... from Crunchy Data, … Crunchy Data is the provider of Crunchy Certified PostgreSQL, an open source PostgreSQL 9.5 distribution including popular extensions such as PostGIS and enhanced audit logging capability. 3 High Availability with Crunchy-watch. Fortunately, the Crunchy PostgreSQL Operator is prepared for this. Kubernetes-Native, containerized PostgreSQL-as-a-Service for your choice of public, private, or hybrid cloud. Promotes the selected replica to begin accepting write queries. We thought that we would demonstrate some of the features in this latest version over the next few weeks, which includes support for manual database failover, storage selection, node (or server) selection preference, and many goodies that make it easier to manage a large PostgreSQL cluster. Crunchy Bridge Overview. For enterprises requiring dedicated PostgreSQL support, Crunchy provides on-premise PostgreSQL professional services and PostgreSQL training. Like what you're reading? After a failover, the crunchy-watch will continue to watch the new master for a failure as before the first failover. Crunchy PostgreSQL Operator > Using the pgo Client > pgo Client Reference > pgo failover pgo failover pgo failover. 5 For example, Amazon Web Services (AWS) Elastic Block Storage (EBS) general-purpose (gp2) storage classes as well as AWS direct-attached storage do not offer failover across AWS Availability Zones. Crunchy Bridge delivers a fully managed cloud Postgres service available on multiple clouds so you can focus on your application, not your database. The first steps in using the backup container are to create a Persistent Volume (PV), and then the Persistent Volume Claim (PVC). Within the example, you would specify your master and slave service names. Explore key features of high availability, full customizability, and disaster recovery. Performs a manual failover. . With built-in high-availability, automated failover, and disaster recovery support, the Crunchy … Home; Cloud. Deletion of the master pod will initiate a failover. Both the, and the grafana web application are started within the crunchy-metrics pod as found, When combined with Crunchy’s Secure Enterprise Support, Crunchy Certified PostgreSQL provides enterprises with an open source and trusted relational database management solution backed by enterprise support from leading experts in PostgreSQL technology. Backups are performed as a Kubernetes job. There is an example of using crunchy-pgbadger here. Originally, stored data was connected to servers in very basic configurations: either point-to-point or cross-coupled. The crunchy-watch container is meant to watch a given master and test whether the master can be reached or not. Configuring a production environment to utilize the PostgreSQL Kubernetes Operator is a large topic that is unfortunately out of scope for this article, but there are some instructions to help get you started with the PostgreSQL Operator project. Upgrading the Crunchy PostgreSQL Operator from Version 3.5 to 4.6.1. Read up on the latest product launches and company news from Crunchy Data. An example of a pod that includes the crunchy-collect container is here. ... and make sure to avoid overwriting any existing data storage. For enterprises requiring dedicated PostgreSQL support, Crunchy provides on-premise PostgreSQL professional services and PostgreSQL training. Full product documentation of your favorite PostgreSQL tools. That's it: the PostgreSQL Kubernetes Operator handles the rest of the failover operation! When crunchy-postgres begins executions, it looks for a specified backup archive location. If found, it will use the backup archive, from the. pgpool pod logs: 2018-07-24 13:48:21: pid 15: LOG: failover: set new primary node: -1 2018-07-24 13:48:21: pid 37: FATAL: pgpool is not accepting any new connections 2018-07-24 13:48:21: pid 37: DETAIL: all backend nodes are down, pgpool requires at least one valid node 2018-07-24 13:48:21: pid 37: HINT: repair the backend nodes and restart pgpool failover done. In this follow up several new advanced features are highlighted from the Crunchy PostgreSQL for Kubernetes. crunchy-prometheus - provides a prometheus datastore for metrics collection; crunchy-pgbouncer - provides a simple form of automated failover as well as basic pg_bouncer connection pooling; crunchy-watch - provides a form of automated failover by watching a PostgreSQL cluster’s master and triggers a failover on a slave if the master is not responding The BACKUP_PATH environment variable is used by the crunchy-postgres container to specify the database backup archive location to use for a restore. As we have gained experience working with PostgreSQL in containerized cloud native environments, we saw  the need for a more complete PostgreSQL “toolbox”. Over the coming months, more advanced features are planned for addition within the Crunchy Containers suite. Advanced Crunchy Containers for PostgreSQL, , the basics of the Crunchy PostgreSQL containers were presented demonstrating how easy and efficient it is to run PostgreSQL in containers such as Docker. Crunchy Bridge delivers a fully managed cloud Postgres service available