32 lines
2.3 KiB
Markdown
32 lines
2.3 KiB
Markdown
---
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layout: post
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title: Building a Highly-Available PostgreSQL Cluster on Azure
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subtitle:
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category: howto
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tags: [cto, cloud, automation]
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author: esmaeil_sarabadani
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author_email: esmaeil.sarabadani@haufe-lexware.com
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header-img: "images/bg-post.jpg"
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---
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The possibility to create a PostgreSQL cluster on your Azure subscription is now only few clicks away. The use of PostgreSQL database (a.k.a the most advanced open-source database) has increased in different software development projects in Haufe and setting it up in a cluster on Azure in an easy and convenient way (preferably as-a-Service) was always a wish for developers.
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We would like to announce that with our new Azure template it is now possible to automate the creation of a highly-available PostgreSQL cluster on your Azure subscription.
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It uses Ubuntu 14.04 LTS machines with 128 GB SSD data disks for high performance. A [Zookeeper] ensemble of three machines is used to orchestrate the behavior of the postgres cluster. For automated PostgreSQL server management and leader election the open source solution [Patroni] (developed by zalando) is used and installed side by side with PostgreSQL 9.5 on the machines.
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To use this template simply click [here] and you will be redirected to the Azure login page where you can log in and provide values for the following parameters:
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- ClusterName: The name of the cluster to create. Avoid spaces and special characters in this name
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- InstanceCount: The number of postgreSQL servers to create. Minimum: 2, Maximum: 5
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- AdminUsername: Name for user account with root privileges. Can be used to connect to the machines using ssh
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- AdminPassword: Password for admin user account
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After deployment, you can connect to clusterName.regionName.cloudapp.azure.com on postgreSQL default port 5432 using username "admin" and the password you set as a parameter value in the template.
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In order to connect to the postgreSQL instances, use any ssh client on port 10110 for instance postgres0, 10111 for postgres1 and etc.
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We hope this brings some joy and of course convenience on your journey to cloud.
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[Zookeeper]: <http://zookeeper.apache.org/>
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[Patroni]: <https://github.com/zalando/patroni>
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[here]: <https://portal.azure.com/#create/Microsoft.Template/uri/https%3A%2F%2Ftangibletransfer.blob.core.windows.net%2Fpublic%2Fpostgresha%2FPostgresHA.json>
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