EVE-NG c8000v is slow in response

 

If the c8000v CLI is slow to reply or is acting sluggish, then go in the lab to "Status" and disable "KSM status"

EVE-NG Export config

 username cisco priv 15 secret 15

line con 0

priv level 15

EVE-NG upgrade/reinstall manually

export LANG=C.UTF-8

export LC_ALL=C.UTF-8

cd /root

cp /opt/unetlab/evedb.gz /root

apt-mark hold ifupdown

systemctl stop mysql

rm -f /var/lib/dpkg/lock

export TERM=xterm

apt-get --purge autoremove $(dpkg -l | grep 'mysql' | awk '{print $2}')

rm -rf /var/lib/mysql

rm -rf /etc/mysql

rm -rf /var/lib/apt/lists/*

apt update

apt install eve-ng-pro

If it cannot find the package, do:

https://gist.githubusercontent.com/nichham2/439feada8a2645f9627a2cdf246feba8/raw/ce67ab65aee8645e4f969bd7b65cd2435d41ce60/sources.list

put contents in /etc/apt/sources.list

Add 

deb [arch=amd64] http://www.eve-ng.net/jammy jammy main

to that file

apt clean
apt update
apt install eve-ng-pro
apt-mark unhold ifupdown
reboot
cd /opt/unetlab/
mv evedb.gz evedb.fresh
cp /root/evedb.gz /opt/unetlab/
unl_wrapper -a restoredb
reboot
dpkg -l eve-ng-pro

YAML Files for ESP32

 Gree Versati III

https://gist.github.com/slanckma/3bad4ff49545488a3719766bdf0cdc76

TUF-2000M Water flow sensor

https://gist.github.com/slanckma/78c22fbb39e974607e3f3dc83933aaba

Homey Dongle integration in HA

https://gist.github.com/slanckma/cd979360bce88118ffde4503363dd14a

Athom Garage door opener

https://gist.github.com/slanckma/37030a51a75202c320205b0cbc68277d

online video m3u8 download

 
Chrome -> dev tools -> network -> filter m3u8

Copy player.js m3u8 URL to VLC -> File -> Open Network -> Stream Output -> Settings

Name and mp4

Click OK and wait for timebar to complete.

Home Assistant Gree Versati III modbus ESP32

 

Versati III has an interface that communicates via the Modbus software protocol over RS-485 (physical layer standard). RS-485 can between -7 and +12V.

This needs to be converted to TTL, Transistor-Transistor Logic, which operates at low voltages. TTL can be read by ESP32 (not RS-485)

Based on 

https://github.com/peca2345/ESPHome-modbus-heatpump-Gree-Versati-III/blob/main/README.md

Wiring Diagram

Versati_Modbus----RS485--DollatekModule--TTL----ESP32

Hardware

ESP32 NodeMCU Module USB Type-C ESP32 Development Board Dual-Core 2.4GHz WiFi + Bluetooth CH340C for Arduino
https://www.amazon.com.be/dp/B0D8VN3J77?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

Pinout

https://lastminuteengineers.com/esp32-pinout-reference/

Note that the pinout can be differently ordered.

DollaTek 5 x 5V MAX485 / RS485 TTL Module to RS-485 MCU Development Board

https://www.amazon.com.be/dp/B07DK4QG6H?ref=ppx_yo2ov_dt_b_fed_asin_title

A & B are the connector for RS-485.

DI, DE, RE, RO are the connectors for TTL.

Good article explaining TTL-RS485

https://vault.nimc.gov.ng/blog/esp32-rs485-ttl-converter-guide-1764801490#:~:text=Hey%20guys!,expand%20your%20ESP32's%20communication%20horizons!

Azure

 

Azure has several hierarchical levels.

From a technical perspective, the order is (highest first):

Subscription (PROD, DEV, ...).

Resource Group (grouping everything related to a service , like firewall, servers, ...)

Inside Resource Group we can have

- VMs 

- interfaces

- disks

-Virtual Networks

    - a VNET contains a big subnet which can then be split into smaller subnets.

    - Peering between VNETs

-  A routing table 

 - Network Security Group (Rules inbound outbound)

- NAT Gateway

- IP addresses