Kamran Ahmed
4 years ago
parent
aa52e08ac4
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The intent of this guide is to give you an idea about the DBA landscape and to help guide your learning if you are confused. The roadmap is highly opinionated — neither, knowing everything listed in the roadmap, nor the order of items given in the roadmap is required to be followed in order to be a DBA. |
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|
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## Learn basic RDBMS terms and concepts |
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Get basic understanding of Postgres key terms and basic RDBMS concepts. |
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|
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- **Object model**: data types, columns, rows, tables, schemas, databases, queries. |
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- **Relational model**: domains, attributes, tuples, relations, constraints, NULL. |
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- **Databases high-level concepts**: ACID, MVCC, transactions, write-ahead log, query processing. |
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|
- **Links**: |
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- [Postgres Glossary](https://www.postgresql.org/docs/13/glossary.html) |
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- SQL and Relational Theory - Christopher J. Date, 2009 |
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- Database Design and Relational Theory - Christopher J. Date, 2012 |
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|
|
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## Learn how to install and run PostgreSQL |
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|
Get practical skills of how to set up and run Postgres to get a working environment for further learning. |
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|
|
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|
- Using package managers (APT, YUM, etc.) |
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|
- Using `docker`. |
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|
- Managing Postgres service using `systemd` (start, stop, restart, reload). |
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|
- Managing Postgres service using `pg_ctl`, or OS-specific tools (like `pg_ctlcluster`). |
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|
- Connect to Postgres using `psql`. |
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|
- Deploy database service in cloud environment (AWS, GCE, Azure, Heroku, DigitalOcean, etc...). |
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|
- **Links**: |
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|
- [Official download and install instructions](https://www.postgresql.org/download/) |
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- [Official Docker images](https://hub.docker.com/_/postgres) |
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|
|
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## Learn SQL concepts |
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|
Get practical skills of how to create and manipulate database objects and how to execute queries using `psql` client. |
||||||
|
- Understand basic data types. |
||||||
|
- **DML queries**: querying data, modifying data, filtering data, joining tables. |
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|
- **Advanced topics**: transactions, CTE, subqueries, lateral join, grouping, set operations. |
||||||
|
- **DDL queries**: managing tables and schemas (create, alter, drop). |
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|
- Import and export data using `COPY`. |
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|
- **Links**: |
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|
- [DB Fiddle](https://www.db-fiddle.com/) |
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|
- [PostgreSQL Tutorial](https://www.postgresqltutorial.com/) |
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- [PostgreSQL SQL Getting Started](https://www.postgresql.org/docs/current/tutorial-sql.html) |
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- [The SQL Language](https://www.postgresql.org/docs/current/sql.html) |
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|
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## Learn how to configure Postgres |
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Get understanding of the main aspects of how Postgres could be configured. Deep understanding of Postgres internals is not yet necessary here. |
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|
|
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- postgresql.conf: |
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- Resources usage |
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- Write-ahead Log |
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- Checkpoints and Background Writer |
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- Cost-based vacuum and auto-vacuum |
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- Replication |
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- Query planner |
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- Reporting, logging and statistics |
