Pgpool Vs Patroni

使用pgpool ii作为负载平衡器可以获得性能吗? 对少量的连接来说,不会有性能提升。如果有大量的用户连接,YES。运行自己的测试来确定是否需要使用pgpool。 Muhammad Usama. Aws Pgbouncer. pgpool-IIとは・・・ postgreSQLの高速化と高信頼化を目的としたミドルウェアである。pgpool-IIは、クライアントとpostgreSQLの間に入る形(プロキシ形式)で動作する。なお、データベースクライアントはpostgreSQLサーバへ接続するのではなく、 pgpool-IIへ接続することになる。簡単に言えばpostgreSQLプロキシ. VMs - Platform independent vs. Transactions within PostgreSQL are scoped to a single client and so dispatching individual queries within a single transaction across multiple, random clients will cause big problems in your app and not work. pgpool-IIを試したいが、公式ドキュメントをすべて読むのが大変という方向けに、とりあえず動かすまでの基本知識と導入手順をまとめる。 pgpool-IIとは. /* The top-level package collection of nixpkgs. Let's now review some of the clustering options we have in PostgreSQL. You also need some software that can reliably detect that the primary server is down and promote a standby. My saas business is starting to get traction (it’s generating enough on which to live comfortably), and I’ve also had a few availability incidents caused by my old VPS provider (Backbone AG - I ditched them a few weeks ago, and I suppose everyone else did too because they sent around emails last week saying they were quitting the VPS business). allitebooks. Vous devez avoir un compte Developpez. PostgreSQL has built-in support for creating hot standby nodes and keeping them up-to-date with streaming replication; alas, there is no out-of-box failover. A Patroni PostgreSQL cluster is composed of many individual PostgreSQL instances running on bare metal, containers or virtual machines. 1 scheduled to be released this autumn. Pgbouncer aurora. Pgpool-II is a middleware that works between PostgreSQL servers and a PostgreSQL database client. And bounce then accordingly at the time failover in failover script pointing to new master. Install PostgreSQL. Benchmarking TimescaleDB vs. Repmgr ou pgPool ne supportent ni le fencing, ni le watchdog, ni de (vrai) quorum. Because the configuration in this guide uses private IP addresses to communicate between Linodes in the same data center, this setup may not meet certain Highly Available requirements. 102 node2 slave 192. So many types of replication, so little time! What kind of PostgreSQL replication should you use? I want a standby server to take over if the primary fails. We will also spin up pgpool automatically via gitlab for out of the bo horizontal scaling. The only reason we chose it is that at the time it was the only native layer 7 postgres HA proxy to support partition resistance (the watchdog quorum control part is actually reasonably robust and passed all the network partitioning tests that mattered to us). 19 are now officially released. In general, we recommend Patroni over pgpool-II because it is less invasive. Both products are written in C and seem to be actively maintained, with pgpool-II seeing more action as it also has a higher number of ambitious features. Bring Your Own Cloud (BYOC) vs. Russia 2018 - 5-7 февраля, Москва, МГУ Тема: PostgreSQL High Availability кластер для Enterprise Докладчики: Вадим Яценко. yaml中PG_ROOT_PASSWORD或者PG_PASSWORD的值, 使用pgpool的pg_md5 指令生成密码(pg_md5. Мадан Кумар (Madan Kumar) из ScaleGrid разбирает плюсы/минусы и тестирует Patroni, делает выводы по HA. Pgpool-II saves connections to the PostgreSQL servers, and reuse them whenever a new connection with the same properties (i. Pgpool-II ScaleGrid・ Mar 23. For an example of a Docker-based deployment with Patroni, see Spilo, currently in use at Zalando. I'm not sure in which version it is introduced, but "watchdog" feature that is now embedded in pgpool does everything needed for automatic fialover and real HA. 的方式安装 postgres 用户名和密码修改 如果是通过pgpool连接数据库的话,必须在pool_passwd配制postgres的用户名和密码 部署前 可以设置默认用户postgres和PG_USER对应用户的密码 修改values. Simultaneous translation of all the talks from Russian to English and back is provided. Patroni is a small Python daemon to fill that niche, enabling anyone in a few simple steps to create high availability PostgreSQL clusters based on hot standby and streaming replication. Patroni runs on the same machine as the databases so it can control the postgresql. SEPTEMBER 16, 2019. From: Peter J. Russia 2018 - 5-7 февраля, Москва, МГУ Тема: PostgreSQL High Availability кластер для Enterprise Докладчики: Вадим Яценко. postgresql 高可用 patroni + etcd 之二 patroni os: centos 7. pgDay Asia 2016 and pgDay Asia 2017 would not had been possible without great speakers and wonderful audience. However, we did not have enough time to test against more scenario. PostgreSQL and Pgpool Architecture. Pgpool-II 3. Pgpool-II is a middleware that works between PostgreSQL servers and a PostgreSQL database client. 因为以下原因,你没有权限编辑本页: 您刚才请求的操作只有这个用户组中的用户才能使用: 用户 该页面已被保护以防止. When talking about separate pooling servers in Postgres context, two products stand out: PgBouncer and pgpool-II. However, without further activity, that surviving server will be a streaming replication standby, that is a read-only server. High Scalability. It can run on VMs (or bare-metal), docker containers or kubernetes. Patroni has REST API providing a health-checks for load-balancers. And bounce then accordingly at the time failover in failover script pointing to new master. Мадан Кумар (Madan Kumar) из ScaleGrid разбирает плюсы/минусы и тестирует Patroni, делает выводы по HA. PostgreSQL is already a robust database server, fast, reliable, and ready to rock. 使用patroni 解决hasura graphql-engine pg 数据库ha的问题 9. allitebooks. The following command connects to a database under a specific user. The central component is pgpool and I had to make myself very intimate with it. pgDay Asia 2016 and pgDay Asia 2017 would not had been possible without great speakers and wonderful audience. Public Cloud, Migrations, Database Combinations & Top Reasons Used Requesting Feedback We are looking for good dates to host PostgresConf Philly in July/August 2019 and we are actively reviewing new markets for other Postgres Conference events including Texas, Vancouver B. The third PGConf APAC will be held from 22 nd – 23 rd March, 2018. Apr 7, 2016 - PostgreSQL tutorials and references. Read on to find out how easy and versatile this feature is! A Little Theory. PgBouncer, however, is not the only option for PostgreSQL connection pooling – in our next post, we will discuss Pgpool-II, which is probably the main competitor to PgBouncer. Patroni is trusted by various small and large companies, among them are Zalando, IBM Compose, TimescaleDB and, recently, Gitlab. For more information check out the following blog post >>. Patroni Included below is a comprehensive