Версия oracle linux команда

Как перейти с CentOS на Oracle Linux

CentOS широко используется малым бизнесом и разработчиками в серверных средах. Он обеспечивает стабильность и надежность, которые предлагает RHEL абсолютно бесплатно. Будучи версией обкатки и бета-версией для релизов RHEL, CentOS Stream не будет рекомендован для производственных рабочих нагрузок.

Несколько альтернатив были предложены в качестве достойной замены. Например AlmaLinux появился как жизнеспособный кандидат, похожий 1:1 и бинарно совместимым с RHEL. Мы вскоре покажем, как вы можете перейти с CentOS 8 на AlmaLinux 8.4.

Другой рекомендуемой альтернативой является Oracle Linux, который на 100% совместим с RHEL. Это означает, что приложения и функции остаются неизменными для Oracle Linux.

В этом руководстве мы расскажем вам как перейти с CentOS на Oracle Linux.

ВНИМАНИЕ:

В нашем случае переход с CentOS 8 на Oracle Linux прошел гладко, однако мы не можем с уверенностью гарантировать, что то же самое будет воспроизведено и в вашем случае.

В качестве меры предосторожности мы рекомендуем вам выполнить полную резервную копию всех ваших файлов перед началом миграции. Кроме того, убедитесь, что у вас есть быстрое и стабильное подключение к Интернету для обновления системных пакетов и загрузки последних пакетов Oracle Linux.

Тем не менее, выполните следующие действия, чтобы начать миграцию с CentOS на Oracle Linux.

Вам может понравится:

Подготовка к переходу с CentOS на Oracle Linux

Во-первых, войдите в систему CentOS и обновите ее до последней текущей версии. На данный момент последним релизом CentOS является CentOS 8.4.

Обновление займет довольно много времени и будет по большей части зависеть от вашего подключения к Интернету. Чем быстрее ваше подключение к Интернету, тем быстрее будет обновление.

Затем проверьте, была ли ваша система обновлена до последней версии.Введите команду как показано и посмотрите ответ.

Затем загрузите и запустите сценарий миграции, который доступный на Github. Этот сценарий поможет вам переключиться с экземпляра CentOS на Oracle Linux. Он выполняет несколько операций, включая удаление специфичных пакетов для CentOS. Либо найдет замену для Oracle Linux. На данный момент скрипт поддерживает выпуски CentOS 6, 7, 8 и не поддерживает CentOS Stream.

Переход (Миграция) с CentOS на Oracle Linux

Чтобы загрузить скрипт, выполните команду curl, как показано ниже.

$ curl -O https://raw.githubusercontent.com/oracle/centos2ol/main/centos2ol.sh

Эта команда загружает сценарий миграции под названием centos2ol.sh.

Затем назначьте разрешения на выполнение с помощью команды chmod.

Чтобы начать миграцию, запустите сценарий, как показано ниже.

Как уже упоминалось ранее, скрипт выполняет ряд операций. Сначала он проверяет наличие всех пакетов, которые необходимы во время обновления, и устанавливает отсутствующие.

Процесс миграции CentOS в Oracle Linux

Затем он переходит к резервному копированию старых файлов репозитория CentOS.

Резервное копирование Старых репозиториев CentOS

Далее скрипт скачивает приложения Oracle Linux и базовые репозитории ОС. И соответственно удаляет эквивалентные CentOS.

Включить Репозитории Oracle Linux

После перехода в репозитории Oracle Linux он синхронизируется с онлайн-репозиториями и обновляет пакеты Oracle Linux. Он также переустановит некоторые пакеты.

Синхронизация с репозиториями Oracle

Весь процесс довольно длительный потребуется минимум 2-3 часа. После завершения переключения вам будет предложено перезагрузить систему CentOS, как показано на рисунке

Как перейти с CentOS на Oracle Linux

Просто запустите команду:

Во время перезагрузки на экране появится журнал Oracle Linux log.

Перезагрузка Oracle Linux

Вскоре после этого появится меню Grub. Запись сервера Oracle Linux будет первой в списке, поэтому нажмите ENTER на клавиатуре, чтобы загрузиться в Oracle Linux.

Загрузочное меню Oracle Linux

Как только вы войдете в систему, еще раз проверьте версию операционной системы. Сделать это можно следующим образом.

Заключение

Вот и все в перешли с CentOS на Oracle Linux. Как видите нет ничего сложного, за вас все сделал скрипт. Мы надеемся, что это руководство стало для вас полезным. И не могу еще раз не предупредить:

Рекомендуем вам выполнить полную резервную копию всех ваших файлов перед началом перехода с CentOS на Oracle Linux.

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Oracle В® Linux 7

Administrator’s Guide

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How to see the version of Oracle Linux

Determine Oracle Linux version

Oracle Linux is based on Red Hat Enterprise Linux. At first, it may be confusing to determine what specific operating system is running. This is because both have the /etc/redhat-release file.

If that file exists, use the cat command to display the contents. Next step is to determine if there is a /etc/oracle-release file as well. If so, then you can be sure that Oracle Linux is running.

Sample output might be: Oracle Linux Server release 6.7

Other options

Next time when you are on a system and not sure what it is running, use this:

This shows you any files that might give a hint on the operating system version.

Related files

• /etc/enterprise-release (older versions of OEL)
• /etc/issue
• /etc/issue.net
• /etc/lsb-release

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