doc/dev: add IRC information to dev guide

In days of yore, the Developer Guide linked to the
IRC page at ceph.io. After the 2021 rewriting of
ceph.io, a new era began, and that page was no
longer easily accessible (it could still be found
at old.ceph.com, but this was deprecated).

Anyway, that IRC information should be included in
the docs. This PR makes sure that the IRC
information is included in the docs.

Signed-off-by: Zac Dover <zac.dover@gmail.com>

diff --git a/doc/dev/developer_guide/essentials.rst b/doc/dev/developer_guide/essentials.rst
index ad3604966ae342f6cc379544ff67c4baefddb753..a4fbdec2234197f31e00d610daffc3f9276a767e 100644 (file)
--- a/doc/dev/developer_guide/essentials.rst
+++ b/doc/dev/developer_guide/essentials.rst
@@ -95,7 +95,7 @@ Mailing lists
 -------------
 
 Ceph Development Mailing List
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 The ``dev@ceph.io`` list is for discussion about the development of Ceph,
 its interoperability with other technology, and the operations of the
 project itself.
@@ -108,7 +108,7 @@ body of the message::
 
 
 Ceph Client Patch Review Mailing List
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 The ``ceph-devel@vger.kernel.org`` list is for discussion and patch review
 for the Linux kernel Ceph client component. Note that this list used to
 be an all-encompassing list for developers. When searching the archives, 
@@ -122,7 +122,7 @@ of the message::
 
 
 Other Ceph Mailing Lists
-^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~
 
 There are also `other Ceph-related mailing lists`_.
 
@@ -139,8 +139,43 @@ using `Internet Relay Chat`_.
 
 .. _`Internet Relay Chat`: http://www.irchelp.org/
 
-See ``https://ceph.com/irc/`` for how to set up your IRC
-client and a list of channels.
+The Ceph community gathers in the #ceph channel of the Open and Free Technology
+Community (OFTC) IRC network.
+
+Created in 1988, Internet Relay Chat (IRC) is a relay-based, real-time chat
+protocol. It is mainly designed for group (many-to-many) communication in
+discussion forums called channels, but also allows one-to-one communication via
+private message. On IRC you can talk to many other members using Ceph, on
+topics ranging from idle chit-chat to support questions. Though a channel might
+have many people in it at any one time, they might not always be at their
+keyboard; so if no-one responds, just wait around and someone will hopefully
+answer soon enough.
+
+Registration
+~~~~~~~~~~~~
+
+If you intend to use the IRC service on a continued basis, you are advised to
+register an account. Registering gives you a unique IRC identity and allows you
+to access channels where unregistered users have been locked out for technical
+reasons.
+
+
+Channels
+~~~~~~~~
+
+To connect to the OFTC IRC network, download an IRC client and configure it to
+connect to ``irc.oftc.net``. Then join one or more of the channels. Discussions
+inside #ceph are logged and archives are available online.
+
+Here are the real-time discussion channels for the Ceph community:
+
+  -  #ceph
+  -  #ceph-devel
+  -  #cephfs
+  -  #ceph-dashboard
+  -  #ceph-orchestrators
+  -  #sepia
+
 
 .. _submitting-patches:
 
@@ -176,7 +211,7 @@ build errors when you attempt a local build, follow the procedure below to
 clean your source tree.
 
 Cleaning the Source Tree
-^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~
 
 .. prompt:: bash $
 
@@ -191,7 +226,8 @@ Cleaning the Source Tree
    git clean -fdx; git submodule foreach git clean -fdx
 
 Building Ceph with ccache
-^^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
 ``ccache`` is available as a package in most distros. To build ceph with
 ccache, run the following command.
 
@@ -200,7 +236,8 @@ ccache, run the following command.
   cmake -DWITH_CCACHE=ON ..
 
 Using ccache to Speed Up Build Times
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
 ``ccache`` can be used for speeding up all builds of the system. For more
 details, refer to the `run modes`_ section of the ccache manual. The default
 settings of ``ccache`` can be displayed with the ``ccache -s`` command.