This section is common to all the editions of IT360, as per the below constraints;
Enterprise Edition [Applicable to Probes only, and not applicable / relevant to the Central Server, since the configuration of the monitors happens only at the Probe level. However, you may see these discovered monitors from the Central Server]
MSP Edition [Applicable to Probes only, and not applicable / relevant to the Central Server, since the configuration of the monitors happens only at the Probe level. However, you may see these discovered monitors from the Central Server]
Applications Manager monitors the key performance indicators of Linux servers to detect any performance problems. These indicators include CPU, memory, disk, etc.
The Availability tab shows the availability history of the Linux server for the past 24 hours or 30 days. The Performance tab shows some key performance indicators of the Linux server such as physical memory utilization, CPU utilization, response time and swap memory utilization along with heat charts for these attributes. This tab also shows the health status and events for the past 24 hours or 30 days.
The List view lists all the Linux servers monitored by Applications Manager along with their overall availability and health status. It enables you to perform bulk admin configurations. Click on the individual monitors listed to view detailed performance metrics.
To view detailed performance metrics of a Linux server, click on the monitor name listed in the Availability or List View tabs. The performance metrics have been categorized into 4 different tabs:
This tab provides a high-level overview of the health and performance of the Linux server along with information pertaining to the processes and services running on the system.
The name of the Linux server monitor.
Denotes the health status of the Linux server(clear, critical, warning).
Denotes the type you are monitoring.
The host name of the Linux system.
The main OS installed on the system.
|Last Polled at||Specifies the time at which the last poll was performed.|
|Next Poll at||Specifies the time at which the next poll is scheduled.|
|Today's Availability||Shows the overall availability status of the server for the day. You can also view 7/30 reports and the current availability status of the server.|
You can use the Custom Fields option in the 'Monitor Information' section to configure additional fields for the monitor.
The overview tab shows dials for CPU, memory and disk utilization. You can click on these dials to view detailed graphs and charts for these attributes. The graphs available are History report, hour of day report, day of week report and heat chart. These graphs can be generated for both real time and historical data.
The CPU and memory utilization - last six hours graph shows the memory usage and CPU usage values for the last six hours. The attributes shown here are swap memory utilization, physical memory utilization (in % and MB) and CPU utilization (%).
The Breakup of CPU Utilization graph provides a break up of performance metrics for the entire system processor with attributes such as run queue, blocked process, user time(%), system time(%), I/O wait(%), idle time(%) and interrupts/sec.
The System Load graph provides you an idea of the amount of work that the system performs. The system load during the last one-, five- and fifteen-minute periods are represented by parameters such as Jobs in Minute, Jobs in 5 minutes and Jobs in 15 minutes.
The Process Details section shows information about the processes running on the Linux server. You can add processes for monitoring using the Add New Process option. You can also delete unwanted processes and enable/disable reports for specific processes. Click on any of the attributes listed to view more details.
The Monitors in this System section shows the availability and health of the monitors configured in this server. To add new monitors for monitoring, use the Add Monitors option.
This tab provides the CPU usage statistics of the Linux server. The tab includes two graphs - one that displays the CPU utilization by CPU Cores and another that shows the Breakup of CPU utilization - by CPU cores. You can view additional reports by clicking the graphs present in the Breakup of CPU Utilization - by CPU cores section. These reports include Break up of CPU Utilization (%) Vs Time, User Time (%) Vs Time, System Time (%) Vs Time, I/O Wait Time (%) Vs Time, Idle Time (%) Vs Time, CPU Utilization (%) Vs Time and Interrupts/sec Vs Time for all the CPU cores.
The CPU tab also shows the following performance metrics:
|Core||The name of the CPU core|
|User Time(%)||The percentage of time that the processor spends on User mode operations. This generally means application code.|
|The percentage of CPU kernel processes that are in use.|
|I/O Wait Time(%)||The time spent by the processor to waiting for I/O to complete.|
|Idle Time(%)||The time when the CPU is idle (not being used by any program)|
|CPU Utilization(%)||Specifies the total CPU used by the system|
|Interrupts/sec||The rate at which CPU handles interrupts from applications or hardware each second. If the value for Interrupts/sec is high over a sustained period of time, there could be hardware issues.|
You can also view graphs for these attributes by selecting the necessary CPU core and then choosing the appropriate attribute.
This tab displays disk usage and disk I/O statistics of the Linux server.
The name of the disk drive
Denotes how much disk space out of the total disk space has actually been used (in percentage)
The disk space used in mega bytes
|Free(%)||The percentage of total usable space on the disk that was free.|
|Free(MB)||The unallocated space on the disk in mega bytes.|
|Disk I/O Statistics|
|Transfers/sec||The number of read/write operations on the disk that occur each second.|
|Writes/sec||The percentage of elapsed time that the disk drive was busy servicing write requests.|
|Reads/sec||The percentage of elapsed time that the disk drive was busy servicing read requests.|
|% Busy Time||The percentage of time the disk was busy.|
|Average Queue Length||The average number of both read and write requests that were queued for the disk during the sample interval.|
You can also delete disks that have been physically removed using the Delete Orphaned Disk option.
This tab contains information about system configuration attributes.
|Host Name||The name of the system.|
|Domain||The name of the domain to which the system belongs.|
|OS Name||The name of the operating system instance.|
|OS Version||Version number of the operating system.|
|OS Release||The Linux distribution|
|Total Physical Memory (MB)||Total amount of physical memory as available to the operating system.|
|Total Swap Memory (MB)||Total amount of swap memory available.|
|Id||Unique identifier of a processor on the system|
|Model||The processor model type|
|Implementation||The processor family type.|
|Manufacturer||Name of the processor manufacturer|
|Speed(MHz)||Current speed of the processor|
|Cache (KB)||Size of the processor cache. A cache is an external memory area that has a faster access time than the main memory.|
|Network Interface Settings|
|Name||The name of the network adapter.|
|IP Address||The IP address configured for this network interface|
|MTU||The network medium in use.|
|Type||The type of network adapter.|
|Mac Address||The Media access control address for this network adapter. A MAC address is a unique 48-bit number assigned to the network adapter by the manufacturer. It uniquely identifies this network adapter and is used for mapping TCP/IP network communications.|
|Status||The current status of the network adapter.|
|Broadcast Address||The IP address to which messages are broadcast.|
|Name||Name of the printer.|
|Device||The name of the server that controls the printer.|
|Default||Indicates whether the printer is the default one. Values are either True or False.|
|Status||Current status of the printer.|
|Note: The data present in the configuration tab is not updated during every poll. So if you make any changes to the server configuration, you need to restart Applications Manager for those changes to be reflected in the 'Configuration' tab.|
The following are metrics pertaining to the hardware of Dell and HP servers.
|Power||Monitor power status and recieve alerts in case of a failure.|
|Fan||Monitor fan status and recieve alerts in case of a failure.|
|Temperature||Monitor temperature status and recieve alerts in case of a failure.|
|Processors||Monitor processor status and recieve alerts in case of a failure.|
|Disk||Monitor disk status and recieve alerts in case of a failure.|
|Array||Monitor array status and recieve alerts in case of a failure.|
|Chassis||Monitor chassis status and recieve alerts in case of a failure.|
If a component is functioning normally, the status indicator is green.
The status indicator changes to orange or red if a system component violates a performance threshold or is not functioning properly. Generally, an orange indicator signifies degraded performance.
A red indicator signifies that a component stopped operating or exceeded the highest threshold.
If the status is blank, then the health monitoring service cannot determine the status of the component.
Note: Currently hardware performance monitoring is only supported in SNMP monitoring mode.
Creating New Linux Server Monitor