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|
- Adding extra extensions |
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|
- ...keep exploring other configuration options |
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- **Links**: |
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- [Postgresqlco.nf](http://postgresqlco.nf/) |
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|
|
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|
## Learn Postgres security concepts |
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|
Get understanding about basic security concepts and common ways of how to deploy secure configurations. |
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|
- Authentication models, roles, pg_hba.conf, SSL settings. |
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|
- **Objects privileges**: grant/revoke, default privileges. |
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|
- **Advanced topics** - row-level security, selinux. |
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- **Links**: |
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- [Client authentication](https://www.postgresql.org/docs/current/client-authentication.html) |
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- [Roles and users managements](https://www.postgresql.org/docs/current/user-manag.html) |
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|
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## Develop infrastructure DBA skills |
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|
Get practical skills of how to deploy, extend, maintain and support Postgres installations and 3rd-party Postgres ecosystem software. |
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|
- **Replication**: streaming replication, logical replication |
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|
- **Backup/recovery tools**: |
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|
- Built-in: `pg_dump`, `pg_dumpall`, `pg_restore`, `pg_basebackup` |
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|
- 3rd-party: `barman`, `pgbackrest`, `pg_probackup`, `WAL-G` |
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|
- Backup validation procedures |
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|
- **Upgrading procedures** |
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|
- Minor and major upgrades using `pg_upgrade` |
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|
- Upgrades using logical replication |
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|
- **Connection pooling**: |
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|
- `Pgbouncer` |
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|
- Alternatives: `Pgpool-II`, `Odyssey`, `Pgagroal` |
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|
- **Infrastructure monitoring**: `Prometheus`, `Zabbix`, other favourite monitoring solution |
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|
- **High availability and cluster management tools**: |
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|
- `Patroni` |
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|
- **Alternatives**: `Repmgr`, `Stolon`, `pg_auto_failover`, `PAF` |
||||||
|
- **Applications Load Balancing and Service Discovery**: `Haproxy`, `Keepalived`, `Consul`, `Etcd` |
||||||
|
- **Deploy Postgres on `Kubernetes`**: Simple `StatefulSet` setup, `HELM`, operators |
||||||
|
- Resource usage and provisioning, capacity planning |
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|
|
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|
## Learn how to automate routines |
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|
Get practical skills, learn automation tools and automate existing routine tasks. |
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|
- Automation using shell scripts or any other favourite language (`Bash`, `Python`, `Perl`, etc) |
||||||
|
- Configuration management: `Ansible`, `Salt`, `Chef`, `Puppet` |
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|
|
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|
## Develop application DBA skills |
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|
Learn theory and get practical skills of how applications should work with Postgres |
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|
- **Migrations**: |
||||||
|
- practical patterns and antipatterns |
||||||
|
- tools: `liquibase`, `sqitch`, language-specific tools |
||||||
|
- Data import/export, bulk loading and processing |
||||||
|
- **Queues**: |
||||||
|
- practical patterns and anti-patterns |
||||||
|
- `Skytools PGQ` |
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|
- Data partitioning and sharding patterns. |
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|
- Database normalization and normal forms. |
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|
- Books: |
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|
- The Art of PostgreSQL - Dimitri Fontaine, 2020 |
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|
|
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|
## Learn Postgres advanced topics |
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|
Here is important to continuously extend and develop existing knowledge about Postgres. |
