deckarep/blade

a remote SSH command-line runner based on YAML recipe files.

blade's Issues

Blade recipe file should be TOML based

Move dependencies to vendor folder and perhaps use official Go dep tool

Consider using HCL instead of Yaml

HCL is HashiCorp’s DSL

Args for recipes should be able to be declared without a default value.

If you have a recipe with an arg, you should be able to define it without a default value. This means, that Blade should error out and let the user know that the arg MUST be supplied at the command line as a result.

This will allow you to define args without a bogus default value and causing an unnecessary situation where things can error out.

How to specify ssh key to use when connecting to a host?

I was playing around with bladerunner and I think I ran into an issue related with having multiple ssh keys in my ~/.ssh directory.

hostname.blade.toml

[Required]
  Commands = [
    "hostname"
  ]
  Hosts = ["165.227.192.60"]

In my .ssh/config file I have the following

Host 165.227.192.60
    Hostname 165.227.192.60
    Port 22
    User root
    IdentityFile /home/vendion/.ssh/some_ssh_key

Trying to run my hostname command results in a panic

bladerunner run ceph-test hostname --verbose
2017/09/14 19:22:31 Starting recipe: ceph-test.hostname
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x6118d2]

goroutine 6 [running]:
github.com/deckarep/blade/vendor/golang.org/x/crypto/ssh.(*connection).clientAuthenticate(0xc4200c2300, 0xc4200c8180, 0x0, 0xa)
	/home/vendion/gocode/src/github.com/deckarep/blade/vendor/golang.org/x/crypto/ssh/client_auth.go:54 +0x312
github.com/deckarep/blade/vendor/golang.org/x/crypto/ssh.(*connection).clientHandshake(0xc4200c2300, 0xc4200187c0, 0x11, 0xc4200c8180, 0x0, 0x0)
	/home/vendion/gocode/src/github.com/deckarep/blade/vendor/golang.org/x/crypto/ssh/client.go:112 +0x2d9
github.com/deckarep/blade/vendor/golang.org/x/crypto/ssh.NewClientConn(0x86fce0, 0xc42000e0d0, 0xc4200187c0, 0x11, 0xc4200c8000, 0x86fce0, 0xc42000e0d0, 0x0, 0x0, 0xc420030528, ...)
	/home/vendion/gocode/src/github.com/deckarep/blade/vendor/golang.org/x/crypto/ssh/client.go:82 +0xfd
github.com/deckarep/blade/vendor/golang.org/x/crypto/ssh.Dial(0x6fe513, 0x3, 0xc4200187c0, 0x11, 0xc4200c8000, 0xa587ebce15ee000, 0x59bb0f37, 0xc420030580)
	/home/vendion/gocode/src/github.com/deckarep/blade/vendor/golang.org/x/crypto/ssh/client.go:176 +0xb3
github.com/deckarep/blade/lib/ssh.startSSHSession(0xc4200c8000, 0xc4200187c0, 0x11, 0xc420044920, 0x1, 0x1, 0x0, 0x0)
	/home/vendion/gocode/src/github.com/deckarep/blade/lib/ssh/session.go:129 +0xe0
github.com/deckarep/blade/lib/ssh.executeSession.func1(0xc42000d300, 0xc42000d300)
	/home/vendion/gocode/src/github.com/deckarep/blade/lib/ssh/session.go:112 +0x57
github.com/deckarep/blade/vendor/github.com/cenkalti/backoff.RetryNotify(0xc42005e840, 0x86c180, 0xc42000d300, 0x70f990, 0x0, 0x663d19)
	/home/vendion/gocode/src/github.com/deckarep/blade/vendor/github.com/cenkalti/backoff/retry.go:37 +0x88
github.com/deckarep/blade/lib/ssh.executeSession(0xc4200c8000, 0xc4200187c0, 0x11, 0xc420044920, 0x1, 0x1)
	/home/vendion/gocode/src/github.com/deckarep/blade/lib/ssh/session.go:111 +0x132
github.com/deckarep/blade/lib/ssh.consumeAndLimitConcurrency.func1(0xc4200c8000, 0xc420044920, 0x1, 0x1, 0xc4200187c0, 0x11)
	/home/vendion/gocode/src/github.com/deckarep/blade/lib/ssh/utils.go:75 +0x7d
created by github.com/deckarep/blade/lib/ssh.consumeAndLimitConcurrency
	/home/vendion/gocode/src/github.com/deckarep/blade/lib/ssh/utils.go:70 +0xe3

For template variables consider using HIL

This is HashiCorp’s string interpolation language

Roadmap?

re: @deckarep

I would consider this tool very early stages alpha and barely usable at this point

Are there plans to continue development into a stable production ready release?
What would it take to mature this project?

Should there be a roadmap in the wiki or something?
It would help contributors with moving this project along

Design Blade TOML Files

Pick a new name, rewrite all documentation/README.md to abandon old stuffs.

Maybe call it Elle or eleven or simply 11? Too strange?

If you keep with Stranger Things theme do an Eleven Gopher.

Refactor SSH code out from main logic

Refactor code to use Cobra command.

Allow overriding user in Hosts

Current behavior:

• default user is root
• user can be overridden in [Overrides]
• User = "ubuntu" would override every ssh connection to connect as user ubuntu

Desired behavior:

• each host can override the user it connects as
• if there is no inline override, fall back to previous behavior

example recipe:

[Overrides]
  User = "admin"

[Required]
  Hosts = [
    "localhost:221",
    "root@localhost:222",
    "customuser@localhost:223",
    "localhost:224"
  ]

1st connection will connect as user admin
2nd connection will connect as user root
3rd connection will connect as user customuser
4th connection will connect as user admin