You have to stop cell service properly before you change ilom network config in cell. You can find the procedure at How to restart cell services properly I propose you use ipconf to update your network config in exadata system. Don’t use ilom command line , because it doesn’t change /opt/oracle.cellos/cell.conf file, and you will have a problem during exadata patching.
[root@41cel01-m ~]# /usr/local/bin/ipconf [Info]: ipconf command line: /opt/oracle.cellos/ipconf.pl -nocodes Logging started to /var/log/cellos/ipconf.log Interface ib0 is Linked. hca: mlx4_0 Interface ib1 is Linked. hca: mlx4_0 Interface eth0 is Linked. driver/mac: igb/00:xx:xx:xx:xx:xx The current nameserver(s): xxx.xxx.55.18,xxx.xxx.55.19 Do you want to change it (y/n) [n]: n The current timezone: Europe/Zurich Do you want to change it (y/n) [n]: n The current NTP server(s): xxx.xxx.40.42 xxx.xxx.40.10 Do you want to change it (y/n) [n]: n Network interfaces Name State Speed Status IP address Netmask Gateway Net type Hostname ib0 Linked UP -xxx.xxx.100.5 255.255.252.0 Private cel01-priv1.mydomaine.local ib1 Linked UP -xxx.xxx.100.6 255.255.252.0 Private cel01-priv2.mydomaine.local eth0 Linked default UP xxx.xxx.64.12 255.255.255.0 xxx.xxx.64.1 Management 41cel01-m.mydomaine.local Select interface name to configure or press Enter to continue: Select canonical hostname from the list below 1: cel01-priv1.mydomaine.local 2: cel01-priv2.mydomaine.local 3: 41cel01-m.mydomaine.local Canonical fully qualified domain name [3]: Select default gateway interface from the list below 1: eth0 Default gateway interface [1]: Canonical hostname: 41cel01-m.mydomaine.local Nameservers: xxx.xxx.40.42 xxx.xxx.40.10 Timezone: Europe/Zurich NTP servers: xxx.xxx.40.42 xxx.xxx.40.10 Default gateway device: eth0 Network interfaces Name State Speed Status IP address Netmask Gateway Net type Hostname ib0 Linked UP -xxx.xxx.100.5 255.255.252.0 Private cel01-priv1.mydomaine.local ib1 Linked UP -xxx.xxx.100.6 255.255.252.0 Private cel01-priv2.mydomaine.local eth0 Linked default UP xxx.xxx.64.12 255.255.255.0 xxx.xxx.64.1 Management cel01-m.mydomaine.local Is this correct (y/n) [y]: Do you want to configure basic ILOM settings (y/n) [y]: Loading basic configuration settings from ILOM ... ILOM Fully qualified hostname [41cel01-r.mydomaine.local]: Inet protocol (IPv4,IPv6) [IPv4]: ILOM IP address [xxx.xxx.64.17]: ILOM Netmask [255.255.255.0]: ILOM Gateway or none [xxx.xxx.64.1]: ILOM Nameserver (multiple IPs separated by a comma) or none [xxx.xxx.40.10,xxx.xxx.40.42]: xxx.xxx.55.18,xxx.xxx.55.19 <==== New ilom nameserver ILOM Use NTP Servers (enabled/disabled) [enabled]: ILOM First NTP server. Fully qualified hostname or ip address or none [xxx.xxx.40.10]: ILOM Second NTP server. Fully qualified hostname or ip address or none [xxx.xxx.40.42]: ILOM Vlan id or zero for non-tagged VLAN (0-4079) [0]: Basic ILOM configuration settings: Hostname : 41cel01-r.mydomaine.local IP Address : xxx.xxx.64.17 Netmask : 255.255.255.0 Gateway : xxx.xxx.64.1 DNS servers : xxx.xxx.55.18,xxx.xxx.55.19 Use NTP servers : enabled First NTP server : xxx.xxx.40.10 Second NTP server : xxx.xxx.40.42 Timezone (read-only) : Europe/Zurich VLAN id : 0 Is this correct (y/n) [y]: y [Info]: Run /opt/oracle.cellos/validations/init.d/saveconfig Use of uninitialized value $qinq_conf in -f at /opt/oracle.cellos/ipconf.pl line 8444. [Info]: Original file /etc/ssh/sshd_config will be saved in /etc/ssh/sshd_config.backupbyExadata [Info]: Generate /etc/ssh/sshd_config with ListenAddress(es) xxx.xxx.64.12, 127.0.0.1 [Info]: Save /etc/sysctl.conf in /etc/sysctl.conf.backupbyExadata [Info]: Adjust settings for IB interfaces in /etc/sysctl.conf Re-login using new IP address xxx.xxx.64.12 if you were disconnected after following commands ip addr show eth0 sleep 4 service sshd condrestart
After exadata 20.1.0, we can change ilom dns by one command line as below:
ipconf -update -dns IP_addr_list [-ilom-dns ILOM_DNS_list]
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