VERIFY AND TUNE FTP PRODUCTION SERVER TO NOT CRASH FOR MEMORY PROBLEMS

In Progress

Description

WHAT I HAVE TO DO: I have to upload 24h/24h ftp files from camera dvr. The images are uploaded continuously with an ftp session open all the time.

Actually I work with 4 dvr (4 ftp account with more session (8/8/8/32 channels)), soon I will have to work up to 40 dvr (40 ftp account). Actually with 4 dvr I have up to 9Mb/s network traffic, 3% cpu 4 core, 0,3 load, almost 1 million images day. Everything feels good. The basic server setting seems ok to a medium professional specialist.

MY PROBLEM: the server crash each some hours / days. I started with a virtual box debian proftp server and I though is a bug, I tried with an Ubuntu Vsftpd server and I had the same problem, I tried with a Centos Pure ftpd server, the same! I observed the cached and buffer memory grow up in time, and I discovered that with a cron command echo 1 > /proc/sys/vm/drop_caches I don’t solve the problem. I almost solve the problem with a cron command echo 3 > /proc/sys/vm/drop_caches but I don’t stopped completely the crash of the server. I also consider that an echo 3 command is not perfect to use regularly on a production server.

WHAT I NEED: I need of an expert ftp server administrator that help me to understand if is better in my case vsftpd or pureftpd, an expert that is able to study the logs and the configuration of the existent server, that understand why it crash and that tune the server for the best production and affidability performance. I will pay after 10 days of server working without crash.

WHAT I OFFER: I will pay by hours, because until now by project I received request out of market price. I will choose the best skill oriented freelance that can help me, is not mandatory a little hour price, but I will put a hour limit number for the work. I consider that a real professional that know the subject, can do quickly the work. Remember that the system is already on and work good.

My HW/SH configuration:

A base debian 7.9 server with virtual box [url removed, login to view] (not the last because of a bug with proftp if I remember), a VBox share folder where the FTP virtualbox server write data.

FTP VIRTUAL BOX SERVER IN USE:

1) Centos release 7 – 2.1511.e17.centos.2.10.x86_64

Kernel 3.10.0-327.36.1.e17.x86_64

Pure-ftpd [url removed, login to view] [privsep] (mysql authentication)

Mysql Ver 15.1 Distrib 5.5.50-MariaDB for Linux (x86_64) using readline 5.1

2) Ubuntu [url removed, login to view] wily (not 16 because of a bug with pam authentication)

Vsftpd 3.0.2 (mysql authentication)

Mysql Ver [url removed, login to view] Distrib [url removed, login to view] for debian-linux-gnu (x86_64) using EditLine wrapper

3) Debian 8 jessy

Proftpd

Skills: Network Administration, System Admin

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Project ID: #11727724

Awarded to:

pdq

Hi, i currently work in a datacenter as a linux servers administrator, so i believe my skills are quite enough to solve your problem. any kind of linux work is my daily routine. I did same kind of projects before, ple More

€14 EUR / hour
(39 Reviews)
5.0

6 freelancers are bidding on average €16/hour for this job

neosaransh

Hello, Greetings. Hope you are doing well. I am expertise in cloud solution of AWS, Openstack, Rackspace, Google Cloud, Azure etc. I work as cloud solution architect. I am experienced in server migration with Linux ser More

€18 EUR / hour
(11 Reviews)
3.1
kuldeepvk

Hi, I have more than 7 years experience in setup and management of different Linux web hosting servers like CentOS, RedHat, Ubuntu, Debian etc. I have a long time experience in managing complicated hosting envi More

€16 EUR / hour
(6 Reviews)
2.5
MYehia565

Dear, I like the project because it is challenging task and need a lot of debug looking forward to discuss it more with you Regards

€16 EUR / hour
(3 Reviews)
1.9
prashushinde9

Hello, I understood the initial scope of this project. Although i want to discuss further this job in order to prepare the final concept for this project. After Complete discussion over the call or in chat, i wi More

€18 EUR / hour
(0 Reviews)
0.0
damasterbdz

Dear Hiring Manager, First of all thanks for creating an opportunity. Hope you are doing well. I will not propose what the maximum Freelancer do. I dont believe in copy paste Cover letter. I read your project details, More

€16 EUR / hour
(0 Reviews)
0.0