While trying to determine how syncrepl behaves in various error conditions, I encountered an unexpected behaviour in which the retry specification doesn't seem to work. A MASTER is set up to use push replication to a REPLICA as follows:

database ldap hidden on suffix "" rootdn "cn=slapd-ldap" uri ldap://REPLICA/ lastmod on restrict all sync_use_subentry true

acl-bind bindmethod=simple binddn="cn=Monitor" credentials=password

syncrepl rid=001 provider=ldapi://%2Fvar%2Frun%2Fldapi binddn="cn=Manager" bindmethod=simple credentials=passwd searchbase="" type=refreshAndPersist retry="5 5 60 +"

When I stop the REPLICA and add an entry on the MASTER, then the MASTER is retrying every 5s and claims that 4 (sometimes 3) retries are left:

Jul 22 13:12:52 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:12:57 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (3 retries left) Jul 22 13:13:02 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:07 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (3 retries left) Jul 22 13:13:12 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:17 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:22 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:28 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:33 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:38 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:43 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:48 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:53 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left) Jul 22 13:13:58 MASTER slapd[23778]: do_syncrepl: rid=001 rc 52 retrying (4 retries left)

When I start REPLICA again, syncrepl succeeds.

Do I have to set some other option such that the retry specification is actually used? That is, try every 5s for 5 times, then try every 60s. Or is the retry logic dependent on the error syncrepl encounters?

The full log for one failed retry is:

conn=1004 op=0 BIND dn="cn=manager" method=128 conn=1004 op=0 BIND dn="cn=manager" mech=SIMPLE ssf=0 conn=1004 op=0 RESULT tag=97 err=0 text= conn=1004 op=1 SRCH base="" scope=2 deref=0 filter="(objectClass=*)" conn=1004 op=1 SRCH attr=* + srs csn 20110722201233.471069Z#000000#001#000000 log csn 20110722201233.471069Z#000000#001#000000 cmp 0, too old log csn 20110722201252.820971Z#000000#001#000000 Entry uid=user68,ou=People,dc=example,dc=com CSN 20110722201233.471069Z#000000#001#000000 older or equal to ctx 20110722201233.471069Z#000000#001#000000 syncprov_search_response: cookie=rid=001,sid=001,csn=20110722201252.820971Z#000000#001#000000 syncrepl_entry: rid=001 LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_ADD) syncrepl_entry: rid=001 inserted UUID 95b838a2-4b55-4bcc-8b00-be329b138db0 conn=1004 fd=15 ACCEPT from PATH=/var/run/ldapi (PATH=/var/run/ldapi) syncrepl_entry: rid=001 be_search (52) syncrepl_entry: rid=001 uid=user69,ou=People,dc=example,dc=com null_callback : error code 0x34 syncrepl_entry: rid=001 be_add uid=user69,ou=People,dc=example,dc=com (52) syncrepl_entry: rid=001 be_add uid=user69,ou=People,dc=example,dc=com failed (52) do_syncrepl: rid=001 rc 52 retrying (4 retries left) conn=1004 op=2 UNBIND conn=1004 fd=15 closed connection_read(15): no connection! connection_read(15): no connection!