tentarun

Run commands on multiple machines.

Examples

Run a command on multiple hosts.

With a username and password:

tentarun -u username -p password -h host1,host2,host3 "tail /var/log/nginx/access.log"
tentarun -p password -h host1,host2,host3 "tail /var/log/nginx/access.log"

With a username and keyfile

tentarun -u username -k keyfile -h host1,host2,host3 "tail /var/log/nginx/access.log"
tentarun -k keyfile -h host1,host2,host3 "tail /var/log/nginx/access.log"

Pass environment variables

tentarun -e "FOO=bar BAR=foo" -h host1,host2,host3 "echo $FOO"

If you want to return the server name with the output pass -v.

If you want to return json output of the following format specify the -j flag:

    [
      {
        "hostname": "host1",
        "output": "output1"
      }
    ]

Uses

• Combine outputs of multiple machines and and parse it using local tools.
• Get metrics on multiple machines.

Credits

• http://kukuruku.co/hub/golang/ssh-commands-execution-on-hundreds-of-servers-via-go
• http://golang-basic.blogspot.com/2014/06/step-by-step-guide-to-ssh-using-go.html

The MIT License (MIT)

Copyright (c) 2015 Abhi Yerra abhi@berkeley.edu

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.