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kube-bench/cfg/k3s-cis-1.8/etcd.yaml

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---
controls:
version: "k3s-cis-1.8"
id: 2
text: "Etcd Node Configuration"
type: "etcd"
groups:
- id: 2
text: "Etcd Node Configuration"
checks:
- id: 2.1
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
audit_config: "cat $etcdconf"
tests:
bin_op: and
test_items:
- path: "{.client-transport-security.cert-file}"
compare:
op: eq
value: "/var/lib/rancher/k3s/server/tls/etcd/server-client.crt"
- path: "{.client-transport-security.key-file}"
compare:
op: eq
value: "/var/lib/rancher/k3s/server/tls/etcd/server-client.key"
remediation: |
If running on with sqlite or a external DB, etcd checks are Not Applicable.
When running with embedded-etcd, K3s generates cert and key files for etcd.
These are located in /var/lib/rancher/k3s/server/tls/etcd/.
If this check fails, ensure that the configuration file $etcdconf
has not been modified to use custom cert and key files.
scored: false
- id: 2.2
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
audit_config: "cat $etcdconf"
tests:
test_items:
- path: "{.client-transport-security.client-cert-auth}"
compare:
op: eq
value: true
remediation: |
If running on with sqlite or a external DB, etcd checks are Not Applicable.
When running with embedded-etcd, K3s sets the --client-cert-auth parameter to true.
If this check fails, ensure that the configuration file $etcdconf
has not been modified to disable client certificate authentication.
scored: false
- id: 2.3
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
audit_config: "cat $etcdconf"
tests:
bin_op: or
test_items:
- path: "{.client-transport-security.auto-tls}"
compare:
op: eq
value: false
- path: "{.client-transport-security.auto-tls}"
set: false
remediation: |
If running on with sqlite or a external DB, etcd checks are Not Applicable.
When running with embedded-etcd, K3s does not set the --auto-tls parameter.
If this check fails, edit the etcd pod specification file $etcdconf on the master
node and either remove the --auto-tls parameter or set it to false.
client-transport-security:
auto-tls: false
scored: false
- id: 2.4
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are set as appropriate (Automated)"
audit_config: "cat $etcdconf"
tests:
bin_op: and
test_items:
- path: "{.peer-transport-security.cert-file}"
compare:
op: eq
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-server-client.crt"
- path: "{.peer-transport-security.key-file}"
compare:
op: eq
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-server-client.key"
remediation: |
If running on with sqlite or a external DB, etcd checks are Not Applicable.
When running with embedded-etcd, K3s generates peer cert and key files for etcd.
These are located in /var/lib/rancher/k3s/server/tls/etcd/.
If this check fails, ensure that the configuration file $etcdconf
has not been modified to use custom peer cert and key files.
scored: false
- id: 2.5
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
audit_config: "cat $etcdconf"
tests:
test_items:
- path: "{.peer-transport-security.client-cert-auth}"
compare:
op: eq
value: true
remediation: |
If running on with sqlite or a external DB, etcd checks are Not Applicable.
When running with embedded-etcd, K3s sets the --peer-cert-auth parameter to true.
If this check fails, ensure that the configuration file $etcdconf
has not been modified to disable peer client certificate authentication.
scored: false
- id: 2.6
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
audit_config: "cat $etcdconf"
tests:
bin_op: or
test_items:
- path: "{.peer-transport-security.auto-tls}"
compare:
op: eq
value: false
- path: "{.peer-transport-security.auto-tls}"
set: false
remediation: |
If running on with sqlite or a external DB, etcd checks are Not Applicable.
When running with embedded-etcd, K3s does not set the --peer-auto-tls parameter.
If this check fails, edit the etcd pod specification file $etcdconf on the master
node and either remove the --peer-auto-tls parameter or set it to false.
peer-transport-security:
auto-tls: false
scored: false
- id: 2.7
text: "Ensure that a unique Certificate Authority is used for etcd (Automated)"
audit_config: "cat $etcdconf"
tests:
test_items:
- path: "{.peer-transport-security.trusted-ca-file}"
compare:
op: eq
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-ca.crt"
remediation: |
If running on with sqlite or a external DB, etcd checks are Not Applicable.
When running with embedded-etcd, K3s generates a unique certificate authority for etcd.
This is located at /var/lib/rancher/k3s/server/tls/etcd/peer-ca.crt.
If this check fails, ensure that the configuration file $etcdconf
has not been modified to use a shared certificate authority.
scored: false