||||||
|
- **Low level internals**: |
||||||
|
- Processes and memory architecture |
||||||
|
- Vacuum processing |
||||||
|
- Buffer management |
||||||
|
- Lock management |
||||||
|
- [Physical storage and file layout](https://www.postgresql.org/docs/current/storage.html) |
||||||
|
- [System catalog](https://www.postgresql.org/docs/current/catalogs.html) |
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|
- **Fine-grained tuning**: |
||||||
|
- Per-user, per-database settings |
||||||
|
- [Storage parameters](https://www.postgresql.org/docs/current/sql-createtable.html#SQL-CREATETABLE-STORAGE-PARAMETERS) |
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|
- Workload-dependant tuning: OLTP, OLAP, HTAP |
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|
- **Advanced SQL topics**: |
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|
- PL/pgSQL, procedures and functions, triggers |
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|
- Aggregate and window functions |
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|
- Recursive CTE |
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- **Links**: |
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|
- [The Internals of PostgreSQL](http://www.interdb.jp/pg/index.html) for database administrators and system developers |
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- [PL/pgSQL Guide](https://www.postgresql.org/docs/current/plpgsql.html) |
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|
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## Learn Postgres troubleshooting techniques |
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|
Get basic understanding about troubleshooting tools and get practical skills of how to detect and resolve problems. |
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|
- **Operating system tools** |
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|
- `top` (`htop`, `atop`) |
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|
- `sysstat` |
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|
- `iotop` |
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|
- **Postgres system views** |
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- `pg_stat_activity` |
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- `pg_stat_statements` |
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- **Postgres tools** |
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- `pgcenter` - *personal recommendation* |
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|
- **Query analyzing**: |
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- [EXPLAIN](https://www.postgresql.org/docs/current/sql-explain.html) |
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|
- [Depesz](https://explain.depesz.com/) online EXPLAIN visualization tool |
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|
- [PEV](https://tatiyants.com/pev/#/plans) online EXPLAIN visualization tool |
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- [Tensor](https://explain.tensor.ru/) online EXPLAIN visualization tool, RU language only |
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- **Log analyzing**: |
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- `pgBadger` |
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- Ad-hoc analyzing using `grep`, `awk`, `sed`, etc. |
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- **External tracing/profiling tools**: `gdb`, `strace`, `perf-tools`, `ebpf`, core dumps |
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- **Troubleshooting methods**: USE, RED, Golden signals |
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- **Links**: |
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- [Linux Performance](http://www.brendangregg.com/linuxperf.html) by Brendan Gregg |
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- [USE Method](http://www.brendangregg.com/usemethod.html) |
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|
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## Learn SQL optimization technics |
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Get understanding and practical skills of how to optimize SQL queries. |
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- **Indexes, and their use cases**: B-tree, Hash, GiST, SP-GiST, GIN, BRIN |
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- SQL queries patterns and anti-patterns |
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- SQL schema design patterns and anti-patterns |
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- **Links**: |
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- [Use the Index, Luke](https://use-the-index-luke.com/) - a Guide to Database Performance for Developers |
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- **Books**: |
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- SQL Antipatterns: Avoiding the Pitfalls of Database Programming - Bill Karwin, 2010 |
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|
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## Develop architect skills |
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Get deeper understanding of Postgres use cases and where Postgres is suitable and where is not. |
