kubercert

README

kubercert

kubercert is the certbot for kubernetes

Installation

First install Go.

If you just want to install the binary to your current directory and don't care about the source code, run

GOBIN="$(pwd)" go install github.com/grengojbo/kubercert@latest

Screenshots

$ kubercert --help
Usage of kubercert

    kubercert [options] <host>...

Options:
  -expires duration
        error if cert expiration time is less than this; use 0 to disable (default 168h0m0s)
  -output mode
        output mode: text, json, or none (default text)
  -port int
        Port to look for TLS certificates on (default 443)
  -timeout duration
        time out on TCP dialing (default 5s)
  -verbose
        log connections

$ kubercert example.com
Host: example.com:443
Certs:
    Issuer: DigiCert SHA2 High Assurance Server CA
    Subject: www.example.org
    Not Before: Nov 3, 2015 12:00 AM
    Not After: Nov 28, 2018 12:00 PM
    DNS names: www.example.org example.com example.edu example.net example.org www.example.com www.example.edu www.example.net

$ kubercert -output json -verbose example.com
2018/11/04 19:19:15 connecting to example.com:443
[
  {
    "Host": "example.com",
    "Port": 443,
    "Certs": [
      {
        // snip many fields!
      }
    ]
  }
]

$ kubercert -output none -expires 24h example.com

$ kubercert -output none -expires 480h example.com
Problem running kubercert: cert for www.example.org expires too soon: 2018-11-28T12:00:00Z less than 480h0m0s away

Documentation

Overview

Copyright © 2022 Oleg Dolya

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.