github.com/pabateman/dns-lookuper
130
DNS Lookuper is a simple utility that resolves your list of domain names into their addresses. It supports several output formats such as yaml, json, csv, and custom templates.
See the following artifacts:
Binary
curl -Lo dns-lookuper https://github.com/pabateman/dns-lookuper/releases/latest/download/dns-lookuper-linux-amd64
chmod +x dns-lookuper
mv dns-lookuper /usr/local/bin
Docker
VERSION=$(curl -sL https://api.github.com/repos/pabateman/dns-lookuper/releases/latest | grep tag_name | cut -d '"' -f 4)
docker pull pabateman/dns-lookuper:${VERSION}
Lookuper works with command line arguments as well as a configuration file.
The utility uses the concept of tasks. You can configure only one task through the command line, whereas through a configuration file, you can configure multiple tasks.
Example with command line:
$ dns-lookuper -f ./testdata/lists/1.lst -f ./testdata/lists/2.lst -o - -m all -r hosts
Console output:
cloudflare.com 104.16.133.229
cloudflare.com 104.16.132.229
cloudflare.com 2606:4700::6810:84e5
cloudflare.com 2606:4700::6810:85e5
google.com 173.194.220.138
google.com 173.194.220.102
google.com 173.194.220.100
google.com 173.194.220.101
google.com 173.194.220.113
google.com 173.194.220.139
google.com 2a00:1450:4010:c0e::8b
google.com 2a00:1450:4010:c0e::66
google.com 2a00:1450:4010:c0e::71
google.com 2a00:1450:4010:c0e::64
hashicorp.com 76.76.21.21
linked.in 108.174.10.24
linked.in 2620:109:c002::6cae:a18
releases.hashicorp.com 108.157.229.119
rpm.releases.hashicorp.com 3.164.230.2
rpm.releases.hashicorp.com 3.164.230.117
rpm.releases.hashicorp.com 3.164.230.48
rpm.releases.hashicorp.com 3.164.230.56
rpm.releases.hashicorp.com 2600:9000:25f7:d200:18:566b:ecc0:93a1
rpm.releases.hashicorp.com 2600:9000:25f7:a400:18:566b:ecc0:93a1
rpm.releases.hashicorp.com 2600:9000:25f7:ca00:18:566b:ecc0:93a1
rpm.releases.hashicorp.com 2600:9000:25f7:8c00:18:566b:ecc0:93a1
rpm.releases.hashicorp.com 2600:9000:25f7:0:18:566b:ecc0:93a1
rpm.releases.hashicorp.com 2600:9000:25f7:6e00:18:566b:ecc0:93a1
rpm.releases.hashicorp.com 2600:9000:25f7:9000:18:566b:ecc0:93a1
rpm.releases.hashicorp.com 2600:9000:25f7:8200:18:566b:ecc0:93a1
terraform.io 76.76.21.21
First, you need a config file:
tasks:
- files:
- ./../lists/1.lst
- ./../lists/2.lst
output: "-"
format: list
mode: ipv4
- files:
- ./../lists/1.lst
- ./../lists/2.lst
output: result_ipv6.txt
format: list
mode: ipv6
This example stored in testdata/configs/many.yaml.
$ dns-lookuper -c testdata/configs/many.yaml
The result of the execution will be console output:
104.16.132.229
104.16.133.229
108.157.229.119
108.174.10.24
173.194.222.100
173.194.222.101
173.194.222.102
173.194.222.113
173.194.222.138
173.194.222.139
18.165.140.122
18.165.140.50
18.165.140.52
18.165.140.56
76.76.21.21
Additionally, a file will be stored in testdata/output/result_ipv6.txt with the following content:
2600:9000:272c:3000:18:566b:ecc0:93a1
2600:9000:272c:4400:18:566b:ecc0:93a1
2600:9000:272c:4600:18:566b:ecc0:93a1
2600:9000:272c:4c00:18:566b:ecc0:93a1
2600:9000:272c:d200:18:566b:ecc0:93a1
2600:9000:272c:d600:18:566b:ecc0:93a1
2600:9000:272c:da00:18:566b:ecc0:93a1
2600:9000:272c:fc00:18:566b:ecc0:93a1
2606:4700::6810:84e5
2606:4700::6810:85e5
2620:109:c002::6cae:a18
2a00:1450:4010:c03::64
2a00:1450:4010:c03::65
2a00:1450:4010:c03::71
2a00:1450:4010:c03::8b
Important notice: with the configuration file, only one task is allowed to print to the console (/dev/stdout or /dev/stderr) by design purposes.
