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    5. EU00, EU01 and EU02 - RCA - October 13, 2023

    EU00, EU01 and EU02 - RCA - October 13, 2023

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    1. Introduction
    2. Effected Products  
    3. Event Timeline
    4. Root Cause Analysis
    5. Technical Action Items and Preventive Measures
    6. Customer Communication

    Introduction

    This document serves as a Root Cause Analysis for the service interruption experienced by Ex Libris customers.
    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.

    Effected Products  

    HEP EU00, EU01 and EU02

    Event Timeline

    Service disruption was experienced by Ex Libris customers served by the EU00, EU01 and EU03 instances at our European Data Center during the following time period:

    October 13, 2023 from 04:37 AM until 06:31 AM Amsterdam time.

    During the event, Service was unavailable for the environments.

    Root Cause Analysis

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

    A misaligned internal process caused a massive usage on the internet traffic which ended up in a service disruption.

    Once the Exlibris engineers identified the issue the process capacity was limited and the service recovered.

    Technical Action Items and Preventive Measures

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

    • Our second internet line was utilized to prevent reoccurrence of this issue.
    • The monitoring process was improved.

     

    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: http://status.exlibrisgroup.com/

    These updates are automatically sent as emails to registered customers.

    View article in the Exlibris Knowledge Center
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      • EU00- RCA - September 12, 2022
      • EU00, EU01 and EU02 - RCA - September 13, 2024
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