it has been found to be inefficient for me and had to apply it using “ip route” as followed : ip route del default… Read More »
If your Windows 10 system suddenly stopped booting and show the following error message : VOLMGRX INTERNAL ERROR It most likely mean that your software RAID volume has failed. It may indicate a hardware underlying issue, such as a failed drive or the mirror just broke and is no longer in sync. To find out,… Read More »
Encountered the following error during the Seafile installation process? Error: Failed to init ccnet database: Specified key was too long; max key length is 767 bytes Something went wrong while the installation script attempted to deploy the database. Normally, InnoDB has a limitation of 767 bytes and 1000 bytes for MyISAM. Creating the database with… Read More »
Experiencing the following issue trying to delete a domain in your cPanel account? The subdomain hostname_domain.tld does not correspond to domain.tld. Have a look if the domain isn’t listed in “Addon Domains” or “Alias”. If the domain show up in either of those category, try deleting from there first. In this case, it turned out… Read More »
As much as I love Windows Server 2016 compared to previous versions, there is nothing that annoy me more that the Server Manager opening when I logon. Fortunately, there is a way to disable it using Group Policy editor. NOTE : If you are not within a domain group environment (Active Directory), there is an… Read More »