fb3b47ea5b
VM diagnostics has been updated with v2.48 to include a standard formatting. This change will update the admin documentation to mention the new standard formatting. Change-Id: I2498ae5400ad0903f6084bacaf96f0b76731b5a3 Closes-bug: 1696033
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8.2 KiB
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180 lines
8.2 KiB
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=============================================
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Show usage statistics for hosts and instances
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=============================================
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You can show basic statistics on resource usage for hosts and instances.
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.. note::
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For more sophisticated monitoring, see the
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`ceilometer <https://launchpad.net/ceilometer>`__ project. You can
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also use tools, such as `Ganglia <http://ganglia.info/>`__ or
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`Graphite <http://graphite.wikidot.com/>`__, to gather more detailed
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data.
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Show host usage statistics
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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The following examples show the host usage statistics for a host called
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``devstack``.
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* List the hosts and the nova-related services that run on them:
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.. code-block:: console
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$ openstack host list
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+-----------+-------------+----------+
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| Host Name | Service | Zone |
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+-----------+-------------+----------+
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| devstack | conductor | internal |
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| devstack | compute | nova |
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| devstack | cert | internal |
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| devstack | network | internal |
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| devstack | scheduler | internal |
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| devstack | consoleauth | internal |
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+-----------+-------------+----------+
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* Get a summary of resource usage of all of the instances running on the host:
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.. code-block:: console
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$ openstack host show devstack
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+----------+----------------------------------+-----+-----------+---------+
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| Host | Project | CPU | MEMORY MB | DISK GB |
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+----------+----------------------------------+-----+-----------+---------+
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| devstack | (total) | 2 | 4003 | 157 |
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| devstack | (used_now) | 3 | 5120 | 40 |
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| devstack | (used_max) | 3 | 4608 | 40 |
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| devstack | b70d90d65e464582b6b2161cf3603ced | 1 | 512 | 0 |
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| devstack | 66265572db174a7aa66eba661f58eb9e | 2 | 4096 | 40 |
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+----------+----------------------------------+-----+-----------+---------+
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The ``CPU`` column shows the sum of the virtual CPUs for instances running on
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the host.
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The ``MEMORY MB`` column shows the sum of the memory (in MB) allocated to the
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instances that run on the host.
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The ``DISK GB`` column shows the sum of the root and ephemeral disk sizes (in
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GB) of the instances that run on the host.
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The row that has the value ``used_now`` in the ``PROJECT`` column shows the
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sum of the resources allocated to the instances that run on the host, plus
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the resources allocated to the virtual machine of the host itself.
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The row that has the value ``used_max`` in the ``PROJECT`` column shows the
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sum of the resources allocated to the instances that run on the host.
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.. note::
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These values are computed by using information about the flavors of the
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instances that run on the hosts. This command does not query the CPU
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usage, memory usage, or hard disk usage of the physical host.
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Show instance usage statistics
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* Get CPU, memory, I/O, and network statistics for an instance.
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#. List instances:
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.. code-block:: console
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$ openstack server list
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+----------+----------------------+--------+------------+-------------+------------------+------------+
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| ID | Name | Status | Task State | Power State | Networks | Image Name |
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+----------+----------------------+--------+------------+-------------+------------------+------------+
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| 84c6e... | myCirrosServer | ACTIVE | None | Running | private=10.0.0.3 | cirros |
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| 8a995... | myInstanceFromVolume | ACTIVE | None | Running | private=10.0.0.4 | ubuntu |
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+----------+----------------------+--------+------------+-------------+------------------+------------+
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#. Get diagnostic statistics:
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.. note::
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As of microversion v2.48, diagnostics information for all virt drivers will
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have a standard format as below. For more details on diagnostics
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response message see `server diagnostics api
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<https://developer.openstack.org/api-ref/compute/#servers-diagnostics-servers-diagnostics>`__
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documentation.
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.. code-block:: console
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$ nova diagnostics myCirrosServer
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+----------------+------------------------------------------------------------------------+
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| Property | Value |
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+----------------+------------------------------------------------------------------------+
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| config_drive | False |
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| cpu_details | [] |
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| disk_details | [{"read_requests": 887, "errors_count": -1, "read_bytes": 20273152, |
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| | "write_requests": 89, "write_bytes": 303104}] |
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| driver | libvirt |
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| hypervisor | qemu |
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| hypervisor_os | linux |
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| memory_details | {"used": 0, "maximum": 0} |
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| nic_details | [{"rx_packets": 9, "rx_drop": 0, "tx_octets": 1464, "tx_errors": 0, |
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| | "mac_address": "fa:16:3e:fa:db:d3", "rx_octets": 958, "rx_rate": null, |
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| | "rx_errors": 0, "tx_drop": 0, "tx_packets": 9, "tx_rate": null}] |
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| num_cpus | 0 |
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| num_disks | 1 |
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| num_nics | 1 |
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| state | running |
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| uptime | 5528 |
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+----------------+------------------------------------------------------------------------+
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``config_drive`` indicates if the config drive is supported on the
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instance.
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``cpu_details`` contains a list of details per vCPU.
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``disk_details`` contains a list of details per disk.
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``driver`` indicates the current driver on which the VM is running.
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``hypervisor`` indicates the current hypervisor on which the VM is running.
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``nic_details`` containts a list of details per vNIC.
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``uptime`` is the amount of time in seconds that the VM has been runnning.
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Diagnostics prior to v2.48:
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.. code-block:: console
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$ nova diagnostics myCirrosServer
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+---------------------------+--------+
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| Property | Value |
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+---------------------------+--------+
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| memory | 524288 |
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| memory-actual | 524288 |
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| memory-rss | 6444 |
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| tap1fec8fb8-7a_rx | 22137 |
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| tap1fec8fb8-7a_rx_drop | 0 |
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| tap1fec8fb8-7a_rx_errors | 0 |
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| tap1fec8fb8-7a_rx_packets | 166 |
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| tap1fec8fb8-7a_tx | 18032 |
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| tap1fec8fb8-7a_tx_drop | 0 |
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| tap1fec8fb8-7a_tx_errors | 0 |
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| tap1fec8fb8-7a_tx_packets | 130 |
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| vda_errors | -1 |
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| vda_read | 2048 |
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| vda_read_req | 2 |
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| vda_write | 182272 |
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| vda_write_req | 74 |
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+---------------------------+--------+
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* Get summary statistics for each project:
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.. code-block:: console
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$ openstack usage list
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Usage from 2013-06-25 to 2013-07-24:
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+---------+---------+--------------+-----------+---------------+
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| Project | Servers | RAM MB-Hours | CPU Hours | Disk GB-Hours |
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+---------+---------+--------------+-----------+---------------+
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| demo | 1 | 344064.44 | 672.00 | 0.00 |
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| stack | 3 | 671626.76 | 327.94 | 6558.86 |
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+---------+---------+--------------+-----------+---------------+
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