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Pass this "$@" to do common eventscript argument checking.
For regular use putting this in 00.ctdb would be enough. However, for
developer testing it can be useful to call this in other eventscripts.
For example, 10.interfaces and 13.per_ip_routing currently check these
by hand.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 36de7e7fd6dfeed61ef9977b8d5b568f90a9707b)
Some of the current auto-start/stop logic is broken, particularly for
Samba. Fixing it is non-trivial.
If $CTDB_SERVICE_AUTOSTARTSTOP is "yes" then auto-start/stop services
when told to newly manage or no longer manage them. This defaults to
"yes".
However, if using a canned configuration file that doesn't set
$CTDB_SERVICE_AUTOSTARTSTOP then this stops the auto-start-stop logic
from working. Therefore, this works around CQ S1026685 - on the
system in question another daemon controls service auto-start/stop and
CTDB just gets in the way.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit ef71b8290ae49117d7bcc7166598b77cb64cc8a0)
There are sites that have multiple entries for the same export. This
optimises the share check in this case.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 1ccdae79b64b236fc27f4653606429d73c9c3595)
and we have not yet received a reply to.
Applications may use this command to query if it is "safe" to stop the event system and sleep
or whether it should first wait for all activity to ctdb daemons to cease first.
(This used to be ctdb commit 8d89bfdfd1f55dfeb22890b8bb0f08f31d1fa91a)
No code change, this is for easier reading the sequence of what happens
Signed-off-by: Michael Adam <obnox@samba.org>
(This used to be ctdb commit 883b9b185dce03a6bf233fbf2cfabad9883519e5)
No code change, this is for better readability
Signed-off-by: Michael Adam <obnox@samba.org>
(This used to be ctdb commit e0f93459e05eef33024096654b4aaf1eb3c6d7c4)
We need that to have the "offsetof" macro, thus we don't need to redeclare it
in libctdb_private.h
Signed-off-by: Michael Adam <obnox@samba.org>
(This used to be ctdb commit 4bfdfdae4f8ab23f14bc6ab4c06b66c07714ec17)
New function ctdb_check_tcp_ports_ctdb(). This should be fast... and
is now the default checker. If it fails in an unexpected way we fall
back to the nmap and netstat checkers.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit a1e16a707ce204817531a61455000361f972080a)
Split the netstat-specific parts of ctdb_check_tcp_ports() into new
function ctdb_check_tcp_ports_netstat().
Implement new ctdb_check_tcp_ports_nmap() function that uses
"nmap -PS" to check if the desired ports are listening.
ctdb_check_ctdb_ports() now uses new configuration variable
CTDB_TCP_PORT_CHECKERS to decide which port checkers to try. Default
value is currently "nmap netstat". If nmap is not found then this
will fall back to netstat - if logging is at debug level this will
also fill the logs with message saying the nmap checker failed. This
indicates that either nmap should be installed or the default value of
CTDB_TCP_PORT_CHECKERS should be changed (in a configuration file) to
avoid trying to use nmap.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit d9651175b40b9454e7d4e98291955fcf1445085e)
Use the new debug function to conditionally print the netstat output.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 44c14aeeb11080980fe07c7396d06843a4870747)
Sometimes smbd and other services can take a while to start,
especially when there is a lot of activity after ctdbd has just
started. The TCP port check can then pollute the logs with lots of
"ERROR" messages and possibly extra debug.
This creates a flag file when a service is started (but not restarted)
and this flag is removed the first time that TCP port checks succeed
for that service. When a port check fails and the flag file still
exists, a less extreme "INFO" message is printed rather than the usual
"ERROR" message. This means that until the node actually becomes
healthy we see more friendly messages.
The subtext is that we're hearing false positive reports "recreates"
of CQ S1024874 (samba stopped responding on port 445) quite often when
ctdbd is started. This reduces the chances of people reporting such
false recreates...
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 571865eb6ef847857129d0b1e2ba5fa7254bfe8c)
ctdb_check_tcp_ports() runs "netstat -a -t -n" in a loop for each
port. There are 2 problems with this:
* Netstat is run on each loop iteration when it need only be run once.
* The -a option is used to list all connections but the function only
cares about the listening ports. There may be many thousands of
non-listening ports to grep through.
This changes ctdb_check_tcp_ports() to run netstat with the -l option
instead of the -a option. It also only runs netstat once before the
main loop.
When a port is found to not be listening the output of the netstat
command is now dumped to help with debugging.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 830355a8b18c53cfcc3ad1e3009bbb1a7a681fa0)
The debug function passes its arguments to echo if
$CTDB_CURRENT_DEBUGLEVEL is >= 4 (i.e. DEBUG). If no args are given
then use stdin - this allows the function to be used with here
documents.
To ensure $CTDB_CURRENT_DEBUGLEVEL is set,
ctdb_set_current_debuglevel() is called near the end of the functions
file.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 6143483d9f87322578c00f12081e381f425226ca)
that tries to bind to the specified port on INADDR_ANY.
This can be used for testing if a service is listening to that port or not.
Errors are printed to stdout and the returned status code is either 0 : if we managed to bind to the port (in which case the service is NOT listening on that bort) or the value of errno that stopped us from binding to a port.
errno for EADDRINUSE is 98 so a script using this command should check the status code against the value 98.
If this command returns 98 it means the service is listening to the specified port.
(This used to be ctdb commit 04cbb490c5a075080923fde58af7082572c55c43)
This function ensures that CTDB_CURRENT_DEBUGLEVEL is set. It works
like this:
1. If it is already set then do nothing, since it might have been set
some other way.
The recommended "other way" would be to add a file in rc.local.d/.
2. If it is not set then set it by sourcing
/var/ctdb/eventscript_debuglevel.
3. If this file does not exist then create it using output from "ctdb
getdebug".
If the optional 1st argument is set to "create" then don't source an
existing file but create a new one instead - this is useful for
creating the file just once in each event run in, say, 00.ctdb.
If there's a problem getting the debug level from ctdb then it is
silently set to 0 - no use spamming logs if our debug code is
broken...
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 93910921c8a25f2b029733cd938069ff7c7bdab7)
See the comment in the code for details.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 8ee9856996a8ec738e9d3ea7f1561605da526b8c)
This potentially masks errors and was basically included by accident.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit e7e4a1b4f31118027fd13a6223192f9957cf2e74)
This is needed due to bd39b91ad12fd05271a7fced0e6f9d8c4eba92e6.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 92f8e31f6995836b1668639a4dac2862efee269a)
This matches the new "LCP2PublicIPs" tunable.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit 0680437bf5f02aeaed6387370e58bbdba2c04f28)
The startup event intends to mark interfaces up. However, it doesn't
actually do that because $INTERFACES is empty.
This uses the function get_all_interfaces() to list the
interfaces... and then mark them up.
Signed-off-by: Martin Schwenke <martin@meltin.net>
(This used to be ctdb commit fc62bf0975c6059ee467285565d0dc3b4daaf238)
