First Step to do if no data is available for a KVM VM Monitor
In KVM all the data has been collected via CLI Commands. So if any of data is not retrieved properly in the UI, we can check it by executing CLI Commands.
The below table contails the List of CLI Commands used for each metrics present under the KVM VM Monitor:
Attributes | CLI Command | Output |
CPU: | $ virsh cpu-stats --total | test@APM-KVM-U1:~$ virsh cpu-stats --total centos7.0 Total: cpu_time 2089.714823565 seconds user_time 104.750000000 seconds system_time 330.430000000 seconds |
CPU utilization | Value of cpu_time | |
User | Value of user_time | |
System | Value of system_time | |
Memory: | virsh dommemstat <VMname> | virsh dommemstat centos7.0 —period 10 —live The above command is used to enable metrics test@APM-KVM-U1:~$ virsh dommemstat centos7.0 actual 4194304 swap_in 0 swap_out 0 major_fault 1424 minor_fault 19368780 unused 2776976 available 3882420 last_update 1544636808 rss 1567572 |
Ballooned Memory | ||
Read from Swap | Value of swap_in | |
Write into Swap | Value of swap_out | |
Disk I/O Fault Count | Value of major_fault | |
Page Fault Count | Value of minor_fault | |
RSS Memory | Value of rss | |
Total Memory | $ sudo virsh dominfo APM-C764-5 | Value of MaxMemory |
Used Memory | $ sudo virsh dominfo APM-C764-5 | Value of UsedMemory |
Free Memory | Max Memory - Used Memory | |
Memory Utilization | ||
Disk Details: | $virsh domblklist --details $virsh domblklist --details <VMname> | grep 'disk' $virsh domblkinfo <VM_Name> <Block_devName> virt-df | test@APM-KVM-U1:~$ virsh domblklist centos7.0 Target Source ------------------------------------------------ vda /var/lib/libvirt/images/centos7.0.qcow2 hda - test@APM-KVM-U1:~$ virsh domblkinfo centos7.0 vda Capacity: 107374182400 Allocation: 5553049600 Physical: 107390828544 |
Name | Value of Target | |
Source | Value of Source | |
Capacity | Value of Capacity | |
Used | Value of Allocation | |
Free | Capacity-Allocation | |
| Disk I/O Details: | $virsh domblkstat <VMname> <diskName> --human | test@APM-KVM-U1:~$ virsh domblkstat centos7.0 vda --human Device: vda number of read operations: 19405 number of bytes read: 541752832 number of write operations: 4209 number of bytes written: 31960576 number of flush operations: 651 total duration of reads (ns): 1047787890 total duration of writes (ns): 94970385161 total duration of flushes (ns): 140993649 |
Name | Value of 'Device' | |
Read Operations | Value of 'number of read operations' | |
Write Operations | Value of 'number of write operations' | |
Bytes Received | Value of 'number of bytes read' | |
Bytes Transmitted | Value of 'number of bytes written' | |
Time taken for Read | Value of ' total duration of reads (ns)' | |
Time taken for Write | Value of ' total duration of writes (ns)' | |
Network Interface: | $ virsh domiflist <VMName> | [test@APM-KVM-C7-1 ~]$ virsh domiflist APM-U18-3 Interface Type Source Model MAC ------------------------------------------------------- vnet1 bridge br0 rtl8139 52:54:00:b7:a5:f8 |
Name | Value of ' Interface' | |
Type | Value of ' Type' | |
Source | Value of ' Source' | |
Model | Value of ' Model' | |
MAC Address | Value of ' MAC' | |
Network Interface Utilization: | $ virsh domifstat <VMName> <InterfaceName> | test@APM-KVM-U1:~$ virsh domifstat centos7.0 vnet0 vnet0 rx_bytes 54127329 vnet0 rx_packets 450484 vnet0 rx_errs 0 vnet0 rx_drop 1066 vnet0 tx_bytes 47532 vnet0 tx_packets 352 vnet0 tx_errs 0 vnet0 tx_drop 0s |
Interface Name | ||
Received Bytes | Value of rx_bytes | |
Packets Received | Value of rx_packets | |
Transmitted Bytes | Value of tx_bytes | |
Packets Transmitted | Value of tx_packets | |
Configuration: | $ virsh dominfo <VMName> | test@APM-KVM-U1:~$ virsh dominfo centos7.0 Id: 11 Name: centos7.0 UUID: 684b1cd4-0969-4683-8134-e9ca021a7601 OS Type: hvm State: running CPU(s): 1 CPU time: 128.8s Max memory: 4194304 KiB Used memory: 4194304 KiB Persistent: yes Autostart: disable Managed save: no Security model: apparmor Security DOI: 0 Security label: libvirt-684b1cd4-0969-4683-8134-e9ca021a7601 (enforcing |
Id | Value of Id | |
Name | Value of Name | |
IP Address | ||
UUID | Value of UUID | |
OS Type | Value of OS Type | |
Installed OS | ||
State | Value of State | |
CPU(s) | Value of CPU(s) | |
Autostart | Value of Autostart |
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