1,679 reputation
315
bio website collate.info
location Fort Myers, FL
age 28
visits member for 3 years, 2 months
seen Aug 27 at 14:51

I'm a network guy for a media company. I take care of a medium-sized WAN, all LAN equipment, firewalling, load balancers, a decent number of Linux servers (CentOS and RHEL), and some Linux-based applications: Nagios, Splunk, Cacti, MySQL, Apache httpd, Apache Tomcat, Apache Solr, etc.


Sep
30
awarded  Explainer
Jul
30
awarded  Yearling
Jul
30
awarded  Yearling
Jul
30
awarded  Yearling
Jan
27
answered Cisco IOS subnet mask using bit notation
Jan
18
comment What is the largest hardware clock update the Linux kernel “11-minute mode” can make?
I couldn't find any reference information on 11-minute mode in the kernel and what limitations it might have. However, ntpd does check that the system time and the ntp server time are within 1000 seconds. If not, it won't even try to correct the system time. It thinks it might be that far off on purpose. Can you think of some way to verify that this kernel mode is limiting you rather than ntpd?
Jan
16
revised move file with same as folder name
added 11 characters in body
Jan
16
answered move file with same as folder name
Nov
28
answered MySQL 5.5 InnoDB = OFF?
Nov
27
answered Does IPTables take advantage of multicore processors?
Nov
27
comment Does IPTables take advantage of multicore processors?
@Nils The interrupts generated by an interface could be redirected to another, less busy CPU. Also, multiple interfaces could have their interrupts sent to different CPUs to spread the load. I think you're right about traffic from a single interface not being balanced across CPUs on a per-packet basis.
Nov
27
awarded  Citizen Patrol
Nov
27
comment Does IPTables take advantage of multicore processors?
I'm not sure why Chopper3 closed this question. To answer it though: Iptables is really just the userspace front-end for the linux firewall which is netfilter. Netfilter is really a system of hooks in the kernel around packet processing. Each packet is processed by the kernel by triggering an interupt. Whether your kernel balances interrupts across multiple CPUs depends on how old it is. See this thread on StackOverflow about it. stackoverflow.com/questions/7467688/…
Nov
14
comment linux + configure/setup new user in order to disable password from SCP command
You can submit SFTP commands in HEREDOC format in a shell script, but SFTP (which is simply the next generation replacement for SCP) does not support inputting a password in batch mode. In this case, you cannot even use an expect script.
Nov
14
comment linux + configure/setup new user in order to disable password from SCP command
If you want to use SCP, there aren't any other options. You could use other languages besides expect, but these two approaches are the only ones available. If you really can't use either, you'll need to use a less secure protocol for file transfer.
Nov
14
answered linux + configure/setup new user in order to disable password from SCP command
Nov
11
answered Can I remove these DNS zones?
Nov
10
answered Identify the PID from a MySQL connection ID?
Nov
10
answered Apache2 merge multiple Set-Cookie headers
Nov
10
comment Added a third DNS Resolver and pulled a DNS A record… now inaccessible from certain parts of the world?
The result is you are experience intermittent name resolution failures that are impacting your users.