CLI - Bonfire, Querying Graylog from a CLI – Articles

Learn how to query your logs from the Bonfire command line tool.

Bonfire is an open-source command line interface to query Graylog searches via the REST API. It emulates the experience of using tail on a local file and adds other valuable options.

For all of these examples, you will have to replace <your_cluster>.logs.ovh.com with your assigned endpoint address. This information is on the email you received when you created your Logs Data Platform account or on the Logs Data Platform home page in the OVHcloud Control Panel. Similarly, you will have to replace [code]<logs-username>[/code] with the user you used to connect to Graylog.

Requirements

Instructions

Install

$ pip install --user bonfire

tail -f

$ bonfire -h "<your_cluster>.logs.ovh.com" --port 443 --endpoint "/api" -u "<your_ldp_username>" --tls -f
Enter password for <logs-username>@<your_cluster>.logs.ovh.com/api:443:
Please select a stream to query:
0: Stream 'My stream' (id: 55210a04e4b09e9fa4fa0209)
Enter stream number: [0]:

Password management

Typing your password can be avoided by using the -k switch that will store your password using the python keyring, this will store your password in your Desktop keyring system.

Config file

To avoid repeating argument on the command line, you can create a config file (./bonfire.cfg or ~/.bonfire.cfg) to store where you want to connect:

[node:default]
host=<your_cluster>.logs.ovh.com
endpoint=/api
username=<your_ldp_username>
tls=True
port=443
default_stream=<your_graylog_stream_id>

You can define other named nodes and call them with the --node switch.

[node:sadev]
host=<your_cluster>.logs.ovh.com
enpoint=/api
username=<your_ldp_username>
tls=True
port=443
default_stream=<your_graylog_stream_id>

You can now call named node sadev:

$ bonfire --node sadev -k
 NOTICE  [2015-07-27 12:11:38.13] [2015-07-27 10:11:37.137253Z][9a9b9759-60f5-4609-88c2-e809b5a361a8] search app.preprod.containers-ovh.io # source:172.17.42.1; facility:gelf-rb; line:; module:
 NOTICE  [2015-07-27 12:11:38.14] [2015-07-27 10:11:37.137610Z][9a9b9759-60f5-4609-88c2-e809b5a361a8] bash: dig: command not found # source:172.17.42.1; facility:gelf-rb; line:; module:
 NOTICE  [2015-07-27 12:11:38.14] [2015-07-27 10:11:37.173477Z][9a9b9759-60f5-4609-88c2-e809b5a361a8] 2015-07-27 10:11:37 URL:http://proof.ovh.net/ [2272/2272] -> "/dev/null" [1] # source:172.17.42.1; facility:gelf-rb; line:; module:
 NOTICE  [2015-07-27 12:11:38.14] [2015-07-27 10:11:37.230451Z][08bce56b-9e85-4daa-9c8d-5b39c0d75d69] nameserver 213.186.33.99 # source:172.17.42.1; facility:gelf-rb; line:; module:
 NOTICE  [2015-07-27 12:11:38.14] [2015-07-27 10:11:37.230451Z][08bce56b-9e85-4daa-9c8d-5b39c0d75d69] search app.preprod.containers-ovh.io # source:172.17.42.1; facility:gelf-rb; line:; module:
 NOTICE  [2015-07-27 12:11:38.14] [2015-07-27 10:11:37.230973Z][08bce56b-9e85-4daa-9c8d-5b39c0d75d69] bash: dig: command not found # source:172.17.42.1; facility:gelf-rb; line:; module:
 INFO    [2015-07-27 12:11:38.38] becfb0408cde # source:%{host}; facility:gelf-rb; line:; module:
 INFO    [2015-07-27 12:11:42.29] 58d24d1cb8e3 # source:%{host}; facility:gelf-rb; line:; module:
 INFO    [2015-07-27 12:11:43.38] becfb0408cde # source:%{host}; facility:gelf-rb; line:; module:
 WARNING [2015-07-27 12:11:44.66] libceph: mon0 10.99.176.46:6789 socket closed (con state CONNECTING) # source:172.17.42.1; facility:gelf-rb; line:; module:

Note that the listing will contain only your logs.

