Docs: Filling in installation documentation

docs/install/vm-install/dynamic-download.md

@@ -1,2 +1,4 @@
 ## Where is this content?
 The Gluu Flex documentation is a work in progress, and this document is currently a draft. Keep an eye on this page for updates.
+
+This upcoming page is for Gluu Flex, an upcoming Gluu product. If you're looking for the Janssen Project installation page, find it [here](https://docs.jans.io/head/admin/install/vm-install/dynamic-download/).

docs/install/vm-install/rhel.md

@@ -1,2 +1,4 @@
 ## Where is this content?
 The Gluu Flex documentation is a work in progress, and this document is currently a draft. Keep an eye on this page for updates.
+
+This content is for Gluu Flex, an upcoming Gluu product. If you're looking for the Gluu 4 installation page, find it [here](https://gluu.org/docs/gluu-server/4.4/installation-guide/install-rhel/), and if you're looking for the Janssen Project installation page, find it [here](https://docs.jans.io/head/admin/install/vm-install/rhel/).

docs/install/vm-install/suse.md

@@ -1,2 +1,4 @@
 ## Where is this content?
 The Gluu Flex documentation is a work in progress, and this document is currently a draft. Keep an eye on this page for updates.
+
+This content is for Gluu Flex, an upcoming Gluu product. If you're looking for the Gluu 4 installation page, find it [here](https://gluu.org/docs/gluu-server/4.4/installation-guide/install-suse/), and if you're looking for the Janssen Project installation page, find it [here](https://docs.jans.io/head/admin/install/vm-install/suse/).

docs/install/vm-install/ubuntu.md

@@ -1,2 +1,75 @@
-## Where is this content?
-The Gluu Flex documentation is a work in progress, and this document is currently a draft. Keep an eye on this page for updates.
+
+# Ubuntu Janssen Installation
+
+Before you install, check the [VM system requirements](vm-requirements.md).
+
+## Supported Versions
+- Ubuntu 20.04
+
+## Install the Package
+
+- Download the release package from the Github Gluu Flex [Releases](https://github.com/GluuFederation/flex/releases)
+
+```
+wget https://github.com/JanssenProject/jans/releases/download/v5.0.0-4/flex_5.0.0-4.ubuntu20.04_amd64.deb -P ~/
+```
+
+- Verify integrity of the downloaded package by verifying published `sha256sum`.   
+
+    Download `sha256sum` file for the package
+
+    ```shell
+    wget https://github.com/JanssenProject/jans/releases/download/v5.0.0-4/flex_5.0.0-4.ubuntu20.04_amd64.deb.sha256sum -P ~/
+    ```
+
+    Check the hash if it is matching. 
+
+    ```shell
+    sha256sum -c flex_5.0.0-4.ubuntu20.04_amd64.deb.sha256sum
+    ```
+
+    Output similar to below should confirm the integrity of the downloaded package.
+
+    ```text
+    <package-name>: OK
+    ```
+
+- Install the package
+
+```
+apt install -y ~/flex_5.0.0-4.ubuntu20.04_amd64.deb
+```
+
+## Run the setup script
+
+- Run the setup script in interactive mode:
+
+```
+python3 /opt/jans/flex/flex-linux-setup/flex_setup.py
+```
+
+See more detailed [instructions](../setup.md) on the setup script if you're confused how to answer any of the questions, for details about command line arguments, or you would prefer to use a properties file instead of interactive mode.
+
+## Ubuntu Janssen Un-Installation
+
+Removing Janssen is a two step process:
+
+1. Delete files installed by Gluu Flex
+1. Remove and purge the `jans` package
+
+Use the command below to uninstall the Gluu Flex server
+
+```
+python3 /opt/jans/flex/flex-linux-setup/flex_setup.py --remove-flex
+```
+
+<!-- I need to add the output when command is run. -->
+
+
+The command below removes and purges the `jans` package
+
+```
+apt-get --purge remove jans
+```
+
+<!-- I need to add the output when command is run. -->