on multiple clouds so you can focus on your application, not your database. Re-label the selected replica instance to use the primary service labels. Both the prometheus database and the grafana web application are started within the crunchy-metrics pod as found here. The restore feature uses the rsync utility to copy the backup archive files from the NFS directory to the /pgdata volume used by the new database container. Integrated high-availability PostgreSQL solution for enterprises with "always on" data requirements. Our goal is to build not only a great PostgreSQL container but also an entire set of microservices geared towards managing and monitoring your deployed PostgreSQL containers. Provision a new replica to replace the old replica instance. Crunchy Certified PostgreSQL has received the international Common Criteria certification at the EAL2+ level, making Crunchy Certified PostgreSQL the only 100% open source RDBMS with Common Criteria certification. Within the example, you would specify your master and slave service names. Crunchy Data is committed to 100% open source technology. A PostgreSQL Automated Failover Container. The first steps in using the backup container are to create a Persistent Volume (PV), and then the Persistent Volume Claim (PVC). A failover example is found here. An example of restoring from a database archive is found here. Your application is able to connect and interact with the replica database after it becomes the primary. When crunchy-postgres begins executions, it looks for a specified backup archive location. ... How to Perform Failover with the PostgreSQL Kubernetes Operator. A failover example is found here. PostgreSQL database administrators often use a popular utility called pgbadger to examine the logs of a PostgreSQL database. A data center is lost; There may also be downtime events that are due to the normal case of operations, such as performing a minor upgrade, security patching of operating system, hardware upgrade, or other maintenance. Your primary is completely offline in order to avoid "multiple primaries" from being active (also known as the ". The crunchy-watch container makes use of a Service Account to send commands to Openshift such as getting a list of pods or changing the label of a pod. One means of causing this failover is to create a predefined trigger file on the slave, after which, the PostgreSQL server will alter its configuration to become a read-write master database. The PostgreSQL Operator Client, aka pgo, is the most convenient way to interact with the PostgreSQL Operator.pgo provides many convenience methods for creating, managing, and deleting PostgreSQL clusters through a series of simple commands. Crunchy Bridge delivers a fully managed cloud Postgres service available on multiple clouds so you can focus on your application, not your database. This command flag causes a crunchy-collect container to be added to the database cluster pod and enables metrics collection on that database pod. Within the example, you would specify your master and slave service names. For this to work, you will need to configure the Crunchy metrics example as found in the Crunchy Container Suite. Crunchy Data recently released version 2.6 of the PostgreSQL Kubernetes Operator, a powerful controller that follows the Kubernetes Operator pattern that enables users to provision and manage thousands of PostgreSQL databases at scale. The Openshift backup job example is found here. If you want to check on how the status of the failover, you can run the following command: where you can replace sample with the name of your cluster. Backups require a persistent volume type such as NFS be mounted by the backup job. Performs a manual failover. Tutorials Katacoda Learning Portal. First, you should determine which of your replicas are available to fail over to. The crunchy-collect container can be placed within a database pod to begin the collection of 30+ PostgreSQL metrics. Demo Data that is used in Crunchy Data Demos and Workshop that can be freely redistributed HTML Apache-2.0 2 4 10 0 Updated Aug 27, 2020. pgloader Forked from dimitri/pgloader Migrate to PostgreSQL in a single command! An example of a pod that includes the crunchy-collect container is, The collected metrics are pushed to the crunchy-prometheus container using the. utility, to base a new database upon. This toolbox would allow for the administration and monitoring of deployed PostgreSQL containers. Crunchy Data provides commercial support for PostgreSQL on a subscription basis, ensuring that enterprises of all sizes have access to certified software packages, updates, bug fixes, security patches, and 24x7x365 technical support from PostgreSQL experts. Read up on the capabilities provided by Crunchy Bridge, including supported extensions, pricing, and features. . ... and to automatically heal after a failover event. If found, it will use the backup archive, from the pg_basebackup utility, to base a new database upon. This can be accomplished with the following command: where sample-cetj is the name of your failover target. The pgbadger utility is written in Perl and is a command line utility which