t00m's tech notes - Check IP or hostname resolution

Metadata

Category: Procedure

Command: getent nslookup

DocType: Reference

Filename: /etc/hosts /etc/nsswitch.conf

Filesystem: /etc

OS: Solaris

Priority: Normal

Scope: Unix Administration

Tag: network DNS hosts nsswitch resolve

Topic: Migration Network
Source

DNSIPHOSTNAME-RESOLUTION.md

--- Category: Procedure Command: getent, nslookup Date: 2021-01-22 DocType: Reference Filename: /etc/hosts, /etc/nsswitch.conf Filesystem: /etc OS: Solaris Priority: Normal Scope: Unix Administration Tag: network, DNS, hosts, nsswitch, resolve Topic: Migration, Network --- # Check IP or hostname resolution ## Information How to check properly IP/hostname resolution ## Procedure * `nslookup` will perform a DNS request * `getent hosts <hostname>` will perform a resolution by looking first in `/etc/hosts`, and if not found, then in DNS (`/etc/nsswitch.conf`)

Check IP or hostname resolution

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