# Reliability of ElasticSearch **URL:** \ **Category:** Elasticsearch\ **Created:** [December 1, 2014, 6:15pm UTC](https://discuss.elastic.co/t/reliability-of-elasticsearch/21011 "2014-12-01T18:15:19Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Xinli\_Shang](https://avatars.discourse-cdn.com/v4/letter/x/9dc877/32.png) [@Xinli\_Shang](https://discuss.elastic.co/u/Xinli_Shang)\ **Post date:** [December 1, 2014, 6:15pm UTC](https://discuss.elastic.co/t/reliability-of-elasticsearch/21011/1 "2014-12-01T18:15:19Z")
I am new to ElasticSearch and asked to design ElasticSearch for log search. One of the big requirement is availability \> 99.9%. If you have designed elastic search, could you please share your top 3 lessons that you learn to make elastic search highly available? -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC\_1Ly0%3Dw%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC_1Ly0%3Dw%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [December 1, 2014, 10:54pm UTC](https://discuss.elastic.co/t/reliability-of-elasticsearch/21011/2 "2014-12-01T22:54:30Z")
Have an uneven number of master eligible nodes. Set discovery.zen.minimum\_master\_nodes equal to ​ number masters​/2+1. Ensure you have monitoring setup, both on ES and the OS. There's lots more though, but that's a start. On 2 December 2014 at 05:15, Xinli Shang [xinlishang@gmail.com](mailto:xinlishang@gmail.com) wrote: > I am new to Elasticsearch and asked to design Elasticsearch for log > search. One of the big requirement is availability \> 99.9%. If you have > designed Elasticsearch, could you please share your top 3 lessons that you > learn to make Elasticsearch highly available? > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC\_1Ly0%3Dw%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC_1Ly0%3Dw%40mail.gmail.com) > [https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC\_1Ly0%3Dw%40mail.gmail.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC_1Ly0%3Dw%40mail.gmail.com?utm_medium=email&utm_source=footer) > . > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAF3ZnZk201qXxXbp-oJTp%2BSPrK0JTVCPbVQDKnEBFk9ny%3D42DA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAF3ZnZk201qXxXbp-oJTp%2BSPrK0JTVCPbVQDKnEBFk9ny%3D42DA%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![nik9000](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nik9000/32/44947_2.png) [@nik9000](https://discuss.elastic.co/u/nik9000)\ **Post date:** [December 1, 2014, 11:01pm UTC](https://discuss.elastic.co/t/reliability-of-elasticsearch/21011/3 "2014-12-01T23:01:24Z")
99.9% uptime allows almost nine hours a year. You could totally manage that if you have someone on call 24/7. Elasticsearch itself is reasonably stable especially if you don't expose very complex queries to everyone. We do and we only have one person on call (me) and we've probably just made that 99.9% uptime this year. I imagine next year it'll be better because we'll have a whole year of experience with it in production. Nik On Mon, Dec 1, 2014 at 5:54 PM, Mark Walkom [markwalkom@gmail.com](mailto:markwalkom@gmail.com) wrote: > Have an uneven number of master eligible nodes. > Set discovery.zen.minimum\_master\_nodes equal to > ​ number masters​/2+1. > Ensure you have monitoring setup, both on ES and the OS. > > There's lots more though, but that's a start. > > On 2 December 2014 at 05:15, Xinli Shang [xinlishang@gmail.com](mailto:xinlishang@gmail.com) wrote: > > > I am new to Elasticsearch and asked to design Elasticsearch for log > > search. One of the big requirement is availability \> 99.9%. If you have > > designed Elasticsearch, could you please share your top 3 lessons that you > > learn to make Elasticsearch highly available? > > > > -- > > You received this message because you are subscribed to the Google Groups > > "elasticsearch" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > > To view this discussion on the web visit > > [https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC\_1Ly0%3Dw%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC_1Ly0%3Dw%40mail.gmail.com) > > [https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC\_1Ly0%3Dw%40mail.gmail.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/CAHsnNRh-qPc1Q1j%3DCxY6zh8e7UQ4j%2B8Oj5E4mir5TPC_1Ly0%3Dw%40mail.gmail.com?utm_medium=email&utm_source=footer) > > . > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/CAF3ZnZk201qXxXbp-oJTp%2BSPrK0JTVCPbVQDKnEBFk9ny%3D42DA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAF3ZnZk201qXxXbp-oJTp%2BSPrK0JTVCPbVQDKnEBFk9ny%3D42DA%40mail.gmail.com) > [https://groups.google.com/d/msgid/elasticsearch/CAF3ZnZk201qXxXbp-oJTp%2BSPrK0JTVCPbVQDKnEBFk9ny%3D42DA%40mail.gmail.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/CAF3ZnZk201qXxXbp-oJTp%2BSPrK0JTVCPbVQDKnEBFk9ny%3D42DA%40mail.gmail.com?utm_medium=email&utm_source=footer) > . > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAPmjWd16UPemVx9tXKDC0m-Wu8Y3o\_RGN9YPpX16frYYx9BLzw%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAPmjWd16UPemVx9tXKDC0m-Wu8Y3o_RGN9YPpX16frYYx9BLzw%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 12:46am UTC](https://discuss.elastic.co/t/reliability-of-elasticsearch/21011/4 "2017-07-06T00:46:43Z")