RabbitMQ 3.7.6-rc.2 发布，AMQP 消息服务器

内容简介：RabbitMQ 3.7.6-rc.2 已发布，这是常规维护版本的候选版，主要包括错误修复。 本次更新包含如下内容： Core Server Bug Fixes Max priority cap for queues is now enforced and set to 255. Applications that ...

RabbitMQ 3.7.6-rc.2 已发布，这是常规维护版本的候选版，主要包括错误修复。

本次更新包含如下内容：

Core Server

Bug Fixes

• Max priority cap for queues is now enforced and set to 255. Applications that rely on a higher number of priorities will break. Such applications must be updated to use no more than 255 priorities.

  GitHub issue: rabbitmq-server#1590

• Bulk deletion of exclusive queues when their owning connection closes has been optimized.

  GitHub issues: rabbitmq/rabbitmq-server#1566, rabbitmq/rabbitmq-server#1513

Enhancements

• On Erlang 20.2.3 or later, more optimal memory allocators will be used. On some workloads that leads
  to significant reduction in node's RAM consumption. The change is workload-specific, however, on the workloads
  tested that do introduce a negative effect (more RAM used) the difference was very small (about 1%).

  It is possible to go back to the previous settings, +MBas aoffcbf +MHas aoffcbf +MBlmbcs 5120 +MHlmbcs 5120 +MMmcs 10,
  by specifying them in the RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS environment variable.

  On Erlang/OTP releases older than 20.2.3 there will be no default changes.

  GitHub issue: rabbitmq/rabbitmq-server#1604

• connection.closed events now include client-provided connection name and more client details.
  That information is in turn available via the rabbitmq_event_exchange.

  GitHub issue: rabbitmq-server#1596

CLI Tools

Enhancements

• await_online_nodes <count> [--timeout <timeout>] is a new command that will wait until the target
  node's cluster has at least <count> nodes. The command supports a timeout. It is meant to simplify
  cluster provisioning automation and can be used as the very first check performed after starting a node.

  Note that the command requires at least one node to be running and reachable.

  GitHub issue: rabbitmq-cli#235

Management and Management Agent Plugins

Bug Fixes

• Queue metrics could be missing after a node restart or plugin [re-]enablement.

GitHub issue: rabbitmq/rabbitmq-management-agent#58

• rabbitmqadmin now correctly percent-encodes spaces in connection names.

GitHub issue: rabbitmq/rabbitmq-management#576

• When creating a new vhost, user permissions will only be granted to the users that exist in the
  internal database. If an external authentication/authorization service is used, the step is skipped.

GitHub issue: rabbitmq-management#531

• Virtual host imported from definitions or created via HTTP API will explicitly await for the vhost to initialise
  on all cluster nodes.

GitHub issue: rabbitmq/rabbitmq-management#575

LDAP Plugin

Bug Fixes

• LDAP connection pool now correctly purges connections in more failure scenarios (e.g. LDAP server restart)

  GitHub issue: rabbitmq-auth-backend-ldap#92

HTTP Authentication/Authorization Plugin

Enhancements

• 201 Created responses are now accepted from HTTP services that back the plugin.

  GitHub issue: rabbitmq-auth-backend-http#68

详细更新内容和源码下载：https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.7.6-rc.2

【声明】文章转载自：开源中国社区 [http://www.oschina.net]

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