Comments on Setting Up An Active/Active Samba CTDB Cluster Using GFS & DRBD (CentOS 5.5)

Setting Up An Active/Active Samba CTDB Cluster Using GFS & DRBD (CentOS 5.5) This article explains how to set up an Active/Active Samba CTDB Cluster, using GFS and DRBD. Prepared by Rafael Marangoni, from BRLink Servidor Linux Team. We use two nodes, both are active nodes, and the requests are loadbalanced. To replicate data between the nodes we use DRBD. To active/active cluster, we must use a ClusterFS (in this case GFS), to make the two nodes to write on the DRBD resource at same time.

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By: pb
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WTF?! why did you disable SELINUX?? please read /etc/samba/smb.conf for info on how to make samba play nicely. NEVER disable SELINUX, doing so is like chmod 777, yes you do make it work but... While getting your head around contexts and such may I recommend SELINUX=permissive so you can at some point re-enable it to harden your server. If you tried to do a full system relabel now you will most likely get some MASSIVE issues.

getenforce (is the system enforcing or permissive?)
setenforce 0 (set SELINUX on the fly to permissive)
setenforce 1 (set SELINUX on the fly to enforcing)
# the system will default back to what ever is defined in /etc/selinux/config upon reboot. this will NOT work if you have at any point disabled SELINUX

From Fedora's smb.conf:
chcon -R -t samba_share_t /path/to/share

all newly created files will automatically inherit the context of their parent.

you will not find the samba_share_t context listed anywhere other than smb.conf as there is no default system location for a samba share, unlike the default httpd doc root. If you were running an httpd server you can find out the needed contexts by simply:
semanage fcontext -l|grep httpd


:D