选题: 20190328 How to run PostgreSQL on Kubernetes

sources/tech/20190328 How to run PostgreSQL on Kubernetes.md
2025-01-28 23:20:10 +08:00 · 2019-04-03 16:21:11 +08:00 · 2019-04-03 16:21:11 +08:00 · e92505069e
commit e92505069e
parent a4e559a9d2
1 changed files with 108 additions and 0 deletions
--- a/sources/tech/20190328
+++ b/sources/tech/20190328
@ -0,0 +1,108 @@
+[#]: collector: (lujun9972)
+[#]: translator: ( )
+[#]: reviewer: ( )
+[#]: publisher: ( )
+[#]: url: ( )
+[#]: subject: (How to run PostgreSQL on Kubernetes)
+[#]: via: (https://opensource.com/article/19/3/how-run-postgresql-kubernetes)
+[#]: author: (Jonathan S. Katz https://opensource.com/users/jkatz05)
+
+How to run PostgreSQL on Kubernetes
+======
+Create uniformly managed, cloud-native production deployments with the
+flexibility to deploy a personalized database-as-a-service.
+![cubes coming together to create a larger cube][1]
+
+By running a [PostgreSQL][2] database on [Kubernetes][3], you can create uniformly managed, cloud-native production deployments with the flexibility to deploy a personalized database-as-a-service tailored to your specific needs.
+
+Using an Operator allows you to provide additional context to Kubernetes to [manage a stateful application][4]. An Operator is also helpful when using an open source database like PostgreSQL to help with actions including provisioning, scaling, high availability, and user management.
+
+Let's explore how to get PostgreSQL up and running on Kubernetes.
+
+### Set up the PostgreSQL operator
+
+The first step to using PostgreSQL with Kubernetes is installing an Operator. You can get up and running with the open source [Crunchy PostgreSQL Operator][5] on any Kubernetes-based environment with the help of Crunchy's [quickstart script][6] for Linux.
+
+The quickstart script has a few prerequisites:
+
+  * The [Wget][7] utility installed
+  * [kubectl][8] installed
+  * A [StorageClass][9] defined on your Kubernetes cluster
+  * Access to a Kubernetes user account with cluster-admin privileges. This is required to install the Operator [RBAC][10] rules
+  * A [namespace][11] to hold the PostgreSQL Operator
+
+
+
+Executing the script will give you a default PostgreSQL Operator deployment that assumes [dynamic storage][12] and a StorageClass named **standard**. User-provided values are allowed by the script to override these defaults.
+
+You can download the quickstart script and set it to be executable with the following commands:
+
+```
+wget <https://raw.githubusercontent.com/CrunchyData/postgres-operator/master/examples/quickstart.sh>
+chmod +x ./quickstart.sh
+```
+
+Then you can execute the quickstart script:
+
+```
+./examples/quickstart.sh
+```
+
+After the script prompts you for some basic information about your Kubernetes cluster, it performs the following operations:
+
+  * Downloads the Operator configuration files
+  * Sets the **$HOME/.pgouser** file to default settings
+  * Deploys the Operator as a Kubernetes [Deployment][13]
+  * Sets your **.bashrc** to include the Operator environmental variables
+  * Sets your **$HOME/.bash_completion** file to be the **pgo bash_completion** file
+
+
+
+During the quickstart's execution, you'll be prompted to set up the RBAC rules for your Kubernetes cluster. In a separate terminal, execute the command the quickstart command tells you to use.
+
+Once the script completes, you'll get information on setting up a port forward to the PostgreSQL Operator pod. In a separate terminal, execute the port forward; this will allow you to begin executing commands to the PostgreSQL Operator! Try creating a cluster by entering:
+
+```
+pgo create cluster mynewcluster
+```
+
+You can test that your cluster is up and running with by entering:
+
+```
+pgo test mynewcluster
+```
+
+You can now manage your PostgreSQL databases in your Kubernetes environment! You can find a full reference to commands, including those for scaling, high availability, backups, and more, in the [documentation][14].
+
+* * *
+
+_Parts of this article are based on[Get Started Running PostgreSQL on Kubernetes][15] that the author wrote for the Crunchy blog._
+
+--------------------------------------------------------------------------------
+
+via: https://opensource.com/article/19/3/how-run-postgresql-kubernetes
+
+作者：[Jonathan S. Katz][a]
+选题：[lujun9972][b]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]: https://opensource.com/users/jkatz05
+[b]: https://github.com/lujun9972
+[1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/cube_innovation_process_block_container.png?itok=vkPYmSRQ (cubes coming together to create a larger cube)
+[2]: https://www.postgresql.org/
+[3]: https://kubernetes.io/
+[4]: https://opensource.com/article/19/2/scaling-postgresql-kubernetes-operators
+[5]: https://github.com/CrunchyData/postgres-operator
+[6]: https://crunchydata.github.io/postgres-operator/stable/installation/#quickstart-script
+[7]: https://www.gnu.org/software/wget/
+[8]: https://kubernetes.io/docs/tasks/tools/install-kubectl/
+[9]: https://kubernetes.io/docs/concepts/storage/storage-classes/
+[10]: https://kubernetes.io/docs/reference/access-authn-authz/rbac/
+[11]: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/
+[12]: https://kubernetes.io/docs/concepts/storage/dynamic-provisioning/
+[13]: https://kubernetes.io/docs/concepts/workloads/controllers/deployment/
+[14]: https://crunchydata.github.io/postgres-operator/stable/#documentation
+[15]: https://info.crunchydata.com/blog/get-started-runnning-postgresql-on-kubernetes