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78 lines
2.2 KiB
Markdown
78 lines
2.2 KiB
Markdown
---
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title: Аутентификация в Postgres Pro с помощью Kerberos
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description: Используя протокол GSSAPI
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date: 2022-11-29T16:21:00+05:00
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tags: [linux, postgres, krb5]
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---
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## Установка Kerberos и Postgres Pro
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Для начала, необходимо установить [Postgres Pro](//fruw.org/posts/postgres-pro-astra-se) и [Kerberos](//fruw.org/posts/linux-krb5).
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На машину с Postgres Pro Kerberos устанавливается также, как и на клиента.
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## Конфигурация сервера Kerberos
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### Добавление принципиала Postgres Pro
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```shell
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kadmin.local
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addprinc <username>
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addprinc postgres
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addprinc postgres/<pg-hostname>
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q
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```
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### Экспорт субъекта-службы
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```shell
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ktutil
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add_entry -password -p postgres/<pg-hostname>@<DOMAIN.NAME> -k 1 -e aes256-cts-hmac-sha1-96
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wkt postgres.keytab
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q
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```
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### Перенос субъекта-службы на сервер Postgres Pro
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Перенести keytab можно как угодно, главное, чтобы он находился в папке с конфигурационными файлами Postgres Pro.
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Я перенесу с помощью команды scp:
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```shell
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scp postgres.keytab postgres@<pg-hostname>:/var/lib/pgpro/std-13/data/
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```
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## Конфигурация сервера Postgres Pro
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### Включение ранее перенесённого keytab
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```shell
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ktutil
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read_kt postgres.keytab
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q
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```
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### Изменение конфигруационного файла Postgres Pro
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```shell
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krb_server_keyfile = 'postgres.keytab'
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listen_addresses = 'localhost, <pg-ip>'
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# /var/lib/pgpro/std-13/data/postgresql.conf
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```
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### Разрешение подключения
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```shell
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hostgssenc all postgres localhost/32 gss include_realm=0
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hostgssenc <database> <username> <client-ip>/32 gss include_realm=0
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# /var/lib/pgpro/std-13/data/pg_hba.conf
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```
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### Получение тикета от Kerberos
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```shell
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kinit postgres
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```
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## Конфигурация клиента
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### Получение тикета от Kerberos
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```shell
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kinit <username>
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```
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### Подключение к Postgres Pro
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```shell
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psql -d <database> -h <pg-hostname> -U <username>
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```
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