基础介绍
基础描述
- Kubesec 是一个开源项目,旨在为 Kubernetes 提供安全特性。它提供了一组工具和插件,用于保护和管理在 Kubernetes 集群中的工作负载和基础设施。Kubesec 的目标是帮助开发人员和运维人员在 Kubernetes 环境中实现安全性、可靠性和合规性。
特点
- 自动化的安全策略:Kubesec 提供了自动化的安全策略,可以基于角色的访问控制(RBAC)和标签选择器来定义和执行安全规则。这可以帮助开发人员和运维人员快速部署和管理安全策略,而无需手动编写复杂的脚本来保护 Kubernetes 集群。
- 加密和身份验证:Kubesec 支持对 Kubernetes 集群中的数据和通信进行加密,以确保敏感数据的安全性。它还提供了身份验证和授权机制,可以验证集群中节点的身份并限制它们的访问权限。
- 漏洞扫描和修复:Kubesec 可以与漏洞扫描工具集成,以发现和修复 Kubernetes 工作负载中的漏洞。它还可以监视集群中的容器映像,并在发现新漏洞时自动更新容器映像。
- 合规性检查:Kubesec 可以与合规性框架集成,以确保 Kubernetes 集群符合特定的安全标准和法规要求。它提供了可扩展的插件架构,可以轻松添加新的合规性规则和检查。
- 安全审计日志:Kubesec 可以生成详细的安全审计日志,记录集群中发生的安全事件和操作。这些日志可以用于监控和检测潜在的安全问题,并提供合规性报告。kubesec官网:https://kubesec.io/**开源地址**:https://github.com/controlplaneio/kubesec
部署
在线下载
wget https://github.com/controlplaneio/kubesec/releases/download/v2.14.0/kubesec_linux_amd64.tar.gz
百度网盘下载
链接:https://pan.baidu.com/s/1KHb5Qn9k1uIQeFOE_Ib6rg?pwd=h0i0
提取码:h0i0
–来自百度网盘超级会员V7的分享
安装
- 解压:
tar -zxf kubesec_linux_amd64.tar.gz
- 移入二进制目录:
mv kubesec /usr/bin/
- 查询版本信息:
kubesec version
- 查询 kubesec scan --help 使用方法
使用
官网样例yaml
cat <<EOF > kubesec-test.yaml
apiVersion: v1
kind: Pod
metadata:name: kubesec-demo
spec:containers:-name: kubesec-demo
image: gcr.io/google-samples/node-hello:1.0securityContext:readOnlyRootFilesystem:true
EOF
- 执行 检查yaml安全配置
kubesec scan kubesec-test.yaml
HTTP远程调用
- 部署docker容器
docker run -d-p8080:8080 kubesec/kubesec http 8080
- 本地执行post请求进行安全扫描
curl-sSX POST --data-binary @kubesec-test.yaml http://localhost:8080/scan
安全建议
- 安全扫描的json结果,每个id给我安全配置建议,可进行参考
[{"object":"Pod/kubesec-demo.default","valid":true,"fileName":"kubesec-test.yaml","message":"Passed with a score of 1 points","score":1,"scoring":{"passed":[{"id":"ReadOnlyRootFilesystem","selector":"containers[] .securityContext .readOnlyRootFilesystem == true","reason":"An immutable root filesystem can prevent malicious binaries being added to PATH and increase attack cost","points":1}],"advise":[{"id":"ApparmorAny","selector":".metadata .annotations .\"container.apparmor.security.beta.kubernetes.io/nginx\"","reason":"Well defined AppArmor policies may provide greater protection from unknown threats. WARNING: NOT PRODUCTION READY","points":3},{"id":"ServiceAccountName","selector":".spec .serviceAccountName","reason":"Service accounts restrict Kubernetes API access and should be configured with least privilege","points":3},{"id":"SeccompAny","selector":".metadata .annotations .\"container.seccomp.security.alpha.kubernetes.io/pod\"","reason":"Seccomp profiles set minimum privilege and secure against unknown threats","points":1},{"id":"AutomountServiceAccountToken","selector":".spec .automountServiceAccountToken == false","reason":"Disabling the automounting of Service Account Token reduces the attack surface of the API server","points":1},{"id":"RunAsGroup","selector":".spec, .spec.containers[] | .securityContext .runAsGroup -gt 10000","reason":"Run as a high-UID group to avoid conflicts with the host's groups","points":1},{"id":"RunAsNonRoot","selector":".spec, .spec.containers[] | .securityContext .runAsNonRoot == true","reason":"Force the running image to run as a non-root user to ensure least privilege","points":1},{"id":"RunAsUser","selector":".spec, .spec.containers[] | .securityContext .runAsUser -gt 10000","reason":"Run as a high-UID user to avoid conflicts with the host's users","points":1},{"id":"LimitsCPU","selector":"containers[] .resources .limits .cpu","reason":"Enforcing CPU limits prevents DOS via resource exhaustion","points":1},{"id":"LimitsMemory","selector":"containers[] .resources .limits .memory","reason":"Enforcing memory limits prevents DOS via resource exhaustion","points":1},{"id":"RequestsCPU","selector":"containers[] .resources .requests .cpu","reason":"Enforcing CPU requests aids a fair balancing of resources across the cluster","points":1},{"id":"RequestsMemory","selector":"containers[] .resources .requests .memory","reason":"Enforcing memory requests aids a fair balancing of resources across the cluster","points":1},{"id":"CapDropAny","selector":"containers[] .securityContext .capabilities .drop","reason":"Reducing kernel capabilities available to a container limits its attack surface","points":1},{"id":"CapDropAll","selector":"containers[] .securityContext .capabilities .drop | index(\"ALL\")","reason":"Drop all capabilities and add only those required to reduce syscall attack surface","points":1}]}}]
- 如上图,yaml安全配置建议配置内存及cpu相关等参数
- 在实际业务中,如自建devops平台、或者在实际编写yaml过程中,都可以使用kubesec进行检查校验,根据实际情况进行修改。
总结
Kubesec 是一个针对 Kubernetes 的安全特性扩展项目,旨在提供自动化的安全策略、加密和身份验证、漏洞扫描和修复、合规性检查以及安全审计日志等功能,以增强 Kubernetes 集群的安全性、可靠性和合规性。
通过部署 Kubesec,可以自动化地定义和执行安全规则,减少手动编写安全脚本的工作量,同时提供加密和身份验证机制,确保集群中的数据和通信的安全性。此外,Kubesec 还支持与漏洞扫描工具集成,以发现和修复工作负载中的漏洞,并可以监视容器映像以自动更新漏洞修复。
Kubesec 还提供了合规性检查功能,以确保 Kubernetes 集群符合特定的安全标准和法规要求。它支持可扩展的插件架构,可以轻松添加新的合规性规则和检查。此外,Kubesec 还生成详细的安全审计日志,记录集群中的安全事件和操作,以便进行监控和检测潜在的安全问题,并提供合规性报告。
总之,Kubesec 是一个强大的工具,可以帮助开发人员和运维人员在 Kubernetes 环境中实现安全性、可靠性和合规性。
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