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    Leganto AP01 - RCA - August 28, 2018

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    This document serves as a Root Cause Analysis for the Leganto service interruption experienced by Ex Libris customers on August 28th, 2018.

    The goal of this document is to share our findings regarding the event, specify the root cause analysis, outline actions to be taken to solve the downtime event, as well as preventive measures Ex Libris is taking to avoid similar cases in future.

    Event Timeline

    Service interruption was experienced by Ex Libris customers served by the Leganto AP01 instance at the APAC Data Center during the following hours:

    August 28th, 2018 from 01:23 PM until 01:55 PM Singapore time

    During the event, the service was unavailable for the environment.

    Root Cause Analysis

    Ex Libris Engineers investigated this event to determine the root cause analysis with the following results:

    While performing a proactive activity on the environment, a procedure with an incorrect step was executed causing a system down incident.
    Ex Libris engineers restarted the entire environment to solve the problem.

    Technical Action Items and Preventive Measures

    Ex Libris has taken the following action and preventive measures to avoid such an occurrence in future:

    • Ex Libris engineers restarted the entire environment to solve the problem.
    • A review of the procedure related to this proactive activity was reviewed and updated to prevent reoccurrence in the future.

    Customer Communication 

    ExLibris is committed to providing customers with prompt and ongoing updates during Cloud events. Ongoing and prompt updates on service interruptions appear in the system status portal at this address:

    These updates are automatically sent as emails to registered customers.

    Publication History 


    Date Publication History
    September 6, 2018 Initial Publication


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