KeepUp

The problem

I'm currently playing with some raspberry. Many of them will be placed somewhere and network connected. Those devices have many apps that are in a continous developing. Sometimes I need to make some changes in those machines.

How can I keep up them?

The solution

A script launched in a cronjob who read a remote CSV table with incremental changes. Each row is a pointer to a remote script, the service download and run the script.

The status is saved in a sqlite3 db.

A single machine is consider update from the keepup install date.

How It work

Install on the device

git clone https://github.com/pnicorelli/keepup.git
cd keepup
sudo bash install.sh

this will create a new user keepup with full SUDO access (like the pi user)

Then publish a CSV on REMOTE_LEDGER url with format:

TIMESTAMP,REFNAME,REFVERSION,SCRIPT_URL,SHA256,NOTES

where each field is:

TIMESTAMP : epoch of the script generation
REFNAME : a name for reference
REFVERSION: a reference for versioning
HTTP_URL : where you serve the script
SHA256 : checksum, return value of sha256sum yourscript.sh
NOTES : bla bla bla if needed

( -g SCRIPT_URL option output the row to be added on REMOTE_LEDGER file)

Then update REMOTE_LEDGER in /etc/keepup.cfg

Last but not least, add a cronjob who execute the keepup.

# /etc/crontab: system-wide crontab
# example to run keepup every hour

0 * 	* * *	keepup	/usr/local/bin/keepup

EXAMPLE

REMOTE_LEDGER.csv

1509193800,"UX","0.0.1","https://gitlab.com/p.nicorelli/test/raw/master/release.sh",245edcde7db69a17a2f24fa68da93605146ec2666fd2d453c87359df116ba200,"Initial Release"
1509194011,"UX","0.0.2","https://gitlab.com/p.nicorelli/test/raw/master/release_2.sh",93023c4904b5a00f14e34ce499e363c335753c0187db75bdee7c336e541025f3,"Add file"
1509210296,"WatchDog","1.0","https://gitlab.com/p.nicorelli/test/raw/master/xex_1.sh",ef9093dcf5dedb39174fc24863420f2343cc5bda0485e25d4d9b2219abf5c301,"New Software install"