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2020-09-02 19:15:41 -0500 获得奖牌  著名问题 (source)
2020-04-06 06:57:36 -0500 获得奖牌  老师 (source)
2020-03-29 14:58:27 -0500 回答问题 How can we overcome any type of sudden server failure?

It depends. For e.g a) Nova Compute: then you can configure the triggering of evacauation and migration procedure of the VMs to an healthy compute node. You can read more about it here: https://docs.openstack.org/nova/rocky...

b) Controllers: They run in a quorum and by deafult there are 3 running instances. So failure of any one of the server causes no issues.

c) Storage ( for e.g. volume storage in CEPH): Here the data is duplicated to additional server nodes in a cluster by replication or erasure coding. In ceph by default there are three server nodes in a cluster. So even if any one of the nodes fails, VM can still find its data from the remaining two health nodes of the cluster

2020-03-29 14:49:58 -0500 获得奖牌  拥护者 (source)
2019-12-02 00:50:57 -0500 获得奖牌  热门的问题 (source)
2019-11-28 10:23:27 -0500 获得奖牌  受欢迎的问题 (source)
2019-11-24 10:07:12 -0500 问了问题 Controller HA with 3 Nodes in a Quorum

Considering the following use case below, what would be default behaviour: Step-1) All three controller up and running Step-2) Shutdown 1st controller Step-3) Shutdown 2nd Controller: Cluster Quorum destroyed Step-4) Bring up 2nd controller:

Question: In step-4 , will pacemaker create the cluster automatically in step-4

2019-07-06 17:14:59 -0500 获得奖牌  受欢迎的问题 (source)
2019-07-01 23:30:45 -0500 获得奖牌  学生 (source)
2019-06-30 01:51:01 -0500 问了问题 Possibility of multi-site deployment with controllers at one site and with geographically located computes, storage at other sites ?

I am exploring ways to deploy a multi-site OpenStack deployment with controllers at one site and with multiple geographically located compute and storage nodes. For e.g: Site-1: 3 Controllers, some computes and storage Site-2: Compute, Storage Site-3: Compute, Storage ..and so on.
Considering this as a theoretical viable solution, what are some of the areas one should focus to have this up and running?

Best Regards, Purnendu Ghosh

2017-02-02 18:32:35 -0500 获得奖牌  著名问题 (source)
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2016-12-27 02:44:11 -0500 获得奖牌  粉丝
2016-12-15 13:14:21 -0500 回答问题 Using devstack unable to view images in horizon but CLI is ok

I investigated further by comparing the logs with a working installation.

it seems that the following folders/files are not generated in my case: /opt/stack/tacker-horizon/tacker_horizon/locale /opt/stack/tacker-horizon/tacker_horizon/__init__.pyc /opt/stack/tacker-horizon/tacker_horizon/openstack_dashboard/dashboards/nfv/__init__.pyc /opt/stack/tacker-horizon/tacker_horizon/openstack_dashboard/dashboards/nfv/locale

My local.conf reads as follows:


[[local|localrc]] HOST_IP=127.0.0.1

ADMIN_PASSWORD=devstack MYSQL_PASSWORD=devstack

RABBIT_PASSWORD=devstack

SERVICE_PASSWORD=$ADMIN_PASSWORD

SERVICE_TOKEN=devstack

PIP_USE_MIRRORS=False

USE_GET_PIP=1

OFFLINE=True

LOGFILE=$DEST/logs/stack.sh.log

SCREEN_LOGDIR=$DEST/logs/screen

VERBOSE=True

ENABLE_DEBUG_LOG_LEVEL=True

ENABLE_VERBOSE_LOG_LEVEL=True

Q_PLUGIN=ml2

Q_AGENT=openvswitch

Q_USE_PROVIDERNET_FOR_PUBLIC=False

FLOATING_RANGE=10.10.10.0/24

Q_FLOATING_ALLOCATION_POOL="start=10.10.10.101,end=10.10.10.201"

PUBLIC_NETWORK_NAME=external

PUBLIC_NETWORK_GATEWAY=10.10.10.1

PUBLIC_PHYSICAL_NETWORK=public

PUBLIC_BRIDGE=br-ext

NETWORK_GATEWAY=${NETWORK_GATEWAY:-15.0.0.1}

FIXED_RANGE=${FIXED_RANGE:-15.0.0.0/24}

enable_plugin tacker https://git.openstack.org/openstack/tacker (https://git.openstack.org/openstack/t...)

enable_plugin networking-sfc git://git.openstack.org/openstack/networking-sfc stable/newton

enable_service n-novnc

enable_service n-cauth

disable_service tempest


Please let me know if there is anything wrong.

2016-12-15 11:50:52 -0500 获得奖牌  编辑 (source)
2016-12-14 12:33:48 -0500 问了问题 Using devstack unable to view images in horizon but CLI is ok

After installing devstack ( stable/newton) i ovserve that horizon is not displaying the a) images b) instances Going through the horizon logs i observe the following:


sudo tail -f /var/log/apache2/horizon_error.log | sed 's/\x1b/\o033/g' 2016-12-14 09:22:36.437220 Internal Server Error: /dashboard/i18n/js/horizon+openstack_dashboard+tacker_horizon+tacker_horizon.openstack_dashboard.dashboards.nfv/

2016-12-14 09:22:36.437277 Traceback (most recent call last):

2016-12-14 09:22:36.437282 File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 132, in get_response

2016-12-14 09:22:36.437284 response = wrapped_callback(request, callback_args, *callback_kwargs)

2016-12-14 09:22:36.437287 File "/usr/local/lib/python2.7/dist-packages/django/views/i18n.py", line 315, in javascript_catalog

2016-12-14 09:22:36.437289 catalog, plural = get_javascript_catalog(locale, domain, packages)

2016-12-14 09:22:36.437291 File "/usr/local/lib/python2.7/dist-packages/django/views/i18n.py", line 207, in get_javascript_catalog

2016-12-14 09:22:36.437293 path = os.path.join(os.path.dirname(upath(p.__file__)), 'locale')

2016-12-14 09:22:36.437296 AttributeError: 'module' object has no attribute '__file__'


Any idea what could be the reson?