Monitoring performance
To view the graphs for a ccloud³ VM, simply click on the relevant menu item in the dashboard. You will be taken directly to the graphs page. By default, four graphs are available for each ccloud³ VM:
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Traffic usage (Public): This graph shows public bandwidth usage in megabits per second.
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CPU usage: This shows the percentage of total processing power being used. User activities are shown in light blue and system processes in dark blue.
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Hard disk I/O: This graph shows hard disk read and write operations in megabytes per second.
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Memory usage: This shows the percentage of physical RAM in use.
The times shown in these graphs correspond to your local time zone, as determined by your browser.
If you have enabled the private network on the ccloud³ VM, you will have access to a fifth graph for monitoring bandwidth usage within the VPC network. As with the public bandwidth graph, the private bandwidth graph will only appear once there is actual network traffic.
The graph for private bandwidth shows VPC network bandwidth usage in megabits per second, with incoming traffic shown in dark purple and outgoing traffic in light purple.
Advanced Monitoring
The standard graphs in the ccloud³ VM use metrics collected by external tools. No additional services are required on the ccloud³ VM itself for this purpose. You can enable additional metrics graphs and alerting functions using the centron Metrics Agent, a small utility that runs on the ccloud³ VM.
You can install the Metrics Agent automatically when provisioning a ccloud³ VM or after it has been created.
Once the agent has been installed, you will have access to the following additional graphs, amongst others:
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Average load (Load Average): Measures whether the CPU is keeping up with the waiting processes. There are three lines showing the 1-, 5- and 15-minute average loads in blue, green and purple.
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Disk usage: Displays the percentage of disk space used on the ccloud³ VM’s hard drive.
The time frame options for the ccloud³ VM graphs are 1 hour, 24 hours, 7 days, 30 days or 1 year. The data resolution is based on the number of data points, with a fixed number of points used per plot. When you hover your mouse over one of the graphs, a line appears on all graphs, marking a specific point in time on the timeline. Along with a legend for the graph, all metrics for that specific point in time are displayed.