By monitoring multiple metrics of HiTSDB, such as the disk usage, number of timelines, and incremental number of time points, CloudMonitor helps you to monitor the running status of HiTSDB. CloudMonitor automatically collects data for HiTSDB metrics from the time after you purchase the HiTSDB service.

Monitoring service

  • Metrics
    Metric Dimension Unit  Minimum monitor granularity
    Disk usage  User and instance % 20 seconds
    Number of timelines  User and instance Count 20 seconds
    Incremental number of time points  User and instance Count/second 20 seconds
    Note
    • Monitoring data is saved for up to 31 days.
    • You can view the monitoring data for up to 14 consecutive days.
  • View monitoring data.
    1. Log on to the CloudMonitor Console.
    2. In the left-side navigation pane, choose Cloud Service Monitoring > HiTSDB.
    3. Click an instance name or click Monitoring Chart in the Action column to access the instance monitoring details page and view various metrics.
    4. Click a Time Range shortcut on the top of the page or use the specific selection function. Up to 14 consecutive days of metric data can be viewed.
    5. Click the Zoom In button in the upper-right corner of the monitor map to view the monitor larger image.

Alarm service

  • Description
    • Monitor: the monitoring indicator provided by hitsdb's service.
    • Statistical Cycle: the alarm system checks if your monitoring data exceeds the alarm threshold for this cycle. For example, if the statistical cycle of the alarm rule for memory usage is set to one minute, the system checks whether the memory usage has exceeded the threshold value every other minute.
    • Consecutive times: an alarm is triggered when the value of the monitoring metrics continuously exceeds the threshold value for the set consecutive cycles.
  • Set an alarm rule.
    1. Log on to the CloudMonitor Console.
    2. In the left-side navigation pane, choose Cloud Service Monitoring > HiTSDB.
    3. Click the instance name or the monitor chart in the operation to go to the instance monitoring details page.
    4. Click the Bell button in the upper-right corner of the monitoring chart or New Alarm Rule in the upper-right corner of the page to set an alarm rule for corresponding monitoring metrics of this instance.
  • Set multiple alarm rules.
    1. Log on to the CloudMonitor Console.
    2. In the left-side navigation pane, choose Cloud Service Monitoring > HiTSDB.
    3. When the instance list page selects the desired instance, click set alarm rule below the page, you can add alarm rules in bulk.
  • Parameters
    • Products: ECS, RDS, OSS, among others
    • Resource Range: the range for which an alarm rule takes effect. There are two alarm rule ranges available: All Resources and Instances.
      • All Resources: Indicates that the specified alarm rule applies to all HiTSDB instances under your name. For example, if you set the resource range to all resources, and set the alarm threshold for CPU usage to 80%, then an alarm is triggered when the CPU usage of any HiTSDB instance exceeds 80%. When you select All Resources, you can report alarms for up to 1,000 resources. If the number of your resources exceeds 1,000, alarms cannot be reported for some resources even if they exceed the threshold you set in your alarm rule. Therefore, for these scenarios, we recommend that you use application groups to divide resources by service before setting up alarm rules to avoid this issue.
      • Instances: Indicates that the specified rule only applies to a specific instance. For example, if you set the resource range to Instances and set the alarm threshold for CPU usage to 80%, an alarm is triggered when the CPU usage of the specified instance exceeds 80%.
    • Alarm Rule: the alarm rule name
    • Rule Describe: the main content of the alarm rule where you define the alarm-triggering conditions, or value threshold, for related metrics. For example, if you describe the rule as 1mins Disk Usage >= 30%, the alarm service will check every minute whether the disk usage within one minute meets or exceeds 30%.

      Consider the following example. For the alarm service in host monitoring, one data point is reported in 15 seconds for a single server metric, and 20 data points in five minutes. This relates to the following alarm rules.

      • 5mins Average CPU Usage > 90%: The average CPU usage value of the 20 data points in five minutes exceeds 90%.
      • 5mins CPU Usage Always > 90%: The CPU usage values of the 20 data points in five minutes all exceed 90%.
      • 5mins CPU Usage Once > 90%: The CPU usage value of at least one of the 20 data points in five minutes exceeds 90%.
      • Total 5mins Internet Outbound Traffic > 50 MB: The sum of the outbound traffic values of the 20 data points in five minutes exceeds 50 MB.
    • Mute For: the period of time that an alarm is muted so that alarm contacts do not receive any alarm notifications during this period. An alarm rule can be muted for up to 24 hours (or 1 day).
    • Triggered when threshold is exceeded for: An alarm notification is sent if the detected values reach the alarm rule threshold a certain number of times consecutively.
    • Effective Period: the period of time for which an alarm rule is effective. During this period of time, the alarm service checks metric data and determines whether to generate an alarm.
    • Notification Contact: a group of contacts who receive alarm notifications.
    • Notification Methods: Emails and DingTalk chatbot.
    • Email Subject: The email subject is set as the product name, metric, and instance ID involved in the alarm by default.
    • Email Remark: supplementary information customized for an alarm email. Remarks are sent as part of the alarm notification email body.
    • HTTP CallBack: Enter a URL accessible through the Internet and CloudMonitor will push the alarm information to the address through a POST request. Currently, only HTTP is supported.