Update README.md

README.md

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 ## OS Support
 
 * Red Hat Linux family:
-    * Red Hat Enterprise Linux 7+
-    * Cent OS 7+
-    * Scientific Linux 7+
+    * under development
 * Debian Linux family:
-    * Debian linux 8+
-    * Ubuntu linux 14.04 LTS
+    * Ubuntu linux 18.04 LTS
 
 ## Prerequisites
 
 ### Red Hat family
 
-Install EPEL repository (if the link is broken, please contact us):
-```bash
-sudo rpm -ivh http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm
-```
-
-Install some important packages:
-```bash
-sudo yum install python2-pip gcc vim git
-```
 
 ### Debian family
 
-Install some important packages:
+Refresh your system:
 ```bash
-sudo apt-get update
-sudo apt-get install python-pip vim git
+sudo apt update
+sudo apt upgrade
+sudo reboot
 ```
 
-## Install Salt
-
-```bash
-sudo pip install salt==2014.7.1
+Install some important packages
+```bash 
+sudo apt install python3 python3-pip python3-dev virtualenvwrapper git vim
 ```
 
 ## Get the installer
 Clone circle installer git repository into cloud home
 
 ```bash
-git clone https://git.ik.bme.hu/circle/salt.git
+git clone https://git.ik.bme.hu/CIRCLE3/salt.git
 ```
 
-## Change variables
-Modify installer.sls file
-```
-vim salt/pillar/installer.sls
+## Single node quick install
+```bash
+sudo salt/install --local
 ```
 
-Most used variables
--------------------
-* **proxy_secret**: This is used to provide cryptographic signing, and should be set to a unique, unpredictable value.
-* **secret_key**: This is used to provide cryptographic signing, and should be set to a unique, unpredictable value.
-* **deployment_type**: local (development) or production
-* **admin_user**: user name to login in as admin on the site
-* **admin_pass**: password to login in as admin on the site
-* **database**:
-    * **password**: database user’s password
-* **amqp**:
-    * **password**: amqp user’s password
-    * **host**: amqp server IP - usually runs at localhost
-* **graphite**:
-    * **password**: graphite user’s password
-    * **host**: graphite server IP - usually runs at localhost
-* **nfs**:
-    * **enabled**: nfs is enabled
-    * **server**: nfs server’s hostname
-    * **network**: nfs server’s network to access files
-    * **directory**: this directory will be shared
-* **storagedriver**:
-    * **queue_name**: the server’s hostname
-* **fwdriver**:
-    * **queue_name**: the server’s hostname
-    * **gateway**: the server’s gateway
-    * **external_net**: the server’s network
-    * **external_if**: the server’s network interface
-
-Other variables
----------------
-
-* user: user who will install the software
-* time zone: the server’s time zone, format is region/city
-* amqp:
-    * user: amqp user
-    * port: amqp server’s port
-    * vhost: virtual host - specifies the namespace for entities (exchanges and queues) referred to by the protocol
-* agent:
-    * repo_revision: revision
-* agentdriver:
-    * repo_revision: revision
-* cache: cache url - usually pylibmc://127.0.0.1:11211/
-* database:
-    * name: django database’s name
-    * user: database user
-* fwdriver:
-    * repo_revision: revision
-    * user: fwdriver user name
-    * vm_if: vm interface
-    * vm_et: vm network
-    * management_if: management interface
-    * reload_firewall_timeout: timeout for synchronous firewall reload
-* graphite:
-    * user: graphite user
-    * port: graphite server’s port
-    * secret_key: graphite’s secret key
-* manager:
-    * repo_revision: revision
-* monitor-client:
-    * repo_revision: revision
-* storage-driver:
-    * repo_revision: revision
-* vm-driver:
-    * repo_revision: revision
-* vnc-driver:
-    * repo_revision: revision
-
-## Install Circle
-Run the following installation command:
-
-```bash
-sudo salt-call state.sls allinone --local --file-root=/home/$USER/salt/salt --pillar-root=/home/$USER/salt/pillar
+Open the port 443 for the portal 
+```bash 
+ufw allow 443
 ```
-After this finished, you have to get "Failed: 0" message.
-If installer fails, please visit the [Troubleshooting](#troubleshooting) paragraph.
 
-After install, delete agent.conf or agent.service file:
 
-If you have upstart:
-```bash
-sudo rm -f /etc/init/agent.conf
-```
-Or if you have systemd:
-```bash
-sudo rm -f /etc/systemd/system/agent.service
-```
 
 ## Quickstart - Standalone Node