SSH client or console. nutanix@cvm:~$ allssh ntpdate -q Based on the above output the max variance between the smallest and largest offset value should not be greater than 3 seconds. Log in with SSH to any CVM using terminal emulators such as Tera Term or Putty. The problem I’m running in to, though, is I must run each allssh command individually rather than using a script to run multiple allssh commands. :p). The default password is: nutanix/4u. Error log – Configuration NTP (genesis.out). We are using a production cluster. Maybe run the command from the hypervisor? how do we get around this? nutanix@CVM:~$ allssh ntpq -pn. I would like to do the maintanance for all the host one by one so that I can complete the Maintannance with out downtime for VM. We'll send you an e-mail with instructions to reset your password. The first line will kick off and before it has a chance to complete the second will kick off. Under normal conditions there isn’t usually need to access these pages, but they can be handy in troubleshooting or in performance testing. Change ). @hyoung ho Thank you for posting the query. SSH client . Ainsi, le changement d’heure peut être problématique. Please try again in a few minutes. Every time we do maintenance on an ESXi host, we put the host into maintenance mode and shut down the CVM. Nutanix Prism Custom Logo – Welcome Banner, Script Perl Shutdown VM et ESXi – UPS HPE, Rubrik – Commencer les API avec le SDK Powershell, Rubrik – Affectation SLA par utilisation des tags VMware, Corriger l’heure sans interruption de service via un script de timedrift fourni par Nutanix, Corriger l’heure avec arrêt du cluster Nutanix et attendre le temps. Merci à nos clients et partenaires sans qui rien ne serait possible ! Ainsi, le changement d’heure peut être problématique. Si jamais vous avez déjà de la production critique sur votre cluster Nutanix qui tourne, suivez cette procédure pour revenir dans le passé. As we moved the equipment and started the cluster, the cvm time was changed 1 day ahead. Assurez-vous également de correctement mettre à l’heure vos IPMI/iDRAC et ESXi manuellement puis de spécifier les adresses des serveurs NTP. First, SSH into any CVM in the cluster as the nutanix user, then execute the command allssh "manage_ovs show_interfaces" at the CVM BASH shell: nutanix@NTNX-A-CVM:~$ allssh … If there are CVMs recently restarted - we need to wait approx. Lors de la création du cluster, la timezone qui est configurée est en PST (heure américaine), il est important de changer celle-ci en Europe/Paris (définit dans cet article précédent). nutanix@cvm$ cvm_shutdown -P now nutanix/4u. allssh '(/usr/bin/crontab -l &&echo "*/1 * * * * bash -... To Nutanix homepage To company homepage Je préviens d’avance, ca va être long. This command can be used to issue commands which should run on all cluster nodes. Votre adresse de messagerie ne sera pas publiée. Nutanix/4u (AOS version 5.1 or later) admin (AOS version 5.0 or earlier) vSphere client. Pour aller plus loin, vous pouvez même aller chercher dans les logs pour comprendre l’origine du problème : grep -i ntp data/logs/genesis.out. In the Confirm Maintenance Mode, click OK.The host gets ready to go into maintenance mode, which prevents VMs from running on this host. thank you Like Userlevel 3 +11. nutanix@cvm$ cvm_shutdown -P now. We'll send you an e-mail with instructions to reset your password. PS : Si jamais l’heure des CVM est dans le passé, ne paniquez pas car le changement se fera automatiquement avec l’ajout des NTP dans Prism . allssh “(/usr/bin/crontab -l | sed ‘/fix_time_drift/d’ | /usr/bin/crontab -)”, Astuce : Activez cette fonctionnalité et vérifiez l’offset au bout de 12h ou 24h, faites un produit en croix pour estimer le temps restant. Pour l’activer, nous allons ajouter l’exécution du script dans le crontab de chaque CVM du cluster via la commande suivante : allssh ‘(/usr/bin/crontab -l && echo “*/5 * * * * bash -lc /home/nutanix/serviceability/bin/fix_time_drift”) | /usr/bin/crontab -‘, Vous pouvez vérifier l’offset de chaque CVM via la commande suivante : allssh grep offset ~/data/logs/genesis.out, Une fois que cet offset (négatif) arrive à 0 seconde ou devient positif (si jamais vous le laissez tourner plus longtemps que prévu), nous allons enlever l’exécution du script dans le crontab des CVM via la commande suivante :  Note: Do not reset or shutdown the Controller VM in any way other than the cvm_shutdown command to ensure that the cluster is aware that the Controller VM is unavailable. Right-click the host and select Shut Down.Wait until vCenter Server displays that the host is not responding, which may take several minutes. Does anyone know of a way to initiate subsequent allssh commands only after the prior one running has completed? nutanix/4u. Premièrement, on part du principe que tous les flux firewall sont ouvert entre votre réseau de vmkernel ESXi (Management) / CVM et la target NTP (privée ou public). Virt 4 Dummies © 2020. Make this change persistent: nutanix@cvm$ allssh 'sudo sed -i 's/1024M/512M/' /etc/systemd/journald.conf' nutanix@cvm$ allssh 'sudo systemctl restart systemd-journald' Ce qui n’est pas la configuration recommandée. For example, here’s where we configure DNS on the hypervisor through a CVM: allssh ssh root@192.168.5.1 esxcli network ip dns server add --server=10.1.1.1 allssh ssh root@192.168.5.1 esxcli network ip dns server remove --server=8.8.8.8 allssh ssh root@192.168.5.1 esxcli network ip dns server add --server=10.1.1.2. Hi, nope, the CVM musn't be migrated when putting the ESXi in maintenance mode. Log on to another Controller VM in the cluster with SSH. allssh '(/usr/bin/crontab -l &&echo "*/1 * * * * bash -lc /home/nutanix/serviceability/bin/fix_time_drift") | What if the command /usr/bin/crontab -' continues to run after time? Nutanix has special command, “allssh”. If you are using Nutanix HCI with VMware vSphere ESXi hypervisor and want to, https://portal.nutanix.com/#/page/docs/details?targetId=vSphere-Admin6-AOS-v51:vSphere-Admin6-AOS-v51, Shutting Down a Node in a Cluster (vSphere Web Client), Shutting Down a Node in a Cluster (vSphere command line), Shutdown / Start Nutanix vSphere Cluster – Best Practice. Is there a way to turn the time back faster?2. root. Enter your username or e-mail address. On top of HTML5 based Prism GUI, Nutanix cluster has nifty web pages to give additional information on what is going on in your cluster. The VMs that are not migrated automatically even when the DRS is enabled can be because of a configuration option in the VM that is not present on the target host. ESXi host. If you are logged on to the ESXi host rather than to vCenter Sever, the vSphere Web Client disconnects when the host shuts down. Hello, thank you for this interresting post. You can also combine allssh and iptables commands to enable access to all nodes and do so by just using one command line and running it from just one CVM. Sinon utilisez les pools publiques avec le stratum le plus faible. DRS automatically attempts to migrate all the VMs to another host in the cluster. Right-click the host and select Maintenance Mode > Enter Maintenance Mode. En effet, cette méthode permet de revenir dans le passé en grapillant quelques dizaines de secondes par jour. Confirm that the ESXi host has shut down. allssh '(/usr/bin/crontab -l &&echo "*/1 * * * * bash -... To Nutanix homepage To company homepage

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