table detailing the results of all the tests we have performed on all three frameworks – PostgreSQL Automatic Failover (PAF), Replication Manager (repmgr) and Patroni. It is used by GitLab, Red Hat, IBM Compose and Zalando, among others. The examples in this guide assign the private IP addresses of the three. i am the leader with the lock Nov 12 07:50:19 DB1 patroni[411]: 2019-11-12 07:50:19,949 INFO: acquired session lock as a leader. The central component is pgpool and I had to make myself very intimate with it. Learn how to get the best performance and scale your PostgreSQL database with our weekly shows. Shared-storage: All nodes access the same storage with the same information. So many types of replication, so little time! What kind of PostgreSQL replication should you use? I want a standby server to take over if the primary fails. A Patroni PostgreSQL cluster is composed of many individual PostgreSQL instances running on bare metal, containers or virtual machines. It only takes a minute to sign up. In our setup we’ve used etcd for consensus management, which handles leader elections and decides the leader among a cluster of servers that are partitioned by network. Repmgr ou pgPool ne supportent ni le fencing, ni le watchdog, ni de (vrai) quorum. In all other cases it will return 503. Forum PostgreSQL. In this talk, first I will give an overview of Pgpool-II. Transactions within PostgreSQL are scoped to a single client and so dispatching individual queries within a single transaction across multiple, random clients will cause big problems in your app and not work. It can be used to setup replicated PostgreSQL cluster configurations in different ways, for different uses. com et être connecté pour pouvoir participer aux discussions. 7 处理故障转移和高可用 可以使用pgpool来解决的一些明显的问题是高可用性和故障转移. md 《[转载] 数据哪里去挖?大数据时代的反向操作~~2分钟教『找数据查资料』》 202004/20200403_04. com PostgreSQL Configuration Best Practices for Performance and Security. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul. Worry-free Postgres. In general, we recommend Patroni over pgpool-II because it is less invasive. This blog post describes how to deploy HAProxy on top of your PostgreSQL replication setup. Patroni Included below is a comprehensive table detailing the results of all the tests we have performed on all three frameworks – PostgreSQL Automatic Failover (PAF), Replication Manager (repmgr) and Patroni. In all other cases it will return 503. Etcd is a fault-tolerant, distributed key-value store that is used to store the state of the Postgres cluster. There are many different ways you can use queries in MongoDB to find the data you need. PostgreSQL's streaming replication feature has been around for a few years now. If nothing happens, download GitHub Desktop and try. Stay tuned for our fourth post in this four-part series where we compare PgBouncer vs. repmgr Click To Tweet. 102 node2 slave 192. In this episode of Scaling Postgres, we discuss how Postgres is the world's best database, performance ramifications of subtransactions, the current state of sharding and safe schema changes. Shared-nothing: Each node has its own storage, which may or may not have the same information as the other nodes, depending on the structure of our system. Re: A very puzzling backup/restore problem. However, without further activity, that surviving server will be a streaming replication standby, that is a read-only server. Top content on Cloud and Database as selected by the Technology Performance Pulse community. Patroni has REST API providing a health-checks for load-balancers. Shared-nothing: Each node has its own storage, which may or may not have the same information as the other nodes, depending on the structure of our system. pgpool_postgresql集群pgpool,云+社区,腾讯云 的方案,基本上不是原生的,大多是依靠第三方的公司来进行开发的,挂名的有那么几种 patroni, pgpool-ii,repmgr , 等等几种。 pgpool-ii 在安装适用中遇到很多问题,按理说一家日本公司做的东西应该靠谱,可惜问题太多. The examples in this guide assign the private IP addresses of the three. See more ideas about Sql tutorial, Sql server and Mysql php. Remote Python Development in Visual Studio Code & VS Code Remote Development: Lors de PyCon 2019, Microsoft a annoncé la sortie de plusieurs extensions qui permettent d'améliorer l'expérience utilisateur du développeur python via des "remote containers", du "remote ssh" ou du "remote WSL". Pgpool-II also can also run failover I am just wondering doing automatic failover using pgpool or repmgr? If pgpool can do the failover do I need to use repmgr? and use shell scripts to the promotion of new master?. It provides the following features. "TimescaleDB vs. repmgr Click To Tweet. This blog post describes how to deploy HAProxy on top of your PostgreSQL replication setup. This means that when you set up Hot Standby, you're. 7 处理故障转移和高可用 可以使用pgpool来解决的一些明显的问题是高可用性和故障转移. Re: LocalTransactionId vs txid_current, Tom Lane; PGPool version 4. pgpool Heimdall Data - (Proprietary) Provides a multi-vendor solution for database caching, connection pooling, load balancing, query routing, analytics and security. Pgpool-II 3. Welcome to share your experience with our guests! The most demanded topics for the talks are: Postgres in business applications. pgpool_postgresql集群pgpool,云+社区,腾讯云 的方案,基本上不是原生的,大多是依靠第三方的公司来进行开发的,挂名的有那么几种 patroni, pgpool-ii,repmgr , 等等几种。 pgpool-ii 在安装适用中遇到很多问题,按理说一家日本公司做的东西应该靠谱,可惜问题太多. Pgpool-II 4. 例如,使用pg_dump和pg_restore做备份和恢复,使用Patroni实现高可用和故障转移,使用Pgpool实现集群读取的负载均衡。由于TimescaleDB的操作类似于PostgreSQL,用户的学习曲线很低。. You may implement connection pooling using your native application connection pooler (if there is one available) or through an external connection pooler such as PgBouncer and pgPool-II. psql -d database -U user -W. pdf), Text File (. Introduction to PostgreSQL Automatic Failover Published on 2018-02-07 by Stefan Fercot. 