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OpenLDAP Quick Tips: Change loglevels on the fly!

OpenLDAPOpen SourceSuretec Hi All,

Here's the 15th tip in the "OpenLDAP Quick Tips" series:

"You want to change your OpenLDAP loglevel to get more information, but can't take your directory server offline":

If you've been following the OpenLDAP Quick Tips series, you would have already read Switch to the dynamic config backend (cn=config) and will now have a live slapd dynamic backend configured. If not, go back and read it over ;-)

Let's say you are running the stats (256) loglevel, but you want to know look at the sync loglevel or both. Making the change is much the same as with Check your indices. First we check our current level:

[ghenry@suretec ~]$ ldapsearch -x -H ldap[?]:// -b 'cn=config' -D 'cn=config' -s base -LLL -W olcLoglevel  Enter LDAP[?] Password:  dn: cn=config olcLogLevel: Stats

This shows that we are on the stats (256) level. We can either swap this to sync or add it to the current level not loosing the stats level. Let's add it with the following LDIF:

dn: cn=config  changetype: modify  add: olcLoglevel olcLoglevel: Sync

The results will look like:

ldapmodify -x -D 'cn=config' -W -f newloglevel.ldif

which will show in your logs as:

Dec  2 13:06:23 suretecsystems slapd[27824]: conn=13687 fd=46 ACCEPT from IP=XXX.XXX.XXX.XXX:46272 (IP=  Dec  2 13:06:23 suretecsystems slapd[27824]: conn=13687 op=0 BIND dn="cn=config" method=128  Dec  2 13:06:23 suretecsystems slapd[27824]: conn=13687 op=0 BIND dn="cn=config" mech=SIMPLE ssf=0  Dec  2 13:06:23 suretecsystems slapd[27824]: conn=13687 op=0 RESULT tag=97 err=0 text=  Dec  2 13:06:23 suretecsystems slapd[27824]: conn=13687 op=1 MOD dn="cn=config"  Dec  2 13:06:23 suretecsystems slapd[27824]: conn=13687 op=1 MOD attr=olcLoglevel  Dec  2 13:06:23 suretecsystems slapd[27824]: slap_queue_csn: queing 0x8b986aa2 20081202130623.645866Z&000000;000#000000  Dec  2 13:06:23 suretecsystems slapd[27824]: conn=13687 op=1 RESULT tag=103 err=0 text=  Dec  2 13:06:23 suretecsystems slapd[27824]: slap_graduate_commit_csn: removing 0xa39d730 20081202130623.645866Z&000000;000#000000  Dec  2 13:06:23 suretecsystems slapd[27824]: conn=13687 op=2 UNBIND  Dec  2 13:06:23 suretecsystems slapd[27824]: conn=13687 fd=46 close

To remove it just use a delete changetype.

It should now be obvious how to add and change settings via cn=config.



If you have an entry for our "OpenLDAP Quick Tips" series, why not e-mail your tip to us.

P.S. For direct access to this section, you can click OpenLDAP Quick Tips.


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