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Create: 2025-05-16 Update: 2025-06-30 12:42:46

Если запустить контейнер в Kubernetes и ничего не делать с capabilities (это подмножество привилегий, которые обычно предоставляются root), то в итоге у контейнера они все равно будут. Это так называемые Default Capabilities:
- cap_chown - Разрешает изменение владельца файлов.
- cap_dac_override - Разрешает доступ к файлам, игнорируя права.
- cap_fowner - Разрешает изменение владельца файлов.
- cap_fsetid - Разрешает установку битов setuid и setgid.
- cap_kill - Разрешает отправку сигналов процессам.
- cap_setgid - Разрешает изменение группы.
- cap_setuid - Разрешает изменение пользователя.
- cap_setpcap - Разрешает установку собственных способностей.
- cap_net_bind_service - Разрешает привязку к привилегированным портам (ниже 1024).
- cap_net_raw - Разрешает использование сырых сокетов.
- cap_sys_chroot - Разрешает изменение корневой директории.
- cap_mknod - Разрешает создание специальных файлов.
- cap_audit_write - Разрешает запись в журнал аудита ядра.
- cap_setfcap - Разрешает установку способностей для файлов.

Поэтому всегда не забывайте прописывать в настройках рабочих нагрузок:

securityContext:
  capabilities:
    drop:
    - ALL

Это спокойно работает для 99.9% любых бизнес микросервисов. С инфраструктурными сервисами разговор уже отдельный, но и там необходимо следовать принципу наименьших привилегий.

k8s (in)security

securityContext:
  capabilities:
    drop:
    - ALL

hottg.com/k8security/1529

5.4K viewsДмитрий Евдокимов, edited May 16 at 05:09

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Если запустить контейнер в Kubernetes и ничего не делать с capabilities (это подмножество привилегий

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