5 Essential Tips for Maximizing Your Experience at Nutanix .NEXT for Bloggers
2 of 3 nodes are fine and working. The 3nd CVM is up and i could ping it. Restart the Cluster with “allssh genesis stop cluster_health; cluster start” does not start these Cluster Partner. After Login in Prism i saw a “Disk degraded” for these 3rd node and now these disk is missing. How to fix node Nr. 3 in a 3 Node Cluster?
Beside the “classical” Monitoring with snmp or agent based version now we are talking about Metrics and the Monitorng of LiveData with the OpenSource Project Prometheus. The Virtualization is made with the powerfull Tool of Grafana.The access to the Data will be made with so called “Node-Exporter” which could we found under GitHUB. One is present for Nutanix! My Testcase in the homelab is build with the following items:NutanixCluster <- Prometheus <- Grafana192.168.10.80 192.168.10.123 192.168.10.100Nutanix CE Ubuntu 18.04 LTS Ubuntu 18.04 LTSPrometheus 2.2.1 Grafana 7.0.4GO 1.10RequirementsCreate NEW User in Nutanix Prism Central with VIEWER Rights2. Installation of Prometheus on Ubuntu 18.04 LTS with running GO!Good Sourcse will be available here or here.3. Installation ofvon Grafana 7.x on a second Ubuntun 18.04 LTSGood Source are found here. Start of Connection to NutanixWe download the GO Binary for the Nutanix Exporter to the Prometheus VM in the folder of GO/BINWe will tes
Sometimes it is very boring to install the PrismCentral VM on AHV after your Cluster runs but it gets buggy. So here are some tips to solve problems there Deploy a Network in your new AHV Environment first Deploy the new VM via Prism Element Homepage Often you get an error with ssl and httpd could not start! Login via ssh to ip of your fresh deployed Prism Central Server Login via nutanix / nutanix/4u sudo -i service httpd status (mostly not started) service httpd start (ignore the ssl errors in the output) Now the new PrismCentral Website should arrive after a while under https://ip-of-prismcentral Login not possible with admin / admin or admin / nutanix/4u? Login again via ssh and nutanix / nutanix/4u to prismcentral sudo -i passwd admin set your admin password and repeat it reboot wait a while login to prismcental and admin / your password Register your cluster in prism element
The newest Version (Release 5.18) could be downloaded here:https://next.nutanix.com/discussion-forum-14/download-community-edition-5-18-38417?fbclid=IwAR0VaxbzWU-IzWLsWrOQVW7gD26AK9yQotPKhyl-ZSxRE2Iw7WOk8UmL74wBUT:If you have deployed a Prism Central and want to update you get an error about an unsupported version in Prism Central Upgrade Section.To solve that do the following:Unregister your cluster from Prism Central (2 Times ssh on one of your CVMs, onetime on your Prism Central CVM). Read this article: https://next.nutanix.com/prism-infrastructure-management-26/unregister-a-prism-central-37829You should grab your Cluster-UUID and Prism Central UUID via “ncli cluster state” first!Step 1:Login to one of your cvm in a running cluster. Check Cluster Status with “cluster status” Do “ ncli multicluster remove-from-multicluster external-ip-address-or-svm-ips=Prism-Central-IP username=PrismCentral-User password=password force=true” Login to Prism Central CVM and unregister the Cluster “p
In the first 3 Sections we saw solutions with classical snmp monitoring, dynamic monitoring with checkmk and metrics with prometheus and grafana.No we try the windows way. A Windows Application from the german vendor “Paessler” which could be tried for free for 100 sensors (not Nodes or VMs!).We download the Package here and install.After successfull Installation we get a Browser Page on Port :8080 and a LoginPrompt with default prtgadmin / prtgadmin.We login and create a new Host over the Menue Geräte/Geräte hinzufügen for our Nutanix Cluster:Zum Einsortieren hab ich hier “Virtuelle Systeme” gewählt und keinen eigenen neuen Knoten angelegtType in Name and IP from our Cluster (Nutanix Cluster IP) ATTENTION: Scroll DOWN and type in the Values from your SNMP Secrets!: After Click on OK the Host is created and a basic check is made via PING.. The System tries an autodisovery now but this is not needed for a nutanix cluster here! We klick on NOT “Automatic Discovery” (takes very long ag
The dynamic Inventory of a Hosts and the creation of Service Checks is one of the benefits of the checkmk opensource tool CheckMK. This Tool could be installed as a single Installation but it is also part OMD or Openitcockpit, which are using checkmk as an extension In my Homelab i will give a short overview of the use of checkmk with Openitcockpit with a nutanix 3 node cluser.Requirements: Enable SNMP in Prsim Centrala) Port 161/UDPb) Ein Username und Kennwörter fuer SHA und AESIf the Requirements are finished just create a new Host in Openitcockpit with Default Values. Ping is the standard Check first then. AFTER the Creation and Export of the Config we chood CHECKMK_DiscoveryWe choose SNMP V3 as Discovery Method and type in the Credentials which we prepared a step above in Prism Central.The FIRST Discovery tooks some time! If no result is shown, the credentials may we wrong or MD5 is set instead of SHA in the Auth section! If its working we get a bunch of discoverd services now:We g
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