kube-query

kube-query

kube-query is an extension for osquery, letting you visualize your cluster using sql queries.

Deployment

Prerequisites

Go v1.12+

build

$ export GO111MODULE=on 
$ go build kube-query.go 

Running kube-query

When running kube-query, you should always pass the -kubeconfig flag, specifying the path to your kubeconfig file.

osqueryi

When using the osqueryi tool you can easily register kube-query by passing the -socket parameter to kube-query on another process. For example:
./kube-query -socket="/path/to/osquery/socket" -kubeconfig="/path/to/kubeconfig.yml"

One way to get the path to the osquery socket is like this:

osqueryi --nodisable_extensions
osquery> select value from osquery_flags where name = 'extensions_socket';
+-----------------------------------+
| value                             |
+-----------------------------------+
| /Users/USERNAME/.osquery/shell.em |
+-----------------------------------+

There are many other options to automatically register extensions.

Example Queries

# query all kube-system pods
SELECT * FROM kubernetes_pods WHERE namespace="kube-system";

# query all containers created by kubernetes
SELECT * FROM kubernetes_containers;

# query all pods that runs with a privileged container   
SELECT * 
 FROM kubernetes_containers 
 JOIN kubernetes_pods 
 ON kubernetes_containers.pod_uid=kubernetes_pods.uid
 WHERE privileged="True";