4,311 reputation
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bio website BlackMesh.com
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visits member for 4 years, 2 months
seen Aug 20 at 20:29

Director of Emerging Technology at BlackMesh Managed Hosting, longtime Linux aficionado, sometime Drupal developer (and d.o sysadmin), and occasional filesystem tinkerer.


Jul
13
comment Randomly unable to connect to localhost web server
Has the box had all applicable Microsoft updates applied to it?
Jul
13
comment shutdown linux server right after power outage while on UPS
BBU on the RAID card and journaling FS? A system suddenly losing power under those conditions is not (unreasonably) dangerous.
Jul
13
comment Randomly unable to connect to localhost web server
Okay, and you are checking with -a on netstat, right? In other words, you're getting (and counting) entries in TIME_WAIT, for example?
Jul
13
comment Randomly unable to connect to localhost web server
Is there any kind of software firewall in place on the machine (e.g. Windows Firewall, or that provided with or alongside some anti-virus software)?
Jul
12
comment shutdown linux server right after power outage while on UPS
What's the model number of your UPS? I find it difficult to believe that any UPS manufactured in the last fifteen years lacks a USB or serial interface to connect to the powered equipment.
Jul
12
comment shutdown linux server right after power outage while on UPS
How about just ping -c 1 -w 5 some.host.ip.address || shutdown -h now? Bigger issue here is that even transient problems (e.g. an overloaded router choosing not to reply to a ping) might cause you to shut down. Assuming you're OK with that (and not OK with figuring out how to hook up your UPS), then this will work.
Jul
1
comment All Requests Directed to one Virtual Host
Random suggestion of the day: check whether the lineendings on the .conf file where you're running your Includes are, by any chance, in DOS format (file will do this for you: ASCII text, with CRLF line terminators means DOS format).
Jul
1
comment All Requests Directed to one Virtual Host
I humbly suggest that the [b] conf file is not, in fact, being included, based on the facts as presented here. What do you get when you comment out the include for [a]… does httpd -S still show [a] as the default VHost? If so, you've got some crazy Includes. If not, if [b] shows up, you've got some sort of conflict. If neither shows up, then, to paraphrase a great man, "These are not the Includes you are looking for."
Jul
1
comment What is the easiest way to attach sata cables to the backplane of a 1U super micro case?
Not all of the fan enclosures house fans. Consider routing through the ones that don't. Honestly, I've never had a problem cabling these (and I've done a ton); can you post a picture of the cable you're using and how you're routing it?
Jun
1
comment Amazon Linux vs. Ubuntu for Amazon EC2
Amazon Linux is based on CentOS (forums.aws.amazon.com/thread.jspa?messageID=245351). So you've got a five-way race between three different flavors of RHEL (CentOS, Amazon, and RHEL itself) and two different flavors of Ubuntu (11.04 and 10.04 LTS). Anyone trying to tell you there's only one good choice amongst that list is trying to sell you something. That said, for the vast majority of server uses, I'd only seriously consider CentOS, Amazon, and Ubuntu Server 10.04 LTS, in that order.
May
31
comment Zenoss with Apache Rewrite subdirectory
httpd.apache.org/docs/2.2/mod/mod_rewrite.html#RewriteLog
May
24
comment Adding Subject Alternate Names (SAN) to an existing Cert Signing Request (CSR)
On further research, option #2 is actually quite simple, too, and done by a number of CA's (e.g. to add site.com to a www.site.com cert as a SAN).
May
24
comment drupal7 installation on ubuntu ec2 being not successful
Is /usr/share/cout where you installed Drupal? If not, your DocumentRoot is not pointing where you want it to point.
May
24
comment What could be the cause when the first half of the C-class IP work, the other half not work?
Can you ping the other addresses? Agreed with KCotreau; the most straightforward cause for this would be an incorrect subnet mask. One way this could happen is if the bad mask is part of the route directing traffic towards you in your upstream device (firewall, router, etc.).
May
24
comment Zenoss with Apache Rewrite subdirectory
How about: RewriteRule ^/zenoss($|/.*) http://localhost:8080/VirtualHostBase/https/server:443/VirtualHostRoot/$1 [L,P]. If this doesn't work, either turn on RewriteLog, or do a manual request (e.g. links 'http://localhost:8080/VirtualHostBase/https/server:443/VirtualHostRoot/').
May
21
comment Apache hanging once or twice a day
What are your load numbers, and what's the division of load (e.g. user vs. iowait, f. ex.), when things lock up? If you're running top, try hitting 1 to get per-CPU stats.
May
21
comment Apache hanging once or twice a day
You mentioned you're running CPanel only offhandedly in a comment to one of the answers. CPanel changes things quite a bit. You should mention that you're running it in the question.
May
20
comment Help Leaving Company
Continuing a bit: If that's what your boss needs, he needs to hire that level of experience and skill. I'm strongly betting that he either can't afford, or chooses not to afford, to do that. That is not your problem, except insofar as you shouldn't let it (as it will tend to want to do) affect whether or not you always give the best effort you can when faced with a difficult–or outright impossible–task.
May
20
comment Help Leaving Company
Point out that, if you were perfect at your job, you'd be a top-tier consultant. Instead, you are who you are. Nobody's perfect, but our pay-rates (in an ideal world) reflect the amount of not-perfect we are. Your boss may even pay himself a not-perfect rate and do nearly-perfect work, but that doesn't mean he can expect the same of you at the same pay-rate. Not to be harsh, but in your bio, you call yourself a "noob" sysadmin. In my world, the term is "Junior", but the connotation is the same: you're in your position to be mentored, not to deliver perfect client-facing results from Day 1.
May
20
comment Password less sudo in script
The only possibility, if it's not requiretty, is that your defined sudo line is not getting hit when it's called by cron due to a different PATH. Quick way to test, though; just set ALL=(ALL) NOPASSWD: ALL for the user running the crontab and see if the error still happens. If it does, your issue is requiretty; if it doesn't, your issue is probably PATH.