nesting automount maps in ldap

nesting automount maps in ldap

[Jimmy Dorff]

Hello,

I'm attempting to migrate an existing (and working) nis automount system 
to ldap. We have several layers of nested maps and I'm attempting to 
recreate that in LDAP.

# Automount master for "/foo"
dn: cn=/foo, ou=auto.master,dc=phy,dc=duke,dc=edu
objectClass: automount
cn: /foo
automountInformation: ldap ldapserver:ou=auto.phy,dc=phy,dc=duke,dc=edu

dn: ou=auto.phy, dc=phy,dc=duke,dc=edu
objectClass: top
objectClass: automountMap
ou: auto.phy

# mounting "/foo/web" works great!
dn: cn=web, ou=auto.phy, dc=phy,dc=duke,dc=edu
objectClass: automount
cn: web
automountInformation: -fstype=nfs nfsserver01:/srv/httpd

# here is my attempt at nesting another level
dn: cn=project, ou=auto.phy,dc=phy,dc=duke,dc=edu
objectClass: automount
cn: project
automountInformation: ldap ldapserver:ou=auto.project,dc=phy,dc=duke,dc=edu

# This fails. I get "automount: failed to mount /foo/project
dn: ou=auto.project, dc=phy,dc=duke,dc=edu
objectClass: top
objectClass: automountMap
ou: auto.project

# this never shows up (ghosting enabled)
dn: cn=linux, ou=auto.project, dc=phy,dc=duke,dc=edu
objectClass: automount
cn: linux
automountInformation: -fstype=nfs nfsserver02:/srv/linux

I can't see to find an example of nest ldap maps. I'm using 
autofs-5.0.5-31.el6 if that makes any difference.

Thanks!
Jimmy Dorff

Re: nesting automount maps in ldap

[Jimmy Dorff]

On 06/17/2011 10:40 AM, Jimmy Dorff wrote:
> # here is my attempt at nesting another level
> dn: cn=project, ou=auto.phy,dc=phy,dc=duke,dc=edu
> objectClass: automount
> cn: project
> automountInformation: ldap ldapserver:ou=auto.project,dc=phy,dc=duke,dc=edu

My problem was the lack of "-fstype=autofs".

This works:
dn: cn=project,ou=auto.phy,dc=phy,dc=duke,dc=edu
objectClass: automount
cn: project
automountInformation: -fstype=autofs ou=auto.project,dc=phy,dc=duke,dc=edu

I also think this is called "layering" rather than "nesting".. but I'm 
not sure.

Cheers,
Jimmy

Re: nesting automount maps in ldap

[Ian Kent]

On Fri, 2011-06-17 at 16:40 -0400, Jimmy Dorff wrote:
> On 06/17/2011 10:40 AM, Jimmy Dorff wrote:
> > # here is my attempt at nesting another level
> > dn: cn=project, ou=auto.phy,dc=phy,dc=duke,dc=edu
> > objectClass: automount
> > cn: project
> > automountInformation: ldap ldapserver:ou=auto.project,dc=phy,dc=duke,dc=edu
> 
> My problem was the lack of "-fstype=autofs".

Oh .. yeah, that may well be it, but that should have been needed in the
original map. Maybe a look at a debug log would be useful and that
should show pretty quickly if it is just the missing fstype option.

> 
> This works:
> dn: cn=project,ou=auto.phy,dc=phy,dc=duke,dc=edu
> objectClass: automount
> cn: project
> automountInformation: -fstype=autofs ou=auto.project,dc=phy,dc=duke,dc=edu
> 
> I also think this is called "layering" rather than "nesting".. but I'm 
> not sure.

Maybe, but the terminology I've always used for these is "submount", as
in a sub autofs mount.

Ian

Re: nesting automount maps in ldap

[Ian Kent]

On Fri, 2011-06-17 at 10:40 -0400, Jimmy Dorff wrote:
> Hello,
> 
> I'm attempting to migrate an existing (and working) nis automount system 
> to ldap. We have several layers of nested maps and I'm attempting to 
> recreate that in LDAP.
> 
> # Automount master for "/foo"
> dn: cn=/foo, ou=auto.master,dc=phy,dc=duke,dc=edu
> objectClass: automount
> cn: /foo
> automountInformation: ldap ldapserver:ou=auto.phy,dc=phy,dc=duke,dc=edu
> 
> dn: ou=auto.phy, dc=phy,dc=duke,dc=edu
> objectClass: top
> objectClass: automountMap
> ou: auto.phy
> 
> # mounting "/foo/web" works great!
> dn: cn=web, ou=auto.phy, dc=phy,dc=duke,dc=edu
> objectClass: automount
> cn: web
> automountInformation: -fstype=nfs nfsserver01:/srv/httpd
> 
> # here is my attempt at nesting another level
> dn: cn=project, ou=auto.phy,dc=phy,dc=duke,dc=edu
> objectClass: automount
> cn: project
> automountInformation: ldap ldapserver:ou=auto.project,dc=phy,dc=duke,dc=edu

I'm not sure about using this older syntax.
Even if it is correct and we find a bug with it I'd be inclined to
recommend using the newer syntax if possible.

That would be (IIRC):
automountInformation: ldap://ldapserver/ou=auto.project,dc=phy,dc=duke,dc=edu

> 
> # This fails. I get "automount: failed to mount /foo/project
> dn: ou=auto.project, dc=phy,dc=duke,dc=edu
> objectClass: top
> objectClass: automountMap
> ou: auto.project
> 
> # this never shows up (ghosting enabled)
> dn: cn=linux, ou=auto.project, dc=phy,dc=duke,dc=edu
> objectClass: automount
> cn: linux
> automountInformation: -fstype=nfs nfsserver02:/srv/linux
> 
> I can't see to find an example of nest ldap maps. I'm using 
> autofs-5.0.5-31.el6 if that makes any difference.

Log a RHEL bug (you probably should go via support actually) and include
a full debug log.

That is set LOGGING="debug" in /etc/sysconfig/autofs "and" ensure that
daemon.* output is being captured by syslog.

> 
> Thanks!
> Jimmy Dorff
> 
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