authors/changelog update for 2.18.0 release

Change-Id: Ia1b78aa40b1f157b513428cef59e69077b2aaee7

1 files changed, 74 insertions, 0 deletions

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+swift (2.18.0)
+
+    * Added container sharding, an operator controlled feature that
+      may be used to shard very large container databases into a
+      number of smaller shard containers. This mitigates the issues
+      with one large DB by distributing the data across multiple
+      smaller databases throughout the cluster. Please read the full
+      overview at
+      https://docs.openstack.org/swift/latest/overview_container_sharding.html
+
+    * Provide an S3 API compatibility layer. The external "swift3"
+      project has been imported into Swift's codebase as the "s3api"
+      middleware.
+
+    * Added "emergency mode" hooks in the account and container replicators.
+      These options may be used to prioritize moving handoff
+      partitions to primary locations more quickly. This helps when
+      adding capacity to a ring.
+
+      - Added `-d <devs>` and `-p <partitions>` command line options.
+
+      - Added a handoffs-only mode.
+
+    * Add a multiprocess mode to the object replicator. Setting the
+      "replicator_workers" setting to a positive value N will result
+      in the replicator using up to N worker processes to perform
+      replication tasks. At most one worker per disk will be spawned.
+
+      Worker process logs will have a bit of information prepended so
+      operators can tell which messages came from which worker. The
+      prefix is "[worker M/N pid=P] ", where M is the worker's index,
+      N is the total number of workers, and P is the process ID. Every
+      message from the replicator's logger will have the prefix
+
+    * The object reconstructor will now fork all available worker
+      processes when operating on a subset of local devices.
+
+    * Add support for PROXY protocol v1 to the proxy server. This
+      allows the Swift proxy server to log accurate client IP
+      addresses when there is a proxy or SSL-terminator between the
+      client and the Swift proxy server.  Example servers supporting
+      this PROXY protocol include stunnel, haproxy, hitch, and
+      varnish. See the sample proxy server config file for the
+      appropriate config setting to enable or disable this
+      functionality.
+
+    * In the ratelimit middleware, account whitelist and blacklist
+      settings have been deprecated and may be removed in a future
+      release. When found, a deprecation message will be logged.
+      Instead of these config file values, set X-Account-Sysmeta-
+      Global-Write-Ratelimit:WHITELIST and X-Account-Sysmeta-Global-
+      Write-Ratelimit:BLACKLIST on the particular accounts that need
+      to be whitelisted or blacklisted. System metadata cannot be added
+      or modified by standard clients. Use the internal client to set sysmeta.
+
+    * Add a --drop-prefixes flag to swift-account-info,
+      swift-container-info, and swift-object-info. This makes the
+      output between the three more consistent.
+
+    * statsd error messages correspond to 5xx responses only. This
+      makes monitoring more useful because actual errors (5xx) will
+      not be hidden by common user requests (4xx). Previously, some 4xx
+      responses would be included in timing information in the statsd
+      error messages.
+
+    * Truncate error logs to prevent log handler from running out of buffer.
+
+    * Updated requirements.txt to match global exclusions and formatting.
+
+    * tempauth user names now support unicode characters.
+
+    * Various other minor bug fixes and improvements.
+
+
 swift (2.17.0)
 
     * Added symlink objects support.