6,251 reputation
1647
bio website billweiss.net
location Chicago, IL
age 31
visits member for 5 years, 1 month
seen Jul 2 at 17:04

I'm a senior sysadmin and manager at Backstop Solutions Group. Getting lots of experience with CentOS and some Cisco hardware, as well as prodding my way through getting Puppet to work.


Jul
1
comment How do storage IOPS change in response to disk capacity?
There could be some improvement due to increasing platters in a drive, or increasing platter density (less movement per byte), but I doubt it's huge.
Jun
27
comment Send email from main domain using exim4
Could you include your configuration? An Exim expert will likely know some things to try without it, but can say for sure if they can see your full configuration.
Jun
18
comment PHP-FPM user permissions after restart
Welcome to ServerFault! If you found a solution to your problem (and it looks like you did), you should post it as an answer instead of a comment. That way people finding this later will see that there's a solution.
Jun
11
comment Managing LDAP logins to a machine without pam_groupdn: multiple groups allowed
That's a great answer! It would have done what I was looking for.
May
22
comment XenServer 6.2 changing mtu
:D Glad to help. A while ago Xen didn't support jumbo frames at all, so I actually came to tell you you were SOL, but things evidently changed.
May
20
comment Why drop caches in Linux?
Related, and a useful description of the "problem": linuxatemyram.com
Apr
30
comment If I connect an interface which is not set up in operation system to a switch, should the link LED light up?
It depends, sadly.
Apr
23
comment VPN server on Google Compute Engine with OpenVPN
Maybe ask GCE support? This seems like the sort of thing they could answer quickly.
Mar
28
comment Is there a way to read SMART attributes for drives in a SAN?
Page 238 of the owner's manual (ftp.dell.com/Manuals/Common/…) says "The RAID controller monitors all attached drives and notifies users when a predicted failure is reported by a physical disk. "
Mar
28
comment Is there a way to read SMART attributes for drives in a SAN?
Your vendor, if they're doing their job, is watching for that same reason :) NetApp (for example) will ship drives to replace drives in a pre-fail state.
Mar
21
comment Progressive video download in a classroom environment - how to determine bandwidth needed
There's no prioritization done without your configuration, so each stream would get roughly equal slices of the bandwidth. I don't know what you would google exactly, it's a characteristic of a shared network.
Mar
20
comment Brocade mirror ports
I think that fibre channel switches are a bit different than ethernet. tcpdump probably won't work for FC traffic, for instance, and I don't know if it would even listen on that kind of card (since it doesn't look like a NIC).
Mar
17
comment how much openvz burstable memory can be used
It's super cheap. Sometimes you care about that more than performance :)
Mar
17
comment How do I configure an ASA 5505 to pull a DHCP address from a bridged DSL modem/router?
That's what the DSL modem is doing.
Mar
17
comment How do I configure an ASA 5505 to pull a DHCP address from a bridged DSL modem/router?
So, how did straight DHCP work? Or leaving the auth protocol out?
Mar
17
comment How do I accept two different types of network connections using iptables
-m state means "load the state module" (which is where we get --state from). The ESTABLISHED state is packets in a tcp session we've already allowed (which we did with --state NEW on the ssh and 27017 lines)
Mar
16
comment How do I configure an ASA 5505 to pull a DHCP address from a bridged DSL modem/router?
You could also (sorry about all the comments at once) try just turning on DHCP and see if it happens. I doubt it, but it's possible? What are their suggested settings for the DSL modem?
Mar
16
comment How do I configure an ASA 5505 to pull a DHCP address from a bridged DSL modem/router?
Reading that Cisco site, there's a comment above the vpdn group CHN ppp authentication pap line that says If your ISP requires authentication, select an authentication protocol. I think you can leave it out and it'll still work.
Mar
16
comment How do I configure an ASA 5505 to pull a DHCP address from a bridged DSL modem/router?
Huh. You use PPPoE but not auth? Could you try just ip address pppoe on the appropriate interface and not the rest of it?
Mar
16
comment How do I configure an ASA 5505 to pull a DHCP address from a bridged DSL modem/router?
You may want to suffix the ip address pppoe with setroute to say, well, set the route with that pppoe connection. Also, "CHN" is an arbitrary name as far as I can tell, I'm just using what's in the docs