dns cache problems on the dnsmasq?

Question

Dnsmasq have been installed on my os.
cache-size=1024 was written in /etc/dnsmasq.conf.
1.how to list all the dns cache on my dnsmasq?
2.how to keep the dns cache expiration till 3600 seconds on dnsmasq?

Answer 1

To dump the cache of dnsmasq, you have to need to enable log-queries.

Then type:

# kill -SIGUSR1 `pgrep dnsmasq`

Also for keep the TTL for cache expiration to 3600 seconds, you need to start dnsmasq with:

--max-cache-ttl=<time>