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--- cluster:139 [2015/04/08 17:42]
hmeij created
+++ cluster:139 [2015/04/10 17:56]
hmeij [Warewulf LBL]
@@ Line 4: / Line 4: @@
 ===== Warewulf LBL =====
-  * [[http://warewulf.lbl.gov/trac]] Warewulf is a scalable systems management suite originally developed to manage large high-performance Linux clusters.  My Project Kusu replacement since IBM bought up Platform LSF and dished the hpccommunnity.org web site, grrrh.
+  * [[http://warewulf.lbl.gov/trac]] Warewulf is a scalable systems management suite originally developed to manage large high-performance Linux clusters.  My Project Kusu replacement since IBM bought up Platform LSF and dished the hpccommunnity.org web site, grrrh. (old info at https://dokuwiki.wesleyan.edu/doku.php?id=cluster:88)
+Get RPMs and install.
+<code>
+[root@petaltail ~]# wget -O /etc/yum.repos.d/warewulf-rhel6.repo http://warewulf.lbl.gov/downloads/repo/warewulf-rhel6.repo
+--2015-04-07 08:45:56--  http://warewulf.lbl.gov/downloads/repo/warewulf-rhel6.repo
+Resolving warewulf.lbl.gov... 128.3.7.27
+Connecting to warewulf.lbl.gov|128.3.7.27|:80... connected.
+HTTP request sent, awaiting response... 200 OK
+Length: 126 [text/plain]
+Saving to: â/etc/yum.repos.d/warewulf-rhel6.repoâ
+%[======================================================================================>] 126         --.-K/s   in 0s
+-04-07 08:45:56 (22.9 MB/s) - â/etc/yum.repos.d/warewulf-rhel6.repoâsaved [126/126]
+[root@petaltail ~]# yum install warewulf-common warewulf-cluster warewulf-provision
+Installed:
+  warewulf-cluster.x86_64 0:3.6-1.el6          warewulf-common.noarch 0:3.6-1.el6        warewulf-icr.x86_64 0:3.6-1.el6
+  warewulf-provision.x86_64 0:3.6-1.el6
+Dependency Installed:
+  dhcp.x86_64 12:4.1.1-43.P1.el6.centos.1    tftp-server.x86_64 0:0.49-7.el6    warewulf-provision-server.x86_64 0:3.6-1.el6
+  warewulf-vnfs.noarch 0:3.6-1.el6
+Complete!
+</code>
+Get and install MySQL and set mysql user root's password.
+<code>
+[root@petaltail warewulf]# vi /etc/warewulf/database-root.conf
+[root@petaltail warewulf]# service mysqld status
+mysql> set password for 'root'@'localhost' = PASSWORD('some_string');
+Query OK, 0 rows affected (0.00 sec)
+[root@petaltail warewulf]# chmod o-r /etc/warewulf/database-root.conf
+</code>
+In the provision config file I turned dynamic_hosts, hostfile and localdomain off (I'll manage those manually) and my private network is run over eth0 (192.168.0.0/255.255.0.0).
+<code>
+[root@petaltail warewulf]# vi /etc/warewulf/provision.conf
+[root@petaltail warewulf]# vi /etc/warewulf/provision.conf
+</code>
+Next comes a piece of mystery. When executing  ''wwinit ALL'' I ran into a lether, no less, error. After much digging found the answer here and surprisingly found little in the documentation on this.
+  * Lethal error thrown by module: /usr/libexec/warewulf/wwinit/91-vnfs.init
+  * answer is here https://groups.google.com/a/lbl.gov/forum/#!topic/warewulf/5OhfZCf_eqE
+So we start by making the chroot directories, first we'll build a generic centos-6. Then we initialize the warewulf environment.
