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Cosmovisor ​

Cosmovisor is a process manager for Cosmos-SDK application binaries that monitors the governance module for incoming chain upgrade proposals.

If cosmovisor sees a proposal get approved, it can automatically download the new binary, stop the currently running binary, switch from the old binary to the new one, and finally restart the node with the new binary.

Cosmovisor allows you to download binaries ahead of time for chain upgrades, meaning that you can do zero (or close to zero) downtime chain upgrades. It's also useful if your timezone doesn't align well with a chain upgrade.

TIP

It's recommended to use either Cosmovisor or systemd to run your node.

Rather than having to do stressful DevOps tasks late at night, it's better if you can automate them away, and that's what Cosmovisor tries to do. It's wise to go through the cosmovisor setup instructions on testnet before running a full-node on mainnet.

Cosmovisor Setup ​

TIP

If you have not installed nibid, please install the corresponding version:

bash
curl -s https://get.nibiru.fi/@v1.0.0! | bash

WARNING

When using Cosmovisor, make sure that you do not have auto download of binaries on.

  1. Install Cosmovisor Follow these instructions to install Cosmovisor.

  2. Set up enviroment variables

    bash
    export DAEMON_NAME=nibid
export DAEMON_HOME=$HOME/.nibid

  3. Create required directories

    bash
    mkdir -p $DAEMON_HOME/cosmovisor/genesis/bin
mkdir -p $DAEMON_HOME/cosmovisor/upgrades

  4. Add the genesis version of the binary (currently it is v1.0.0 both for nibiru-testnet-1 and cataclysm-1 networks) to the cosmovisor directory. You can verify your binary location with which nibid command. For example:

    bash
    cp $(which nibid) $DAEMON_HOME/cosmovisor/genesis/bin

  5. Create the service for Cosmovisor

    bash
    sudo tee /etc/systemd/system/cosmovisor-nibiru.service<<EOF
[Unit]
Description=Cosmovisor for Nibiru Node
Requires=network-online.target
After=network-online.target

[Service]
Type=exec
User=<your_user>
Group=<your_user_group>
ExecStart=/home/<your_user>/go/bin/cosmovisor run start --home /home/<your_user>/.nibid
Restart=on-failure
RestartSec=3
Environment="DAEMON_NAME=nibid"
Environment="DAEMON_HOME=/home/<your_user>/.nibid"
Environment="DAEMON_ALLOW_DOWNLOAD_BINARIES=false"
Environment="DAEMON_RESTART_AFTER_UPGRADE=true"
Environment="DAEMON_LOG_BUFFER_SIZE=512"
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

    Enable the service:

    bash
    sudo systemctl daemon-reload
sudo systemctl enable cosmovisor-nibiru

    You can inspect the logs using journalctl.

    bash
    journalctl -fu cosmovisor-nibiru