What's the transport_url for keystone service?

[yuwu xiong]

Hi,

In the keystone install guide, after installation, it updates two configuration items for keystone: mysql and fernet. I am wondering what's the configuration item for RabbitMQ...Looking into /etc/keystone/keystone.conf, it seems there is a transport_url setting in the [default] section, but it's not clear how to set the item, and for what purpose keystone uses rabbitmq.

It would be good to have a brief explanation and config example in the keystone install guide for that part.

thanks,
/bruin

-----------------------------------
Release: 0.1 on 2017-01-21 09:26
SHA: 92041c71f50a88b33d3afe19390ec9f3c2c4c4b7
Source: http://git.openstack.org/cgit/openstack/openstack-manuals/tree/doc/install-guide/source/keystone-install.rst
URL: http://docs.openstack.org/newton/install-guide-rdo/keystone-install.html

[Alexandra Settle (alexandra-settle)]

Hi Bruin,

From looking into the documentation myself, it appears that Keystone deprecated the settings for RabbitMQ in their conf file, which you can see here: https://github.com/openstack/keystone/blob/master/etc/keystone.conf.sample#L411

If I am correct, then the install guide does not document deprecated features.

Thank you :)

Alex

[Lance Bragstad (lbragstad)]

Hello Bruin,

Alex is exactly right. Since keystone is a single service, it doesn't have a use case to talk to other keystone nodes through a message bus (unlike inter-service communication between various nova components). Keystone does provide the option to use a message bus for delivering notifications though (i.e. if configured to do so, keystone will emit a notification when things change in keystone - other services can consume these notifications off the message bus and take action on them). When keystone first implemented notifications, we used the oslo-incubator code. We've since deprecated those options in favor of using official oslo libraries, which have their own dedicated configuration sections [0]. We deprecated the homegrown options in keystone in favor of the options provided through the official libraries.

Hopefully this helps clear things up.

[0] https://github.com/openstack/keystone/blob/fa63f893d487d54fe932e42ad9b53eea7a24932f/etc/keystone.conf.sample#L1781-L1800

[yuwu xiong (xiongyw)]

Thank you very much, Lance and Alexandra.

It's very clear... I can safely left that RabbitMQ section for keystone un-configured now :)
Btw, I was concerned with the dependencies of keystone, in the scenario of using Pacemaker to manage openstack services, that's why I wanted to know if keystone has a dependency on RabbitMQ...

Thanks again,
/bruin

------------------ 原始邮件 ------------------
发件人: "Lance Bragstad";<email address hidden>;
发送时间: 2017年1月23日(星期一) 晚上10:51
收件人: "熊育武"<email address hidden>;

主题: [Bug 1658396] Re: What's the transport_url for keystone service?

Hello Bruin,

Alex is exactly right. Since keystone is a single service, it doesn't
have a use case to talk to other keystone nodes through a message bus
(unlike inter-service communication between various nova components).
Keystone does provide the option to use a message bus for delivering
notifications though (i.e. if configured to do so, keystone will emit a
notification when things change in keystone - other services can consume
these notifications off the message bus and take action on them). When
keystone first implemented notifications, we used the oslo-incubator
code. We've since deprecated those options in favor of using official
oslo libraries, which have their own dedicated configuration sections
[0]. We deprecated the homegrown options in keystone in favor of the
options provided through the official libraries.

Hopefully this helps clear things up.

[0] https://github.com/openstack/keystone/blob/fa63f893d487d54fe932e42ad9b53eea7a24932f/etc/keystone.conf.sample#L1781-L1800

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https://bugs.launchpad.net/bugs/1658396

Title:
  What's the transport_url for keystone service?

Status in openstack-manuals:
  Won't Fix

Bug description:
  Hi,

  In the keystone install guide, after installation, it updates two
  configuration items for keystone: mysql and fernet. I am wondering
  what's the configuration item for RabbitMQ...Looking into
  /etc/keystone/keystone.conf, it seems there is a transport_url setting
  in the [default] section, but it's not clear how to set the item, and
  for what purpose keystone uses rabbitmq.

  It would be good to have a brief explanation and config example in the
  keystone install guide for that part.

  thanks,
  /bruin

  -----------------------------------
  Release: 0.1 on 2017-01-21 09:26
  SHA: 92041c71f50a88b33d3afe19390ec9f3c2c4c4b7
  Source: http://git.openstack.org/cgit/openstack/openstack-manuals/tree/doc/install-guide/source/keystone-install.rst
  URL: http://docs.openstack.org/newton/install-guide-rdo/keystone-install.html

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