[Junos/Juniper] EX4500 FPC X PEM X is not supported

FPC X PEM X is not supported This message is most commonly associated with having one power supply that is front exhaust and another that is rear exhaust. What’s not in Juniper documentation is that this message is also associated with power supplies made by different manufacturers. To avoid this message use power supplies from […]

[EFI/UEFI/Linux] Replace a EFI boot partition

Create an EFI partition on the boot disk using gdisk. Where it exists on the disk doesn’t matter. The partition should be at least 100MB but >200MB is recommended. It is critical that the partition type is Boot Partition (type ef00). Create a filesystem on that partition. It MUST be vfat type 32. A regular vfat format […]

[Dovecot] master: Error: service(config): Initial status notification not received in 30 seconds, killing the process

If you’re running a very large dovecot config that takes a long time to load and dovecot won’t start you’re going to see this error: master: Error: service(config): Initial status notification not received in 30 seconds, killing the process In our case we have many certificates to load from the SNI configs. You’ll also see […]

[Active Directory/SSSD] [sssd[ldap_child[xxxxx]]]: Failed to initialize credentials using keytab [MEMORY:/etc/krb5.keytab]: Client ‘host/thisisaverylongdomainname.org@EXAMPLE’ not found in Kerberos database. Unable to create GSSAPI-encrypted LDAP connection.

This error can be caused by a few different reasons. In this particular case it’s a Centos 6 server connection to a Microsoft Active Directory 2016 DC. The short version of the story is that even though the FQDN has a valid key in the krb5 keytab it will only properly authenticate using the short […]

APC AP7862 Firmware Update Notes

With some firmware versions uploading new firmware via serial doesn’t work. The transfer will complete and the unit will reboot but it will still be running the old firmware. FTP transfer work well. Some older firmware can’t accept an FTP file transfer of the newest firmware. There is an older version packaged with the new […]


[Areca RAID] RAID configuration disappears

If you’ve had a previously configured Raid Set on an Areca RAID controller and it all of a sudden disappears it can sometimes be salvaged. In the RAID BIOS: Raid Set Function -> Rescue Raid You’re then prompted to “Enter the Operation Key.” This is ambiguous in the documentation and there’s also a mispelling for […]