2,999 reputation
1615
bio website
location Mountain View, CA
age 36
visits member for 5 years, 7 months
seen Nov 13 at 1:59

I do the sysadmin-thing for a living, and I'm terrible at writing blurbs like this. I deal mostly with various linux infrastructure, and a small cluster. I tend towards not liking black/opaque boxes which I'm to have an informed opinion about or have any kind of responsibility for. I really like knowing "how stuff works" and how "stuff" talks to "other stuff", as I feel it gives me a better foundation to make informed decisions.


Nov
5
answered Postgres Remote Connection Timeout
Nov
5
comment Cron occasionally fails with “grandchild #X failed with exit status 3”
This is likely not a problem with cron, grandchild if cron would be what you told cron to run. SIGBUS is the kernel/cpu/hardware telling your program it made a funky memory access. Can you tell us about what cron runs ? The full strace would be neat if you can post it (may contain sensitive info, so you may not want to post it).
Nov
5
comment Best practice for delivering SFTP key to client?
In terms of key management, the "best practice" would really be: You don't distribute the private key, you don't even have the private key, they send you their public key. So; in your case, you can have the installer generate the public/private keypair and somehow get that into your system. You're still left with a problem of authentication, which you likely cannot do securely, portable and/or unattended. If you'd be OK with an attended install, make the installer prompt them to log on at which point the public key can be transferred to you and tied to their account(s).
Oct
21
awarded  Custodian
Oct
21
reviewed Approve Can you get any program in Linux to print a stack trace if it segfaults?
Oct
11
awarded  linux
Oct
9
revised Python Script portion failing to execute within init.d/ on RedHat 6.5, why?
Fixed hideous structure and formatting and damned angle-brackets, typos
Oct
9
revised Python Script portion failing to execute within init.d/ on RedHat 6.5, why?
Fixed hideous structure and formatting
Oct
9
answered Python Script portion failing to execute within init.d/ on RedHat 6.5, why?
Sep
24
awarded  Autobiographer
Aug
5
awarded  Guru
May
18
awarded  Yearling
May
13
awarded  Enlightened
May
13
awarded  Nice Answer
Feb
26
comment Varnish running out of open ports, lots of SYN_SENT connections
When you say you're running out of open ports, exactly what do you mean, which component is complaining and on which side (browser -> varnish, varnish -> apache) ? How is traffic directed at varnish is it NATed ?
Nov
1
comment Tunnel is up but cannot ping directly connected network
I'd give packet-tracer on the ASA a try, it's previously at least helped me pinpoint where things are going wrong. I.e. you could run packet-tracer on the combination of icmp/ping that's failing and see what decision your ASA made for it. (And, it's not entirely unlikely that your problem is NAT. If you do NAT of your hosts going out, you'll explicitly have to exempt tunnel traffic from NAT).
Oct
30
answered Linux server became extremely slow
Sep
30
awarded  Guru
Aug
6
answered Zero byte files after power failure - ext4 centos 6.4
Jul
16
awarded  Good Answer