EventQ installation requirements

Hardware requirements - Single-host installation

This section outlines hardware requirements for installing TeamForge EventQ services on a single server. The single-host installation places all three TeamForge EventQ services (App server, MQ server, and DB server) on a single operating system. This configuration is designed for trials and moderate load, while the multi-host option outlined below is provided as a first step toward scaling your TeamForge EventQ instance.

Prepare for installation by setting up:

Host running RHEL or CentOS, release 6.8 or 7.2
User credentials with sudo privileges on the host

Important: EventQ services may be collocated with TeamForge on the same physical server. If you do so, compare the hardware requirements for both TeamForge and EventQ and settle for the best possible hardware resources for your setup. It's always recommended to install EventQ on its own server for optimal scalability and performance.

The following are minimum resource specification requirements:

Host	CPU	RAM	Storage	Description
App/DB/MQ server	Quad-core 2.5 GHz	8 GB	74 GB	Single host, all services

Hardware requirements - Multi-host installation

For high load instances or when performance is critical, install TeamForge EventQ services on separate servers or virtual machines.

Multi-host installation originates on a single server and installs core services and the TeamForge EventQ application on that first server (the App server). Then, the installer remotely installs the database service on a second server (the DB server) and the message queue service on a third server (the MQ server).

Prepare for a multi-host installation by setting up:

Empty hosts running RHEL or CentOS, 6.8 or 7.2
User credentials with sudo privileges on all three hosts
ssh routes from the App server host to the other two hosts

The following are minimum resource specification requirements:

Host	CPU	RAM	Storage	Bandwidth	Description
App server	Quad-core 2.4 GHz	4 GB	16 GB	1 Gbps to DB server	Application server, initiates installation process
DB server	Dual-core 2.4 GHz	4 GB	50 GB	1 Gbps to App server	MongoDB database server
MQ server	Dual-core 2.4 GHz	4 GB	16 GB	N/A	AMQP Message queue server

Software requirements and services

Proper TeamForge version:
EventQ 16.7 - TeamForge 16.7
SSH and SFTP clients are required, i.e. openssh-client. To test for this dependency, on the target server issue the command: sftp localhost
createrepo package is required by the disconnected mode installation. To test for this dependency, on the target server issue the command: createrepo --version
EventQ has a number of other open source software dependencies, all of which are installed as part of the installation process. During the installation process you may choose to use pre-existing MongoDB or RabbitMQ services instead of installing them, so long as version requirements are satisfied. Aside from that exception, the following software services and their dependencies will be installed:

Product	Version	Home Page	Documentation	Host
Nginx	1.5.1	http://nginx.org	http://nginx.org/en/docs/	App server
Phusion Passenger	4.0.5	https://www.phusionpassenger.com	https://www.phusionpassenger.com/support	App server
Redis	2.6.13	http://www.redis.io	http://redis.io/documentation	App server
MongoDB	2.6	http://www.mongodb.org	http://docs.mongodb.org/manual	DB server
RabbitMQ	3.6.2 ^#	http://www.rabbitmq.com	http://www.rabbitmq.com/documentation.html	MQ server

Proxy settings and ports used by TeamForge EventQ services

The EventQ service is designed to run proxied behind TeamForge's web server. The default configuration works for situations where EventQ and TeamForge are intended to run on the same machine. However, if you intend to install EventQ on a separate host, the TeamForge site-option ORC_HOSTNAME must be uncommented and changed from localhost to the desired hostname. Please read TeamForge-EventQ proxy settings for a complete list of proxy configuration options and make any needed changes in TeamForge's site-options.conf file before installation begins.

Please be aware of the following port requirements to avoid conflicts during installation. Note that the HTTP/HTTPS port listed below is EventQ's internal, non-proxied port. Once proxied, EventQ will be accessible through TeamForge's HTTP(S) hostname and port.

Port	service	Host
8844	HTTP / HTTPS	App server
6379	Redis	App server
27017	MongoDB	DB server
28017	MongoDB HTTP console	DB server
5672	RabbitMQ	MQ server
15672	RabbitMQ management console	MQ server

Firewall/Routing requirements

The following use cases detail TeamForge EventQ's firewall/routing requirements. By default, end-user web access is proxied through the primary TeamForge web server. TeamForge EventQ adapters supply data using the MQ layer and therefore need access to the MQ server (default port 5672). There are also private access requirements between the various installed services as detailed below.

Port	From	To	Description
443/80	App server	TeamForge server	App communication with TeamForge server
8844	TeamForge server	App server	TeamForge communication with App server
5672	TeamForge EventQ Adapters	MQ server	Message communication between Adapters and MQ server
5672	App server	MQ server	App communication with MQ server
5672	TeamForge server	MQ server	TeamForge communication with MQ server
15672	ALL	MQ server	App administration of MQ server
27017	App server	DB server	App server communication with DB server
22	App server	MQ server	App ssh to MQ server, installation only
22	App server	DB server	App ssh to DB server, installation only

The App server also needs access to the Redis service, but since it is installed on the App server by default, it is not included in the table above.