DNS Lookuper supports a daemon mode, in which the utility executes continuously at a specified interval (1 minute by default). The interval must be specified in Go duration format, e.g., 30s, 5m, 3h, 1d, 5y. Similar to oneshot mode, there is support for command line options or a configuration file.
Important notice: Daemon mode not supports console output (/dev/stdout or /dev/stderr) by design purposes.
Example with command line:
$ dns-lookuper -f ./testdata/lists/1.lst -f ./testdata/lists/2.lst -o testdata/output/result.txt -m all -r hosts -d -i 10s
As result of the execution a file will be stored in testdata/output/result.txt and it will be updated every 10 seconds.
Example with config file:
Config file:
settings:
lookupTimeout: 2
daemon:
enabled: true
interval: 30s
tasks:
- files:
- ../lists/1.lst
- ../lists/2.lst
output: ../output/daemonconfig.txt
format: yaml
Stored in testdata/configs/simple-daemon.yaml.
Try it:
$ dns-lookuper -c testdata/configs/simple-daemon.yaml
As result of the execution a file will be stored in testdata/output/daemonconfig.txt and it will be updated every 30 seconds.
DNS Lookuper supports several output formats, including:
Just simple list of IP addresses, example:
$ dns-lookuper -f testdata/lists/1.lst -r list
Output:
104.16.132.229
104.16.133.229
2606:4700::6810:84e5
2606:4700::6810:85e5
76.76.21.21
Classic /etc/hosts format, example:
$ dns-lookuper -f testdata/lists/1.lst -r hosts
Output:
104.16.133.229 cloudflare.com
104.16.132.229 cloudflare.com
2606:4700::6810:84e5 cloudflare.com
2606:4700::6810:85e5 cloudflare.com
76.76.21.21 hashicorp.com
76.76.21.21 terraform.io
A list of objects with the name as a string and adresses as a list:
$ dns-lookuper -f testdata/lists/1.lst -r json
Output:
[
{
"name": "cloudflare.com",
"addresses": [
"104.16.132.229",
"104.16.133.229",
"2606:4700::6810:84e5",
"2606:4700::6810:85e5"
]
},
{
"name": "hashicorp.com",
"addresses": [
"76.76.21.21"
]
},
{
"name": "terraform.io",
"addresses": [
"76.76.21.21"
]
}
Similar to JSON, but YAML:
$ dns-lookuper -f testdata/lists/1.lst -r json
Output:
- addresses:
- 104.16.133.229
- 104.16.132.229
- 2606:4700::6810:84e5
- 2606:4700::6810:85e5
name: cloudflare.com
- addresses:
- 76.76.21.21
name: hashicorp.com
- addresses:
- 76.76.21.21
name: terraform.io
A simple CSV file:
$ dns-lookuper -f testdata/lists/1.lst -r csv
Output:
name,address
cloudflare.com,104.16.132.229
cloudflare.com,104.16.133.229
cloudflare.com,2606:4700::6810:85e5
cloudflare.com,2606:4700::6810:84e5
hashicorp.com,76.76.21.21
terraform.io,76.76.21.21
Additionally, you can specify your own template for the lookup result for every task separately. The only available variables are {{host}} for the host and {{address}} for addresses:
$ dns-lookuper -f testdata/lists/1.lst -r template -t "there is {{host}} with address {{address}}"
Output:
there is cloudflare.com with address 104.16.132.229
there is cloudflare.com with address 104.16.133.229
there is cloudflare.com with address 2606:4700::6810:85e5
there is cloudflare.com with address 2606:4700::6810:84e5
there is hashicorp.com with address 76.76.21.21
there is terraform.io with address 76.76.21.21
docker pull pabateman/dns-lookuper