Re: [CentOS] Autofs cannot bind LDAP server
On Fri, Nov 27, 2009 at 12:30 PM, Eric B. ebe...@hotmail.com wrote: My problem, however, is that once my ldap server is back up, autofs never seems to retry to connect to it, so all my /home mounts fail. Basically, it means I have to make sure that my LDAP server is never down while another server is rebooting. I figure there must be something in the configuration file that would allow me to tweak this to indicate to autofs to recheck the ldap server periodically to see if it has come back up, but can't seem to find anything. Once the server is back up, does restarting the autofs daemon fix the behaviour? Also, try setting the logging to debug.. Might give you a better idea of why it's not reconnecting. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Autofs cannot bind LDAP server
Kwan Lowe wrote, On 12/02/2009 07:07 AM: On Fri, Nov 27, 2009 at 12:30 PM, Eric B. ebe...@hotmail.com wrote: My problem, however, is that once my ldap server is back up, autofs never seems to retry to connect to it, so all my /home mounts fail. Basically, it means I have to make sure that my LDAP server is never down while another server is rebooting. I figure there must be something in the configuration file that would allow me to tweak this to indicate to autofs to recheck the ldap server periodically to see if it has come back up, but can't seem to find anything. Once the server is back up, does restarting the autofs daemon fix the behaviour? Also, try setting the logging to debug.. Might give you a better idea of why it's not reconnecting. Perhaps the following links from an autofs list thread will point to something for Eric: subject: [autofs] ldap and reloading http://linux.kernel.org/pipermail/autofs/2009-June/005775.html http://linux.kernel.org/pipermail/autofs/2009-June/005779.html BTW the 'how to' debug Autofs is at: http://people.redhat.com/jmoyer/ -- Todd Denniston Crane Division, Naval Surface Warfare Center (NSWC Crane) Harnessing the Power of Technology for the Warfighter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Autofs cannot bind LDAP server
Kwan Lowe kwan.l...@gmail.com wrote in message news:b7e478370912020407p35def217td1bcf579d7bb8...@mail.gmail.com... On Fri, Nov 27, 2009 at 12:30 PM, Eric B. ebe...@hotmail.com wrote: My problem, however, is that once my ldap server is back up, autofs never seems to retry to connect to it, so all my /home mounts fail. Basically, it means I have to make sure that my LDAP server is never down while another server is rebooting. I figure there must be something in the configuration file that would allow me to tweak this to indicate to autofs to recheck the ldap server periodically to see if it has come back up, but can't seem to find anything. Once the server is back up, does restarting the autofs daemon fix the behaviour? Yes. Restarting autofs daemon causes it to reconnect to the ldap server, and all automounts work properly at that point. Also, try setting the logging to debug.. Might give you a better idea of why it's not reconnecting. I tried, but I got not additional useful information out of the automounter. Basically, it says that it failed to connect to ldap server, and never retries. But nothing particularly more useful (to me at least) there. Any ideas of lists or groups that I can try otherwise? I've tried posting to the kernel.autofs mailing list, but for some reason my posts never make it on. I even tried mailing the list admins but got no response back from them either. Thanks, Eric ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Autofs cannot bind LDAP server
Alan McKay alan.mc...@gmail.com wrote in message news:844129e80912011526o16aa6aen206a1cf7676a5...@mail.gmail.com... I'm using Autofs and LDAP for mounting my home directories via nfs. In general, everything seems to work fine. However, I have one small problem. If I reboot my server using autofs while my LDAP server is down, I get the following error message in my logs: I can't help you - but can you help me by pointing me to the docs you used to get this far? Holy cow. It wasn't easy... I had to do a lot of digging around to find the necessary stuff, and unfortunately, don't have all the links any more. I did a lot of searching online using LDAP and autofs as query strings. Some of the links I found were the following that helped me understand. Mind you, none were howto recepies as such. http://www.linuxtopia.org/online_books/rhel5/rhel5_administration/rhel5_s1-nfs-client-config-autofs.html http://www.openldap.org/faq/data/cache/599.html In a nutshell (if memory serves properly), you needed to do the following (this is all assuming you already have a functional LDAP server up and running and properly configured in your nsswitch.conf files and your ldap.conf files, etc). 