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This is the first stage of an experimental change to eventscripts.
Ronnie and I did a few hours of factorisation of 40.vsftpd and applied
many of the changes to 41.httpd. Other eventscripts were also
modified.
At this stage this is completely untested.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 364e70b763f0ccd7714d15723ad3ea4d7e2968a1)
use killtcp and kill both directions of the nfs connections.
we used to kill only one direction since the other direction was unkillble
but recent kernels allow us to kill both
(This used to be ctdb commit 8001ae580bcc28d45f6026b529d7ffc247cbba34)
This just sleeps for twice the value of EventScriptTimeout
in the monitor action. It is not run by default, but
can be activated by setting CTDB_RUN_TIMEOUT_MONITOR
in /etc/sysconfig/ctdb .
Michael
(This used to be ctdb commit 1a3ecdee85b82bb3234a92ae6bcdeb92238eb7ee)
It's much nicer for post-mortem debugging to have a body to examine.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(This used to be ctdb commit 058e21d96c3c02759833fd5ddfe7b43e6a5f5740)
this to handle the case where all links do have a physical layer, but where all slaves have been disabled using ifdown
(This used to be ctdb commit bf50709630df000583f2b0ef0edc177c01d60eaf)
Leave the node as UNHEALTHY this stops clients from accessing the node until
the reclock file can be accessed again
(This used to be ctdb commit f5e9f3007c10a937158bc8cdfabf33c984cf9c50)
this allows us to configure and enable nfs at runtime without having to restart ctdbd
(This used to be ctdb commit f6e39d35713475defaa08a623e194f3f2f8f7d53)
There are 2 problems with this code:
* The loop in ctdb_check_directories_probe() breaks on filenames
containing whitespace.
The fix to protect them is to pass "$@" to this function and have it
operate on "$@".
Note that there's still a problem with whitespace in filenames in
the 50.samba eventscript. To fix this ctdb_check_directories_probe
should read the filenames from stdin. Another time...
* The check for '%' in filenames in ctdb_check_directories_probe()
ends up involving several forks. On a modern machine this can cost
a couple of minutes when checking a large number of directories.
The fix is to use a case statement.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit eb1fecaef9aa5cb85dff7d4f7af8a9878deabed8)
Each recovery that involves IP reassignments results in a restart of
vsftpd in the "recovered" event. Currently, we can have several
recoveries in quick succession and the "monitor" event following each
can fail because vsftpd isn't ready yet. This results in cumulative
failures, so the node is marked unhealthy, even though vsftpd has
never had a proper opportunity to become ready.
This resets the fail count after each recovery.
While we're here, also move the delete of the restart flag file into
the body of the conditional.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 318abeb4b913a8d846e7eaf4cf5c2a67b61ce974)
test -z really needs its argument to be quoted. Simplified a status
test.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit fe26da7780545b1ecc0a7da5bc1cf8beaeea94cc)
Change the monitor event in 40.vsftpd so it only fails if there are 2
successive failures connecting to port 21. This reduces the
likelihood of unhealthy nodes due to vsftpd being restarted for
reconfiguration due to node failover or system reconfiguration.
New eventscript functions ctdb_counter_init, ctdb_counter_incr,
ctdb_counter_limit. These are used to count arbitrary things in
eventscripts, depending on the eventscript name and a tag that is
passed, and determine if a specified limit has been hit. They're good
for counting failures!
These functions are used in 40.vsftpd and also in 01.reclock - the
latter used to do the counting without these functions.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit cfe63636a163730ae9ad3554b78519b3c07d8896)
Remove the explicit vacuum/repack commands from the 00.ctdb eventscript
and implement this in the ctdb daemon.
Combine vacuuming and repacking into one
cheap read traverse to enumerate all candidate records
and one write traverse that both repacks the database and also deletes the record locally where we are lmaster and where the records have already been deleted remotely.
this code also adds initial autotuning heuristics for the vacuum intervals and how many records to delete in each iteration.
minor stylish changes made by ronnie s
(This used to be ctdb commit 95a3ee551241aa164967991fe5efe078e1714bde)
if the reclock file has been set, then this script will test that the
reclock file can actually be accessed.
if the file does not exist, or if the attempts to stat the file hangs,
the node will be marked unhealthy after the third failed monitoring event
and after the tenth failure, ctdb itself will shutdown.
(This used to be ctdb commit 2cb04747887674def299e574fccb827c1c3194e7)
This allows for controlling start of ctdbd with or without the option "--syslog"
from the sysconfig/ctdb file.
Michael
(This used to be ctdb commit 7bf9fff9139a4270496bddb97f9433bab87824bf)
dont log errors is trying to delete a nonexisting state file
this eliminates some annoying log entries in the ctdb log
(This used to be ctdb commit 7a95257a5ec19f232f661bc7f797051bf08ab776)
This does not modify any behaviour of the daemon itself other than showing this flag as ON in the ctdeb getcapabilities output
(This used to be ctdb commit fb337c151bd16ad5ad0c99431224451979d8c651)
