Docs: Task doc for installing with ansible.

docs/sources/flow/get-started/install/ansible.md

@@ -0,0 +1,81 @@
+---
+aliases:
+- /docs/grafana-cloud/agent/flow/get-started/install/ansible/
+- /docs/grafana-cloud/monitor-infrastructure/agent/flow/get-started/install/ansible/
+- /docs/grafana-cloud/monitor-infrastructure/integrations/agent/flow/get-started/install/ansible/
+- /docs/grafana-cloud/send-data/agent/flow/get-started/install/ansible/
+canonical: https://grafana.com/docs/agent/latest/flow/get-started/install/ansible/
+description: Learn how to install Grafana Agent Flow with Ansible
+menuTitle: Ansible
+title: Install Grafana Agent Flow with Ansible
+weight: 550
+---
+
+# Install or uninstall {{% param "PRODUCT_NAME" %}} using Ansible
+
+You can use Ansible to install and manage {{< param "PRODUCT_NAME" >}} on Linux hosts.
+
+## Before you begin
+
+- These steps assume you already have a working [Ansible](https://www.ansible.com/) setup,
+and a pre-existing inventory.
+- You can add the tasks below to any new or existing Role you choose.
+
+## Steps
+
+To add {{% param "PRODUCT_NAME" %}} to a host:
+
+1. Create a file named `grafana-agent.yml` and add the following:
+    ```yaml
+    - name: Install Grafana Agent Flow
+      hosts: all
+      become: true
+      tasks:
+        - name: Install Grafana Agent Flow
+          ansible.builtin.include_role:
+            name: grafana.grafana.grafana_agent
+          vars:
+            grafana_agent_mode: flow
+            # Destination file name
+            grafana_agent_config_filename: config.river
+            # Local file to copy
+            grafana_agent_provisioned_config_file:  "<path-to-config-file-on-localhost>"
+            grafana_agent_flags_extra:
+              server.http.listen-addr: '0.0.0.0:12345'
+    ```
+1. Replace the following field values:
+
+   - `<path-to-config-file-on-localhost>` with the path to river configuration file on the Ansible Controller (Localhost).
+
+1. Run the Ansible playbook
+  In the Linux machine's terminal, run the following command from the directory where the Ansible playbook is located.
+
+    ```shell
+    ansible-playbook grafana-agent.yml
+    ```
+## Validate
+
+1. Grafana Agent service on the target machine should be `active` and `running`. You should see a similar output:
+<!-- vale Grafana.ReferTo = NO -->
+```shell
+$ sudo systemctl status grafana-agent.service
+  grafana-agent.service - Grafana Agent
+    Loaded: loaded (/etc/systemd/system/grafana-agent.service; enabled; vendor preset: enabled)
+    Active: active (running) since Wed 2022-07-20 09:56:15 UTC; 36s ago
+  Main PID: 3176 (agent-linux-amd)
+    Tasks: 8 (limit: 515)
+    Memory: 92.5M
+      CPU: 380ms
+    CGroup: /system.slice/grafana-agent.service
+      └─3176 /usr/local/bin/agent-linux-amd64 --config.file=/etc/grafana-cloud/agent-config.yaml
+```
+
+## Next steps
+
+- [Configure {{< param "PRODUCT_NAME" >}}][Configure]
+
+{{% docs/reference %}}
+
+[Configure]: "/docs/agent/ -> /docs/agent/<AGENT_VERSION>/flow/tasks/configure/configure-linux.md"
+[Configure]: "/docs/grafana-cloud/ -> /docs/grafana-cloud/send-data/agent/flow/tasks/configure/configure-linux.md"
+{{% /docs/reference %}}