godo

Local and remote execution level 9000: go and do stuff.

godo is a very simple yet powerful tool that let's you specify a list of repetitive / useful commands you run on remote hosts or even locally, and run them with ease, without having to remember them or, even worse, login on each server and execute them manually.

Installation

Grab the latest release and simply run the executable:

~/projects/namshi/godo (master ✘)✭ ᐅ ./godo
NAME:
   godo - Stop SSHing into your server and run the same old commands. Automate. Automate. Automate.

USAGE:
   godo [global options] command [command options] [arguments...]

VERSION:
   X.Y.Z

AUTHOR(S): 
   
COMMANDS:
   help, h	Shows a list of commands or help for one command
   uptime	Retrieves uptime info for all machines
   slow-queries	mysql-log -n 10
   nginx-logs	sudo tail -10f /var/log/nginx/access.log
   
GLOBAL OPTIONS:
   --help, -h			show help
   --version, -v		print the version
   
~/projects/namshi/godo (master ✘)✭ ᐅ ./godo uptime
Executing 'uptime'
Command: 'uptime'
Executing on servers web, db

...
...

Usage

Create a godo.yml file and put it in your home directory:

servers:
  web:
    address: "xxx.xxx.xx.xxx:22"
    user:    "me"
  db:
    address: "xxx.xxx.xx.xxx:22"
    tunnel:  "tunnel.yourcompany.com:22"
    user:    "me"
groups:
  all: [web, db]
commands:
  uptime:
    target:       all
    exec:         "uptime"  
    description:  "Retrieves uptime info for all machines"  
  slow-queries:
    target: db
    exec: "mysql-log -n 10"
  nginx-logs:
    target: web
    exec: "sudo tail -10f /var/log/nginx/access.log"
  my-uptime:
    target:       local
    exec:         "uptime"  
    description:  "Retrieves uptime info for the current machine"  
hostfile: "/home/YOU/.ssh/known_hosts"
timeout: 2

There are a few sections to keep in mind:

• servers: this is a dictionary of servers on which you can run commands on
• groups: a list of grouped servers (ie. you might want to group by role, AWS zone, etc)
• commands: the commands are the actual remote commands you would be executing on the servers, they have a target (which can be a server or a group), the command that you would execute (exec) and an optional description (which is printed when you do godo help or godo)
• hostfile: you can omit it, it's used not to always ask you to trust SSH host

Godo will try to read the godo.yml configuration file from 3 different directories:

• your home
• the current directory
• the directory from which the godo executable runs

but you can also specify the path to a different configuration file with the -c or --config flags:

godo -c ./../my-config.yml mysql-log

Sometimes, though, you might want to run a command that you usually execute on some servers on a different server, and you can do it by simply specifying it from the command line:

godo uptime @ db

# or

godo uptime@db

Godo provides some special groups:

• all, represents all servers, so you can always run something like godo uptime @ all
• local, which references the current machine, so you will be running the command locally (godo uptime @ local)

Additional documentation

You can run the docs through godoc -http=:6060 -path=..

Gotchas

Currently all servers need to be in your known_hosts file (ie. you have to have SSHed into them at least once before using them with godo).

Compiling

Alternatively, you can run and compile godo on your own machine with a simple go build -o godo main.go.

At the same time, we provide a simple docker container to run and compile it so that you don't have to go to crazy if you don't have Go running on your system:

git clone https://github.com/namshi/godo.git

cd godo

docker-compose run godo gox --output=build/{{.OS}}_{{.Arch}}/{{.Dir}}

./godo

The above command will compile the godo executables (for various platforms) in the build folder.

We use a simple makefile to create new releases and yoou can probably do the same: just run make in the root of the repo and check the build folder. This requires that docker and docker-compose are installed on your system.