1.5.2 Shadow Master HostsThese hosts back up the functionality of |sge_qmaster| in case the master host or the master daemon fails. To be a shadow master host, a machine must have the following characteristics:
* It must run |sge_shadowd|. * It must share |sge_qmaster| status, job information, and queue configuration information that is logged to disk. In particular, the shadow master hosts need read/write root or administration user access to the |sge_qmaster| spool directory and to the |$SGE_ROOT/$SGE_CELL/common directory|. * The |$SGE_ROOT/$SGE_CELL/common/shadow_masters| file must contain a line defining the host as a shadow master host. Note:If no cell name is specified during installation, the value of |$SGE_CELL| is default.
The shadow master host facility is activated for a host as soon as these conditions are met. You do not need to restart the Grid Engine system daemons to make a host into a shadow master host.
Note: Windows hosts cannot act as shadow master hosts.For more information, see How to Install Shadow Master Host <http://docs.oracle.com/cd/E24901_01/doc.62/e21973/chapter2.htm#BGBEAGGH>.
On 5/29/2012 11:22 AM, Hung-Sheng Tsao (LaoTsao) Ph. D. wrote:
please donot change any script!!if you follow the steps the inst_sge -sm did ask you to auto start the shadow qmaster?it will put the script in place, otherwise somethings is wrong!! so questions 1)are you use the classic or BDB? 2)can shadow mqster access the qmaster spool directory? 3)shadow master has all requirement: a)uid b)access the CELL Directory etc regards On 5/29/2012 11:15 AM, Alan McKay wrote:On Tue, May 29, 2012 at 11:06 AM, Alan McKay <[email protected] <mailto:[email protected]>> wrote:It is not testing the shadow that I am worried about - it is what will start the shadow if the machine reboots? I currently do not see how that is going to work since nothing got put in /etc/init.d to start it.Also when I put it in there manually it still does not start unless I provide the -shadowd option - which suggests to me I do need to make some code changes to sgemaster in /etc/init.d :[root@solexa5 ~]# /etc/init.d/sgemaster start sge_qmaster didn't start! This is not a qmaster host! Please, check your act_qmaster file! [root@solexa5 ~]# /etc/init.d/sgemaster start -shadowd starting sge_shadowd [root@solexa5 ~]# !ps ps -ef | grep -i sgesgeadmin 18561 1 0 10:08 ? 00:00:03 /gridware/sge/bin/lx24-amd64/sge_execd sgeadmin 25565 1 0 11:06 ? 00:00:00 /gridware/sge/bin/lx24-amd64/sge_shadowdroot 26055 25199 0 11:13 pts/1 00:00:00 grep -i sge [root@solexa5 ~]# -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food" _______________________________________________ users mailing list [email protected] https://gridengine.org/mailman/listinfo/users
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