docs/install/vm-install/vm-requirements.md

@@ -1,2 +1,77 @@
-## Where is this content?
-The Gluu Flex documentation is a work in progress, and this document is currently a draft. Keep an eye on this page for updates.
+# VM System Requirements
+
+Gluu Flex currently provides packages for these Linux distros:
+
+- Ubuntu (versions: 20.04)
+- SUSE (SLES or LEAP) (version: 15)
+- RedHat Enterprise Linux (version: 8)
+
+## Hardware Requirements
+
+A single-VM deployment is where all services are running on one server. Although, the requirements can vary based on the size of the data and the required concurrency, the following guidelines can help you plan:
+
+### Development and Test Environments
+- 4 GB RAM
+- 2 CPU
+- 20 GB Disk
+
+### Production Environment Recommendation:
+- 8 GB RAM
+- 4 CPU
+- 4 GB swap space
+- 50 GB Disk
+
+## Port Configuration
+
+Gluu Flex requires the following ports to be open for incoming connections.
+
+| Port | Protocol | Notes           |
+|------|----------|-----------------|
+| 443  | TCP      | TLS/HTTP        |
+
+You may want to use a redirect on port 80 to 443, although it is not required. Of course you will also need some way to login to your server, but that is out of scope of these docs.
+
+Check your server firewall documentation to configure your firewall to allow `https`.
+
+## Hostname / IP Address Configuration
+
+It is recommended that you use a static ip address for Gluu Flex. Your server should also return the hostname for the `hostname` command, it's recommended that you add the hostname to the `/etc/hosts` file.
+
+## File Descriptor Configuration (FD)
+
+Like most database and Internet servers, you must have at least 65k file descriptors. If you don't, your server will hang.
+
+First, check the current file descriptor limit using command below. If the existing FD limit exceeds 65535, then you're good.
+
+```text
+# cat /proc/sys/fs/file-max
+```
+
+If FD limit is less than 65535 (e.g. 1024), then follow the steps below to increase the value.
+
+1) Set soft and hard limits by adding the following lines in the `/etc/security/limits.conf` file
+
+```text
+* soft nofile 65535
+* hard nofile 262144
+```
+
+2) Add the following lines to `/etc/pam.d/login` if not already present
+
+```text
+session required pam_limits.so
+```
+
+3) Increase the FD limit in `/proc/sys/fs/file-max`
+
+```text
+echo 65535 > /proc/sys/fs/file-max**
+```
+
+4) Use the `ulimit` command to set the FD limit to the hard limit specified in `/etc/security/limits.conf`. If setting to hard limit doesn't work, then try to set it to the soft limit.
+
+```text
+ulimit -n 262144
+```
+
+5) Restart the system

mkdocs.yml

@@ -110,23 +110,21 @@ nav:
 - 'Overview': 'README.md'
 - 'Installation':
     - 'install/README.md'
-    - 'VM Installation':
-        - 'install/vm-install/README.md'
-        - 'VM Requirements': 'install/vm-install/vm-requirements.md'
-        - 'Ubuntu': 'install/vm-install/ubuntu.md'
-        - 'RHEL': 'install/vm-install/rhel.md'
-        - 'Suse': 'install/vm-install/suse.md'
-        - 'FIPS DISA STIG': 'install/vm-install/disa-stig.md'
-        - 'Dynamic Download': 'install/vm-install/dynamic-download.md'
     - 'Helm Deployments':
         - 'install/helm-install/README.md'
         - 'Local Kubernetes Cluster': 'install/helm-install/local.md'
         - 'Amazon EKS': 'install/helm-install/amazon-eks.md'
         - 'Google GKE': 'install/helm-install/google-gke.md'
-        - 'Digital Ocean DOK': 'install/helm-install/digitalocean-dok.md'
         - 'Microsoft Azure AKS': 'install/helm-install/microsoft-azure.md'
-        - 'Red Hat Open Shift': 'install/helm-install/red-hat-open-shift.md'
         - 'Using Rancher Marketplace': 'install/helm-install/rancher.md'
+    - 'VM Installation':
+        - 'install/vm-install/README.md'
+        - 'VM Requirements': 'install/vm-install/vm-requirements.md'
+        - 'Ubuntu': 'install/vm-install/ubuntu.md'
+        - 'RHEL': 'install/vm-install/rhel.md'
+        - 'Suse': 'install/vm-install/suse.md'
+        - 'Dynamic Download': 'install/vm-install/dynamic-download.md'
+    - 'Setup Script': 'install/setup.md'
 - 'Administration':
     - 'Admin UI':
         - 'admin-ui/README.md'