On 12/04/2016 04:49 PM, Quanah Gibson-Mount wrote:
--On Sunday, December 04, 2016 3:42 PM -0500 Brendan Kearney
<[email protected]> wrote:
my line of thinking was that if mirror mode was not appropriate for
multi
master replication, then i would remove the setting and eliminate the
item from my list of potential contributing factors. if mirror mode is
not needed, there are potential efforts and cpu cycles being spent on
doing work that is unnecessary or even detrimental to the performance of
slapd. i am looking make sure mirror mode is safe to remove from my
configs, so i can test the theory.
Hi Brendan,
Again, Mirror Mode is a concept, not a setting. The setting you refer
to, is, as I previously noted, misnamed. Either your servers are
configured to do multimaster replication, or they aren't.
The only time /any/ type of replication, whether it is multimaster or
provider/consumer, is really going to have an impact is if you have a
significant amount of sustained writes happening. So far, it sounds
like your traffic is almost entirely reads.
ReceivedAt SysLogtag Message
2016-11-15 20:35:05 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:05 slapd[1514]: connection_input: conn=6836
deferring operation: pending operations
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
2016-11-15 20:35:11 slapd[1514]: connection_input: conn=6836
deferring operation: too many executing
Yes, you'd need stats logging, and it appears that all of those were
only deferred for fractions of a second, which is why you see multiple
messages per second. So there's not really any indication here of a
problem that I can see.
i am running OpenLDAP: slapd 2.4.44 on fedora 24 using lmdb.
listener threads are the default of 1, and the value is not set.
I was asking about "threads/olcThreads", not the listener threads
value. That default is 16.
Regards,
Quanah
--
Quanah Gibson-Mount
Product Architect
Symas Corporation
Packaged, certified, and supported LDAP solutions powered by OpenLDAP:
<http://www.symas.com>
yes, i seem to be in the trap about the mirror mode misnomer. though
ambiguous, your statements indicate that mirror mode the setting is
required for n-way multi master replication.
i agree most of my traffic is reads. i have 7 examples of connections
with deferred operations. they are all SRCH's (i.e. reads). I seem to
misrember the source of the deferred connections. bind-dyndb-ldap does
not show in my logs. sssd access is what 6 of 7 examples show. below
is one sample.
ReceivedAt FromHost SysLogTag Message
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 fd=29 ACCEPT
from IP=192.168.88.4:59233 (IP=192.168.88.1:389)
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=0 SRCH
base="" scope=0 deref=0 filter="(objectClass=*)"
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=0 SRCH
attr=* altServer namingContexts supportedControl supportedExtension
supportedFeatures supportedLDAPVersion supportedSASLMechanisms
domainControllerFunctionality defaultNamingContext lastUSN
highestCommittedUSN
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=0 SEARCH
RESULT tag=101 err=0 nentries=1 text=
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=1 BIND
dn="" method=163
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=1 RESULT
tag=97 err=14 text=SASL(0): successful result:
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=2 BIND
dn="" method=163
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=2 RESULT
tag=97 err=14 text=SASL(0): successful result:
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=3 BIND
dn="" method=163
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=3 BIND
authcid="host/[email protected]"
authzid="host/[email protected]"
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=3 BIND
dn="cn=hypervisor,ou=computers,dc=bpk2,dc=com" mech=GSSAPI sasl_ssf=56
ssf=56
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=3 RESULT
tag=97 err=0 text=
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=4 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=4 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=8 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=8 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=9 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=9 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=10 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=10 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=6 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=6 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=7 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=7 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=5 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=5 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:00 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:00 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:00 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:00 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:00 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:00 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=11 ABANDON
msg=5
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=12 ABANDON
msg=6
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=13 ABANDON
msg=7
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=14 ABANDON
msg=8
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=15 ABANDON
msg=9
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=16 ABANDON
msg=10
12/04/16 04:00 PM server1 slapd[5033]: conn=2434 op=17 ABANDON
msg=11
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=19 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=18 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=18 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=19 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=20 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=20 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=21 ABANDON
msg=19
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=22 ABANDON
msg=20
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=23 ABANDON
msg=21
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=24 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=24 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=26 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=26 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=27 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=27 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=25 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=25 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=28 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:03 PM server1 slapd[5033]: conn=2434 op=28 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:03 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:03 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:03 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:03 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:03 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:03 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:03 PM server1 slapd[5033]: connection_input:
conn=2434 deferring operation: too many executing
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=29 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=29 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=30 ABANDON
msg=25
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=31 ABANDON
msg=26
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=32 ABANDON
msg=27
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=33 ABANDON
msg=28
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=34 ABANDON
msg=29
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=35 ABANDON
msg=30
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=36 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=36 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:04 PM server1 slapd[5033]: conn=2434 op=37 ABANDON
msg=37
12/04/16 04:07 PM server1 slapd[5033]: conn=2434 op=38 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:07 PM server1 slapd[5033]: conn=2434 op=38 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:07 PM server1 slapd[5033]: conn=2434 op=39 ABANDON
msg=39
12/04/16 04:12 PM server1 slapd[5033]: conn=2434 op=40 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:12 PM server1 slapd[5033]: conn=2434 op=41 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:12 PM server1 slapd[5033]: conn=2434 op=41 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:12 PM server1 slapd[5033]: conn=2434 op=40 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:12 PM server1 slapd[5033]: conn=2434 op=42 SRCH
base="ou=SUDO Groups,ou=Roles,dc=bpk2,dc=com" scope=2 deref=0
filter="(&(objectClass=sudoRole)(modifyTimestamp>=20150104230653Z)(!(modifyTimestamp=20150104230653Z)))"
12/04/16 04:12 PM server1 slapd[5033]: conn=2434 op=42 SRCH
attr=objectClass cn sudoCommand sudoHost sudoUser sudoOption sudoRunAs
sudoRunAsUser sudoRunAsGroup sudoNotBefore sudoNotAfter sudoOrder
modifyTimestamp
12/04/16 04:12 PM server1 slapd[5033]: conn=2434 op=43 ABANDON
msg=41
12/04/16 04:12 PM server1 slapd[5033]: conn=2434 op=44 ABANDON
msg=42
12/04/16 04:12 PM server1 slapd[5033]: conn=2434 op=45 ABANDON
msg=43
12/04/16 04:15 PM server1 slapd[5033]: conn=2434 op=46 UNBIND
12/04/16 04:15 PM server1 slapd[5033]: conn=2434 fd=29 closed
