From Containers can not ping host

Ragini_Gupta1 · October 23, 2020, 1:42pm

yes, trying to relay the traffic through a proxy container in between.
So turns out once I reboot the VMs the ping just worked. buntu@benchmark:~$ ping 10.233.10.74
PING 10.233.10.74 (10.233.10.74) 56(84) bytes of data.
64 bytes from 10.233.10.74: icmp_seq=1 ttl=64 time=0.125 ms
64 bytes from 10.233.10.74: icmp_seq=2 ttl=64 time=0.141 ms
64 bytes from 10.233.10.74: icmp_seq=3 ttl=64 time=0.114 ms
64 bytes from 10.233.10.74: icmp_seq=4 ttl=64 time=0.137 ms
64 bytes from 10.233.10.74: icmp_seq=5 ttl=64 time=0.133 ms
64 bytes from 10.233.10.74: icmp_seq=6 ttl=64 time=0.138 ms
64 bytes from 10.233.10.74: icmp_seq=7 ttl=64 time=0.110 ms
64 bytes from 10.233.10.74: icmp_seq=8 ttl=64 time=0.123 ms
64 bytes from 10.233.10.74: icmp_seq=9 ttl=64 time=0.110 ms
^C
— 10.233.10.74 ping statistics —
9 packets transmitted, 9 received, 0% packet loss, time 8178ms
rtt min/avg/max/mdev = 0.110/0.125/0.141/0.017 ms

But, still the ctop command on benchmark LXD container is unable to capture the traffic on Apache Web Server container

Thanks in advance

tomp · October 23, 2020, 1:57pm

Ah good.

I’m a bit confused regarding ctop as haven’t used it, but is it a packet capture program like tcpdump, can you show how you are invoking it?

Ragini_Gupta1 · October 23, 2020, 3:23pm

So what am doing is I first run the Apache Benchmark tool on my benchmark LXD container which sends 5000000 data packet request to the other Web Server LXD Container. And while I am running this, I run the ctop command on benchmark container, and here is what it shows

Command for ctop after installing it is: ctop
Command for Apache Bench:

Alternately, are there some good benchmarking tools for LXD?

tomp · October 23, 2020, 3:24pm

And what are you expecting to see?

Ragini_Gupta1 · October 23, 2020, 3:26pm

I am expecting to see LXD container instances in CGROUP field whereas this is what I am getting:

tomp · October 23, 2020, 3:36pm

I’m not sure ctop supports LXD, does it say it does? Are you running ctop on the host?

Ragini_Gupta1 · October 23, 2020, 3:57pm

oh no, I haven’t checked that yet. I am running ctop on benchmark container

tomp · October 23, 2020, 4:07pm

The benchmark container wont be able to see other containers either.