在这种情况下,在我们的世界中. PostgreSQL vs MySQL PostgreSQL will eat MySQL for lunch :) Ten times out of ten, PostgreSQL will eat MySQL for lunch (and twice on Sunday). Install Postgres on three Linodes in your setup. Posts Tagged ‘postgreSQL’ « Предыдущие записи. TimescaleDB(700MB) = 59 倍 例如,使用 pg_dump 和 pg_restore 做备份和恢复,使用 Patroni 实现高可用和故障转移,使用 Pgpool 实现集群读取的负载均衡。. Google has many special features to help you find exactly what you're looking for. And bounce then accordingly at the time failover in failover script pointing to new master. Receive the best content curated from around the web. Please visit our web site to file bug reports or submit patches. It is used by GitLab, Red Hat, IBM Compose and Zalando, among others. Fortunately, in the time since I had last looked for a solution, two new, good candidates arrived on the scene: Stolon and Patroni. Summary: in this tutorial, we give you a list of common psql commands that helps you query data from PostgreSQL database server faster and more effective. Patroni is a template for you to create your own customized, high-availability solution using Python and - for maximum accessibility - a distributed configuration store like ZooKeeper, etcd, Consul or Kubernetes. Building a Lightweight High Availability Cluster Using RepMgr Stephan M¨uller June 29, 2018. Note that this is just a *mirror* - we don't work with issues/pull requests on github. A look at some of the ways available to deploy Postgres in a Kubernetes cloud environment, either in small scale using simple configurations, or in larger scal…. Message not available. As described by Magnus Hagander during his great talk about "PostgreSQL Replication in 2018" at the last FOSDEM event, PAF (aka. I wrote this as a response to a lack of high-level documentation that I needed to make decisions around deploying PostgreSQL and PgPool. Dans la liste, seuls PAF et patroni semblent être suffisamment fiables. Please visit our web site to file bug reports or submit patches. patroni:8008/replica will respond with http status code 200 only if node is running as replica. 6 are no longer included in the. Sign up to join this community. The central component is pgpool and I had to make myself very intimate with it. Managing High Availability in #PostgreSQL - Part III: Patroni vs. Welcome to share your experience with our guests! The most demanded topics for the talks are: Postgres in business applications. Receive the best content curated from around the web. username, database, protocol. Мы продолжаем знакомить вас с самыми интересными новостями по PostgreSQL. See more ideas about Sql tutorial, Sql server and Mysql php. 6이라 그런지 PGPool 설치시 설치가 되지는 않았다. Connection Pooling. PostgreSQL’s streaming replication feature has been around for a few years now. 18 patroni: 1. Want to be notified of new releases in digoal/blog ? If nothing happens, download GitHub Desktop and try again. io review 0 user reviews, 0 testimonials, 8 products, 2 promotions, 4 social accounts, Alexa #118434, listed 2018 (#27338). 21 is the final release of the 3. Welcome to share your experience with our guests! The most demanded topics for the talks are: Postgres in business applications. PostgreSQL and Pgpool Architecture. InfluxDB Part-2" is published by gavin. Vous devez avoir un compte Developpez. 102 node2 slave 192. InfluxDB for Time-Series Data - Free download as PDF File (. EDB Failover Manager with pgpool HA • EDB Failover Manager manages the failover of database • pgpool has it own HA which only manages failure of pgpool • pgpool also manages a virtual IP which can shift to 2nd pgpool node if there is a failover • No split brain at pgpool level as at a time only one node will have virtual IP and hence. I don't benefit from this at all, but, if you're a PostgreSQL user, DBA, programmer, hacker, etc. Russia – международная техническая конференция по открытой СУБД PostgreSQL, ежегодно. SEPTEMBER 16, 2019. The config passed to the pool is also passed to every client instance within the pool when the pool creates that client. Dernier message le 02/05/2020. Bring Your Own Cloud (BYOC) vs. For an example of a Docker-based deployment with Patroni, see Spilo, currently in use at Zalando. 6 are no longer included in the. Available as open source, as on-prem enterprise software, & in the cloud, built into Azure Database for PostgreSQL. Pgpool-II speaks PostgreSQL's backend and frontend protocol, and relays messages between a backend and a frontend. PostgreSQL is already a robust database server, fast, reliable, and ready to rock. Re: PGPool version 4. , and Seattle. So many types of replication, so little time! What kind of PostgreSQL replication should you use? I want a standby server to take over if the primary fails. There are many different ways you can use queries in MongoDB to find the data you need. Vous devez avoir un compte Developpez. TimescaleDB vs. The Citus extension to Postgres distributes data & queries across nodes so your database can scale and queries are fast. EDB Postgres en cloud Deployment options for Postgres in the cloud. Learn how to get the best performance and scale your PostgreSQL database with our weekly shows. Daniel Westermann's Blog October 2016 How to destroy your performance: PL/SQL vs SQL. Patroni is trusted by various small and large companies, among them are Zalando, IBM Compose, TimescaleDB and, recently, Gitlab. When you use PostgreSQL in production, you need to have reliability and scalability. The only reason we chose it is that at the time it was the only native layer 7 postgres HA proxy to support partition resistance (the watchdog quorum control part is actually reasonably robust and passed all the network partitioning tests that mattered to us). See more ideas about Sql tutorial, Sql server and Mysql php. Привет, Хабр! Встала передо мной недавно задача: настроить максимально надежный кластер серверов PostgreSQL версии 9. If nothing happens, download GitHub Desktop and try. Benchmarking TimescaleDB vs. pgpool-IIを試したいが、公式ドキュメントをすべて読むのが大変という方向けに、とりあえず動かすまでの基本知識と導入手順をまとめる。 pgpool-IIとは. Repmgr ou pgPool ne supportent ni le fencing, ni le watchdog, ni de (vrai) quorum. I wasn't prepared to switch from pgbouncer to pgpool, so I looked for other options. pgpool-adm : PCP Command들을 실행하기 위한 Extention. Take a look at this post - it'll help for sure. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul. 1810 (Core) 内核版本:3. The master returns a 200 response, while the replicas return a 503. Install PostgreSQL. Stay tuned for our fourth post in this four-part series where we compare PgBouncer vs. Patroni has REST API providing a health-checks for load-balancers. PostgreSQL is a powerful, open source object-relational database system. query on the first available idle client. Postgres uses write-ahead logging (WAL) to continuously archive database transactions. You need to depend on some middle wares like pgpool or pgbouncer. Pgpool-II is a middleware that works between PostgreSQL servers and a PostgreSQL database client. Worry-free Postgres. 中间件实现:pgpool、pgcluster、slony、plploxy. Мадан Кумар (Madan Kumar) из ScaleGrid разбирает плюсы/минусы и тестирует Patroni, делает выводы по HA. postgresql 12对分区做了很多改进。. Daniel Westermann's Blog October 2016 How to destroy your performance: PL/SQL vs SQL. Both products are written in C and seem to be actively maintained, with pgpool-II seeing more action as it also has a higher number of ambitious features. High Scalability. Benchmarking TimescaleDB vs. In this post, we will discuss its most popular alternative - Pgpool-II. Managing High Availability in PostgreSQL - Part III: Patroni. 