Cloud DR - How to change the DNS servers on premise Cloud Disaster Recovery Add-On (CDRA)
概要: Steps to change the DNS server entries on the CDRA
この記事は次に適用されます：
この記事は次には適用されません：
手順
Please ensure on the new DNS server(s), the forward and reverse records for the Cloud Disaster Recovery Add-On (CDRA) that resides on premise are configured prior to any changes.
1. Login to the CDRA over ssh
username is cdr
password - if not known contact Dell EMC Support
2. Once logged into the CDRA over ssh, elevate to root
sudo -i
3. Run ifconfig and check for the interface name the IP is associated to:
[cdr@cdra.dell.emc ]$ ifconfig
ens160: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.240.XXX.XXX netmask 255.255.255.0 broadcast 10.240.XXX.XXX
4. Edit the related interface configuration. For this example it will be for interface ens160
5. Change to the following directory: cd /etc/sysconfig/network-scripts/
-Edit the ifcfg-ens160 configuration file and change the DNS1 and DNS2 entries with the new DNS server IPs
vi ifcg-ens160
TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="ens160"
UUID="XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"
DEVICE="ens160"
ONBOOT="yes"
AUTOCONNECT_PRIORITY=-999
HWADDR=XX:XX:XX:XX:XX:XX
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_PRIVACY="no"
DNS1= New DNS IP <--
DNS2= New DNS IP <--
DOMAIN=dellemc.com
IPADDR=10.240.XXX.XXX
GATEWAY=10.240.XXX.XXX
PREFIX=24
6. Restart network
/etc/init.d/network restart
7. Confirm the related configuration file is update with correct DNS server entries:
[cdr@dellemc.com network-scripts]$ cat /etc/resolv.conf
search dellemc.lab
nameserver 10.240.XXX.XXX
8. Log back into the CDRA webpage and ensure it is accessible after DNS change and confirm the DNS entries are updated on the CDRA -> Configuration -> Cloud DR Add-On, for the Primary DNS Server and Secondary DNS Server.
1. Login to the CDRA over ssh
username is cdr
password - if not known contact Dell EMC Support
2. Once logged into the CDRA over ssh, elevate to root
sudo -i
3. Run ifconfig and check for the interface name the IP is associated to:
[cdr@cdra.dell.emc ]$ ifconfig
ens160: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.240.XXX.XXX netmask 255.255.255.0 broadcast 10.240.XXX.XXX
4. Edit the related interface configuration. For this example it will be for interface ens160
5. Change to the following directory: cd /etc/sysconfig/network-scripts/
-Edit the ifcfg-ens160 configuration file and change the DNS1 and DNS2 entries with the new DNS server IPs
vi ifcg-ens160
TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="ens160"
UUID="XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"
DEVICE="ens160"
ONBOOT="yes"
AUTOCONNECT_PRIORITY=-999
HWADDR=XX:XX:XX:XX:XX:XX
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_PRIVACY="no"
DNS1= New DNS IP <--
DNS2= New DNS IP <--
DOMAIN=dellemc.com
IPADDR=10.240.XXX.XXX
GATEWAY=10.240.XXX.XXX
PREFIX=24
6. Restart network
/etc/init.d/network restart
7. Confirm the related configuration file is update with correct DNS server entries:
[cdr@dellemc.com network-scripts]$ cat /etc/resolv.conf
search dellemc.lab
nameserver 10.240.XXX.XXX
8. Log back into the CDRA webpage and ensure it is accessible after DNS change and confirm the DNS entries are updated on the CDRA -> Configuration -> Cloud DR Add-On, for the Primary DNS Server and Secondary DNS Server.
その他の情報
If connection issue occurs or prefer not to do changes over ssh, login to the CDRA console from the VCenter the CDRA is deployed from.