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- **Postgres forks and extensions**: `Greenplum`, `Timescaledb`, `Citus`, `Postgres-XL`, etc. |
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- RDBMS in general, benefits and limitations |
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- Differences between Postgres and other RDBMS and NoSQL databases |
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|
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## Develop Postgres hacker skills |
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Get involved to Postgres community and contribute to Postgres; be a useful member of Postgres, and the open source community; use personal experience to help other people. |
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- Daily reading and answering in [mailing lists](https://www.postgresql.org/list/) |
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- pgsql-general |
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- pgsql-admin |
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- pgsql-performance |
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- pgsql-hackers |
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- pgsql-bugs |
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- Reviewing patches |
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- Writing patches, attending in [Commitfests](https://commitfest.postgresql.org/) |
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|
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<br /> |
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<br /> |
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<br /> |
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@ -0,0 +1,40 @@ |
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{ |
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"seo": { |
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"title": "DBA Roadmap: Learn to become a database administrator with PostgreSQL", |
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"description": "Community driven, articles, resources, guides, interview questions, quizzes for DevOps. Learn to become a modern DevOps engineer by following the steps, skills, resources and guides listed in this roadmap.", |
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"keywords": [ |
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"guide to becoming a database administrator", |
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"guide to becoming a DBA", |
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|
"dba roadmap", |
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|
"db administrator roadmap", |
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"database administrator roadmap", |
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"postgresql roadmap", |
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|
"dba skills", |
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|
"db administrator skills", |
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|
"become dba", |
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|
"postgresql skills", |
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|
"modern dba skills", |
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|
"dba skills test", |
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|
"skills for dba", |
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|
"skills for database administrator", |
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|
"learn dba", |
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|
"what is dba", |
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|
"database administrator quiz", |
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|
"dba interview questions" |
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] |
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}, |
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|
"title": "DB Administrator", |
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"description": "Step by step guide to becoming a modern PostgreSQL DBA", |
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|
"featuredDescription": "Step by step guide to becoming a modern PostgreSQL DBA in 2020", |
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|
"path": "./landscape.md", |
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|
"resources": "./resources.md", |
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"author": { |
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|
"name": "Alexey Lesovsky", |
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"url": "https://github.com/lesovsky" |
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|
}, |
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|
"communityResource": true, |
||||||
|
"isTextHeavy": true, |
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|
"featured": false, |
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|
"detailed": false, |
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|
"versions": [] |
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|
} |
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@ -1,173 +0,0 @@ |
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#### PostgreSQL DBA Roadmap |
|
||||||
|
|
||||||
##### Learn basic RDBMS terms and concepts |
|
