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  6. Is the ECS Hostname with Suffix novalocal Normal?

Is the ECS Hostname with Suffix novalocal Normal?

Symptom

Hostnames of some ECSs have the suffix .novalocal.

For example, the hostname is set to abc during ECS creation. Table 1 lists the hostnames (obtained by running the hostname command) of ECSs created using different images and those displayed after the ECSs are restarted.

Table 1 Hostnames of ECSs created from different images

Image

Hostname Before ECS Restart

Hostname After ECS Restart

CentOS 6.8

abc

abc.novalocal

CentOS 7.3

abc.novalocal

abc.novalocal

Ubuntu 16

abc

abc

Hostnames of ECSs created from some types of images have the suffix .novalocal, while others do not.

Troubleshooting

This is a normal phenomenon.

The static hostname of a Linux ECS is user defined and injected using Cloud-Init during the ECS creation. According to the test results, Cloud-Init adapts to OSs differently. As a result, hostnames of some ECSs have suffix .novalocal, while others do not.

If you do not need suffix .novalocal in obtained host names, change the host names. For details, see section How Can a Changed Static Hostname Take Effect Permanently?