5k Likes, 1,008 Comments - Linda Evangelista (@lindaevangelista) on Instagram: “♥️♥️♥️ Dying!!! ♥️♥️♥️🙏🏻 @iamcardib 🙏🏻♥️♥️♥️ Regram from @diet_prada #JimmyFallon @jimmyfallon…”. 的方式安装 postgres 用户名和密码修改 如果是通过pgpool连接数据库的话,必须在pool_passwd配制postgres的用户名和密码 部署前 可以设置默认用户postgres和PG_USER对应用户的密码 修改values. 6-1, Adrian Klaver; A very puzzling backup/restore problem, stan. А до этого, в ч. Repmgr ou pgPool ne supportent ni le fencing, ni le watchdog, ni de (vrai) quorum. I don't benefit from this at all, but, if you're a PostgreSQL user, DBA, programmer, hacker, etc. HA in PostreSQL Streaming replication Delayed replication DRBD replication Hot-standby vs cold-standby For Psql there is no native clustering Solution. It's based on 3rd party software (Stolon, pgpool-II, pgBouncer) which monitores and load balances between many nodes www. Etcd is a fault-tolerant, distributed key-value store that is used to store the state of the Postgres cluster. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul. 1 will implement the long-awaited features including statement level load balancing and automatic fail back. Message not available. Simultaneous translation of all the talks from Russian to English and back is provided. Aws Pgbouncer. Because the configuration in this guide uses private IP addresses to communicate between Linodes in the same data center, this setup may not meet certain Highly Available requirements. That's where HAProxy comes in. In the final post of this series, we will review the last solution, Patroni by Zalando, and compare all three at the end so you can determine which high availability framework is best for your. username, database, protocol. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, assim como para apresentar publicidade mais relevante aos nossos usuários. Distributed Replicated Block Device. PostgreSQL is already a robust database server, fast, reliable, and ready to rock. PostgreSQL has built-in support for creating hot standby nodes and keeping them up-to-date with streaming replication; alas, there is no out-of-box failover. Our database experts have written about pgpool-II and pgbouncer. PgBouncer, however, is not the only option for PostgreSQL connection pooling - in our next post, we will discuss Pgpool-II, which is probably the main competitor to PgBouncer. For the solution we have built, which we demonstrate in our webinar of October 10, we have used PgBouncer as our connection pooler. com PostgreSQL Configuration Best Practices for Performance and Security. false Madan Kumar K 2019-02-14 12:00 Mumbai 12:00 00:45 Ballroom 1 Talk 17-deep-dive-into-the-rds-postgresql-universe. High Availability (HA) is very critical to most enterprise application, the clients needs the ability to automatically reconnect with a secondary node when the master nodes goes down. Remote Python Development in Visual Studio Code & VS Code Remote Development: Lors de PyCon 2019, Microsoft a annoncé la sortie de plusieurs extensions qui permettent d’améliorer l’expérience utilisateur du développeur python via des “remote containers”, du “remote ssh” ou du “remote WSL”. Both products are written in C and seem to be actively maintained, with pgpool-II seeing more action as it also has a lot more features and pretty ambitious ones. Aws Pgbouncer. Stolon - PostgreSQL HA based on Consul or etcd, with Kubernetes integration. You also need some software that can reliably detect that the primary server is down and promote a standby. II разбирал Corosync/Pacemaker и repmgr. 1) Connect to PostgreSQL database. Install PostgreSQL. 例如,使用pg_dump和pg_restore做备份和恢复,使用Patroni实现高可用和故障转移,使用Pgpool实现集群读取的负载均衡。由于TimescaleDB的操作类似于PostgreSQL,用户的学习曲线很低。. When talking about separate pooling servers in Postgres context, two products stand out: PgBouncer and pgpool-II. Bring Your Own Cloud (BYOC) vs. “/master” — will return http status code 200 only if the node is holding the leader key in DCS. По-задълбочен поглед върху това как две водещи бази данни от времеви серии се подреждат по отношение на модел на данни, език на заявката. This means that when you set up Hot Standby, you're. Patroni has REST API providing a health-checks for load-balancers. - pgpool/pgpool2. The examples in this guide assign the private IP addresses of the three. Patroni provides a few REST API endpoints for master-replica health checks, which will return http status codes 200 or 503. upgrading the javavm inside the oracle database? to upgrading the javavm inside the topic openshift oracle ouch! patroni pem pgpool podman postgr postgres. Fortunately, in the time since I had last looked for a solution, two new, good candidates arrived on the scene: Stolon and Patroni. com PostgreSQL Configuration Best Practices for Performance and Security. It includes plenty of new features. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul Software ü Block Level Replication for DR ü Distributed Shared Storage getting popular Virtual IP or DNS or pgPool or pgBouncerApplications Site 1 20. However, without further activity, that surviving server will be a streaming replication standby, that is a read-only server. I'm not sure in which version it is introduced, but "watchdog" feature that is now embedded in pgpool does everything needed for automatic fialover and real HA. The central component is pgpool and I had to make myself very intimate with it. If you continue browsing the site, you agree to the use of cookies on this website. Stolon - PostgreSQL HA based on Consul or etcd, with Kubernetes integration. 4 patroni + etcd 是在一个postgrsql 开源大会上 亚信的一个哥们讲解的高可用方案。. Introduction to PostgreSQL Automatic Failover Published on 2018-02-07 by Stefan Fercot. Distributed Replicated Block Device. A core value proposition for running your PostgreSQL databases in a fully managed service such as Azure Database for Pos Python + Azure Database for PostgreSQL. Patroni Infographic. md 《PostgreSQL 查询当前执行中sql的执行计划 - pg_show_plans》. repmgr - Open-source tool suite to manage replication and failover in a cluster of PostgreSQL servers. Citus makes it simple to shard Postgres. The examples in this guide assign the private IP addresses of the three. pdf), Text File (. In all other cases it will return 503. Более подробно остановимся на современных молодых решениях, таких как repmgr, patroni, stolon. Мадан Кумар (Madan Kumar) из ScaleGrid разбирает плюсы/минусы и тестирует Patroni, делает выводы по HA. Patroni is a small Python daemon to fill that niche, enabling anyone in a few simple steps to create high availability PostgreSQL clusters based on hot standby and streaming replication. Both products are written in C and seem to be actively maintained, with pgpool-II seeing more action as it also has a higher number of ambitious features. username, database, protocol. Connection Pooling. Strong knowledge on PostgreSQL contribs (hstore, ltree, intarray, dblink, pg_trgm, pgcrypto, etc) and on. Patroni provides a few REST API endpoints for master-replica health checks, which will return http status codes 200 or 503. High Scalability. