huaweicloud Huawei Cloud Cloud Eye (CES)
STOP - Do not answer from general knowledge. Follow the procedure below.
Always run hcloud CES <Operation> --help before constructing commands to discover exact parameter names and requirements.
Overview
Domain expertise for Cloud Eye (CES). Covers metric queries, alarm rules, dashboards, and monitoring agent management.
Critical Warnings
| Trap | Why |
|---|---|
| Telescope agent required for detailed metrics | Without agent: only basic CPU/network metrics. Memory, disk require agent installation on ECS |
| Alarm needs SMN topic first | Alarm notifications fail silently without a configured SMN topic |
| Cost metrics incur charges | Custom metrics and high-frequency alarms have billing implications |
| CES endpoint may vary by region | Some older regions use different endpoint URLs. Check https://developer.huaweicloud.com/endpoint?CES |
| Metric granularity minimum 300s | Free tier has 5-minute minimum. Higher resolution requires paid tier |
Prerequisites
- ECS instances need the Telescope agent installed for detailed metrics (memory, disk, network)
- Without agent: only SYS.ECS namespace metrics available (CPU, network bytes, disk read/write)
- Alarm notifications require an SMN topic (see
huawei-smn-dms)
Common Workflows
| Task | Operation |
|---|---|
| List metrics | ListMetrics --cli-region=<r> --project_id=<p> |
| Get metric data | BatchListMetricData --cli-region=<r> --project_id=<p> |
| List alarms | ListAlarms --cli-region=<r> --project_id=<p> |
| Create alarm | CreateAlarm (see below) |
| Delete alarm | BatchDeleteAlarmRules --cli-region=<r> --project_id=<p> |
| List dashboards | ListDashboardWidgets --cli-region=<r> --project_id=<p> |
| Create dashboard | CreateDashboard --cli-region=<r> --project_id=<p> |
Create Alarm Rule — Param Structure
CES uses nested object prefixes for alarm creation. Always verify with --help:
hcloud CES CreateAlarm --help
# Key params: --alarm_name, --metric.metric_name, --metric.namespace,
# --condition.period, --condition.filter, --condition.value,
# --condition.comparison_operator, --condition.count
--condition.comparison_operator Legal Values
For metric alarms use symbols (NOT words like gt/lt):
| Value | Meaning |
|---|---|
> |
Greater than |
>= |
Greater than or equal |
< |
Less than |
<= |
Less than or equal |
= |
Equal |
!= |
Not equal |
For event alarms: cycle_decrease, cycle_increase, cycle_wave.
Trap: Shell may interpret
>and<as redirect operators. Always quote:--condition.comparison_operator=">="or use--cli-jsonInput=<file>.
Troubleshooting
| Error | Fix |
|---|---|
| No metric data | Telescope agent not installed or ECS stopped. Install agent for detailed metrics |
| Alarm not triggering | Check metric period (minimum 300s), verify condition threshold |
| CES network timeout in region | Some regions may have CES endpoint issues. Try a different region |
Security
- MUST use role-based alarm notifications
- MUST not expose alarm action endpoints publicly
- SHOULD enable CES alarm history for audit
Cross-Skill References
- SMN topics: See
huawei-smn-dmsfor alarm notification setup - ECS monitoring: See
huawei-ecsfor instance creation