Re: n-way multi master and mirror mode

Brendan Kearney wrote:

On 12/04/2016 04:49 PM, Quanah Gibson-Mount wrote:

...

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.

Mirrormode - the concept - is irrelevant here. All of the official docs show the mirrormode setting being used in N-Way multimaster.

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.

That is what the Admin Guide already says.

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.

This is just due to sssd being very poorly written. It spews out a bunch of LDAP requests without waiting for replies. It then abandons N-1 of the requests as soon as it reads the first reply. And then it reissues the remaining requests, over and over. Instead it should just wait a little longer for all the replies, instead of abandoning and resubmitting the same requests and wasting redundant work.

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/hypervisor.bpk2.com@BPK2.COM" authzid="host/hypervisor.bpk2.com@BPK2.COM" 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