34a567089b
This fixes mainly screens, computeroutput/userinput and also marks some filenames. A lot of prompts have been added. Change-Id: I864dc5b051bb297b61c9b2ed5464f9a35306bd68 Partial-Bug: #1217503
101 lines
6.3 KiB
XML
101 lines
6.3 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<section xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0" xml:id="usage_statistics">
|
|
<title>Show usage statistics for hosts and instances</title><para xlink:href="http://graphite.wikidot.com">You can show basic
|
|
statistics on resource usage for hosts and instances.</para>
|
|
<note> <para xlink:href="http://graphite.wikidot.com">For more sophisticated
|
|
monitoring, see the <link
|
|
xlink:href="https://launchpad.net/ceilometer"
|
|
>Ceilometer</link> project, which is under
|
|
development. You can also use tools, such as <link
|
|
xlink:href="http://ganglia.info/">Ganglia</link> or
|
|
<link xlink:href="http://graphite.wikidot.com/"
|
|
>Graphite</link>, to gather more detailed data.</para></note>
|
|
<procedure xml:id="host_usage_statistics">
|
|
<title>To show host usage statistics</title>
|
|
<step><para>List the hosts and the nova-related services that run on
|
|
them:</para><screen><prompt>$</prompt> <userinput>nova host-list</userinput>
|
|
<computeroutput>+------------------+-------------+----------+
|
|
| host_name | service | zone |
|
|
+------------------+-------------+----------+
|
|
| devstack-grizzly | conductor | internal |
|
|
| devstack-grizzly | compute | nova |
|
|
| devstack-grizzly | cert | internal |
|
|
| devstack-grizzly | network | internal |
|
|
| devstack-grizzly | scheduler | internal |
|
|
| devstack-grizzly | consoleauth | internal |
|
|
+------------------+-------------+----------+</computeroutput></screen>
|
|
</step>
|
|
<step><para>Get a summary of resource usage of all of the instances running
|
|
on the host.</para>
|
|
<screen><prompt>$</prompt> <userinput>nova host-describe <replaceable>devstack-grizzly</replaceable></userinput>
|
|
<computeroutput>+------------------+----------------------------------+-----+-----------+---------+
|
|
| HOST | PROJECT | cpu | memory_mb | disk_gb |
|
|
+------------------+----------------------------------+-----+-----------+---------+
|
|
| devstack-grizzly | (total) | 2 | 4003 | 157 |
|
|
| devstack-grizzly | (used_now) | 3 | 5120 | 40 |
|
|
| devstack-grizzly | (used_max) | 3 | 4608 | 40 |
|
|
| devstack-grizzly | b70d90d65e464582b6b2161cf3603ced | 1 | 512 | 0 |
|
|
| devstack-grizzly | 66265572db174a7aa66eba661f58eb9e | 2 | 4096 | 40 |
|
|
+------------------+----------------------------------+-----+-----------+---------+</computeroutput></screen>
|
|
<para>The <literal>cpu</literal> column shows the sum of
|
|
the virtual CPUs for instances running on the host.</para>
|
|
<para>The <literal>memory_mb</literal> column shows the
|
|
sum of the memory (in MB) allocated to the instances
|
|
that run on the hosts.</para>
|
|
<para>The <literal>disk_gb</literal> column shows the sum
|
|
of the root and ephemeral disk sizes (in GB) of the
|
|
instances that run on the hosts.</para>
|
|
<note> <para>These values are computed by using only information
|
|
about the flavors of the instances that run on the
|
|
hosts. This command does not query the CPU usage,
|
|
memory usage, or hard disk usage of the physical
|
|
host.</para> </note> </step> </procedure>
|
|
<procedure xml:id="instance_usage_statistics">
|
|
<title>To show instance usage statistics</title>
|
|
<step>
|
|
<para>Get CPU, memory, I/O, and network statistics for an
|
|
instance.</para>
|
|
<para>First, list instances:</para>
|
|
<screen><prompt>$</prompt> <userinput>nova list</userinput>
|
|
<computeroutput>+--------------------------------------+----------------------+--------+------------+-------------+------------------+
|
|
| ID | Name | Status | Task State | Power State | Networks |
|
|
+--------------------------------------+----------------------+--------+------------+-------------+------------------+
|
|
| 84c6e57d-a6b1-44b6-81eb-fcb36afd31b5 | myCirrosServer | ACTIVE | None | Running | private=10.0.0.3 |
|
|
| 8a99547e-7385-4ad1-ae50-4ecfaaad5f42 | myInstanceFromVolume | ACTIVE | None | Running | private=10.0.0.4 |
|
|
+--------------------------------------+----------------------+--------+------------+-------------+------------------+</computeroutput></screen>
|
|
<para>Then, get diagnostic statistics:</para>
|
|
<screen><prompt>$</prompt> <userinput>nova diagnostics myCirrosServer</userinput>
|
|
<computeroutput>+------------------+----------------+
|
|
| Property | Value |
|
|
+------------------+----------------+
|
|
| vnet1_rx | 1210744 |
|
|
| cpu0_time | 19624610000000 |
|
|
| vda_read | 0 |
|
|
| vda_write | 0 |
|
|
| vda_write_req | 0 |
|
|
| vnet1_tx | 863734 |
|
|
| vnet1_tx_errors | 0 |
|
|
| vnet1_rx_drop | 0 |
|
|
| vnet1_tx_packets | 3855 |
|
|
| vnet1_tx_drop | 0 |
|
|
| vnet1_rx_errors | 0 |
|
|
| memory | 2097152 |
|
|
| vnet1_rx_packets | 5485 |
|
|
| vda_read_req | 0 |
|
|
| vda_errors | -1 |
|
|
+------------------+----------------+</computeroutput></screen>
|
|
</step>
|
|
<step> <para>Get summary statistics for each tenant:</para>
|
|
<screen><prompt>$</prompt> <userinput>nova usage-list</userinput>
|
|
<computeroutput>Usage from 2013-06-25 to 2013-07-24:
|
|
+----------------------------------+-----------+--------------+-----------+---------------+
|
|
| Tenant ID | Instances | RAM MB-Hours | CPU Hours | Disk GB-Hours |
|
|
+----------------------------------+-----------+--------------+-----------+---------------+
|
|
| b70d90d65e464582b6b2161cf3603ced | 1 | 344064.44 | 672.00 | 0.00 |
|
|
| 66265572db174a7aa66eba661f58eb9e | 3 | 671626.76 | 327.94 | 6558.86 |
|
|
+----------------------------------+-----------+--------------+-----------+---------------+</computeroutput></screen>
|
|
</step>
|
|
</procedure>
|
|
</section>
|