• How do I set up cloudbursting without OpenVPN?

    This article is being updated. Please be aware the content herein, not limited to version numbers and slight syntax changes, may not match the output from the most recent versions of Bright. This notation will be removed when the content has been updated. This article covers Bright Versions from before v7.3. For…

  • How can I integrate Bright OpenStack 7.1 Keystone with LDAP/AD?

    This article is being updated. Please be aware the content herein, not limited to version numbers and slight syntax changes, may not match the output from the most recent versions of Bright. This notation will be removed when the content has been updated. Here it is assumed that OpenStack was set up…

  • How can I change the password policy of LDAP?

    This article is being updated. Please be aware the content herein, not limited to version numbers and slight syntax changes, may not match the output from the most recent versions of Bright. This notation will be removed when the content has been updated. passwd-hash configures one or more hashes to be used…

  • How do I trigger a script when a node comes up?

    Is it possible to setup a trigger event (run a script) upon node becoming UP and available? Yes, this is possible. You can define a custom action which will run the custom-script and assign it to the pass action of the “DeviceIsUP” health check: # cmsh% monitoring actions% add custom-action%…

  • Any suggestions for tuning NFS on my cluster?

    This article is being updated. Please be aware the content herein, not limited to version numbers and slight syntax changes, may not match the output from the most recent versions of Bright. This notation will be removed when the content has been updated. Do you have customers tuned their network stack?  I’m…

  • Why is the kipmi0 process consuming so much CPU time?

    This is known to occur with some BMC controllers.It can occur for several reasons including the following: kipmi0 is a kernel helper thread involved in handling IPMI interfaces.Within IPMI, there are several standard classes of interfaces. Some ofthese classes, like KCS (Keyboard Control Style) and SMIC (SystemManagement Interface Chip) do…

  • How do I add password protection to GRUB?

    First you will need to generate a strong password as follows: [root@kerndev ~]# /sbin/grub-md5-cryptPassword:Retype password:$1$BaV5k1$02kE6BCxzGRyByx.RWHEd1[root@kerndev ~]# For the headnode: Edit /etc/grub.conf password -md5 <hash> below the timeout line: [root@kerndev ~]# cat /etc/grub.confdefault 0timeout 8 password -md5 $1$BaV5k1$02kE6BCxzGRyByx.RWHEd1 … For the nodes: You will need to perform the change above in /cm/images/<software image>/etc/grub.conf as…

  • I need to optimize the PCI Express performance for my QDR/FDR IB HCA?

    The MaxReadRequest feature is used to ensure a fairer bandwidth allocation of PCI Express. It specifies the largest read request any PCI Express device can generate. To reduce the way the bus is hogged by large reads one reduces the MaxReadRequest size.  The MaxReadRequest size is set too low and…

  • How do I enable cloudbursting for Amazon eu-central-1 region ?

    This article describes how to overcome some problems with using this region, that stem from having an old python-boto package which cannot handle this newer region. Support for eu-central-1 has been added to the boto library with python-boto version 2.34.0. Unfortunately package repositories for operating systems like RHEL 7.0 (Red…