The unison script will help with synchronize the folders in multiple DC/Server, This script can be used for multiple directories as well.
This script will make sure no two nodes/servers in the same DC or same namespaces are not copying the code simultaneously(executing rsync when the other node is already doing it). Each executing server creates a lock which is read in a common space and delays/skip the entire execution. for the other node.
This guide is for unison script version 1.0.0
This unison script cli works only with the following requirement(s):
- unison tool(rpm) should be installed on servers
- A user with the same id across multiple server should exist which will be used to sync the folders/servers
- SSH port should be opened b/w servers
- A directory structure inbetween server with same user as directory owner
The following individuals have a material interest in the state of this module and must be directly notified whenever changes to the production (master) branch are made:
- Arun Rawat RawatArun65@gmail.com
And here goes the limitation(s):
unison scriptis created to sync folders in between multiple servers, its written in shell script and doesn't have any limitation till now.
The easiest way to install is - On your terminal run the following commands -
using git clone with https(no private key setup)
Navigate to the directory where you want to copy the script/folder
❯ git clone https://github.com/nurawat/unison.git
or using git clone with ssh
❯ git clone git@github.com:nurawat/unison.git
Update the Folders(if Required)
In the script navigate to directory_paths variable and update it with the folders that needs to be sync'd
you are good to go.
on your Linux based environment -- proper permissions needs to be provided in the usage.
Usage Guide:
sh syncScript.sh Options.
OPTIONS:
Unison Lock Folder Path e.g. /nfs_share
Server List - File which will have Entry for the DC
server.txt -
dc1=dc1_servers1.<domain>.com,dc1_servers2.<domain>.com
dc2=dc2_servers1.<domain>.com,dc2_servers2.<domain>.com
dc3=dc3_servers1.<domain>.com,dc3_servers2.<domain>.com
Update the Directory_Paths variable with the list of directories to Sync
directory_paths="/some/folder/path/
/some/folder/paths
/some/folder/pathss
mail_id="YOUR EMAIL ID"
To Change The Folders to Sync.
- Go to Script syncScript.sh
- Find the variable
directory_paths - Change the Values for the variables with folder path.
- You are good to go
You are run the following commands in order to run the script.
❯ syncScript.sh /nfs_path server_list
for help message
Usage:
syncScript.sh <COMMAND>
syncScript.sh [OPTIONS]
[INFO] - [INFORMATION]: Related to What the Script is Doing
[ERR] - [ERROR] - Mostly Because Script is Given Wrong Inputs
[END] - [END]: Script executing end
[SUCCESS] - [SUCCESS]: SUCCESS Alert
[FAILURE] - [FAILURE]: FAILURE Alert