{"id":117,"date":"2009-02-17T06:36:00","date_gmt":"2009-02-17T13:36:00","guid":{"rendered":"http:\/\/www.jasemccarty.com\/blog\/2009\/02\/opscheck-from-tripwire.html"},"modified":"2009-02-17T06:36:00","modified_gmt":"2009-02-17T13:36:00","slug":"opscheck-from-tripwire","status":"publish","type":"post","link":"https:\/\/www.jasemccarty.com\/blog\/opscheck-from-tripwire\/","title":{"rendered":"OpsCheck from Tripwire"},"content":{"rendered":"

Well, Tripwire<\/a> released another free tool today, OpsCheck<\/a>.<\/p>\n

Pretty nifty little java based application to check for inconsistencies between hosts and VM’s to make sure that a vMotion could occur from one host to another (or one of many).<\/p>\n

I figured I’d fire it up, and see what gives.<\/p>\n

When you go to perform an “Operational Check”, you have the choice to scan a single cluster, or scan up to 10 hosts in different clusters. I would imagine that if you have more than 10 hosts in a cluster you would be fine as well. At least that is what the documentation leads me to believe.<\/p>\n

So I fired it up, and pointed it at cluster I use for some testing. I have some VM’s on this cluster, but not many.<\/p>\n

Here is what I found after running a check:<\/p>\n

\"\"<\/a>
\nWoo-Hoo! No host issues, and I only had 1 VM with an issue. So what was the issue?<\/p>\n

\"\"<\/a>
\nA doggone attached CDROM. Well, that’s good to know.<\/p>\n

Now, I will mention that all of the hosts in the cluster, are the same processor type, the networks are 100% identical at the host level, and yada yada yada.<\/p>\n

So what happens if I run OpsCheck against all 8 of my hosts? I have 4 that are several year old IBM boxes, and I have 4 that are brand new HP boxes. Of course the processors are going to have VMotion issues.<\/p>\n

Given that OpsCheck checks at both the VM and Host levels, here is something I have found…<\/p>\n

If you have:<\/p>\n

    \n
  1. 1 or more newer hosts (newer architecture processor)<\/li>\n
  2. 1 or more older hosts (older architecture processor)<\/li>\n
  3. All have ESX\/ESXi configured identically<\/li>\n
  4. The only difference is the actual CPUs used in the hosts<\/li>\n
  5. You know the CPUs are not compatible for VMotion purposes<\/li>\n<\/ol>\n

    You will see:<\/p>\n

      \n
    1. A VM on an old host will have an issue with all new hosts (1 or more issues listed, depending on how many incompatible hosts)<\/li>\n
    2. The opposite, A VM on a new host will have an issue with all old hosts (1 or more issues listed, again)<\/li>\n<\/ol>\n

      Here’s an example running it across 4 IBM x445 boxes, and 4 HP DL580 G5 boxes:<\/p>\n

      \"\"<\/a>I’m not going to try to do the math… But with over 300 guests, across 8 hosts, you can see there are going to be some compatibility issues when half the hosts are old, and half the hosts are new.<\/p>\n

      Regardless, this is a really cool tool, and as I can see from the above graphic, I’ve got 14 VM’s to troubleshoot. That’s the last time I let someone else take point on the VMware environment.<\/p>\n

      Cheers.<\/p>\n","protected":false},"excerpt":{"rendered":"

      Well, Tripwire released another free tool today, OpsCheck. Pretty nifty little java based application to check for inconsistencies between hosts and VM’s to make sure … <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-117","post","type-post","status-publish","format-standard","hentry","category-virtualization"],"_links":{"self":[{"href":"https:\/\/www.jasemccarty.com\/blog\/wp-json\/wp\/v2\/posts\/117","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jasemccarty.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jasemccarty.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jasemccarty.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jasemccarty.com\/blog\/wp-json\/wp\/v2\/comments?post=117"}],"version-history":[{"count":0,"href":"https:\/\/www.jasemccarty.com\/blog\/wp-json\/wp\/v2\/posts\/117\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.jasemccarty.com\/blog\/wp-json\/wp\/v2\/media?parent=117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jasemccarty.com\/blog\/wp-json\/wp\/v2\/categories?post=117"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jasemccarty.com\/blog\/wp-json\/wp\/v2\/tags?post=117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}