IT Blog

Mellanox ConnectX errors “Could not join netdev: No space left on device”

Once after installing the Mellanox ConnectX-3 Pro EN / HP 544+QSFP (764284-B21) network adapter into the HPE DL380 Gen10 server, I encountered errors in the /var/log/syslog file:

Intel 700 Series Network Adapters Firmware Update

For example, I will update the firmware in the Intel XL710-QDA1 network adapter from version 6.01 (6.01) to 8.21 (8.15).

Intel i40e driver update

For example, I will take an Intel XL710-QDA1 QSFP+ network adapter and a couple more with an Intel chip, for example, HPE 562SFP+, I will install them in an HPE DL380 Gen10 server running Ubuntu Server 18.04.

Configuring DHCP Relay on Cisco Nexus 3064

For example, I will configure DHCPv4 Relay on Cisco N3K-C3064PQ-10GX. Initially, I configured this switch for L2, but some VLANs had to be configured as L3 and DHCPv4 Relay enabled.

Configuring Cisco N3K-C3064PQ-10GX

For example, I will configure the Cisco Nexus N3K-C3064PQ-10GX switch.

How to delete a profile on Odnoklassniki

To remove a page (profile) from the odnoklassniki.ru (ok.ru) social network, you must:

How to disable “New release available” email notifications on Ubuntu

Once I noticed that new servers running Ubuntu Server 18.04 operating systems periodically send email notifications:

Cisco Nexus 3064 Backup Script

I will give an example of a script for backing up the configuration of a Cisco Nexus 3064 and the like.

Configuring Jumbo Frame on Cisco Nexus 3064

I will give an example of increasing the MTU to 9216 bytes globally (for a specific interface it is impossible):

Solution Syntax error on line 80 of /etc/apache2/apache2.conf: DefaultRuntimeDir must be a valid directory, absolute or relative to ServerRoot

Once I wanted to see which MPM module is being used and executed the command: