Need fix for my VPS crashes

The problem:

Recently my server started crashing over and over. There weren't any crashes for 3+ weeks and after an update of "WP super cache plugin" I had to manually edit my htaccess file to apply some rules. On the next morning occurred the 1st crash. Then I removed the plugin manually with every file and directory from the FTP + edited to the original position the htaccess file. 30+ hours after that occurred the 2nd crash. Haven't done anything after that, just rebooting the server when crashes and for the last 4 days there were 4-5 crashes

The server:

It hosts only 1 site with under 100k monthly visitors, but increasing. The hardware of the VPS is 2x2.4ghz CPU, 4gb RAM, 80gb SSD. This is self-managed VPS. Attaching screens from the console and the httpd and MySQL error logs so you can get a better idea. More server details - Nginx, Centos, MariaDB. It also has a created swap file. The VPS provider is [login to view URL]

The website:

The website hosted on the server is a free service website which works with a javascript form, which calls a PHP function with an API communicating with another server. All of the users are using this form when entering the website. Its platform is Wordpress. Before I transfer the website to this VPS it was on a shared hosting. I had to transfer it because they have limited it to 15 PHP processes which weren't enough for the website and was showing different server errors for insufficient resources.

What I want:

Identification of the problem and a permanent fix for it in 12 hours + stress test + a report what has been done. I was working with 2 more freelancers on this VPS, 1 of them was setting the server + transferring the website and the other one I hired 2 weeks after to optimize the server and create a swap file. As I said before - after the optimization the server hasn't crashed for 3+ weeks and according to my google analytics, I had few days that were even hotter than these 3 days of crashing. Because of this, I want 2-3 weeks guarantee that the problem won't appear again - a PERMANENT fix of this problem.

My budget:

It is a fixed price of 50EUR. Of course, the freelancer system gives us the option to set custom bids and I reserve my right to take whatever bid I see more suitable for my needs.

P.S. Please, excuse me for my English as it is not my native language.

Taidot: Linux, MySQL, PHP, Virtuaalipalvelin, Web hosting

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Tietoa työnantajasta:
( 3 arvostelua ) Blagoevgrad, Bulgaria

Projektin tunnus: #14730127

33 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön

€111 EUR 1 päivässä
(255 arvostelua)
€88 EUR 1 päivässä
(273 arvostelua)
€155 EUR 3 päivässä
(207 arvostelua)

Hello, Do you have ssh access to the server?

€49 EUR 1 päivässä
(447 arvostelua)
€222 EUR 3 päivässä
(86 arvostelua)

Hi, Thanks for giving me this opportunity to give you proposal for your requirement. I have reviewed your requirement and i find this quite interesting, i would like to work on this project. Relevant Skills and Experi Lisää

€100 EUR 3 päivässä
(208 arvostelua)
€166 EUR 3 päivässä
(205 arvostelua)

Your issue is Mysql+OS-related. There is database corruption and another minor setting that needs to be changed. MariaDB should also be upgraded to 10.2, since 5.5 is older than my grandma. Database corruption is a Lisää

€60 EUR 1 päivässä
(254 arvostelua)

My WORDPRESS Experiences and Qualifications: * Wordpress Setup & Update & Upgrade * Wordpress + Woocommerce * Wordpress Perfomance Boosting & Speed Optimisation * Wordpress Server Configuration & Management * Se Lisää

€250 EUR 1 päivässä
(30 arvostelua)

A proposal has not yet been provided

€49 EUR 1 päivässä
(264 arvostelua)

Hi, I Have been active in hosting and cloud field from last 7 years working on following technologies: Control panels: cpanel , whm , plesk , ispconfig , webmin , virtualmin ,centos web panel, linux based , windows b Lisää

€49 EUR 1 päivässä
(237 arvostelua)

I will fix vps crash issue with a permanent solution successfully as working these task on daily basis in data center servers. Relevant Skills and Experience I have more than 8 years experience in, Linux Servers Setup Lisää

€50 EUR 1 päivässä
(283 arvostelua)
€100 EUR 3 päivässä
(166 arvostelua)

hello, i have read your description and your screen shots . i have 7years expperience and can give you gurantee of my work Relevant Skills and Experience linux,system admin,aws,etc Proposed Milestones €50 EUR - i can Lisää

€50 EUR 1 päivässä
(69 arvostelua)

Expert in server management SSL Certificate, Cpanel/WHM, Dns,Centos, web panel, Apache, Plesk Panel IIS,Debian, Nginx, Ubuntu power MTA, enterspire,Aws,Expert in Migration services Relevant Skills and Experience 6+ Lisää

€44 EUR 0 päivässä
(79 arvostelua)

Greeting for you :-) Dear Client, I read your project brief ..After that I have Some queries in my mind about the project ..I need to discuss shortly if you allowing me, I will follow your instruction and complete the Lisää

€155 EUR 2 päivässä
(24 arvostelua)

I will give you 100% solution

€220 EUR 1 päivässä
(46 arvostelua)

Hi, We will audit the server and resolve the issue of the server and website. Thank you. Relevant Skills and Experience More than 5 years in this field Proposed Milestones €48 EUR - We will audit the server and res Lisää

€48 EUR 1 päivässä
(79 arvostelua)

Hello, I offer vps hosting with the most advanced configuration for high traffic wordpress sites. My prices start at 45$/month with free migration. I would recommend the 90$ month package for your site and I can of Lisää

€111 EUR 1 päivässä
(38 arvostelua)
€155 EUR 3 päivässä
(18 arvostelua)