||||||
Get basic understanding of Postgres key terms and basic RDBMS concepts. |
|
||||||
- Object model: data types, columns, rows, tables, schemas, databases, queries. |
|
||||||
- Relational model: domains, attributes, tuples, relations, constraints, NULL. |
|
||||||
- Databases high-level concepts: ACID, MVCC, transactions, write-ahead log, query processing. |
|
||||||
- Links: |
|
||||||
- [Postgres Glossary](https://www.postgresql.org/docs/13/glossary.html) |
|
||||||
- SQL and Relational Theory - Christopher J. Date, 2009 |
|
||||||
- Database Design and Relational Theory - Christopher J. Date, 2012 |
|
||||||
|
|
||||||
##### Learn how to install and run PostgreSQL |
|
||||||
Get practical skills of how to set up and run Postgres to get a working environment for further learning. |
|
||||||
- using package managers (APT, YUM, etc.) |
|
||||||
- using `Docker`. |
|
||||||
- managing Postgres service using `systemd` (start, stop, restart, reload). |
|
||||||
- managing Postgres service using `pg_ctl`, or OS-specific tools (like `pg_ctlcluster`). |
|
||||||
- connect to Postgres using `psql`. |
|
||||||
- deploy database service in cloud environment (AWS, GCE, Azure, Heroku, DigitalOcean, etc...). |
|
||||||
- Links: |
|
||||||
- [Official download and install instructions](https://www.postgresql.org/download/) |
|
||||||
- [Official Docker images](https://hub.docker.com/_/postgres) |
|
||||||
|
|
||||||
##### Learn SQL concepts |
|
||||||
Get practical skills of how to create and manipulate database objects and how to execute queries using `psql` client. |
|
||||||
- Understanding basic data types. |
|
||||||
- DML queries: querying data, modifying data, filtering data, joining tables. |
|
||||||
- advanced topics: transactions, CTE, subqueries, lateral join, grouping, set operations. |
|
||||||
- DDL queries: managing tables and schemas (create, alter, drop). |
|
||||||
- Import and export data using `COPY`. |
|
||||||
- Links: |
|
||||||
- [DB Fiddle](https://www.db-fiddle.com/) |
|
||||||
- [PostgreSQL Tutorial](https://www.postgresqltutorial.com/) |
|
||||||
- [PostgreSQL SQL Getting Started](https://www.postgresql.org/docs/current/tutorial-sql.html) |
|
||||||
- [The SQL Language](https://www.postgresql.org/docs/current/sql.html) |
|
||||||
|
|
||||||
##### Learn how to configure Postgres |
|
||||||
Get understanding of the main aspects of how Postgres could be configured. Deep understanding of Postgres internals is not yet necessary here. |
|
||||||
- postgresql.conf: |
|
||||||
- resources usage |
|
||||||
- write-ahead log |
|
||||||
- checkpoints and background writer |
|
||||||
- cost-based vacuum and autovacuum |
|
||||||
- replication |
|
||||||
- query planner |
|
||||||
- reporting, logging and statistics |
|
||||||
- adding extra extensions |
|
||||||
- ... keep exploring other configuration options |
|
||||||
Links: |
|
||||||
- [Postgresqlco.nf](http://postgresqlco.nf/) |
|
||||||
|
|
||||||
##### Learn Postgres security concepts |
|
||||||
Get understanding about basic security concepts and common ways of how to deploy secure configurations. |
|
||||||
- Authentication models, roles, pg_hba.conf, SSL settings. |
|
||||||
- Objects privileges: grant/revoke, default privileges. |
|
||||||
- Advanced topics - row-level security, selinux. |
|
||||||
- Links: |
|
||||||
- [Client authentication](https://www.postgresql.org/docs/current/client-authentication.html) |
|
||||||
- [Roles and users managements](https://www.postgresql.org/docs/current/user-manag.html) |
|
||||||
|
|
||||||
##### Develop infrastructure DBA skills |
|
||||||
Get practical skills of how to deploy, extend, maintain and support Postgres installations and 3rd-party Postgres ecosystem software. |
|
||||||
- Replication: streaming replication, logical replication |
|
||||||
- Backup/recovery tools: |
|
||||||
- Built-in: `pg_dump`, `pg_dumpall`, `pg_restore`, `pg_basebackup` |
|
||||||
- 3rd-party: `barman`, `pgbackrest`, `pg_probackup`, `WAL-G` |
|
||||||
- Backup validation procedures |
|
||||||
- Upgrading procedures |
|
||||||
- minor and major upgrades using `pg_upgrade` |
|
||||||
- upgrades using logical replication |
|
||||||
- Connection pooling: |
|
||||||
- `Pgbouncer` |
|
||||||
- alternatives: `Pgpool-II`, `Odyssey`, `Pgagroal` |
|
||||||
- Infrastructure monitoring: `Prometheus`, `Zabbix`, other favourite monitoring solution |
|
||||||
- High availability and cluster management tools: |
|
||||||
- `Patroni` |
|
||||||
- alternatives: `Repmgr`, `Stolon`, `pg_auto_failover`, `PAF` |
|
||||||
- Applications Load Balancing and Service Discovery: `Haproxy`, `Keepalived`, `Consul`, `Etcd` |
|
||||||
- Deploy Postgres on `Kubernetes`: simple `StatefulSet` setup, `HELM`, operators |
|
||||||
- Resource usage and provisioning, capacity planning |
|
||||||
|
|
||||||
##### Learn how to automate routines |
|
||||||
Get practical skills, learn automation tools and automate existing routine tasks. |
|
||||||
- Automation using shell scripts or any other favourite language (`Bash`, `Python`, `Perl`, etc) |
|
||||||
- Configuration management: `Ansible`, `Salt`, `Chef`, `Puppet` |
|
||||||
|
|
||||||
##### Develop application DBA skills |
|
||||||
Learn theory and get practical skills of how applications should work with Postgres |
