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We were potentially leaving a node unable to serve requests for too
long.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 5be8610ffa33db49e33949560d0ef2fa5f3c0c73)
This was defaulting to just "service nfs restart", which doesn't have
the workarounds we need.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 0f462e9e9fe12b595f3c7452123db8e69548abd6)
Otherwise we might short-circuit events that are run only once and
actually need to do something.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit c4f9e8a43540bc049b2771e0a2d76d37b9d17331)
Otherwise there can be strange error messages from services
stopping/starting, without any context.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 8bcf7ab164429ddc0ae530133e114f186a8146dd)
"service nfs restart" can fail. To stop nfsd it sends a SIGINT and
nfsd might take a while to process it if the system is loaded.
Starting nfsd may then fail because resources are still in use.
This does some /proc magic to tell nfsd to do no more processing. It
then runs service stop, kills nfsd with SIGKILL, and then runs service
start. This is much less likely to fail.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit a9bf4f82852975b0b627f61ceb2d23401f630805)
From Michael Anderson,
initialize the inqueue element of the ctdb structure to NULL,
else it might be used uninitialized and cause a segv.
(This used to be ctdb commit 775d02180b825ae32d6536eaf2059884d5fed9f4)
has failed.
We dont need to rebuild the databases in this situation, we just
need to try again to sort out the ip address allocations.
(This used to be ctdb commit 044c398ffea23d36ee033c8ddf07d11028197346)
scheduler for the child.
Use ctdb_fork() from callers where we dont want the child to be running
at real-time privilege.
(This used to be ctdb commit 58795a4c9e0624e20fa3e0023b65127053edd103)
Revert this patch:
commit 482c302d46e2162d0cf552f8456bc49573ae729d
We may need to use real-time processes for the main daemon and the recovery daemon to handle the cases where systems come under very high loads.
(This used to be ctdb commit 08bef9dcab6e4da15fc783f8624e5ed09aa060b5)
availability at all (since we cant restart it, there is not point checking
if it is alive)
(This used to be ctdb commit 6075e85ba6c0f58fd1ab2ce3b09dd3d6ff491365)
Httpd can be very slow to start on some platforms,
wait 5 monitor intervals before we try to restart it if
it has not bound to port 80 yet.
After 10 failed intervals, flag the node as unhealthy.
(This used to be ctdb commit 6ec1993aa5f2778b8227ce5f6eca0d19e4ae9788)
Try to restart LOCKD after 10 failures and
flag the node as unhealthy after 15 failures
(This used to be ctdb commit 5a67889c9166835aef3443051812d14af07dfca5)
Net serverid wipe can take a bit of time sometimes so background it.
Only perform auto start/stop of the managed service on the monitor event
(This used to be ctdb commit deba5cbbf7703a1a24ce88a06c73fca056e05521)
After finishing "ctdb addip" wait for an implicit "iptakeover" to complete
the assignment to a node.
This makes it more wasteful and timeconsuming when adding multiple ips
at once, or the same ip to multiple nodes,
but makes it easier to script the use of this command.
(This used to be ctdb commit d86cbf3d7d426c558d110d67dc985634c754a522)
flag the interface as initially being "link ok"
so that we can add it and startup.
The eventscript can later drop the flag if required
(This used to be ctdb commit 720849b756c825fb8b285f09972a8c39f1888a99)
Add an input queue where we keep received pdus we have not yet processed
This allows us to perform SYNC calls from an ASYNC callback
(This used to be ctdb commit c111e98d3ad7bd3d09f4081e9bb1443d3722672f)
(Imported from SAMBA commit 09a6538969ac).
Chris Cowan tracked down a SEGV in sub_alloc: idp->level can actually
be equal to 7 (MAX_LEVEL) there, as it can be in sub_remove.
(We unfairly blamed a shift of a signed var for this crash in commit
2db1987f5a).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(This used to be ctdb commit 73764104356d3738d9d20a9d06ce51535f74f475)
when we migrate a non-empty record onto the node
or a non-empty record off the node
When we migrate a record back to the lmaster and yield the dmaster role,
inspect this flag if if it is still not set, we can delete the record from
the local database as soon as we have migrated it back to the lmaster.