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Vous devez avoir un compte Developpez. The bots are capable both of managing the PostgreSQL database and updating the distributed consensus system (etcd in this case although Zookeeper, Consul, and the Kubernetes API, which is backed by etcd, are also perfectly fine options). Aws Pgbouncer. Pgpool-II speaks PostgreSQL's backend and frontend protocol, and relays messages between a backend and a frontend. head over to the blog of dbi services to read the full article: lifecycle linux locks logical replication logstash MariaDB migration minishift network nutanix off-topic openshift oracle ouch! patroni pem pgpool. Les deux solutions viables actuelles sont Patroni et Pacemaker/PAF, pour une raison claire: ils font de la HA correctement et pas avec des bouts de scotch ou en laissant l'administrateur développer lui même les points critique de l'archi. I don't benefit from this at all, but, if you're a PostgreSQL user, DBA, programmer, hacker, etc. The only reason we chose it is that at the time it was the only native layer 7 postgres HA proxy to support partition resistance (the watchdog quorum control part is actually reasonably robust and passed all the network partitioning tests that mattered to us). The Citus extension to Postgres distributes data & queries across nodes so your database can scale and queries are fast. Benchmarking TimescaleDB vs. Haproxy must rely only on http status codes. Promoting a new master server and failing over slaves sounds good, but your applications will need an easy way to keep track of the new master. Via Patroni, all of the Postgres nodes make use of etcd to keep the Postgres cluster up and running. Therefore, a database application (frontend) thinks that Pgpool-II is the actual PostgreSQL server, and the server (backend) sees Pgpool-II as one of its clients. Take a look at this post - it'll help for sure. Do not use pool. postgresql 高可用 patroni + etcd 之二 patroni os: centos 7. Patroni originated as a fork of Governor, the project from Compose. Pgpool-II saves connections to the PostgreSQL servers, and reuse them whenever a new connection with the same properties (i. A Patroni PostgreSQL cluster is composed of many individual PostgreSQL instances running on bare metal, containers or virtual machines. Apr 7, 2016 - PostgreSQL tutorials and references. Read on to find out how easy and versatile this feature is! A Little Theory. Pgpool-II 3. Remote Python Development in Visual Studio Code & VS Code Remote Development: Lors de PyCon 2019, Microsoft a annoncé la sortie de plusieurs extensions qui permettent d'améliorer l'expérience utilisateur du développeur python via des "remote containers", du "remote ssh" ou du "remote WSL". Please visit our web site to file bug reports or submit patches. High Scalability. Pgpool-II saves connections to the PostgreSQL servers, and reuse them whenever a new connection with the same properties (i. Google has many special features to help you find exactly what you're looking for. Release notes for versions prior 3. username, database, protocol version) comes in. 使用pgpool ii作为负载平衡器可以获得性能吗? 对少量的连接来说,不会有性能提升。如果有大量的用户连接,YES。运行自己的测试来确定是否需要使用pgpool。 Muhammad Usama. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul. Pgpool-II 3. TimescaleDB срещу InfluxDB: цел, изградена по различен начин за данни от времеви серии. InfluxDB for Time-Series Data. Записи о postgreSQL написанные j3qx. Once your cluster setup is complete, Patroni will actively monitor the cluster and ensure it's in a healthy state. For more information check out the following blog post >>. HA in PostreSQL Streaming replication Delayed replication DRBD replication Hot-standby vs cold-standby For Psql there is no native clustering Solution. 6이라 그런지 PGPool 설치시 설치가 되지는 않았다. pdf), Text File (. In our setup we’ve used etcd for consensus management, which handles leader elections and decides the leader among a cluster of servers that are partitioned by network. Load balancing have many uses but in the context of this talk, we use them as a way to redirect load to different servers in the cluster in case of failure LOAD BALANCING www. Dernier message le 04/05/2020. I'm not sure in which version it is introduced, but "watchdog" feature that is now embedded in pgpool does everything needed for automatic fialover and real HA. Dream Astro Meanings. When you use PostgreSQL in production, you need to have reliability and scalability. This can be accomplished with heartbeat. A look at some of the ways available to deploy Postgres in a Kubernetes cloud environment, either in small scale using simple configurations, or in larger scal…. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul. I wasn't prepared to switch from pgbouncer to pgpool, so I looked for other options. See more ideas about Sql tutorial, Sql server and Mysql php. Summary: in this tutorial, we give you a list of common psql commands that helps you query data from PostgreSQL database server faster and more effective. The system uses these log entries to perform point-in- time restoration from archives and to keep the standby server up to date. We have a special focus on content for developers since your architecture and usage is the key to getting the most performance out of PostgreSQL. Take a look at this post - it'll help for sure. Honza's IT blog about Linux and open source software, where you can enjoy posts about databases, programming, scripting, Fedora and another geeky stuff. Forum PostgreSQL. Spare parts price-lists for the dealers. Schedule Introduction Saftey vs Performance Tunable on transaction level. username, database, protocol. It provides the following features. However, without further activity, that surviving server will be a streaming replication standby, that is a read-only server. Les deux solutions viables actuelles sont Patroni et Pacemaker/PAF, pour une raison claire: ils font de la HA correctement et pas avec des bouts de scotch ou en laissant l'administrateur développer lui même les points critique de l'archi. The main goal of this project is to provide simple and robust facilities for loadbalancing and high-availability to Linux system and Linux based infrastructures. As described by Magnus Hagander during his great talk about "PostgreSQL Replication in 2018" at the last FOSDEM event, PAF (aka. Receive the best content curated from around the web. Dernier message le 04/05/2020. August 21, 2015 Nguyen Sy Thanh Son 11 When you design a scale, high availability, high performance system, I sure that you have to apply Replication, Sharding and Load Balance technologies for your database layer. II разбирал Corosync/Pacemaker и repmgr. 