poa-devops/docs/Blockchain-backup.md

Setup blockchain backup from a node

1. connect to the node as root.

2. clone this repository to root's home folder:

git clone https://github.com/poanetwork/poa-devops.git

3. make sure python (v2.6+ or v3.5+) is installed on the node.

4. install pip and/or upgrade it to the newest version:

apt-get install python-pip
pip install --upgrade pip

5. upgrade setuptools to the newest version:

pip install --upgrade setuptools

6. install boto and boto3 packages:

pip install boto boto3

7. install ansible:

pip install ansible

8. create group_vars/all file:

cp group_vars/all.example group_vars/all

and set the following variables:

• poa_role - node's role (one of bootnode, validator, moc, explorer, netstat)
• access_key - s3 access key
• secret_key - s3 secret key
• s3_bucket - s3 bucket name

you can ignore other variables in this file

9. create hosts file:

touch hosts

and set it to run backup on localhost:

[backup]
localhost

10. run playbook (still, do this on the node)

ansible-playbook -i hosts -c local site.yml

11. if all is well, setup a cronjob to run every hour:

crontab -e

append the following line:

30 * * * * /bin/bash /root/poa-devops/bkp-blockchain-cron.sh

12. configure logrotate to archive old log files. Create file /etc/cron.hourly/poa-devops-logrotate with the following content:

#!/bin/bash
/usr/sbin/logrotate /root/poa-devops/bkp-blockchain-logrotate.conf

and set permission to run it:

chmod 755 /etc/cron.hourly/poa-devops-logrotate