|
||||||
- Migrations: |
|
||||||
- practical patterns and antipatterns |
|
||||||
- tools: `liquibase`, `sqitch`, language-specific tools |
|
||||||
- Data import/export, bulk loading and processing |
|
||||||
- Queues: |
|
||||||
- practical patterns and anti-patterns |
|
||||||
- `Skytools PGQ` |
|
||||||
- Data partitioning and sharding patterns. |
|
||||||
- Database normalization and normal forms. |
|
||||||
- Books: |
|
||||||
- The Art of PostgreSQL - Dimitri Fontaine, 2020 |
|
||||||
|
|
||||||
##### Learn Postgres advanced topics |
|
||||||
Here is important to continuously extend and develop existing knowledge about Postgres. |
|
||||||
- Low level internals: |
|
||||||
- Processes and memory architecture |
|
||||||
- Vacuum processing |
|
||||||
- Buffer management |
|
||||||
- Lock management |
|
||||||
- [Physical storage and file layout](https://www.postgresql.org/docs/current/storage.html) |
|
||||||
- [System catalog](https://www.postgresql.org/docs/current/catalogs.html) |
|
||||||
- Fine-grained tuning: |
|
||||||
- Per-user, per-database settings |
|
||||||
- [Storage parameters](https://www.postgresql.org/docs/current/sql-createtable.html#SQL-CREATETABLE-STORAGE-PARAMETERS) |
|
||||||
- Workload-dependant tuning: OLTP, OLAP, HTAP |
|
||||||
- Advanced SQL topics: |
|
||||||
- PL/pgSQL, procedures and functions, triggers |
|
||||||
- aggregate and window functions |
|
||||||
- recursive CTE |
|
||||||
- Links: |
|
||||||
- [The Internals of PostgreSQL](http://www.interdb.jp/pg/index.html) for database administrators and system developers |
|
||||||
- [PL/pgSQL Guide](https://www.postgresql.org/docs/current/plpgsql.html) |
|
||||||
|
|
||||||
##### Learn Postgres troubleshooting technics |
|
||||||
Get basic understanding about troubleshooting tools and get practical skills of how to detect and resolve problems. |
|
||||||
- Operating system tools |
|
||||||
- `top` (`htop`, `atop`) |
|
||||||
- `sysstat` |
|
||||||
- `iotop` |
|
||||||
- Postgres system views |
|
||||||
- `pg_stat_activity` |
|
||||||
- `pg_stat_statements` |
|
||||||
- Postgres tools |
|
||||||
- `pgcenter` - *personal recommendation* |
|
||||||
- Query analyzing: |
|
||||||
- [EXPLAIN](https://www.postgresql.org/docs/current/sql-explain.html) |
|
||||||
- [Depesz](https://explain.depesz.com/) online EXPLAIN visualization tool |
|
||||||
- [PEV](https://tatiyants.com/pev/#/plans) online EXPLAIN visualization tool |
|
||||||
- [Tensor](https://explain.tensor.ru/) online EXPLAIN visualization tool, RU language only |
|
||||||
- Log analyzing: |
|
||||||
- `pgBadger` |
|
||||||
- Ad-hoc analyzing using `grep`, `awk`, `sed`, etc. |
|
||||||
- External tracing/profiling tools: `gdb`, `strace`, `perf-tools`, `ebpf`, core dumps |
|
||||||
- Troubleshooting methods: USE, RED, Golden signals |
|
||||||
- Links: |
|
||||||
- [Linux Performance](http://www.brendangregg.com/linuxperf.html) by Brendan Gregg |
|
||||||
- [USE Method](http://www.brendangregg.com/usemethod.html) |
|
||||||
|
|
||||||
##### Learn SQL optimization technics |
|
||||||
Get understanding and practical skills of how to optimize SQL queries. |
|
||||||
- Indexes, and their use cases: B-tree, Hash, GiST, SP-GiST, GIN, BRIN |
|
||||||
- SQL queries patterns and anti-patterns |
|
||||||
- SQL schema design patterns and anti-patterns |
|
||||||
- Links: |
|
||||||
- [Use the Index, Luke](https://use-the-index-luke.com/) - a Guide to Database Performance for Developers |
|
||||||
- Books: |
|
||||||
- SQL Antipatterns: Avoiding the Pitfalls of Database Programming - Bill Karwin, 2010 |
|
||||||
|
|
||||||
##### Develop architect skills |
|
||||||
Get deeper understanding of Postgres use cases and where Postgres is suitable and where is not. |
|
||||||
- Postgres forks and extensions: `Greenplum`, `Timescaledb`, `Citus`, `Postgres-XL`, etc. |
|
||||||
- RDBMS in general, benefits and limitations |
|
||||||
- Differences between Postgres and other RDBMS and NoSQL databases |
|
||||||
|
|
||||||
##### Develop Postgres hacker skills |
|
||||||
Get involved to Postgres community and contribute to Postgres; be a useful member of Postgres, and the open source community; use personal experience to help other people. |
|
||||||
- daily reading and answering in [mailing lists](https://www.postgresql.org/list/) |
|
||||||
- pgsql-general |
|
||||||
- pgsql-admin |
|
||||||
- pgsql-performance |
|
||||||
- pgsql-hackers |
|
||||||
- pgsql-bugs |
|
||||||
- reviewing patches |
|
||||||
- writing patches, attending in [Commitfests](https://commitfest.postgresql.org/) |
|
||||||
@ -1,2 +0,0 @@ |
|||||||
## PostgreSQL DBA Roadmap |
|
||||||
Roadmap to becoming a PostgreSQL Database Administrator |
|
||||||
@ -1,14 +0,0 @@ |
|||||||
{ |
|
||||||
"title": "PostgreSQL DBA Roadmap", |
|
||||||
"description": "Step by step guide to becoming a modern PostgreSQL DBA", |
|
||||||
"featuredDescription": "Step by step guide to becoming a modern PostgreSQL DBA in 2020", |
|
||||||
"path": "./landscape.md", |
|
||||||
"resources": "./resources.md", |
|
||||||
"author": { |
|
||||||
"name": "Alexey Lesovsky", |
|
||||||
"url": "https://github.com/lesovsky" |
|
||||||
}, |
|
||||||
"featured": false, |
|
||||||
"detailed": false, |
|
||||||
"versions": [] |
|
||||||
} |
|
||||||
Loading…
Reference in new issue