使用pgpool ii作为负载平衡器可以获得性能吗? 对少量的连接来说,不会有性能提升。如果有大量的用户连接,YES。运行自己的测试来确定是否需要使用pgpool。 Muhammad Usama. EDB Postgres en cloud Deployment options for Postgres in the cloud. Learn how to get the best performance and scale your PostgreSQL database with our weekly shows. I wrote this as a response to a lack of high-level documentation that I needed to make decisions around deploying PostgreSQL and PgPool. Patroni is a solution developed by zalando, an e-commerce company based in Berlin. Patroni - Template for PostgreSQL HA with ZooKeeper or etcd. In general, we recommend Patroni over pgpool-II because it is less invasive. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul. username, database, protocol. The system uses these log entries to perform point-in- time restoration from archives and to keep the standby server up to date. Simultaneous translation of all the talks from Russian to English and back is provided. The central component is pgpool and I had to make myself very intimate with it. EDB Failover Manager with pgpool HA • EDB Failover Manager manages the failover of database • pgpool has it own HA which only manages failure of pgpool • pgpool also manages a virtual IP which can shift to 2nd pgpool node if there is a failover • No split brain at pgpool level as at a time only one node will have virtual IP and hence. That's where HAProxy comes in. Postgres-XL. По задумке, хотелось получить кластер, который переживает выпадение любого. My production setup uses patroni to manage failover, and patroni provides an HTTP API for health checks. I have pgpool-II for HA and repmgr for automatic failover. Forum PostgreSQL. А до этого, в ч. October 14, 2016 — Leave a comment. The bots are capable both of managing the PostgreSQL database and updating the distributed consensus system (etcd in this case although Zookeeper, Consul, and the Kubernetes API, which is backed by etcd, are also perfectly fine options). I'm not sure in which version it is introduced, but "watchdog" feature that is now embedded in pgpool does everything needed for automatic fialover and real HA. I’m using python + postgres (so there isn. 7 处理故障转移和高可用 可以使用pgpool来解决的一些明显的问题是高可用性和故障转移. , and like that logo. TimescaleDB срещу InfluxDB: цел, изградена по различен начин за данни от времеви серии. Etcd is a fault-tolerant, distributed key-value store that is used to store the state of the Postgres cluster. And bounce then accordingly at the time failover in failover script pointing to new master. Receive the best content curated from around the web. A look at some of the ways available to deploy Postgres in a Kubernetes cloud environment, either in small scale using simple configurations, or in larger scal…. After pressing Enter PostgreSQL will ask for the password of the user. pglookout - Replication monitoring and failover daemon. pgpool Heimdall Data - (Proprietary) Provides a multi-vendor solution for database caching, connection pooling, load balancing, query routing, analytics and security. PostgreSQL High Availability using Docker Containers, Kubernetes, etcd, Patroni, Consul. Pgpool-II ScaleGrid・ Mar 23. Legacy: Slony and Skytools (londiste) Slony was developed around the release date of PostgreSQL 7. 19 are now officially released. Pgpool-II saves connections to the PostgreSQL servers, and reuse them whenever a new connection with the same properties (i. Benchmarking TimescaleDB vs. Patroni Included below is a comprehensive table detailing the results of all the tests we have performed on all three frameworks – PostgreSQL Automatic Failover (PAF), Replication Manager (repmgr) and Patroni. Our database experts have written about pgpool-II and pgbouncer. PostgreSQL vs MySQL PostgreSQL will eat MySQL for lunch :) Ten times out of ten, PostgreSQL will eat MySQL for lunch (and twice on Sunday). The Citus extension to Postgres distributes data & queries across nodes so your database can scale and queries are fast. "TimescaleDB vs. Having just tried it myself, it does seem you can set up a network load balancer to load balance your databases. TimescaleDB(700MB) = 59 倍 例如,使用 pg_dump 和 pg_restore 做备份和恢复,使用 Patroni 实现高可用和故障转移,使用 Pgpool 实现集群读取的负载均衡。. どの動作モードでも,pcp. Message not available. Public Cloud, Migrations, Database Combinations & Top Reasons Used Requesting Feedback We are looking for good dates to host PostgresConf Philly in July/August 2019 and we are actively reviewing new markets for other Postgres Conference events including Texas, Vancouver B. patroni + etcd 是在一个postgrsql 开源大会上 亚信的一个哥们讲解的高可用方案。 依然是基于 postgreql stream replication。 ip规划 192. com et être connecté pour pouvoir participer aux discussions. yaml中PG_ROOT_PASSWORD或者PG_PASSWORD的值, 使用pgpool的pg_md5 指令生成密码(pg_md5. 1) Connect to PostgreSQL database. Google has many special features to help you find exactly what you're looking for. Записи о postgreSQL написанные j3qx. PostgreSQL High Availability Cookbook – Second Edition Shaun M. InfluxDB for Time-Series Data. This series has reached "End of Life", and is no longer maintained and does not receive any updates. 使用pgpool ii作为负载平衡器可以获得性能吗? 对少量的连接来说,不会有性能提升。如果有大量的用户连接,YES。运行自己的测试来确定是否需要使用pgpool。 