EVMOS node monitoring tool

To monitor you node your should have installed and configured: On node server:

EVMOS node which should be configured (correct moniker, validator key, network ports setup)
Telegraf agent
mon_evmos scripts set

On monitoring server:

It is possible to install the software on the node server instance. Hovewer, it is better to move it to standalone instance with opened web access to watch it from browser at any location.

To use our free monitoring servise on pro-nodes.com:

just go to the section Installation on a node and follow the installation process.

Advantages of using our free service:

Our monitoring service is working on dedicated server (24/7 online)
No need to install database (InfluxDB)
No need to install and configure Grafana Dashboard
On Grafana dashboard you will find all necessary metrics of your node (we use this monitoring service by ourselves, so we've configured dashboard properly)

Monitoring server parameters to connect PRO-NODES.com

Param	Value
URL	http://pro-nodes.com:8086
InfluxDB Details
database	evmosmetricsdb
username	metrics
password	password

The following steps will guide you through the setup process:

Monitoring server installation

InfluxDB

Install:

wget -qO- https://repos.influxdata.com/influxdb.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/influxdb.gpg > /dev/null
export DISTRIB_ID=$(lsb_release -si); export DISTRIB_CODENAME=$(lsb_release -sc)
echo "deb [signed-by=/etc/apt/trusted.gpg.d/influxdb.gpg] https://repos.influxdata.com/${DISTRIB_ID,,} ${DISTRIB_CODENAME} stable" | sudo tee /etc/apt/sources.list.d/influxdb.list > /dev/null

sudo apt update && sudo apt install influxdb

sudo systemctl enable --now influxdb

sudo systemctl start influxdb

sudo systemctl status influxdb

Setup database (change the passwords given in the example on more secure ones):

influx
> create database evmosmetricsdb
> create user metrics with password 'password'
> grant WRITE on evmosmetricsdb to metrics
> create user grafana with password 'other_password'
> grant READ on evmosmetricsdb to grafana

Keep database user and password in order to use it later for agent configuration. Write it.

In the case of using standalone instance for monitoring staff, you should know your node external ip address (you can know it by command curl ifconfig.me). In the case of installation on the same instance, just use localhost or 127.0.0.1

Grafana

Install:

wget -q -O - https://packages.grafana.com/gpg.key | sudo apt-key add -
sudo add-apt-repository "deb https://packages.grafana.com/oss/deb stable main"

sudo apt update -y
sudo apt install grafana -y

sudo systemctl daemon-reload

sudo systemctl enable --now grafana-server
sudo systemctl start grafana-server

# verify the status of the Grafana service with the following command:
sudo systemctl status grafana-server

Configuration:

Follow YOUR_MONITORING_SERVER_IP:3000 to setup grafana dashboard. The following steps are performed in the graphical interface of grafana.

Change default password for grafana user admin/admin on safer one

Add data source InfluxDB with the following settings:

Param	Value
HTTP
URL	http://localhost:8086
InfluxDB Details
Database	evmosmetricsdb
User	grafana

Save datasource settings

Import json file from this repo and save your dashboard.

Installation on a node

By fast installation script

You can use fast installation script IMPORTANT: You sholud to run the script under the user where it is installed Evmos node.

Don't use sudo if EVMOS-user is not a root

wget https://raw.githubusercontent.com/shurinov/mon_evmos/main/install.sh
chmod +x install.sh
./install.sh

It will install telegraf agent, clone project repo and extract your node data as MONIKER, VALOPER ADDR, RPC PORT. You should answer some questions about your monitoring service from part Monitoring server installation

Manual installation

Install telegraf

sudo apt update
sudo apt -y install curl jq bc

# install telegraf
sudo cat <<EOF | sudo tee /etc/apt/sources.list.d/influxdata.list
deb https://repos.influxdata.com/ubuntu bionic stable
EOF
sudo curl -sL https://repos.influxdata.com/influxdb.key | sudo apt-key add -

sudo apt update
sudo apt -y install telegraf

sudo systemctl enable --now telegraf
sudo systemctl is-enabled telegraf

# make the telegraf user sudo and adm to be able to execute scripts as Evmos user
sudo adduser telegraf sudo
sudo adduser telegraf adm
sudo -- bash -c 'echo "telegraf ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers'

You can check telegram service status:

sudo systemctl status telegraf

Status can be not ok with default Telegraf's config. Next steps will fix it.

Clone this project repo and copy variable script template

git clone https://github.com/shurinov/mon_evmos.git
cd mon_evmos
cp mon_var_template.sh mon_var.sh
nano mon_var.sh

Insert your parameters to mor_var.sh:

full path to evmosd binary to COS_BIN_NAME ( check which evmosd)
node PRC port to COS_PORT_RPC ( check in file path_to_evmos_node_config/config/config.toml)
node validator address to COS_VALOPER ( like evmosvaloper********)

Save changes in mon_var.sh and enable execution permissions:

chmod +x monitor.sh mon_var.sh

Edit telegraf configuration

sudo mv /etc/telegraf/telegraf.conf /etc/telegraf/telegraf.conf.orig
sudo nano /etc/telegraf/telegraf.conf

Copy it to config and paste your server name (to do so it is convenient to use the node moniker):

# Global Agent Configuration
[agent]
  hostname = "YOUR_MONIKER/SERVER_NAME" # set this to a name you want to identify your node in the grafana dashboard
  flush_interval = "15s"
  interval = "15s"
# Input Plugins
[[inputs.cpu]]
  percpu = true
  totalcpu = true
  collect_cpu_time = false
  report_active = false
[[inputs.disk]]
  ignore_fs = ["devtmpfs", "devfs"]
[[inputs.io]]
[[inputs.mem]]
[[inputs.net]]
[[inputs.system]]
[[inputs.swap]]
[[inputs.netstat]]
[[inputs.diskio]]
# Output Plugin InfluxDB
[[outputs.influxdb]]
  database = "evmosmetricsdb"
  urls = [ "MONITORING_SERV_URL:PORT" ] # example http://yourownmonitoringnode:8086
  username = "DB_USERNAME" # your database username
  password = "DB_PASSWORD" # your database user's password
[[inputs.exec]]
  commands = ["sudo su -c EVMOS_BIN_NAME -s /bin/bash EVMOS_USER"] # change home and username to the useraccount your validator runs at
  interval = "15s"
  timeout = "5s"
  data_format = "influx"
  data_type = "integer""

Dashboard interface

Dashboard has main cosmos-based node information and common system metrics. There is a description in it.

Mon health

Complex parameter can show problem concerning receiving metrics from node. Normal value is "OK"

Sync status

Node catching_up parameter

Block height

Latest blockheight of node

Time since latest block

Time interval in seconds between taking the metric and node latest block time. Value greater 15s may indicate some kind of synchronization problem.

Peers

Number of connected peers

Jailed status

Validator jailed status.

Missed blocks

Number of missed blocks in 100 blocks running window. If the validator misses more than 50 blocks, it will end up in jail.

Bonded status

Validator stake bonded info

Voting power

Validator voting power. If the value of this parameter is zero, your node isn't in the active pool of validators

Delegated tokens

Number of delegated tokens

Version

Version of evmosd binary

Vali Rank

Your node stake rank

Active validator numbers

Total number of active validators

Other common system metrics: CPU/RAM/FS load, etc.

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