ski - Sascha Knows It

Execute commands or collect informations on multiple servers in parallel.

$ ski -h

Usage: ski [options...] matchers...
Options:
-c, --command   Execute command and return result
-s, --script    Execute script and return result
-t, --template  Template to be used to transform the output
-j, --job       Execute job specified in file
-n, --no-color  Print errors without colors
-p, --pretty    Pretty print output as a table
-w, --width     Width of output column in characters
-h, --help      This help text
-v, --version   Show version number

Prerequisites

You'll need to add ORBIT_HOME first to your profile:

$ export ORBIT_HOME=/path/to/orbit

Then setup the SSH agent for passwordless authentication:

$ ssh-add /path/to/key

Installation

Download the latest version from the release page and add the executable to your PATH.

Usage

Execute shell commands:

$ ski -c 'echo Greetings from $PACKAGE_NAME' mars pluto

Greetings from Mars
Greetings from Pluto

Execute shell scripts:

$ ski -s greet.sh mars pluto

Execute SQL commands:

$ ski -c 'SELECT * FROM DUAL' db

D
-
X

Execute SQL scripts:

$ ski -s dummy.sql db

Pretty table output:

$ ski -p -c env localhost

+-----+-----------+--------+----------------+------+--------------------------------------------------------+
|                                          ski -p -c env localhost                                          |
+-----+-----------+--------+----------------+------+--------------------------------------------------------+
| NR. | ID        | TYPE   | CONNECTION     | NAME | OUTPUT                                                 |
+-----+-----------+--------+----------------+------+--------------------------------------------------------+
|  1. | localhost | server | root@localhost | Host | SSH_CONNECTION=127.0.0.1 49154 127.0.0.1 22            |
|     |           |        |                |      | USER=root                                              |
|     |           |        |                |      | PWD=/root                                              |
|     |           |        |                |      | HOME=/root                                             |
|     |           |        |                |      | SSH_CLIENT=127.0.0.1 49154 22                          |
|     |           |        |                |      | MAIL=/var/mail/root                                    |
|     |           |        |                |      | SHELL=/bin/bash                                        |
|     |           |        |                |      | SHLVL=1                                                |
|     |           |        |                |      | LOGNAME=root                                           |
|     |           |        |                |      | PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin |
|     |           |        |                |      | _=/usr/bin/env                                         |
+-----+-----------+--------+----------------+------+--------------------------------------------------------+

Templates

Execute a shell or SQL command or script and convert the output based on a TextFSM template.

$ ski -s vparams.sql -t vparams db

The SQL script could look like this:

SET PAGESIZE 0
SET NEWPAGE 0
SET SPACE 0
SET LINESIZE 18000
SET WRAP OFF
SET FEEDBACK OFF
SET ECHO OFF
SET VERIFY OFF
SET HEADING OFF
SET TAB OFF
SET COLSEP ' , '

SELECT NUM, NAME, VALUE FROM V$PARAMETER WHERE NUM IN (526, 530);

The template file could look like this:

$ cat $ORBIT_HOME/templates/vparams.textfsm

Value Num (\d+)
Value Name (\S*)
Value Value (\S*)

Start
  ^ *${Num}[ |,]*${Name}[ |,]*${Value} -> Record

Jobs

Bundle command-line arguments to a job to save the report output.

$ ski -j vparams

The job file could look like this:

$ cat $ORBIT_HOME/jobs/vparams.skijob

-s vparam.sql -t vparam db

The report result could look like this:

$ cat $ORBIT_HOME/reports/vparams/1531410936.skirep

1531410936
[["Num", "int"], ["Name", "string"], ["Value", "string"]]
["db","Operativ DB",true,["526", "optimizer_adaptive_plans", "FALSE"]]
["db","Operativ DB",true,["530", "optimizer_adaptive_statistics", "FALSE"]]

Development

Clone the repo:

$ git clone https://github.com/katzer/ski.git && cd ski/

Install the dependencies:

$ bundle

And then execute:

$ rake compile

To compile the sources locally for the host machine only:

$ MRUBY_CLI_LOCAL=1 rake compile

You'll be able to find the binaries in the following directories:

• Linux (64-bit Musl): build/x86_64-alpine-linux-musl/bin/ski
• Linux (64-bit GNU): build/x86_64-pc-linux-gnu/bin/ski
• Linux (64-bit, for old distros): build/x86_64-pc-linux-gnu-glibc-2.9/bin/ski
• OS X (64-bit): build/x86_64-apple-darwin17/bin/ski
• Windows (64-bit): build/x86_64-w64-mingw32/bin/ski
• Host: build/host/bin/ski

For the complete list of build tasks:

$ rake -T

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/katzer/ski.

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

License

The code is available as open source under the terms of the Apache 2.0 License.

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