Merge pull request #1558 from fluent/lynettemiles/sc-105722/update-installation-linux-debian-md-fluent

Updating Debian install for style and consistency

Author: esmerel

installation/linux/debian.md

@@ -1,35 +1,43 @@
 # Debian
 
-Fluent Bit is distributed as **fluent-bit** package and is available for the latest (and legacy) stable Debian systems: Bookworm and Bullseye.
+Fluent Bit is distributed as the `fluent-bit` package and is available for the latest
+stable CentOS system.
+
 The following architectures are supported
 
-* x86\_64
-* aarch64 / arm64v8
+- `x86_64`
+- `aarch64`
+- `arm64v8`
 
 ## Single line install
 
-A simple installation script is provided to be used for most Linux targets.
-This will always install the most recent version released.
+Fluent Bit provides an installation script to use for most Linux targets.
+This will always install the most recently released version.
 
-```bash
+```bash copy
 curl https://raw.githubusercontent.com/fluent/fluent-bit/master/install.sh | sh
 ```
 
-This is purely a convenience helper and should always be validated prior to use.
-The recommended secure deployment approach is to follow the instructions below.
+This is a convenience helper and should always be validated prior to use.
+The recommended secure deployment approach is to use the following instructions:
 
 ## Server GPG key
 
-The first step is to add our server GPG key to your keyring, on that way you can get our signed packages.
-Follow the official Debian wiki guidance: <https://wiki.debian.org/DebianRepository/UseThirdParty#OpenPGP\_Key\_distribution>
+The first step is to add the Fluent Bit server GPG key to your keyring to ensure
+you can get the correct signed packages.
 
-```bash
+Follow the official
+[Debian wiki guidance](https://wiki.debian.org/DebianRepository/UseThirdParty#OpenPGP_Key_distribution).
+
+```bash copy
 curl https://packages.fluentbit.io/fluentbit.key | gpg --dearmor > /usr/share/keyrings/fluentbit-keyring.gpg
 ```
 
 ### Updated key from March 2022
 
-From the 1.9.0 and 1.8.15 releases please note that the GPG key has been updated at [https://packages.fluentbit.io/fluentbit.key](https://packages.fluentbit.io/fluentbit.key) so ensure this new one is added.
+For the 1.9.0 and 1.8.15 and later releases, the
+[GPG key has been updated](https://packages.fluentbit.io/fluentbit.key). Ensure
+this new one is added.
 
 The GPG Key fingerprint of the new key is:
 
@@ -38,51 +46,59 @@ C3C0 A285 34B9 293E AF51  FABD 9F9D DC08 3888 C1CD
 Fluentbit releases (Releases signing key) <[email protected]>
 ```
 
-The previous key is still available at [https://packages.fluentbit.io/fluentbit-legacy.key](https://packages.fluentbit.io/fluentbit-legacy.key) and may be required to install previous versions.
+The previous key is [still available](https://packages.fluentbit.io/fluentbit-legacy.key)
+and might be required to install previous versions.
 
 The GPG Key fingerprint of the old key is:
 
 ```text
 F209 D876 2A60 CD49 E680 633B 4FF8 368B 6EA0 722A
 ```
 
-Refer to the [supported platform documentation](../supported-platforms.md) to see which platforms are supported in each release.
+Refer to the [supported platform documentation](../supported-platforms.md) to see
+which platforms are supported in each release.
 
 ## Update your sources lists
 
-On Debian, you need to add our APT server entry to your sources lists, please add the following content at bottom of your **/etc/apt/sources.list** file - ensure to set `CODENAME` to your specific [Debian release name](https://wiki.debian.org/DebianReleases#Production\_Releases) (e.g. `bookworm` for Debian 12):
+For Debian, you must add the Fluent Bit APT server entry to your sources lists.
+Add the following content at bottom of your `/etc/apt/sources.list` file.
 
-```bash
+```bash copy
 deb [signed-by=/usr/share/keyrings/fluentbit-keyring.gpg] https://packages.fluentbit.io/debian/${CODENAME} ${CODENAME} main
 ```
 
+Replace _`CODENAME`_ with your specific
+[Debian release name](https://wiki.debian.org/DebianReleases#Production\_Releases)
+(for example: `bookworm` for Debian 12)
+
 ## Update your repositories database
 
-Now let your system update the _apt_ database:
+Update your system's `apt` database:
 
-```bash
+```bash copy
 sudo apt-get update
 ```
 
 {% hint style="info" %}
-We recommend upgrading your system (`sudo apt-get upgrade`). This could avoid potential issues with expired certificates.
+Fluent Bit recommends upgrading your system (`sudo apt-get upgrade`). This could
+avoid potential issues with expired certificates.
 {% endhint %}
 
 ## Install Fluent Bit
 
-Using the following _apt-get_ command you are able now to install the latest _fluent-bit_:
+1. Use the following `apt-get` command to install the latest Fluent Bit:
 
-```bash
-sudo apt-get install fluent-bit
-```
+   ```bash copy
+   sudo apt-get install fluent-bit
+   ```
 
-Now the following step is to instruct _systemd_ to enable the service:
+1. Instruct `systemd` to enable the service:
 
-```bash
-sudo systemctl start fluent-bit
-```
+   ```bash copy
+   sudo systemctl start fluent-bit
+   ```
 
-If you do a status check, you should see a similar output like this:
+If you do a status check, you should see a similar output similar to:
 
 ```bash
 sudo service fluent-bit status
@@ -98,4 +114,6 @@ sudo service fluent-bit status
 ...
 ```
 
-The default configuration of **fluent-bit** is collecting metrics of CPU usage and sending the records to the standard output, you can see the outgoing data in your _/var/log/syslog_ file.
+The default Fluent Bit configuration collect metrics of CPU usage and sends the
+records to the standard output. You can see the outgoing data in your
+`/var/log/messages` file.