Dustin C. Hatch
0f24341e5c
Since all the nodes in the cluster run Fedora CoreOS now, we can deploy collectd as a container, managed by a DaemonSet. Note that while _collectd_ has to run as _root_ in order to collect a lot of metrics, it should not run with all privileges. It does need to run as a "super-privileged container" (`spc_t` SELinux domain), but it does _not_ need most kernel capabilities.
75 lines
1.7 KiB
YAML
75 lines
1.7 KiB
YAML
---
|
|
apiVersion: apps/v1
|
|
kind: DaemonSet
|
|
metadata:
|
|
name: collectd
|
|
labels:
|
|
app.kubernetes.io/name: collectd
|
|
app.kubernetes.io/component: collectd
|
|
spec:
|
|
selector:
|
|
matchLabels:
|
|
app.kubernetes.io/name: collectd
|
|
app.kubernetes.io/component: collectd
|
|
template:
|
|
metadata:
|
|
labels:
|
|
app.kubernetes.io/name: collectd
|
|
app.kubernetes.io/component: collectd
|
|
spec:
|
|
containers:
|
|
- name: collectd
|
|
image: git.pyrocufflink.net/containerimages/collectd
|
|
ports:
|
|
- containerPort: 9103
|
|
name: http
|
|
readinessProbe: &probe
|
|
httpGet:
|
|
port: http
|
|
path: /metrics
|
|
periodSeconds: 60
|
|
startupProbe:
|
|
<<: *probe
|
|
periodSeconds: 1
|
|
successThreshold: 1
|
|
failureThreshold: 30
|
|
timeoutSeconds: 1
|
|
securityContext:
|
|
capabilities:
|
|
add:
|
|
- DAC_READ_SEARCH
|
|
drop:
|
|
- ALL
|
|
seLinuxOptions:
|
|
type: spc_t
|
|
readOnlyRootFilesystem: true
|
|
volumeMounts:
|
|
- mountPath: /etc/collectd.d
|
|
name: config
|
|
readOnly: true
|
|
- mountPath: /host
|
|
name: host
|
|
- mountPath: /run
|
|
name: host
|
|
subPath: run
|
|
- mountPath: /tmp
|
|
name: tmp
|
|
hostNetwork: true
|
|
hostPID: true
|
|
hostIPC: true
|
|
tolerations:
|
|
- effect: NoExecute
|
|
operator: Exists
|
|
- effect: NoSchedule
|
|
operator: Exists
|
|
volumes:
|
|
- name: config
|
|
configMap:
|
|
name: collectd
|
|
- name: host
|
|
hostPath:
|
|
path: /
|
|
- name: tmp
|
|
emptyDir:
|
|
medium: Memory
|