Vyacheslav

How to disable advertising messages from Kyivstar

Once I got tired of receiving advertising SMS messages from Kyivstar, and since there is no information on how to manually disable them on the official website kyivstar.ua, I wrote to technical support in the chat:

The story about how Lifecell and Vodafone mocked the client

Once SMS was no longer delivered from one Lifecell number to all Vodafone numbers, while SMS was delivered to numbers of other mobile operators successfully.

Eaton UPS SNMP OIDs and MIBs

Once we installed an Eaton 9PX8KiPM rev01 + 9PXEBM240 rev02 UPS with a network card (Network MS) in one company, so I decided to write my template in Zabbix and, accordingly, I will post the SNMP OIDs that I used here.

Replacing a word in Linux files

Once, when replacing the network adapter in the server, I needed to change its old name in the netplan configuration, that is, replace several hundred words in the file, so I came up with the command:

Solution “mod_auth_file/1.0: unable to use world-readable AuthUserFile /etc/proftpd/ftpd.passwd”

Once when running proftpd with configured users in a file, I noticed the following error:

LACP Link Aggregation on Cisco Nexus 3064

I will give an example of configuring LAG (LACP) on a Cisco Nexus 3064.

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.