openstack/openstack-manuals
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Updating the command line formatting

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- update the format of compute-live-migration-usage.rst
- update the "#" to "$"

Change-Id: If7053fe8c0ac96e3bf0557c3c50d081acc774a0b
This commit is contained in:
caoyuan 2017-04-01 22:46:31 +08:00 committed by Andreas Jaeger
parent b20a116315
commit 5b088f6b7c
1 changed files with 72 additions and 71 deletions
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143
doc/admin-guide/source/compute-live-migration-usage.rst
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@ -26,37 +26,37 @@ Manual selection of the destination host
#. Obtain the ID of the instance you want to migrate:
.. code-block:: console
.. code-block:: console
$ openstack server list
$ openstack server list
+--------------------------------------+------+--------+-----------------+------------+
| ID | Name | Status | Networks | Image Name |
+--------------------------------------+------+--------+-----------------+------------+
| d1df1b5a-70c4-4fed-98b7-423362f2c47c | vm1 | ACTIVE | private=a.b.c.d | ... |
| d693db9e-a7cf-45ef-a7c9-b3ecb5f22645 | vm2 | ACTIVE | private=e.f.g.h | ... |
+--------------------------------------+------+--------+-----------------+------------+
+--------------------------------------+------+--------+-----------------+------------+
| ID | Name | Status | Networks | Image Name |
+--------------------------------------+------+--------+-----------------+------------+
| d1df1b5a-70c4-4fed-98b7-423362f2c47c | vm1 | ACTIVE | private=a.b.c.d | ... |
| d693db9e-a7cf-45ef-a7c9-b3ecb5f22645 | vm2 | ACTIVE | private=e.f.g.h | ... |
+--------------------------------------+------+--------+-----------------+------------+
#. Determine on which host the instance is currently running. In this example,
``vm1`` is running on ``HostB``:
.. code-block:: console
.. code-block:: console
$ openstack server show d1df1b5a-70c4-4fed-98b7-423362f2c47c
$ openstack server show d1df1b5a-70c4-4fed-98b7-423362f2c47c
+----------------------+--------------------------------------+
| Field | Value |
+----------------------+--------------------------------------+
| ... | ... |
| OS-EXT-SRV-ATTR:host | HostB |
| ... | ... |
| addresses | a.b.c.d |
| flavor | m1.tiny |
| id | d1df1b5a-70c4-4fed-98b7-423362f2c47c |
| name | vm1 |
| status | ACTIVE |
| ... | ... |
+----------------------+--------------------------------------+
+----------------------+--------------------------------------+
| Field | Value |
+----------------------+--------------------------------------+
| ... | ... |
| OS-EXT-SRV-ATTR:host | HostB |
| ... | ... |
| addresses | a.b.c.d |
| flavor | m1.tiny |
| id | d1df1b5a-70c4-4fed-98b7-423362f2c47c |
| name | vm1 |
| status | ACTIVE |
| ... | ... |
+----------------------+--------------------------------------+
#. Select the compute node the instance will be migrated to. In this
example, we will migrate the instance to ``HostC``, because
@ -64,39 +64,39 @@ Manual selection of the destination host
.. code-block:: console
$ openstack compute service list
$ openstack compute service list
+----+------------------+-------+----------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+------------------+-------+----------+---------+-------+----------------------------+
| 3 | nova-conductor | HostA | internal | enabled | up | 2017-02-18T09:42:29.000000 |
| 4 | nova-scheduler | HostA | internal | enabled | up | 2017-02-18T09:42:26.000000 |
| 5 | nova-consoleauth | HostA | internal | enabled | up | 2017-02-18T09:42:29.000000 |
| 6 | nova-compute | HostB | nova | enabled | up | 2017-02-18T09:42:29.000000 |
| 7 | nova-compute | HostC | nova | enabled | up | 2017-02-18T09:42:29.000000 |
+----+------------------+-------+----------+---------+-------+----------------------------+
+----+------------------+-------+----------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+------------------+-------+----------+---------+-------+----------------------------+
| 3 | nova-conductor | HostA | internal | enabled | up | 2017-02-18T09:42:29.000000 |
| 4 | nova-scheduler | HostA | internal | enabled | up | 2017-02-18T09:42:26.000000 |
| 5 | nova-consoleauth | HostA | internal | enabled | up | 2017-02-18T09:42:29.000000 |
