<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:1468402442;
mso-list-type:hybrid;
mso-list-template-ids:-677184376 -1807290822 67698691 67698693 67698689 67698691 67698693 67698689 67698691 67698693;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:-;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Calibri",sans-serif;
mso-fareast-font-family:Calibri;}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Symbol;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Symbol;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l1
{mso-list-id:2023240703;
mso-list-type:hybrid;
mso-list-template-ids:-1260060976 67698703 67698713 67698715 67698703 67698713 67698715 67698703 67698713 67698715;}
@list l1:level1
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level2
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level3
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l1:level4
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level5
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level6
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l1:level7
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level8
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l1:level9
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We have a PCS cluster running on 2 CentOS 7 nodes, exposing 2 NFSv3 volumes which are then mounted to multiple servers (around 8).<o:p></o:p></p><p class=MsoNormal>We want to have 2 more sets of additional shared NFS volumes, for a total of 6.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have successfully configured 3 resource groups, with each group having the following resources:<o:p></o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>1x ocf_heartbeat_IPaddr2 resource for the Virtual IP that exposes the NFS share assigned to its own NIC.<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>3x ocf_heartbeat_Filesystem resources (1 is for the nfs_shared_infodir and the other 2 are the ones exposed via the NFS server)<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>1x ocf_heartbeat_nfsserver resource that uses the aforementioned nfs_shared_infodir.<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>2x ocf_heartbeat_exportfs resources that expose the other 2 filesystems as NFS shares.<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>1x ocf_heartbeat_nfsnotify resource that has the Virtual IP set as its own source_host.<o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>All 9 filesystem volumes are mounted via iSCSI to the PCS nodes in /dev/mapper/mpathX<o:p></o:p></p><p class=MsoNormal>So the structure is like so:<o:p></o:p></p><p class=MsoNormal>Resource group 1:<o:p></o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>/dev/mapper/mpatha – shared volume 1<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>/dev/mapper/mpathb – shared volume 2<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>/dev/mapper/mpathc – nfs_shared_infodir for resource group 1<o:p></o:p></li></ul><p class=MsoNormal>Resource group 2:<o:p></o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>/dev/mapper/mpathd – shared volume 3<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>/dev/mapper/mpathe – shared volume 4<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>/dev/mapper/mpathf – nfs_shared_infodir for resource group 2<o:p></o:p></li></ul><p class=MsoNormal>Resource group 3:<o:p></o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>/dev/mapper/mpathg – shared volume 5<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>/dev/mapper/mpathh – shared volume 6<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>/dev/mapper/mpathi – nfs_shared_infodir for resource group 3<o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My concern is that when I run a df command on the active node, the last ocf_heartbeat_nfsserver volume (/dev/mapper/mpathi) mounted to /var/lib/nfs. I understand that I cannot change this, but I can change the location of the rpc_pipefs folder.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have had this setup running with 2 resource groups in our development environment, and have not noticed any issues, but since we’re planning to move to production and add a 3<sup>rd</sup> resource group, I want to make sure that this setup will not cause any issues. I am by no means an expert on NFS, so some insight is appreciated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If this kind of setup is not supported or recommended, I have 2 alternate plans in mind:<o:p></o:p></p><ol style='margin-top:0in' start=1 type=1><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level1 lfo2'>Have all resources in the same resource group, in a setup that will look like this:<o:p></o:p></li><ol style='margin-top:0in' start=1 type=a><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level2 lfo2'>1x ocf_heartbeat_IPaddr2 resource for the Virtual IP that exposes the NFS share.<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level2 lfo2'>7x ocf_heartbeat_Filesystem resources (1 is for the nfs_shared_infodir and 6 exposed via the NFS server)<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level2 lfo2'>1x ocf_heartbeat_nfsserver resource that uses the aforementioned nfs_shared_infodir.<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level2 lfo2'>6x ocf_heartbeat_exportfs resources that expose the other 6 filesystems as NFS shares. Use the clientspec option to restrict to IPs and prevent unwanted mounts.<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level2 lfo2'>1x ocf_heartbeat_nfsnotify resource that has the Virtual IP set as its own source_host.<o:p></o:p></li></ol><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level1 lfo2'>Setup 2 more clusters to accommodate our needs<o:p></o:p></li></ol><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I really want to avoid #2, due to the fact that it will be overkill for our case.<o:p></o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Christoforos Christoforou<o:p></o:p></b></p><p class=MsoNormal><i>Senior Systems Administrator<o:p></o:p></i></p><p class=MsoNormal>Global Reach Internet Productions<o:p></o:p></p><p class=MsoNormal><u><span style='color:#177BBF'><a href="http://www.twitter.com/globalreach"><span style='color:#177BBF'>Twitter</span></a></span></u> | <u><span style='color:#177BBF'><a href="http://www.facebook.com/globalreach"><span style='color:#177BBF'>Facebook</span></a></span></u> | <u><span style='color:#177BBF'><a href="https://www.linkedin.com/company/global-reach-internet-productions"><span style='color:#177BBF'>LinkedIn</span></a></span></u><o:p></o:p></p><p class=MsoNormal>p (515) 996-0996 | <u><span style='color:#177BBF'><a href="http://www.globalreach.com/"><span style='color:#177BBF'>globalreach.com</span></a></span></u><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>