turbot/steampipe-mod-kubernetes-compliance

Control: ReplicaSet containers argument kubelet read-only port should be set to 0

Description

This check ensures that the container in the ReplicaSet has argument kubelet read-only port set to 0.

Usage

Run the control in your terminal:

powerpipe control run kubernetes_compliance.control.replicaset_container_argument_kubelet_read_only_port_0

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe control run kubernetes_compliance.control.replicaset_container_argument_kubelet_read_only_port_0 --share

SQL

This control uses a named query:

with container_list as (
select
c ->> 'name' as container_name,
trim('"' from split_part(co::text, '=', 2))::integer as value,
r.name as replicaset
from
kubernetes_replicaset as r,
jsonb_array_elements(template -> 'spec' -> 'containers') as c,
jsonb_array_elements(c -> 'command') as co
where
(co)::text LIKE '%--read-only-port=%'
), container_name_with_replicaset_name as (
select
r.name as replicaset_name,
r.uid as replicaset_uid,
r.path as path,
r.start_line as start_line,
r.end_line as end_line,
r.context_name as context_name,
r.namespace as namespace,
r.source_type as source_type,
r.tags as tags,
r._ctx as _ctx,
c.*
from
kubernetes_replicaset as r,
jsonb_array_elements(template -> 'spec' -> 'containers') as c
)
select
coalesce(r.replicaset_uid, concat(r.path, ':', r.start_line)) as resource,
case
when (r.value -> 'command') is null or not ((r.value -> 'command') @> '["kubelet"]') then 'ok'
when l.container_name is not null and (r.value -> 'command') @> '["kubelet"]' and (l.value = 0) then 'ok'
else 'alarm'
end as status,
case
when (r.value -> 'command') is null then r.value ->> 'name' || ' command not defined.'
when not ((r.value -> 'command') @> '["kubelet"]') then r.value ->> 'name' || ' kubelet not defined.'
else r.value ->> 'name' || ' read-only port is set to ' || (l.value) || '.'
end as reason,
r.replicaset_name as replicaset_name
, coalesce(context_name, '') as context_name, namespace, source_type, coalesce(path || ':' || start_line || '-' || end_line, '') as path
from
container_name_with_replicaset_name as r
left join container_list as l on r.value ->> 'name' = l.container_name and r.replicaset_name = l.replicaset;

Tags