reads the PostgreSQL log files and generates a HTML/Javascript output file that containers graphs and detailed analysis. Using the pgo Client. Crunchy started working with Red Hat initially to spin up PostgreSQL containers and clusters. A job is meant to be a one-time execution of something, similar to a batch job. Integrated high-availability PostgreSQL solution for enterprises with "always on" data requirements. Database management can require complex, multistep processes for provisioning, failover, backup/restore, and many other tasks. This document describes how to deploy PostgreSQL on Kubernetes using the PostgreSQL Kubernetes Operator from Crunchy Data and the Diamanti Enterprise Kubernetes Platform. Whether you're in a single or multi-datacenter environment, Crunchy HA PostgreSQL will keep your PostgreSQL clusters available through typical outages and accurately detect when a cluster should initiate a failover to a replica. This allows real-time failover to be independent from the PostgreSQL Operator, which is the core component of Crunchy PostgreSQL for Kubernetes. March 27, 2018 If not, crunchy-watch will create a trigger file on the first slave it finds. These advanced features were provided to allow enterprise customers the ability to perform basic administration tasks common to running a PostgreSQL database or cluster. Crunchy Data announces Crunchy PostgreSQL for Kubernetes 4.2 achieved “auto pilot” capability level as part of Red Hat OpenShift Operator Certification. Crunchy Data recently released version 2.6 of the PostgreSQL Kubernetes Operator, Fortunately, the Crunchy PostgreSQL Operator is prepared for this. Crunchy-watch also changes  the slave’s Openshift labels to that of the master. This way, the clients will find the new master using the existing master service as before. If you need to failover again in the future, you will need to clear out the pgtask that was used to run the previous failover, which can be handled with the following command: And that's it - you can now manage failover with the PostgreSQL Kubernetes Operator! Crunchy Bridge delivers a fully managed cloud Postgres service available on multiple clouds so you can focus on your application, not your database. Get started with Crunchy Bridge by creating your account and provision your production ready database on the cloud of your choice. The Crunchy Container Suite can be found here: https://github.com/crunchydata/crunchy-containers. . Your chosen replica database is both accessible and can handle the writes that will be sent at it without causing significant performance degradation. We will start with failover, an important concept for being able to maintain a high-availability database cluster. Once the failover is complete, you will see that the replica is promoted to become the primary, and there is a new replica pod now available. To perform the examples with a pre-existing cluster, we will use a cluster called sample that is created with the following command: An essential feature of being able to maintain a high-availability database cluster is being able to fail over to a replica database should the primary database become inaccessible. A fully managed cloud Postgres service that allows you to focus on your application, not your database. Why is failover important in the data center? Metrics are stored within a prometheus time-series database. Some containers are in development and not open sourced at this time, they include: In the following sections we will discuss some of these container features. Collecting PostgreSQL metrics allows a database administrator a means of looking at trends of data and resource usage within a database. Last week I was on a call with someone giving an overview of Crunchy Bridge, our multi-cloud fully managed database as a service.During the call they asked about what was the best way to get a sense of how their database was doing, a health check if you will. A job is meant to be a one-time execution of something, similar to a batch job. When combined with Crunchy’s Secure Enterprise Support, Crunchy Certified PostgreSQL provides enterprises with an open source and trusted relational database management solution backed by enterprise support from leading experts in PostgreSQL technology. The complete set of  open sourced Crunchy PostgreSQL containers include: These containers are pre-built and can be found on DockerHub. Kubernetes-Native, containerized PostgreSQL-as-a-Service for your choice of public, private, or hybrid cloud. Documentation Read up on the capabilities provided by Crunchy Bridge, including supported extensions, pricing, and features. A fully managed cloud Postgres service that allows you to focus on your application, not your database. A data center is lost; There may also be downtime events that are due to the normal case of operations, such as performing a minor upgrade, security patching of operating system, hardware upgrade, or other maintenance. PostgreSQL database administrators often use a popular utility called. Synopsis. The crunchy-pgbadger container provides a small http server (in golang) which you can invoke which will in turn invoke pgbadger. The