| 6 | nova-compute | HostB | nova | enabled | up | 2017-02-18T09:42:29.000000 |
| 7 | nova-compute | HostC | nova | enabled | up | 2017-02-18T09:42:29.000000 |
+----+------------------+-------+----------+---------+-------+----------------------------+
#. Check that ``HostC`` has enough resources for migration:
.. code-block:: console
.. code-block:: console
# openstack host show HostC
$ openstack host show HostC
+-------+------------+-----+-----------+---------+
| Host | Project | CPU | Memory MB | Disk GB |
+-------+------------+-----+-----------+---------+
| HostC | (total) | 16 | 32232 | 878 |
| HostC | (used_now) | 22 | 21284 | 422 |
| HostC | (used_max) | 22 | 21284 | 422 |
| HostC | p1 | 22 | 21284 | 422 |
| HostC | p2 | 22 | 21284 | 422 |
+-------+------------+-----+-----------+---------+
+-------+------------+-----+-----------+---------+
| Host | Project | CPU | Memory MB | Disk GB |
+-------+------------+-----+-----------+---------+
| HostC | (total) | 16 | 32232 | 878 |
| HostC | (used_now) | 22 | 21284 | 422 |
| HostC | (used_max) | 22 | 21284 | 422 |
| HostC | p1 | 22 | 21284 | 422 |
| HostC | p2 | 22 | 21284 | 422 |
+-------+------------+-----+-----------+---------+
- ``cpu``: Number of CPUs
- ``cpu``: Number of CPUs
- ``memory_mb``: Total amount of memory, in MB
- ``memory_mb``: Total amount of memory, in MB
- ``disk_gb``: Total amount of space for NOVA-INST-DIR/instances, in GB
- ``disk_gb``: Total amount of space for NOVA-INST-DIR/instances, in GB
In this table, the first row shows the total amount of resources
available on the physical server. The second line shows the currently
@ -111,17 +111,17 @@ Manual selection of the destination host
#. Confirm that the instance has been migrated successfully:
.. code-block:: console
.. code-block:: console
$ openstack server show d1df1b5a-70c4-4fed-98b7-423362f2c47c
$ openstack server show d1df1b5a-70c4-4fed-98b7-423362f2c47c
+----------------------+--------------------------------------+
| Field | Value |
+----------------------+--------------------------------------+
| ... | ... |
| OS-EXT-SRV-ATTR:host | HostC |
| ... | ... |
+----------------------+--------------------------------------+
+----------------------+--------------------------------------+
| Field | Value |
+----------------------+--------------------------------------+
| ... | ... |
| OS-EXT-SRV-ATTR:host | HostC |
| ... | ... |
+----------------------+--------------------------------------+
If the instance is still running on ``HostB``, the migration failed. The
``nova-scheduler`` and ``nova-conductor`` log files on the controller
@ -152,17 +152,17 @@ Monitoring the migration
#. Confirm that the instance is migrating:
.. code-block:: console
.. code-block:: console
$ openstack server show d1df1b5a-70c4-4fed-98b7-423362f2c47c
$ openstack server show d1df1b5a-70c4-4fed-98b7-423362f2c47c
+----------------------+--------------------------------------+
| Field | Value |
+----------------------+--------------------------------------+
| ... | ... |
| status | MIGRATING |
| ... | ... |
+----------------------+--------------------------------------+
+----------------------+--------------------------------------+
| Field | Value |
+----------------------+--------------------------------------+
| ... | ... |
| status | MIGRATING |
| ... | ... |
+----------------------+--------------------------------------+
#. Check progress
@ -264,7 +264,7 @@ network and disks, you may opt to cancel it manually.
.. code-block:: console
$ nova live-migration-abort INSTANCE_ID MIGRATION_ID
$ nova live-migration-abort INSTANCE_ID MIGRATION_ID
To make live-migration succeed, you have several options:
@ -278,9 +278,10 @@ To make live-migration succeed, you have several options:
.. caution::
Since the pause impacts
time keeping on the instance and not all applications tolerate incorrect
time settings, use this approach with caution.
Since the pause impacts
time keeping on the instance and not all applications
tolerate incorrect time settings, use this approach
with caution.
- **Enable auto-convergence**
@ -294,8 +295,8 @@ To make live-migration succeed, you have several options:
.. caution::
One possible downside of auto-convergence is the slowing down of the
instance.
One possible downside of auto-convergence is the slowing
down of the instance.
- **Enable post-copy**