Restart the nodes using an automated script - SkycoinProject/skywire GitHub Wiki

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Restart the nodes using an automated script

This guide assumes that you have read and understood the readme.md, downloaded the official images or installed Skywire from source and do every step exactly the way it is described. Misconduct will lead to an inability to connect and to potential reflashing. It is very important that there is no IP collision with your existing home router subnet. The default settings of the official images, as well as the router of the Skyminer, are using the 192.168.0.0/24 subnet.

Introduction
Requirements
Usage
Troubleshooting
Adjustments

Introduction

This guide will provide you with a script that restarts the secondary pi's + the manager all at once. All the steps are designed for usage with the official images but can be adjusted to work with any other startup scripts as well.

Requirements

official images/multiple pi's with static ip's
SSH/Putty to access the manager pi or access to the manager's web interface

Usage

Create the script

Change to home directory via cd ~. Now we need to create the script that will take care of the changes we want to apply.

Execute nano restart.sh to open an editor:

This is the content of the script that we are going to use. Copy and paste it into the editor you just opened.

#!/bin/bash
#This script schedules a reboot for the secondary pi's after 2 minutes
#It assumes that you previously changed the rebuild.sh scripts to start with a time delay that 
#is individual to each node (10 seconds rest in between nodes is sufficient)

#username
USERNAME=root
#reboot the secondary pi
HOSTS="192.168.0.3 192.168.0.4 192.168.0.5 192.168.0.6 192.168.0.7 192.168.0.8 192.168.0.9"
for HOSTNAME in ${HOSTS} ; do
    if ping -W5 -i0.5 -c 1 &> /dev/null
    then
        echo 1
	echo "no connection to host" ${HOSTNAME}
    else
	echo "ping received from" ${HOSTNAME}
        ssh ${USERNAME}@${HOSTNAME} "shutdown -r 2"
    fi
done

#reboot the manager itself
echo "Rebooting the manager now"
reboot

Save the file via ctrl+x and yes.

After that make the script executable via chmod +x restart.sh

Execute the script

Execute the script via ./restart.sh, you will be queried to enter the passwords for the root user one after another. The output should look like this:

executed

All the secondary pi's will now reboot after 2 minutes, the manager will reboot immediately. This will result in temporary unresponsive nodes connected to the manager, you need to wait a total of 3.5 minutes (210 seconds) until all pi's should be up again and connected to the manager.

Troubleshooting

Unable to connect to pi

If you happen to encounter the error message Read from socket failed: connection reset by peer

then you need need to apply the steps describe here

Adjustments

Adjust the script to work with other IPs

Change the following line

HOSTS="192.168.0.3 192.168.0.4 192.168.0.5 192.168.0.6 192.168.0.7 192.168.0.8 192.168.0.9"

HOSTS="IP_NODE_1 IP_NODE_2 IP_NODE_3 IP_NODE_4 IP_NODE_5 IP_NODE_6 IP_NODE_7 IP_NODE_8 IP_NODE_9"

where you have to replace IP_NODE_1 IP_NODE_2 etc. with the IPs of your nodes.

Keep in mind that the IPs are starting with your first node and not with the IP of the manager!

Adjust the script to work with a different user than root

Change the following line:

USERNAME = your_username

to the user you are using on the pi's. For raspberry pi that would be USERNAME=pi

Adjust the script to work on a raspberry pi with user pi

IP range of 192.168.0.3-9 is assumed.

#!/bin/bash
#This script schedules a reboot for the secondary pi's after 2 minutes
#It assumes that you previously changed the rebuild.sh scripts to start with a time delay that 
#is individual to each node (10 seconds rest in between nodes is sufficient)

#username
USERNAME=pi
#reboot the secondary pi
HOSTS="192.168.0.3 192.168.0.4 192.168.0.5 192.168.0.6 192.168.0.7 192.168.0.8 192.168.0.9"
for HOSTNAME in ${HOSTS} ; do
    if ping -W5 -i0.5 -c 1 &> /dev/null
    then
        echo 1
	echo "no connection to host" ${HOSTNAME}
    else
	echo "ping received from" ${HOSTNAME}
        ssh ${USERNAME}@${HOSTNAME} "sudo shutdown -r 2"
    fi
done

#reboot the manager itself
echo "Rebooting the manager now"
sudo reboot

The rest of the steps in the guide stay the same.

Restart the nodes using an automated script - SkycoinProject/skywire GitHub Wiki