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Minimum requirement

CPU

2 cores vCPU 

RAM

4 GB

Disk

100 GB mounted on /

NICs

1 NIC

Software Requirements

OS Compatibility

The following OS software is required on the server:

Item

Version

Notes

CentOS

7.x updated to the latest packages (use Yum update)Administrative privileges (root) are required to follow the deployment steps.

Database Requirements

Item

Notes

MS SQL Database Server 2016/2017 Express/Standard/EnterpriseFor clustered SQL Server installation, the customer will be responsible to provide the cluster. For stand-alone DB deployment, DB (2017 express) will be included within docker containers.
Microsoft SQL Server 2017Microsoft SQL Server 2017, Microsoft Corporation Express Edition (64-bit) on Linux (Ubuntu 16.04.5 LTS). 
Only valid in case of a non-HA deployment.

Docker Engine Requirements

ItemNotes

Docker CE

Docker CE 18.06.0+


Browser Compatibility

Item

Version

Notes

Firefox

68.0.2(64 bit), 69.0.3(64-bit)


Chrome

Not tested 


IENot tested

Not supported

Cisco Unified CCX Compatibility

Recently tested against CCX version 11.6 and 12.0 (Premium edition). On-Demand testing can be done on other CCX versions higher and/or prior to v12.0 and CCX Enhanced editions.

Cisco Unified CCE Compatibility

Planned for an upcoming release of Dashboards & Wallboards.

Installation Steps

Internet should be available on the machine where the application is being installed and connections on port 9242 should be allowed in the network firewall to carry out the installation steps.  All the commands start with a # indicating that root user privileges are required to execute these commands. Trailing # is not a part of the command.

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Repeat the following steps for all the machines in the HA cluster.

  1. Download keepalived.sh script and place it in /root directory.

  2. Give execute permission and execute the script: 

    # chmod +x keepalived.sh
    # ./keepalived.sh


  3. Configure keep.env file inside /root/keep-alived folder

    Name

    Description

    KEEPALIVED_UNICAST_PEERS

    IPs of the machines in the cluster. On each machine, this variable should have a list of IPs of all the other machines in the cluster. The format of the list is as below: 

    "#PYTHON2BASH:['192.168.1.76','192.168.1.80']" 

    KEEPALIVED_VIRTUAL_IPSVirtual IP of the cluster. It should be available in the LAN. For example: 192.168.1.245
    KEEPALIVED_PRIORITYPriority of the node. Instance with lower number will have a higher priority. It can take any value from 1-255. 
    KEEPALIVED_INTERFACEName of the network interface with which your machine is connected to the network. On CentOS, ifconfig or ip addr sh will show all the network interfaces and assigned addresses. 
    CLEARANCE_TIMEOUTCorresponds to the initial startup time of the application in seconds which is being monitored by keepalived. A nominal value of 60-120 is good enough
    KEEPALIVED_ROUTER_IDDo not change this value.
    SCRIPT_VAR

    This script is continuously polled after 2 seconds. Keepalived relinquishes control if this shell script returns a non-zero response. For wallboard, it should be:

    pidof dockerd && wget -O index.html http://localhost/umm/base/index.html


  4. Give the execute permission and execute the script: 

    # chmod +x keep-command.sh
    # ./keep-command.sh


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