Muhammad Usama. The third PGConf APAC will be held from 22 nd – 23 rd March, 2018. Patroni originated as a fork of Governor, the project from Compose. repmgr, pacemaker/corosync, Slony, Patroni and many more Connection Pooling pgBouncer (single-threaded), pgpool-II Sharding CitusDB Live version upgrades - tricky! pg_upgrade, Slony, pg_dump and pg_logical. From news to how-tos, our community of PostgreSQL experts is always sharing leading-edge insights. There are many different ways you can use queries in MongoDB to find the data you need. upgrading the javavm inside the oracle database? to upgrading the javavm inside the topic openshift oracle ouch! patroni pem pgpool podman postgr postgres. InfluxDB for Time-Series Data. The system uses these log entries to perform point-in- time restoration from archives and to keep the standby server up to date. Pgpool-II is the swiss army knife of PostgreSQL middleware. Managing High Availability in PostgreSQL - Part III: Patroni. EDB Failover Manager with pgpool HA • EDB Failover Manager manages the failover of database • pgpool has it own HA which only manages failure of pgpool • pgpool also manages a virtual IP which can shift to 2nd pgpool node if there is a failover • No split brain at pgpool level as at a time only one node will have virtual IP and hence. It provides the following features. Search the world's information, including webpages, images, videos and more. Postgres uses write-ahead logging (WAL) to continuously archive database transactions. Bring Your Own Cloud (BYOC) vs. PostgreSQL vs MySQL PostgreSQL will eat MySQL for lunch :) Ten times out of ten, PostgreSQL will eat MySQL for lunch (and twice on Sunday). "TimescaleDB vs. Shared-nothing: Each node has its own storage, which may or may not have the same information as the other nodes, depending on the structure of our system. Note that this is just a *mirror* - we don't work with issues/pull requests on github. Our database experts have written about pgpool-II and pgbouncer. А до этого, в ч. Want to be notified of new releases in digoal/blog ? If nothing happens, download GitHub Desktop and try again. Рассмотрим их перспективы, преимущества и недостатки, отличия и ниши для применения. Patroni is a solution developed by zalando, an e-commerce company based in Berlin. 验证failover node1 的 master 关闭 # systemctl stop postgresql-9. Read on to find out how easy and versatile this feature is! A Little Theory. , and Seattle. Russia - международная техническая конференция по открытой СУБД PostgreSQL, ежегодно. /* The top-level package collection of nixpkgs. Automating PostgreSQL failovers the sane way Tutorial workshop en Patroni is a popular modern open-source automatic failover tool for PostgreSQL. pgpool-adm : PCP Command들을 실행하기 위한 Extention. md 《为什么pgpool sr_check_password为空也能认证成功》 202004/20200404_08. Russia 2018 - 5-7 февраля, Москва, МГУ Тема: PostgreSQL High Availability кластер для Enterprise Докладчики: Вадим Яценко. It supports high-availability, provides automated load Read Article. Public Cloud, Migrations, Database Combinations & Top Reasons Used Requesting Feedback We are looking for good dates to host PostgresConf Philly in July/August 2019 and we are actively reviewing new markets for other Postgres Conference events including Texas, Vancouver B. patroni:8008/replica will respond with http status code 200 only if node is running as replica. Please visit our web site to file bug reports or submit patches. 19 are now officially released. Holzer; Re: AW: AW: broken backup trail in case of quickly patroni switchback and forth. EDB Failover Manager with pgpool HA • EDB Failover Manager manages the failover of database • pgpool has it own HA which only manages failure of pgpool • pgpool also manages a virtual IP which can shift to 2nd pgpool node if there is a failover • No split brain at pgpool level as at a time only one node will have virtual IP and hence. A look at some of the ways available to deploy Postgres in a Kubernetes cloud environment, either in small scale using simple configurations, or in larger scal…. 21 is the final release of the 3. repmgr Click To Tweet. It supports high-availability, provides automated load. 18 patroni: 1. Want to be notified of new releases in digoal/blog ? If nothing happens, download GitHub Desktop and try again. Forum PostgreSQL. It can be used to setup replicated PostgreSQL cluster configurations in different ways, for different uses. 4 postgresql: 9. username, database, protocol version) comes in. It is designed to be easy to use and avoids common pitfalls of other tools, such as false-positives and split-brains, by relying on external distributed consistency layer, such as Etcd, Consul, Zookeeper or the Kubernetes API. Yep, you don't need HAProxy with the newest versions pgpool-II. Public Cloud, Migrations, Database Combinations & Top Reasons Used Requesting Feedback We are looking for good dates to host PostgresConf Philly in July/August 2019 and we are actively reviewing new markets for other Postgres Conference events including Texas, Vancouver B. 2019 PostgreSQL Trends Report: Private vs. Note that this is just a *mirror* - we don't work with issues/pull requests on github. From: Zwettler Markus (OIZ) Re: 11 -> 12 upgrade on Debian Ubuntu. From: Peter J. Inside the categories packages are roughly * sorted by alphabet, but strict sorting has been long lost due * to merges. io review 0 user reviews, 0 testimonials, 8 products, 2 promotions, 4 social accounts, Alexa #118434, listed 2018 (#27338). PostgreSQL vs MySQL PostgreSQL will eat MySQL for lunch :) Ten times out of ten, PostgreSQL will eat MySQL for lunch (and twice on Sunday). Daniel Westermann's Blog October 2016 How to destroy your performance: PL/SQL vs SQL. Using streaming replication of PostgreSQL with pgpool-II Tatsuo Ishii President/PostgreSQL committer SRA OSS, Inc. We will also spin up pgpool automatically via gitlab for out of the bo horizontal scaling. However, without further activity, that surviving server will be a streaming replication standby, that is a read-only server. Remote Python Development in Visual Studio Code & VS Code Remote Development: Lors de PyCon 2019, Microsoft a annoncé la sortie de plusieurs extensions qui permettent d'améliorer l'expérience utilisateur du développeur python via des "remote containers", du "remote ssh" ou du "remote WSL". Fortunately, in the time since I had last looked for a solution, two new, good candidates arrived on the scene: Stolon and Patroni. If you continue browsing the site, you agree to the use of cookies on this website. As described by Magnus Hagander during his great talk about "PostgreSQL Replication in 2018" at the last FOSDEM event, PAF (aka. InfluxDB: Purpose built differently for time-series data An in-depth look into how two leading time-series databases stack up in terms of data model, query language, reliability, performance, ecosystem, operational management, and company/community support. II разбирал Corosync/Pacemaker и repmgr. Citus makes it simple to shard Postgres. PGConf APAC is the PostgreSQL conference series for all PostgreSQL enthusiasts in the Asia Pacific region. I wrote this as a response to a lack of high-level documentation that I needed to make decisions around deploying PostgreSQL and PgPool. In general, we recommend Patroni over pgpool-II because it is less invasive. 