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In the following instructions the node cld-np-19, an INFN node, is the one to be reinstalled

First of all take note of the IP addresses used by the VM for the management and data networks (192.168.60.x and 192.168.61.x) ) and the relevant interfaces

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• The hostgroup must be hosts_all
• The kickstart to be used must be TBC
• TBC

When the node restart restarts after the update, make sure that SELinux is disabled:

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modprobe br_netfilter

and then rerun puppet

Start and enablepuppet:If the procedure terminated without error, enable puppet and reboot the host

systemctl start puppet; systemctl enable puppetenable puppet
shutdown -r now

Enable the nagios check for lv

Log on cld-nagios.cloud.pd.infn.it

 cd /etc/nagios/objects/

Edit cloudcomputenodes.cfg (or the other file where this compute node is defined) and add a passive check:

define service{
        use                             LVS       ; Name of service template to use
        host_name                       cld-np-19
        service_description             LVS
        freshness_threshold             28800
        }

Make sure there are no problems in the configuration:

[root@cld-nagios objects]# nagios -v /etc/nagios/nagios.cfg

and restart nagios to have applied the new check:

 [root@cld-nagios objects]# systemctl restart nagios

• Enable the checks in Nagios for this host

• Wait till all checks are ok (in particular the VM network and volume one: remember to enable the node just for the time to force the run from Nagios; othwerwise the check will fail.)

• Add this node in the following scripts on cld-ctrl-01: /usr/local/bin/display_usage_of_hypervisors.sh, /usr/local/bin/host_aggregate.sh, /usr/local/bin/new_project.sh, /usr/local/bin/free_resources_compute_nodes.sh
• Add this node in the /etc/cron.daily/vm-log.sh script on cld-log
• Create the directory /var/disk-iscsi/qemu/cld-np-19 in cld-log
• Verify that a ssh from root@cld-log to root@cld-np-19 works without requiring password

• Stop puppet on the 2 controller nodes:

  Code Block
  language bash
  systemctl stop puppet

  
  

• Add the new compute node in cld-config:/var/puppet/puppet_yoga/controller_yoga/templates/aai_settings.py.erb

• Run puppet on the first controller node (this will trigger a restart of httpd):

  Code Block
  language bash
  puppet agent -t

  
  

• Run puppet on the second controller node (this will trigger a restart of httpd):

  Code Block
  language bash
  puppet agent -t

  
  

• Start puppet on the two controller nodes:

  Code Block
  language bash
  systemctl start puppet

  
  

• Enable the host:

  Code Block
  language bash
  openstack compute service set --enable cld-np-19.cloud.pd.infn.it nova-compute

  
  

• Add the host to the 'admin' aggregate

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