You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
2.1 KiB
56 lines
2.1 KiB
7 years ago
|
# Checks
|
||
|
|
Checks are recommendations from the Center for Internet Security for Kubernetes 1.6+ installations.
|
||
|
|
|
||
|
|
## YAML Representation
|
||
|
|
In this application these recommendations are represented as YAML documents.
|
||
|
|
An example is as listed below:
|
||
|
|
```
|
||
|
|
---
|
||
|
|
controls:
|
||
|
|
id: 1
|
||
|
|
text: "Master Checks"
|
||
|
|
type: "master"
|
||
|
|
groups:
|
||
|
|
- id: 1.1
|
||
|
|
text: "Kube-apiserver"
|
||
|
|
checks:
|
||
|
|
- id: 1.1.1
|
||
|
|
text: "Ensure that the --allow-privileged argument is set (Scored)"
|
||
|
|
audit: "ps -ef | grep kube-apiserver | grep -v grep"
|
||
|
|
tests:
|
||
|
|
- flag: "--allow-privileged"
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the /etc/kubernetes/config file on the master node and set the KUBE_ALLOW_PRIV parameter to '--allow-privileged=false'"
|
||
|
|
scored: true
|
||
|
|
```
|
||
|
|
|
||
|
|
Recommendations (called `checks` in this document) can run on Kubernetes Master, Node or Federated API Servers.
|
||
|
|
Checks are organized into `groups` which share similar controls (things to check for) and are grouped together in the section of the CIS Kubernetes document.
|
||
|
|
These groups are further organized under `controls` which can be of the type `master`, `node` or `federated apiserver` to reflect the various Kubernetes node types.
|
||
|
|
|
||
|
|
## Tests
|
||
|
|
Tests are the items we actually look for to determine if a check is successful or not. Checks can have multiple tests, which must all be successful for the check to pass.
|
||
|
|
|
||
|
|
The syntax for tests:
|
||
|
|
```
|
||
|
|
tests:
|
||
|
|
- flag:
|
||
|
|
set:
|
||
|
|
compare:
|
||
|
|
op:
|
||
|
|
value:
|
||
|
|
...
|
||
|
|
```
|
||
|
|
Tests have various `operations` which are used to compare the output of audit commands for success.
|
||
|
|
These operations are:
|
||
|
|
|
||
|
|
- `eq`: tests if the flag value is equal to the compared value.
|
||
|
|
- `noteq`: tests if the flag value is unequal to the compared value.
|
||
|
|
- `gt`: tests if the flag value is greater than the compared value.
|
||
|
|
- `gte`: tests if the flag value is greater than or equal to the compared value.
|
||
|
|
- `lt`: tests if the flag value is less than the compared value.
|
||
|
|
- `lte`: tests if the flag value is less than or equal to the compared value.
|
||
|
|
- `has`: tests if the flag value contains the compared value.
|
||
|
|
- `nothave`: tests if the flag value does not contain the compared value.
|
||
|
|
|