ARGOMS Availability and Continuity Plan
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Back to main page: Services Availability Continuity Plans
This page reports on the Availability and Continuity Plan for ARGO Messaging Service and it is the result of the risk assessment conducted for this service: a series of risks and threats has been identified and analysed, along with the correspondent countermeasures currently in place. Whenever a countermeasure is not considered satisfactory for either avoiding or reducing the likelihood of the occurrence of a risk, or its impact, it is agreed with the service provider a new treatment for improving the availability and continuity of the service. The process is concluded with an availability and continuity test.
|Av/Co plan and test||-||-|
The performances reports in terms of Availability and Reliability are produced by ARGO on an almost real time basis and they are also periodically collected into the Documentation Database. In the OLA it was agreed the following performances targets, on a monthly basis:
- Availability: 98%
- Reliability 98%
Risks assessment and management
For more details, please look at the google spreadsheet. We will report here a summary of the assessment.
|Risk id||Risk description||Affected components||Established measures||Risk level||Treatment||Expected duration of downtime / time for recovery|
|1||Service unavailable / loss of data due to hardware failure||Argo Messaging Service||Automated Deployment and Backup Procedures that allow for rapid redeployment of affected components||Low||Restore service from the backups on the new hosts which are not affected by the failure.||Almost Zero|
|2||Service unavailable / loss of data due to software failure||Argo Messaging Service||Automated Deployment and Backup Procedures that allow for rapid redeployment of affected components||Low||Restore service from the backups, log data analysis in order to find a reason of the software failure.||Zero for the case of partial failure. 3-4 work hours if a new virtual machine need to be spawned.|
|3||service unavailable / loss of data due to human error||Argo Messaging Service||Automated Deployment and Backup Procedures that allow for rapid redeployment of affected components||Low||Restore service/data from backups. Revise actions done which led to the failure and modification of the processes in order to not allow the same error again.||Up to 8 hours|
|4||service unavailable for network failure (Network outage with causes external of the site)||Argo Messaging Service||Automated Deployment and Backup Procedures that allow for rapid redeployment of affected components||Low||Standard mitigation and recovery procedures made by network operators.||Almost Zero. 3-4 working hours in case of maintenance|
|5||Unavailability of key technical and support staff (holidays period, sickness, ...)||Argo Messaging Service||There is always one member of the team on call.||Low||1 or more working days|
|6||Major disruption in the data centre. Fire, flood or electric failure for example||Argo Messaging Service||Automated Deployment and Backup Procedures that allow for rapid redeployment of affected components||Medium||Restore service from the backups on the new hosts which are not affected by the failure.||1 or more working days|
|7||Major security incident. The system is compromised by external attackers and needs to be reinstalled and restored.||Argo Messaging Service||Automated Deployment and Backup Procedures that allow for rapid redeployment of affected components||Low||Restore service from backups on a new hosts.||3-4 work hours. In case new host certificates are required, up to 1 day.|
|8||(D)DOS attack. The service is unavailable because of a coordinated DDOS.||Argo Messaging Service||Automated Deployment and Backup Procedures that allow for rapid redeployment of affected components||Low||Utilization of DDOS protection on the network level provided by GRNET.||Depending on the attack, few hours maximum|
The level of all the identified risks is acceptable and the countermeasures already adopted are considered satisfactory
Availability and Continuity test
The proposed A/C test will focus on a recovery scenario: the service has been disrupted and needs to be reinstalled from scratch. The time spent for restoring the service will be measured, using the last backup of the data stored in it and evaluating any eventual loss of information Performing this test will be useful to spot any issue in the recovery procedures of the service.
|Alessandro Paolini||2019-02-25||first draft|