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* Proper IP (re)allocation using ctdbd's IP allocation algorithm.
* Therefore, "ctdb ip" works sensibly.
* Add enable, disable, moveip.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 6d4b4b1293ba960d8fdf81958d6e8dd23c9d771a)
Make it easier to spot differences between desired output and actual
output.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit d132a8f4a8c0573ac447713a71911f02b6f0d73c)
Currently it spews out random messages about the file being missing.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 351ca413eec460330571ca8b01ad269728fe15df)
Make add_ip_to_iface() and delete_ip_from_iface() do their own locking
so the external script is no longer required.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 93f90caf91246074d9359bf31a39b26212cccc42)
This is no longer used by 13.per_ip_routing or anything else.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 2a2ea6c61a05af2d0765e964abcc7ef04047431e)
The relevant functions are now in that script.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 45c3476d12bf0f52966b72d286f101fce1382cd2)
The current version is quite difficult to read. This one is hopefully
clearer.
Major changes:
* The configuration file has a more forgiving syntax. Items can be
separated by arbitrary whitespace.
* Mappings between IP addresses and table IDs are no longer stored in
files in a state directory. Instead they are stored in
/etc/iproute2/rt_tables as mappings between table IDs and labels, as
allowed by the ip command. The current structure of the labels is
ctdb.<source-ip>. This means that once the labels are setup the
routing tables can be referenced by just knowing the source IP. As
with the old state directory, mappings in this file owned by CTDB
are deleted when CTDB shuts down.
* There are no release or re-add scripts.
- Release scripts are not necessary as an optimisation because of
the previous improvement (i.e. use of rt_tables). No lookup is
necessary to delete rules or flush tables.
- Re-add scripts are no longer used. Routes can still go missing
when removal of a primary IP from an interfaces (or similar)
causes removal of all other addresses (i.e. secondaries) and also
all associated routes. However, any missing routes are now
re-added in the "ipreallocated" event. This happens shortly after
takeip/releaseip/updateip and means that the routes will only be
re-added once. The window for missing routes is slightly bigger
but is not expected to be significant.
* The magic "__auto_link_local__" configuration value no longer causes
a dynamic configuration file to be maintained in a state directory.
The link local configuration is now generated when needed from the
public_addresses file. This greatly simplifies the code. This
approach is slightly less efficient but should not be significant.
The above changes mean that, apart from maintaining mappings in the
rt_tables file, there are no state files kept anymore.
Some utility functions only used by this script have been rewritten
and moved into this script. They will be removed from the functions
file by a future commit.
The route re-add code will also be removed from interface_modify.sh by
a future commit. It is currently harmless.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 0f7cbbb55f26cf3c953e98fe5e7eaa12f59fbf78)
Args:
1. Error message to be printed.
2. Option exit code (default 1)
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 97b0c138cb97e30db27c40b4ee1481109ae90c78)
Remove the old global setting for this unused tunable and add it as a new node flag. This node flag is only valid/defined within the takeover subsystem in the recovery daemon. Add async functions to collec the NoIPFailback settings for each node.
This will later e used to disqualify certain nodes from being takeover targets when we perform reallocation.
(This used to be ctdb commit 668f3e88a9e5f598706952b7140547640c85a5ed)
This can improve performance and stop clients from having to chase a rapidly migrating/bouncing record
(This used to be ctdb commit d0d98f7e45e5084b81335b004d50bddc80cdc219)
This can improve performance slightly on certain workloads where smbds frequently read from the same record
(This used to be ctdb commit 035c0d981bde8c0eee8b3f24ba8e2dc817e5b504)
UPDATE_RECORD to create a record to only apply to normal databases, not
persistent databases or else the net registry command breaks
and other persistent database creation/updates .
(This used to be ctdb commit 68390cb1e8c7f30be034b8ca6c9215b40147305b)
This will be the new long term stable branch for ctdb
Main new features are
read-only records: performance/scaling improvement for concurrent access to the same record from multiple nodes.
fetch-lock-collapse: performance/scaling improvement for concurrent write access to the same record from multiple nodes.
(This used to be ctdb commit 05e75dea9eaa0decc2909e0c2cf1715c81374200)
the referenced VNN structure is.
Also, remove the circular reference between the two objects KIPPCTP and VNN
(This used to be ctdb commit 02b62482164a3c69715949074feb7f191a29d534)
Instead, tie them together via referencing a permanent linked list hung off the ctdb structure.
(This used to be ctdb commit a95c02da6c67dc4bd8716b75318a4188301df6f9)
It is very misleading in ctdb_persistent.c, since it is used for non-persistent
dbs...
(This used to be ctdb commit a956fa3a27106d0154a3fb46987d61c0a6b7c768)
