Appliance IP addresses are static by default. Hence, changing the IP address of the appliance is a 4-steps process.

1. Change the IP of a network device by editing the network configuration file. (E.g. for network card eth0)

   vi /etc/sysconfig/network-scripts/ifcfg-eth0

   Change the values of IPADDR and NETMASK fields

   ifcfg-eth0

   #My IP description # IPv-4 DEVICE="eth0" NM_CONTROLLED="yes" ONBOOT=yes HWADDR=00:ee:dd:cc:bb:aa TYPE=Ethernet BOOTPROTO=static NAME="System eth0" UUID=aaaabbbb-7777-8888-9999-aaaabbbbcccc IPADDR= 192.168.0.100 NETMASK=255.255.255.0

   Use the command - ip addr show to see a device's IP address

2. When the appliance is moved to a different network subnet - Change the Default gateway

   vi /etc/sysconfig/network

   Change the value of the GATEWAY field in the file

   /etc/sysconfig/network

   NETWORKING=yes HOSTNAME=server1.example.com GATEWAY=192.168.0.1 [...]

   Use the command - ip route show to see a device's IP address

3. Change DNS name (Optional step) - DNS can be added or changed in the file /etc/resolv.conf 

   vi /etc/resolv.conf

   Change or add Domain Name Servers if required.

   resolv.conf

   [...] nameserver 192.168.1.1 nameserver 192.168.1.2 [...]

4. Restart the network service

   restart network services

   service network restart

5. Edit the /etc/hosts file

   Change all the entries referring to the old IP address to use the new IP address. For example:
   
   

   restart network services

   192.168.65.175 montier-management 192.168.65.175 montier-syslog 192.168.65.175 montier-wsm 192.168.65.175 montier-ext-eth

   No need to change entries using the IP address 127.0.0.1

    

6. Stop and Start all system services.

7. In the web console navigate to system → nodes and edit the IP address of the agents in your data node raw.

8. Re-configure syslog for the default domain on each monitored device (the Setup Syslog for device  on the Device Management section)