Cluster & Nodes

Cluster Status & Config

Show status of all cluster services on all nodes

cluster status
nodetool -h 0 ring
acli host.list

Start cluster services

cluster start

Show cluster service status

cs | grep -v UP

Stop cluster services (maintenance only!)

cluster stop

Cluster name, AOS version, and other cluster parameters

ncli cluster info

List all nodes in the cluster

ncli host list

Destroy the cluster — irreversible, all data is lost forever. Never run on a production cluster.

cluster destroy

NTP servers configured on the cluster

ncli cluster get-ntp-servers

DNS/name servers configured on the cluster

ncli cluster get-name-servers

Host IP, hypervisor type and CVM IP per node

ncli managementserver list

Show IPs of all CVMs in the cluster (from a CVM)

svmips

Show IPs of all AHV hosts

hostips

Run a command on all CVMs at once

allssh "<command>"

Run a command on all AHV hosts at once

hostssh "<command>"

Status of Genesis services on the local CVM

genesis status

Restart the Genesis service (e.g. after a config change)

genesis restart

Create the cluster manually from a set of CVM IPs

cluster -s x.x.x.x,x.x.x.x,x.x.x.x create

Restart Genesis on all hosts (e.g. after imaging/creation issues)

cluster restart_genesis

Create 2-Node-Cluster

cluster -s node1_cvm_ip,node2_cvm_ip --cluster_function_list=two_node_cluster create

Enable/disable automatic install of the downloaded hypervisor during a 1-click upgrade

cluster --host_upgrade enable_auto_install
cluster --host_upgrade disable_auto_install

Check current host/AOS upgrade status

host_upgrade -s

Directory where downloaded upgrade packages (AOS, AHV, ...) land

/home/nutanix/software_downloads

Manually push an AOS upgrade to another CVM (run from the CVM that already has the new AOS version)

/home/nutanix/cluster/bin/cluster -u <new_node_cvm_ip> upgrade_node

Watch which node is currently being upgraded

while [ true ] ; do upgrade_status ; sleep 1 ; done

Find what's eating space on a CVM, sorted ascending

du -sm ~/* | sort -n
du -sm ~/data/* | sort -n
du -sm ~/data/logs/* | sort -n

See which unconfigured nodes Foundation/Avahi can discover on the network

avahi-browse -r -c _nutanix._tcp | grep "+ eth0" | grep IPv6

Restart the Avahi daemon if node discovery isn't working

sudo /etc/init.d/avahi_daemon restart

Verify Avahi is running and publishing on port 2100

ps -ef | grep avahi-publish