grafana graphing product is included in the crunchy-grafana container. Within the crunchy-backup container, the PostgreSQL backup utility, pg_basebackup, is executed on an existing database container. Crunchy Data announces open source Crunchy PostgreSQL for Kubernetes 4.2.0, which simplifies deploying high-availability PostgreSQL clusters. Documentation Read up on the capabilities provided by Crunchy Bridge, including supported extensions, pricing, and features. Home; Cloud. Collecting PostgreSQL metrics allows a database administrator a means of looking at trends of data and resource usage within a database. Learn more at, Crunchy Announces Open Source Multi-Level Security Enabled PostgreSQL, PostgreSQL Monitoring Within Red Hat OpenShift Container Platform, https://github.com/crunchydata/crunchy-containers. The restore feature uses the rsync utility to copy the backup archive files from the NFS directory to the /pgdata volume used by the new database container. Learn PostgreSQL by example with interactive courses designed by our experts. Without the --delta option, the target of a pgBackRest restore must be an empty folder. Crunchy Data is a leading provider of trusted open source PostgreSQL and PostgreSQL support, technology and training. Backups require a persistent volume type such as NFS be mounted by the backup job. In an earlier blog, the basics of the Crunchy PostgreSQL containers were presented demonstrating how easy and efficient it is to run PostgreSQL in containers such as Docker. We believe in bringing the power and efficiency of open source PostgreSQL to security conscious organizations. If you lose the master due to a hardware failure or any other reason, you can cause one of the slaves to take over the master’s responsibility. The BACKUP_PATH environment variable is used by the crunchy-postgres container to specify the database backup archive location to use for a restore. If your primary is part of a cluster, and your cluster uses software to manage auto-failover, like Crunchy HA, Patroni, or pacemaker/corosync, your cluster control software should detect a failure, and properly failover to one of the replicas. Environment variables for the crunchy-backup container are used to specify the database for which a backup is performed as well as the database credentials to use for the backup. The latest release of the Crunchy PostgreSQL Operator brings significant improvements to the high-availability and disaster recovery features needed to run PostgreSQL in … This solution allows you to examine the logs of a PostgreSQL database. Crunchy HA PostgreSQL uses Crunchy CertifiedPostgreSQL to support secure, … Crunchy Bridge delivers a fully managed cloud Postgres service available on multiple clouds so you can focus on your application, not your database. Occasionally it doesn't and you will have to manually stop the failed primary/standalone. Like what you're reading? Within the crunchy-backup container, the PostgreSQL backup utility, pg_basebackup, is executed on an existing database container. Browse to the pgbadger endpoint using http://>:10000/api/badgergenerate. You can find detailed installation instructions for version 2.6 here, including where to find packages containing the PostgreSQL Kubernetes Operator as well as a quickstart script that will perform a lot of the heavy lifting of installation and setup. There is an example of using crunchy-pgbadger, The crunchy-watch container makes use of a. to send commands to Openshift such as getting a list of pods or changing the label of a pod. Within the crunchy-postgres container is a restore feature. Learn PostgreSQL by example with interactive courses designed by our experts. environment, Crunchy PostgreSQL HA Suite will keep your PostgreSQL clusters available through typical outages and accurately detect when a cluster should initiate a failover to a replica. We all know how easy is setting up an Amazon RDS-based PostgreSQL cluster with automatic failover that just works out of the box. Get started with Crunchy Bridge by creating your account and provision your production ready database on the cloud of your choice. Read up on the latest product launches and company news from Crunchy Data. Fig. Stay informed by subscribing for our newsletter! Read up on the latest product launches and company news from Crunchy Data. One of our goals with this container toolbox is to take advantage of container orchestration technology such as Kubernetes and OpenShift to also aide the DBA in  managing a potentially large deployment of PostgreSQL instances. 4 “Crunchy PostgreSQL for Kubernetes 4.2 Receives Red Hat OpenShift Operator Certification.” Crunchy Data, 10 Feb. 2020. Provisioning the new replica can take some time depending on how large your data set is. The crunchy-watch container makes use of a Service Account to send commands to Openshift such as getting a list of pods or changing the label of a pod. shutdown host … Backups are stored using a naming convention as follows: You can keep as many backups as your file system will allow and the contents of the backup directory are left for your operations team to manage using normal file system procedures.