Re: slapd-meta Example Config ?

["Pierangelo Masarati" <ando@sys-net.it>]

> "ldap://master/dc=entite3,dc=meta,dc=fr","ldap://slave/dc=entite3,dc=meta,dc=fr";
>
> isn't accepted :-(
>
> One would say that I create one couple uri/suffixmassage for the master
> and an other for the slave, uri
> "ldap://master/dc=entite3,dc=meta,dc=fr";
> suffixmassage "dc=entite3,dc=meta,dc=fr" "dc=entite3,dc=fr"
> uri           "ldap://slave/dc=entite3,dc=meta,dc=fr";
> suffixmassage "dc=entite3,dc=meta,dc=fr" "dc=entite3,dc=fr"
>
> but if both are running I'll get search result doubled !.
>
> Is it possible to use efficientlty replicas with meta ?

do you mean to use replicas for redundancy or for load distribution,
i.e. to have a clean failover in case of server failure or to
distribute load among servers? in the latter case you better
do some round-robin ot DNS level, in the former I don't think there's
any mechanism to list multiple server like in ldap_open()/ldap_init().
back-meta and back-ldap use ldap_initialize, which requires one URI
as input.  A redundancy check should be implemented at the API level,
in my opinion, so that other software can take advantage of it.

You may hack init_one_conn() in servers/slapd/back-meta/conn.c
to try a list of URIs until there's no failure, and meta_back_db_config()
in servers/slapd/back-meta/config.c to accept multiple URIs (maybe on the
same line); of course you need to provide space to host them in the
struct metatarget.

In case, a patch would be welcome.

P.M.

-- 
Pierangelo Masarati
mailto:pierangelo.masarati@sys-net.it