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callback function which is called upon completion (or timeout) of the
control.
modify scanning of recmaster in the monitoring_cluster code to try the
api out
(This used to be ctdb commit c37843f1d97b169afec910e7ddb4e5ac12c3015c)
struct so that if we timeout a control we can print debug info such as
what opcode failed and to which node
we dont need the *status parameter to ctdb_client_control_state
create async versions of the getrecmaster control
pass a memory context to getrecmaster
(This used to be ctdb commit 558b680c82f830fba82c283c78c2de8a0b150b75)
ctdb_call() may pass a null pointer to _recv() and this would cause a
segfault.
fortunately there appears there are no critical users for this codepath
right now so the risk was more theoretical IF clients start using this
call it coult segfault.
change ctdb_control() to become fully async so we later can make
recovery daemon do the expensive controls to nodes in parallell instead
of in sequence
(This used to be ctdb commit 379789cda6ef049f389f10136aaa1b37a4d063a9)
node is not banned it the call is for a database record. i.e a REQ/REPLY
CALL/DMASTER
if we get such a call while banned, ignore the packet and write an entry
in the logfile
(This used to be ctdb commit 79eb0863609fbb12e28ebf734101b1d3f359b330)
places.
create a new helper function to generate new generation id values that
know about the invalid id and avoids generating it.
update the ctdb status tool to know about the invalid generation id and
print the string INVALID instead
(This used to be ctdb commit 4fbcd189543cb8a92227fdcd3d158472e558ccda)
not participating in the cluster
if a client tries to attach to a database while the node is inactive,
return an error back to the client and fail the attach
(This used to be ctdb commit b26949f3c8e54f3bc60da04d7b4ac69f301068fc)
and it should thus no longer serve any database access calls until it
has been reintroduced into the cluster.
when becoming banned, reset the local generation id to 1 to prevent
any further database access calls from other nodes from being processed.
(This used to be ctdb commit b531021db43ebaa5f5d0ace28c59913d359bd8a8)
see both the old flags as well as the new flags (so we can tell which
flags changed)
send the CTDB_SRVID_RECONFIGURE messages to connected nodes only, not to
every node, connected or not, in the cluster.
in the handler inside the recovery daemon which is invoked for node flag
change messages, only do a takeover_run() and redistribute the ip addresses IF it was the
disabled or the unhealthy flags that changed. Also send out the cluster
reconfigured message in this case.
If any of the other flags changed we dont need to do the takeover_run(0
here since that will be done during recovery.
(This used to be ctdb commit 5549b2058e2c148a8ca9d419123acf3247bb8829)
from the administrator, log this as 'Received SHUTDOWN command. Stopping
CTDB daemon.' so that the administrator will know when looking at the
log 'why' the ctdb service was terminated.
Previously the only thing logged was 'shutting down' which is not
detailed enough.
(This used to be ctdb commit 5b818c1b72b6594a8d6e45e1865026e3ce33ae63)
change initial errors that cause ctdb to fail to start from printf to
DEBUG(0
add a DEBUG(0 to log that the ctdb service is starting
(This used to be ctdb commit 680b4fbb283dd68567a62a83345f11a6cc1dd0e5)
public address remain at that node until either the node becomes
unhealthy or the original/primary node for that address becomes healthy
again.
Othervise what will happen is
1, if we ban a node, the banning code immediately does a
takeover_run() and reassigns the public address to a different node in
the cluster.
2, a few seconds later (at most) the recovery daemon will detect that
the number of nodes has shrunk and will initiate a recovery.
During the recovery the public address would again be assigned to a
node, this time a different node.
(This used to be ctdb commit 30a6b7a648e22873d8ce6289a3d6dc42c4b9e3b3)
specific script /etc/ctdb/events.d/00.ctdb
get rid of CTDB_EVENTS_SCRIPT and --event-script
(This used to be ctdb commit 81ccfaf838e5772d4a58eb6a70224b7b39aba9f3)
instead for from /etc/ctdb/events so that we can get better debugging
output in the logs when something fails in the scripts
(This used to be ctdb commit 4ed96b768aea1611e8002f7095d3c4d12ccf77a3)
tcp connection in the tree that stores the tcp connections to kill by
sending an RST
add a define that specified the keylength instead of hardcoding it as 4
(This used to be ctdb commit 6a8322cbae10f2c78b2e286c75aeb25ece12ea7f)
patches to smnotify to make it compile under AIX.
On AIX, we need to specify $(POPT_OBJ) explicitely
On AIX we can not use the -C flag to rpcgen since it is not implemented
On AIX we must explicitely force an #include of rpc/rpc.h in the idl
file since rpcgen does not automatically add it to the generated files
(This used to be ctdb commit 8c3e7ce645ec829bc465302831cc6b23452525d6)
we store in the tree and use a node destructor so that when the data is
talloc_free()d we also remove the node from the tree.
(This used to be ctdb commit b8dabd1811ebd85ee031563e95085f720a2fa04d)
description (src + dst sockaddr_in) in a linked list.
everytime we receive a captured packet from the network we had to walk
this list in linear time to see if the packet matched a connection we
wanted to RST.
which wouldnt scale very well.
replace the linked list with a redblack tree that is indexed by
src address, src port, dst address, dst port
to make checking whether the packet belongs to a connection we want to
RST very fast and scalable
the reason we need to capture packets when we want to kill a TCP
connection is because we must wait for an ACK coming back from the
remote host so that we can learn which sequence number to use in the
RST.
Most tcp today will ingore any and all RST segments unless the
sequencenumber lies exactly on the right edge of the window to make
spoofing RST a little bit more difficult.
(This used to be ctdb commit ced18caea8582af042287beb6333dd1f8ba3344d)
the data of the tree.
this callback makes it more convenient to manage cases where one might
want to insert multiple entries into the tree with the same key
rename the tree->tree pointer to tree->root since this is supposed to
point to the root of the tree
add a small test utility
(This used to be ctdb commit f6313bed9c53e0d1c36c9e08ac707e88e2a4fcd5)