(This used to be ctdb commit a8cc35191df1cd4b866897df71d317ce5f198cb5)
ctdb readkey <dbid> <key>
ctdb writekey <dbid> <key> <value>
these are mainly intended for debugging of databases and dmaster migration issues
(This used to be ctdb commit 70c2e7dd04727371590fb94579ffd20318fbeb58)
make changes to ctdb event scripts to support NFS-Ganesha.
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
(This used to be ctdb commit 7298588ed54492f106954c893dd86b0a36783470)
but thinks it is still unassigned (-1).
add code to the recovery daemon to detect this case and trigger a reallocation
so that the ip gets covered
and change the takeip code to allow for this condition, taking on an ip address that is
already hosted.
cq s1021073
(This used to be ctdb commit 9020baf27cab7821c9094cda185206fb7af0fee7)
We put the ip on loopback just to make sure we would still interoperate with
non-standard configurations on unix-KDC, that are configured to verify the optional
HostAddresses field.
This is not required for AD, since AD does not use this field, and is replaced in
unix land with other/better mechanisms than this "dodgy" check.
This makes it "easier" for applications that have bound to the natgw address
to detect a socket problem and try to reconnect/recover if the ip address
is completely missing from the system.
At the same time, use the winbind specific hook that exists to explicitely tell winbindd : this address is gone, so if you have bound to it, this is a good time to close and rebind your socket.
cq 1020333
(This used to be ctdb commit 0da94869d2912b2a412ba3fbd2137d88ce4e4389)
ctdb_service_start() currently succeeds if ctdb_counter_init()
succeeds.
This changes it to fail when a service start fails.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit ddb73962d72d933bf0edc28be0dbb45bea7e5ef4)
When the value of $CTDB_MANAGES_SAMBA or $CTDB_MANAGES_WINBIND (or
corresponding changes are made to $CTDB_MANAGED_VERSIONS), the
associated service should be started or stopped as necessary.
This add calls to ctdb_start_stop_service() to manage
starting/stopping samba and winbind.
An associated cleanup is made to the initial checks that one of
$CTDB_MANAGES_SAMBA or $CTDB_MANAGES_WINBIND is set, replacing them
with calls to is_ctdb_managed_service().
To handle the winbind cases ctdb_start_stop_service() and
is_ctdb_managed_service() are updated to take an optional service name
parameter.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit d98f175e8420d921a123ae9c0ce00945350b1537)
update nfs to try to restart the service after 10 consecutive failures
and to flag the node unhealthy after 15
add similar function to mountd
(This used to be ctdb commit 1569a54bb82fc433895ed68f816cf48399ad9d40)
Rename loadconfig() to _loadconfig(). Add a new loadconfig() that
simply calls _loadconfig().
This makes it easy for the test suite to override loadconfig().
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 1d77a3adfff893b3c01b87f791e72c0d3148425c)
These failures are sometimes the result of slow restarts so we want to
avoid dirtying the logs or marking a node unhealthy because of them,
unless they are excessive.
For these 2 cases we use the existing fail counting code but hack a
temporary service_name in a subshell to allow separate fail counts.
We also update ctdb_check_rpc() so that it captures the error output
from rpcinfo and we add a message including the service name to the
beginning. The error is printed to stdout but is also stored in
ctdb_check_rpc_out to allow it to be conditionally used by the caller.
This function also now returns non-zero rather than exiting on
failure.
Other direct rpcinfo calls are relaced by called to ctdb_check_rpc()
for consistency.
Option handling code for service restarts is cleaned up so that fits
in 80 columns. A more informative restart messageis now used in all
cases, printing the exact command being used to start a service.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 79c25fe241cf5d8f92e23d3736823ebaf4e1769d)
since if they are the same for whatever reason this triggers the system
to go into an infinite loop and is unrobust
The scriptds have been changed instead to be able to cope with this
situation for enhanced robustness
During takeover_run and when merging all ip allocations across the cluster
try to kepe track of when and which node currently hosts an ip address
so that we avoid extra ip failovers between nodes
(This used to be ctdb commit cf778b5aaf6356401e3985acccc7df9e08ab6930)