+<code>
+[root@petaltail ~]# wwmkchroot centos-6 /var/chroots/centos-6
+[root@petaltail ~]# CHROOTDIR=/var/chroots/centos-6  wwinit ALL
+database:     Checking /etc/rc.d/init.d/mysqld is installed                  OK
+database:     Confirming mysqld is configured to start at boot:
+database:      + chkconfig mysqld on                                         OK
+database:     Checking to see if MySQL needs to be started:
+database:      + service mysqld start                                        OK
+wwsh:         Confirming that wwsh accepts some basic commands
+wwsh:          + wwsh quit                                                   OK
+wwsh:          + wwsh help                                                   OK
+wwsh:          + wwsh node new testnode0000                                  OK
+wwsh:          + wwsh node list                                              OK
+wwsh:          + wwsh node delete testnode0000                               OK
+domain:       Setting default node domain to: "cluster"                      OK
+authfiles:    Checking to see if /etc/passwd is in the WW Datastore          OK
+authfiles:    Checking if /etc/passwd is part of default node configuration
+authfiles:    Checking to see if /etc/group is in the WW Datastore           OK
+authfiles:    Checking if /etc/group is part of default node configuration
+nfsd:         Setting domain "cluster" for IDMAPD/NFSv4                      OK
+nfsd:          + chkconfig nfs on                                            OK
+nfsd:          + service nfs restart                                         OK
+nfsd:          + exportfs -a                                                 OK
+ntpd:         Configured NTP services
+ntpd:          + chkconfig ntpd on                                           OK
+ntpd:          + service ntpd restart                                        OK
+ssh_keys:     Checking ssh keys for root                                     OK
+ssh_keys:     Checking root's ssh config                                     OK
+ssh_keys:     Checking for default RSA1 host key for nodes                   OK
+ssh_keys:     Checking for default RSA host key for nodes                    OK
+ssh_keys:     Checking for default DSA host key for nodes                    OK
+tftp:          + /sbin/chkconfig xinetd on                                   OK
+tftp:          + /sbin/chkconfig tftp on                                     OK
+tftp:          + /sbin/service xinetd restart                                OK
+bootstrap:    Creating bootstrap for 2.6.32-504.8.1.el6.x86_64:
+bootstrap:     + wwbootstrap 2.6.32-504.8.1.el6.x86_64                       OK
+vnfs:         Building the VNFS image and importing into Warewulf:
+vnfs:          + wwvnfs -y --hybridpath=/var/chroots/centos-6 --chroot /var/ OK
+</code>
+Next restart MySQL, httpd and xinetd. Open your firewall on the private network.
+  * edit /etc/sysconfig/iptables and restart iptables
+<code>
+# local allow
+-A INPUT -i eth0 -d 192.168.0.0/16 -p tcp --dport 0:65535 -j ACCEPT
+-A INPUT -i eth0 -d 192.168.0.0/16 -p udp --dport 0:65535 -j ACCEPT
+</code>
+Next restart some warewulf services. I had to edit the /etc/warewulf/dhcpd-template.conf several times and hardcoded the values in for network, netmask and ipaddr becuase I realized this server is my virtualization KVM host and eth0 is bridged to br0 and warewulf is looking at the first ethernet and picks up eth1.
+<code>
+[root@petaltail ~]# wwsh dhcp update
+Rebuilding the DHCP configuration
+Done.
+[root@petaltail ~]# wwsh pxe update
+No nodes found
+[root@petaltail ~]# wwsh
+Warewulf> node new b51 --netdev=eth0 --hwaddr=00:00:00:00:00:00 --ipaddr=192.168.1.5 --groups=wwnodes
+Warewulf> provision set --lookup groups wwnodes --vnfs=centos-6 --bootstrap=2.6.32-504.8.1.el6.x86_64
+Are you sure you want to make the following changes to 1 node(s):
+     SET: BOOTSTRAP            = 2.6.32-504.8.1.el6.x86_64
+     SET: VNFS                 = centos-6
+Yes/No> y
+Warewulf> quit
+</code>
+Booting the node we observe the eth0 MAC address being picked up by DHCPd followed by the tftpboot process.  The node boots, et voila, CentOS 6.6 //stateless// compute node.
+Useful links
+  * [[http://www.admin-magazine.com/HPC/Articles/Warewulf-Cluster-Manager-Master-and-Compute-Nodes]]
+  * [[http://www.admin-magazine.com/HPC/Articles/warewulf_cluster_manager_completing_the_environment]]
+  * http://warewulf.lbl.gov/trac/wiki/Documentation
 \\
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