Secure Container

Overview

The secure container technology is an organic combination of virtualization and container technologies. Compared with a common Linux container, a secure container has better isolation performance.

Common Linux containers use namespaces to isolate the running environment between processes and use cgroups to limit resources. Essentially, these common Linux containers share the same kernel. Therefore, if a single container affects the kernel intentionally or unintentionally, the containers on the same host will be affected.

Secure containers are isolated by the virtualization layers. Containers on the same host do not affect each other.

Figure 1 Secure container architecture

Secure containers are closely related to the concept of pod in Kubernetes. Kubernetes is the open-source ecosystem standard for the container scheduling management platform. It defines a group of container runtime interfaces (CRIs).

In the CRI standards, a pod is a logical grouping of one or more containers, which are scheduled together and share interprocess communication (IPC) and network namespaces. As the smallest unit for scheduling, a pod must contain a pause container and one or more service containers. The lifecycle of a pause container is the same as that of the pod.

A lightweight virtual machine (VM) in a secure container is a pod. The first container started in the VM is the pause container, and the containers started later are service containers.

In a secure container, you can start a single container or start a pod.

Figure 2 shows the relationship between the secure container and peripheral components.

Figure 2 Relationship between the secure container and peripheral components

有奖捉虫

“有虫”文档片段

存在的问题

提交类型 issue
有点复杂...
找人问问吧。
PR
小问题,全程线上修改...
一键搞定!
问题类型
规范和低错类

● 错别字或拼写错误;标点符号使用错误;

● 链接错误、空单元格、格式错误;

● 英文中包含中文字符;

● 界面和描述不一致,但不影响操作;

● 表述不通顺,但不影响理解;

● 版本号不匹配:如软件包名称、界面版本号;

易用性

● 关键步骤错误或缺失,无法指导用户完成任务;

● 缺少必要的前提条件、注意事项等;

● 图形、表格、文字等晦涩难懂;

● 逻辑不清晰,该分类、分项、分步骤的没有给出;

正确性

● 技术原理、功能、规格等描述和软件不一致,存在错误;

● 原理图、架构图等存在错误;

● 命令、命令参数等错误;

● 代码片段错误;

● 命令无法完成对应功能;

● 界面错误,无法指导操作;

风险提示

● 对重要数据或系统存在风险的操作,缺少安全提示;

内容合规

● 违反法律法规,涉及政治、领土主权等敏感词;

● 内容侵权;

您对文档的总体满意度

非常不满意
非常满意
创Issue赢奖品
根据您的反馈,会自动生成issue模板。您只需点击按钮,创建issue即可。