Stored queries

You can define named queries and call them from the command line.

You can index some logs first by using the following curl command. Don't forget to replace <YOUR-WRITE-TOKEN> with the X-OVH-TOKEN of your stream and <YOUR-CLUSTER> with the address of your cluster.

$ ubuntu@server:~$ echo -e '{"version":"1.1",  "_X-OVH-TOKEN":"<YOUR-WRITE-TOKEN>", "host": "example.org", "short_message": "A short message that helps you identify what is going on", "full_message": "Backtrace here\n\nmore stuff", "level": 1, "_user_id": 9001, "_some_info": "foo", "some_metric_num": 42.0 }\0' | \
openssl s_client -quiet -no_ign_eof -connect <YOUR-CLUSTER>.logs.ovh.com:12202

Use this command multiple times to generate multiple logs.

Add the following to your previous configuration file .bonfire.cfg:

[query:ldp]
query=user_id:9001 AND some_metric_num:>40
limit=20

Here is how you call bonfire with the ldp query.

$ bonfire :ldp
Enter password for <USERNAME>@<YOUR-CLUSTER>.logs.ovh.com:443/api:
1[2024-08-05 18:56:40.81] A short message that helps you identify what is going on # source:example.org; facility:; line:; module:
1[2024-08-05 18:56:42.30] A short message that helps you identify what is going on # source:example.org; facility:; line:; module:
1[2024-08-05 18:56:42.69] A short message that helps you identify what is going on # source:example.org; facility:; line:; module:
1[2024-08-05 18:56:43.62] A short message that helps you identify what is going on # source:example.org; facility:; line:; module:
1[2024-08-05 18:56:44.69] A short message that helps you identify what is going on # source:example.org; facility:; line:; module:
1[2024-08-05 18:56:44.67] A short message that helps you identify what is going on # source:example.org; facility:; line:; module:
1[2024-08-05 18:56:45.70] A short message that helps you identify what is going on # source:example.org; facility:; line:; module:

Parametric queries

You can also define queries with parameters and define parameters from the command line.

$ ubuntu@server:~$ echo -e '{"version":"1.1",  "_X-OVH-TOKEN":"<YOUR-WRITE-TOKEN>", "host": "example.org", "short_message": "A short message that helps you identify what is going on", "full_message": "Backtrace here\n\nmore stuff", "level": 1, "_user_id": 9001, "_some_info": "foo", "some_metric_num": 42.0 }\0' | \
openssl s_client -quiet -no_ign_eof -connect <YOUR-CLUSTER>.logs.ovh.com:12202

Use this command multiple times to generate multiple logs.

If you want to use a parametric query user_id for a field named user_id, you can use the following form for your query in your .bonfire.cfg:

[query:user_id]
query=user_id:"${user_id}"
fields=short_message,user_id

Call

$ bonfire :user_id -x user_id=9001
Enter password for <USERNAME>@<YOUR-CLUSTER>.logs.ovh.com:443/api:
1[2024-08-05 19:22:13.56] A short message that helps you identify what is going on # short_message:; user_id:9001
1[2024-08-05 19:22:13.94] A short message that helps you identify what is going on # short_message:; user_id:9001
1[2024-08-05 19:22:14.29] A short message that helps you identify what is going on # short_message:; user_id:9001
1[2024-08-05 19:22:14.65] A short message that helps you identify what is going on # short_message:; user_id:9001
1[2024-08-05 19:22:15.70] A short message that helps you identify what is going on # short_message:; user_id:9001
1[2024-08-05 19:22:16.29] A short message that helps you identify what is going on # short_message:; user_id:9001
1[2024-08-05 19:22:16.74] A short message that helps you identify what is going on # short_message:; user_id:9001
1[2024-08-05 19:22:17.12] A short message that helps you identify what is going on # short_message:; user_id:9001
1[2024-08-05 19:22:17.56] A short message that helps you identify what is going on # short_message:; user_id:9001
1[2024-08-05 19:22:17.93] A short message that helps you identify what is going on # short_message:; user_id:9001

Go further

For more information and tutorials, please see our other Logs Data Platform support guides or explore the guides for other OVHcloud products and services.

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