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Classic mode variables: Style update #1659

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Merged
merged 3 commits into from
May 15, 2025
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Classic mode variables: Style update #1659

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36a7d7b
Classic mode variables: Style update
esmerel May 14, 2025
97ec4ea
Missed updating a language
esmerel May 14, 2025
ce94bc1
Update administration/configuring-fluent-bit/classic-mode/variables.md
esmerel May 15, 2025
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19 changes: 9 additions & 10 deletions administration/configuring-fluent-bit/classic-mode/variables.md
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Expand Up @@ -12,17 +12,19 @@ ${MY_VARIABLE}

When Fluent Bit starts, the configuration reader will detect any request for `${MY_VARIABLE}` and will try to resolve its value.

When Fluent Bit is running under systemd (using the official packages), environment variables can be set in the following files:
* `/etc/default/fluent-bit` (Debian based system)
* `/etc/sysconfig/fluent-bit` (Others)
When Fluent Bit is running under [`systemd`](https://systemd.io/) (using the official packages), environment
variables can be set in the following files:

These files are ignored if they do not exist.
- `/etc/default/fluent-bit` (Debian based system)
- `/etc/sysconfig/fluent-bit` (Others)

These files are ignored if they don't exist.

## Example

Create the following configuration file \(`fluent-bit.conf`\):

```text
```yaml
[SERVICE]
Flush 1
Daemon Off
Expand All @@ -40,10 +42,10 @@ Create the following configuration file \(`fluent-bit.conf`\):
Open a terminal and set the environment variable:

```bash
$ export MY_OUTPUT=stdout
export MY_OUTPUT=stdout
```

> The above command set the 'stdout' value to the variable `MY_OUTPUT`.
The previous command sets the `stdout` value to the variable `MY_OUTPUT`.

Run Fluent Bit with the recently created configuration file:

Expand All @@ -58,6 +60,3 @@ Fluent Bit v1.4.0
[2020/03/03 12:25:25] [ info] [engine] started
[0] cpu.local: [1491243925, {"cpu_p"=>1.750000, "user_p"=>1.750000, "system_p"=>0.000000, "cpu0.p_cpu"=>3.000000, "cpu0.p_user"=>2.000000, "cpu0.p_system"=>1.000000, "cpu1.p_cpu"=>0.000000, "cpu1.p_user"=>0.000000, "cpu1.p_system"=>0.000000, "cpu2.p_cpu"=>4.000000, "cpu2.p_user"=>4.000000, "cpu2.p_system"=>0.000000, "cpu3.p_cpu"=>1.000000, "cpu3.p_user"=>1.000000, "cpu3.p_system"=>0.000000}]
```

As you can see the service worked properly as the configuration was valid.