使用pgpool ii作为负载平衡器可以获得性能吗? 对少量的连接来说,不会有性能提升。如果有大量的用户连接,YES。运行自己的测试来确定是否需要使用pgpool。 Muhammad Usama. at least two of the three) must decide so; and they will implement the decision only after a delay of, say, 10 seconds after they decide. allitebooks. Promoting a new master server and failing over slaves sounds good, but your applications will need an easy way to keep track of the new master. PgPool setup & administrator Developed a Real-time Report system setup through Pentaho & Dropbox , start up , developing and support of the whole process , querys, tasks, jobs, delivery of the Reports ,etc. This blog post describes how to deploy HAProxy on top of your PostgreSQL replication setup. Provides a GUI for simple configuration, as well as a distributed engine for processing queries at scale. Russia 2018 - 5-7 февраля, Москва, МГУ Тема: PostgreSQL High Availability кластер для Enterprise Докладчики: Вадим Яценко. InfluxDB for Time-Series Data. Introduction to PostgreSQL Automatic Failover Published on 2018-02-07 by Stefan Fercot. com PostgreSQL Configuration Baji Shaik Hyderabad, Andhra Pradesh, India. Dedicated Hosting at ScaleGrid. I have pgpool-II for HA and repmgr for automatic failover. Once your cluster setup is complete, Patroni will actively monitor the cluster and ensure it's in a healthy state. II разбирал Corosync/Pacemaker и repmgr. "It works on my machine ¯\_(ツ)_/¯ " K8s is a container orchestrator - Written in Go (Golang) - Cloud Native Computing Foundation (CNCF). Событие: PGConf. com et être connecté pour pouvoir participer aux discussions. For each change made to the data files, WAL writes an entry in a log file. Both products are written in C and seem to be actively maintained, with pgpool-II seeing more action as it also has a lot more features and pretty ambitious ones. Database engineers, DBAs, DevOps engineers, and SREs who are looking to quickly deploy HA PostgreSQL in the datacenter-or anywhere else-will hopefully find it useful. InfluxDB for Time-Series Data. In general, we recommend Patroni over pgpool-II because it is less invasive. If you continue browsing the site, you agree to the use of cookies on this website. 102 node2 slave 192. If nothing happens, download GitHub Desktop and try. Re: broken backup trail in case of quickly patroni switchback and forth. The usual suspects – PgBouncer and pgpool-II. PGConf APAC is the PostgreSQL conference series for all PostgreSQL enthusiasts in the Asia Pacific region. DRBD is a Linux kernel module that implements. However, we did not have enough time to test against more scenario. Therefore, a database application (frontend) thinks that Pgpool-II is the actual PostgreSQL server, and the server (backend) sees Pgpool-II as one of its clients. - pgpool/pgpool2. Citus makes it simple to shard Postgres. query on the first available idle client. Aws Pgbouncer. Please visit our web site to file bug reports or submit patches. Событие: PGConf. The only reason we chose it is that at the time it was the only native layer 7 postgres HA proxy to support partition resistance (the watchdog quorum control part is actually reasonably robust and passed all the network partitioning tests that mattered to us). repmgr, pacemaker/corosync, Slony, Patroni and many more Connection Pooling pgBouncer (single-threaded), pgpool-II Sharding CitusDB Live version upgrades - tricky! pg_upgrade, Slony, pg_dump and pg_logical. 例如,使用pg_dump和pg_restore做备份和恢复,使用Patroni实现高可用和故障转移,使用Pgpool实现集群读取的负载均衡。由于TimescaleDB的操作类似于PostgreSQL,用户的学习曲线很低。 辅助Visual Studio 2017部署的DevOps新工具. Boosting Performance and Reliability by using pgpool-II Tatsuo Ishii SRA OSS, Inc. However, knowing which queries are slowing down your performance can be. Patroni has REST API providing a health-checks for load-balancers. 202004/20200408_01. Forum PostgreSQL. repmgr - Open-source tool suite to manage replication and failover in a cluster of PostgreSQL servers. The core architecture of Patroni looks like this: Each PostgreSQL node has a Patroni bot deployed on it. I wasn't prepared to switch from pgbouncer to pgpool, so I looked for other options. Etcd is a fault-tolerant, distributed key-value store that is used to store the state of the Postgres cluster. Because the configuration in this guide uses private IP addresses to communicate between Linodes in the same data center, this setup may not meet certain Highly Available requirements. Re: A very puzzling backup/restore problem. You also need some software that can reliably detect that the primary server is down and promote a standby. For the solution we have built, which we demonstrate in our webinar of October 10, we have used PgBouncer as our connection pooler. com et être connecté pour pouvoir participer aux discussions. Introduction to PostgreSQL Automatic Failover Published on 2018-02-07 by Stefan Fercot. The usual suspects - PgBouncer and pgpool-II. I'm not sure in which version it is introduced, but "watchdog" feature that is now embedded in pgpool does everything needed for automatic fialover and real HA. pgpool-recovery : Online Recovery를 위한 Extension. md 《PostgreSQL 查询当前执行中sql的执行计划 - pg_show_plans》. 一般来讲,有使用pgpool或者不使用pgpool可以用来处理这些问题的各种方法. pgpool-IIを試したいが、公式ドキュメントをすべて読むのが大変という方向けに、とりあえず動かすまでの基本知識と導入手順をまとめる。 pgpool-IIとは. Having just tried it myself, it does seem you can set up a network load balancer to load balance your databases. In all other cases it will return 503. craigkerstiens on 08-27-2019 03:48 PM. EDB Failover Manager with pgpool HA • EDB Failover Manager manages the failover of database • pgpool has it own HA which only manages failure of pgpool • pgpool also manages a virtual IP which can shift to 2nd pgpool node if there is a failover • No split brain at pgpool level as at a time only one node will have virtual IP and hence. It is licensed under BSD license. My production setup uses patroni to manage failover, and patroni provides an HTTP API for health checks. I'm not sure in which version it is introduced, but "watchdog" feature that is now embedded in pgpool does everything needed for automatic fialover and real HA. どの動作モードでも,pcp. 6-1, Vikas Sharma. In general, we recommend Patroni over pgpool-II because it is less invasive. That's where HAProxy comes in. Stolon - PostgreSQL HA based on Consul or etcd, with Kubernetes integration. Более подробно остановимся на современных молодых решениях, таких как repmgr, patroni, stolon. Connection Pooling.