Zabbix stuff for Cosmos Nodes

WARNiNG: This is still very much in development and i have not yet created most of the documentation to get up and running. Assuming you are proficient in Zabbix somewhat, you should be able to get these working. You will need to add macros etc for some of the functionality. Just ask if there is any questions.

I have developed using Zabbix 6.0 server/gui and zabbix-agen2. But should work on any version above 5 i think.

Requires:

• API and RPC exposed for localhost. Calls will be made to these services from zabbix-agent2. Refer to the zab.userparameters.cosmos.conf file for info on what calls are made to the API and RPC.

This is a collection of instructions, configurations and templates to integrate Zabbix monitoring with standard Cosmos Nodes running.

Configurations are based on Ubuntu 20.04 but should work on most Linux distributions.

We will be using Zabbix version 5.4 repository.

Add repository and update apt:

wget https://repo.zabbix.com/zabbix/5.4/ubuntu/pool/main/z/zabbix-release/zabbix-release_5.4-1+ubuntu20.04_all.deb
sudo dpkg -i zabbix-release_5.4-1+ubuntu20.04_all.deb && sudo apt update
rm -rf zabbix-release_5.4-1+ubuntu20.04_all.deb

Install zabbix-agent2 with apt:

sudo apt install zabbix-agent2 -y

Note: if you're running Ubuntu 22.04+, you'll also need to install libssl1.1:

echo "deb http://security.ubuntu.com/ubuntu impish-security main" | sudo tee /etc/apt/sources.list.d/impish-security.list
sudo apt update
sudo apt install libssl1.1 zabbix-agent2 -y

Edit the zabbix-agen2.conf

Set a variable with your server address:

SERVER=<your-server-address>

Inject server address into config with sed

sudo sed -i 's/Server=127.0.0.1/Server='"${SERVER}"'/g' /etc/zabbix/zabbix_agent2.conf

curl config file from repo

sudo curl -o /etc/zabbix/zabbix_agent2.d/zab.userparameters.cosmos.conf https://raw.githubusercontent.com/gh0stdotexe/cosmozab/main/zabbix_agent2.d/zab.userparameters.cosmos.conf

Update UFW for Zabbix port

sudo ufw allow from $SERVER to any port 10050

Enable and restart agent

sudo systemctl daemon-reload && sudo systemctl enable zabbix-agent2
sudo systemctl restart zabbix-agent2
journalctl -u zabbix-agent2 -f

Disable old services:

sudo systemctl disable node_exporter
sudo systemctl disable prometheus

Close prometheus ports:

sudo ufw status numbered

# delete both 9093 ports from list (example #'s below)

sudo ufw delete #4
sudo ufw delete #9