SNMP configuration problems

[Jim_Keats]

All,

I have installed a 3rd party application (sysedge) to monitor my ESX servers. However, I'm getting SNMP errors when I try to "talk" to any other system.

When I try to fetch a value from the MIB of the local ESX server, it works fine.

However, if I try to do the same thing but targetting a different system, I get the following error message:

sendto failed: Operation not permitted

snmpsend failed, msglen is 12

SNMP Operation failed, Sendto failed[/b]

When I try to go from a Solaris system to the ESX server, I get a similar error message:

recvfrom failed: Interrupted system call

snmprecv failed, resp is -2

SNMP Operation failed, Response not received from agent[/b]

I have installed this product (sysedge) on "normal" Linux systems without any problems.

Are there any specific configuration parameters that need to be modified?

Thanks,

\- Jim

[Dave_Mishchenko]

Have you opened the firewall on ESX to allow for SNMP traffic?

[Jim_Keats]

Probably not since I don't remember doing so!

I'm off to the manuals to figure out how to do so (or at least check what the current setting is).

[Dave_Mishchenko]

On the server you want to connect to go to Configuration, Security Profile and click on Properties for the Firewall. You'll likely have to open it on both the server you connect from and connect to.

[Jim_Keats]

I appears that the SNMP ports are "hardwired" to the default of 161/162. Is there any way to modify these?

[Dave_Mishchenko · Accepted solution]

You can open a custom port with this command:

esxcfg-firewall -o <port,tcp|udp,in|out,name>

[Jim_Keats]

Thanks! I found the relavent page in the manual too!

\- Jim