Pods monitoring with zabbix agent and running agent as sidecars

[davidbetko]

Hi, has anyone encountered an implementation where you run a Zabbix agent for monitoring in the sidecars section of a PostgreSQL pod deployment? I am currently trying to deploy it, but the operator is struggling with this, and the pods keep restarting with the following error:

time="2024-09-23T08:42:25Z" level=warning msg="error while syncing cluster state: could not sync statefulsets: could not recreate pods: skipping switchover: no switchover candidate found" cluster-name=mondev/postgres-dev-cluster pkg=cluster worker=0
time="2024-09-23T08:42:25Z" level=error msg="could not sync cluster: could not sync statefulsets: could not recreate pods: skipping switchover: no switchover candidate found" cluster-name=mondev/postgres-dev-cluster pkg=controller worker=0

sidecars implementation:
sidecars:
- name: zabbix-agent2
image: zabbix/zabbix-agent2:ubuntu-7.0.3
resources:
limits:
cpu: 250m
memory: 256M
requests:
cpu: 150m
memory: 100M
env:
- name: ZBX_SERVER_HOST
value: "IP address"
- name: ZBX_SERVER_PORT
value: "10051" # Zabbix server port
- name: ZBX_PASSIVE_ALLOW
value: "true" # Enable passive checks
- name: ZBX_ACTIVE_ALLOW
value: "false" # Enable active checks
- name: ZBX_HOSTNAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: ZBX_PASSIVE_PORT
value: "10050"
- name: ZBX_ACTIVE_PORT
value: "10051"
ports:
- containerPort: 10050
protocol: TCP
name: zbx-pas
- containerPort: 10051
protocol: TCP
name: zbx-actv