Reputation
2,636
Next tag badge:
36/100 score
22/20 answers
Badges
1 7 14
Impact
~118k people reached

Jan
4
reviewed Approve Is it ok to run the `ntp` cronjob hourly?
Dec
21
answered docker: could I run debian-based container on ubuntu host?
Dec
14
reviewed Approve Do I have to have the IP address of a server to initiate a DMCA takedown if the server is behind a service like Cloudflare?
Dec
14
reviewed Approve Running PHP on the Command Line Throws Module Errors About SNMP
Dec
14
reviewed Approve PHP sessions without an expiration period. What happens to the sticky session on the load balancer?
Dec
1
comment Is it safe to use not ECC RAM for cold backup server?
I mean that data you receive with TCP in your application is not exactly the same as you store to database. It may be altered before storing, and memory bit flip can ruin it before you have a chance to compute checksum. I agree that ECC is not needed in most cases, but if you run a bank - you absolutely need it.
Nov
30
comment Is it safe to use not ECC RAM for cold backup server?
Ok, some real wolrd example: you take user input in web form, strip html tags and save it to database. What if memory error hits you when tags striping is not finished?
Nov
29
comment Is it safe to use not ECC RAM for cold backup server?
There's always a small chance that data will be corrupted before the first checksum is calculated. Also you can detect faulty memory much faster and not waste time testing it if you suspect something is wrong
Nov
29
comment Is it safe to use not ECC RAM for cold backup server?
most common L2 protocols (wifi, ethernet) do have checksumming, so I won't agree that data modification wiil go unnoticed if happen on the wire.
Nov
17
awarded  Citizen Patrol
Nov
17
comment High Load average
LA lower than 8 shouldn't be a problem for your server, since it has 4 cores. read this serverfault.com/questions/67759/…
Nov
17
comment High Load average
what is your CPU configuration, how many cores?
Nov
7
comment Wireshark shows “TCP Dup Ack” on SACK after each regular ACK
not exactly, you can receive packets without promiscuous mode if your interface has rp_filter disabled. But scenario when you have mirrored traffic on the same box as source/origin of tcp flow you're monitoring has shitload of things that can go wrong.
Nov
7
comment Same mailserver, two domains. One domain flagged as spam. Possible causes?
If the email is marked as spam - check it's source, there could be a hint why it was marked.
Nov
7
answered Wireshark shows “TCP Dup Ack” on SACK after each regular ACK
Nov
6
answered Installing php-fpm apache 2.4.6 on Centos 7
Nov
4
reviewed Approve How to speed up AD integrated DNS zone replication? Server 2008 r2
Nov
4
reviewed Approve “fdisk -l” like list of partitions and their types for LVM logical volumes?
Nov
4
reviewed Approve how to unlock a ssd disk with hdparm?
Sep
29
awarded  Custodian