qaware.de A Hitchhikers Guide to the Cloud Friendly Migration of Apache Solr Mario-Leander Reimer [email protected] Managing Director | CTO QAware GmbH Wolfgang Klimt [email protected] IT Troubleshooter ConSol Software GmbH

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Old Architecture QAware | 5 28x 28x 28x 8 Apache Instances Search Load 28x Loader

New Architecture, Step one QAware | 6 28 x 3(+) 28x 8 Apache Instances Search 28x Loader Load

New Architecture, Step one QAware | 7 28 x 3(+) 28x 8 Apache Instances Search 28x Loader Load Staging 28 x

Search Solr Go Live QAware | 8 8 Apache Instances 28x 28x

New Architecture, Step two QAware | 9 28 x 3(+) Search 8 Apache Instances 28 x Staging 28 x Load Loader Loader Loader Loader ? x Loader

Go Live of Step two QAware | 10 28 x 3(+) Search 8 Apache Instances 28 x Staging Loader Loader Loader Loader 28x 28x Loader

Go Live of Step two QAware | 11 28 x 3(+) Search 8 Apache Instances 28 x Staging Loader Loader Loader Loader 28x 28x Loader

Technologies QAware | 12 ■ Mainly AWS EC2 machines and ALBs ■ Terraform and Terragrunt used as Infrastructure as Code solution ■ Hashicorp Packer used to create custom AMIs with Apache Solr distribution and AWS Corretto JDK pre-installed ■ AWS Aurora but also Apache Ignite as staging databases ■ Envoy Proxies to access on-premise datacenter from VPC, mainly to save IP addresses on direct connect ■ EBS snapshots for faster startup of Solr instance on scale-up

Learnings and Tips QAware | 13 ■ Plan a gradually Go Live ■ Have a fallback plan ■ Many small instances behave different to few big instances ■ Reserve time for improvements after go live ■ Test thoroughly, but don’t expect to have tested everything

Q&A

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