1) Add the autofs schema to your ldap server (add the following line to the slapd.conf file: include /etc/openldap/schema/redhat/autofs.schema). I don't remember if I already had the autofs.schema file or not, or if I had to search for it. 2) Modify your /etc/sysconfig/autofs to uncomment: # MAP_OBJECT_CLASS=automountMap ENTRY_OBJECT_CLASS=automount MAP_ATTRIBUTE=ou ENTRY_ATTRIBUTE=cn VALUE_ATTRIBUTE=automountInformation 3) Create an ldif file and import into your LDAP server to show the following. Note, that my NFS server has the home directories located at /var/nfs/home/user name. Your mapping may be different. dn: ou=auto.home,dc=domain,dc=com objectClass: top objectClass: automountMap ou: auto.home dn: cn=/,ou=auto.home,dc=domain,dc=com objectClass: automount cn: / automountInformation: -rsize=8192,wsize=8192,intr nfs_server.domain.com:/var/nfs/home/ dn: ou=auto.master,dc=domain,dc=com objectClass: top objectClass: automountMap ou: auto.master dn: cn=/home,ou=auto.master,dc=domain,dc=com objectClass: automount cn: /home automountInformation: ldap:ldap_server.domain.com:ou=auto.home,dc=domain,dc=com 4) Cross your fingers and restart your ldap server and your autofs daemon and hope it works. I got this working on CentOS 5.3. Hope this helps. I remember having to do a lot of digging around, a lot of searching and a lot of trial and error to get it working. But hopefully the above points should at least set you off in the correct path. Keep in mind I am by far no expert - I just poked around until I got it working, and once I did, stepped away from it. Good luck. Eric ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Autofs cannot bind LDAP server
Todd Denniston todd.dennis...@tsb.cranrdte.navy.mil wrote in message news:4b168426.9030...@tsb.cranrdte.navy.mil... Kwan Lowe wrote, On 12/02/2009 07:07 AM: On Fri, Nov 27, 2009 at 12:30 PM, Eric B. ebe...@hotmail.com wrote: My problem, however, is that once my ldap server is back up, autofs never seems to retry to connect to it, so all my /home mounts fail. Basically, it means I have to make sure that my LDAP server is never down while another server is rebooting. I figure there must be something in the configuration file that would allow me to tweak this to indicate to autofs to recheck the ldap server periodically to see if it has come back up, but can't seem to find anything. Once the server is back up, does restarting the autofs daemon fix the behaviour? Also, try setting the logging to debug.. Might give you a better idea of why it's not reconnecting. Perhaps the following links from an autofs list thread will point to something for Eric: subject: [autofs] ldap and reloading http://linux.kernel.org/pipermail/autofs/2009-June/005775.html http://linux.kernel.org/pipermail/autofs/2009-June/005779.html BTW the 'how to' debug Autofs is at: http://people.redhat.com/jmoyer/ Thanks for the links. Not exactly what I need, but maybe an alley to help me down the path. In the meantime, if anyone else has any suggestions what I can do, would love to hear about it. Thanks, Eric ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Autofs cannot bind LDAP server
2009/12/2 Eric B. ebe...@hotmail.com: In the meantime, if anyone else has any suggestions what I can do, would love to hear about it. Do you just have the one LDAP server? I would probably set up a slave and add it to your client's ldap configuration. Ben ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Autofs cannot bind LDAP server
Benjamin Donnachie benja...@py-soft.co.uk wrote in message news:732076a80912020835u4cc87abwb3633c40320e8...@mail.gmail.com... 2009/12/2 Eric B. ebe...@hotmail.com: In the meantime, if anyone else has any suggestions what can do, would love to hear about it. Do you just have the one LDAP server? I would probably set up a slave and add it to your client's ldap configuration. Yes - thanks. Actually, my problem has to do with sequencing. I'm running most of my servers as Virtual Machines, so if/when a Virtual Host reboots, all the vms on it reboot as well. If any of the other vms happen to boot prior to the ldap servers, I run into this problem. So I'm trying to figure out if there is a way around this, apart from making sure never to boot both the ldaps at the same time. Thanks, Eric ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Autofs cannot bind LDAP server
I'm using Autofs and LDAP for mounting my home directories via nfs. In general, everything seems to work fine. However, I have one small problem. If I reboot my server using autofs while my LDAP server is down, I get the following error message in my logs: I can't help you - but can you help me by pointing me to the docs you used to get this far? thanks, -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of In Defense of Food ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
