Category Archives: CentOS

letsencrypt renew – 404 – Detail: Invalid response

CentOS, Linux, nginx, , , , ,

So!,

letsencrypt renew output

Domain: www.domain.com
Type: unauthorized
Detail: Invalid response from
 http://www.domain.com/.well-known/acme-challenge/WLpdvugG3YzC53RTrZMJcYWsRqcj64vWLw43HNBkMN6:

nginx error log

66.133.XXX.XXX - - [11/Feb/2017:09:33:20 +0100] "GET /.well-known/acme-challenge/WLpdvugG3YzC53RTrZMJcYWsRqcj64vWLw43HNBkMN6 HTTP/1.1" 404 247 "http://www.domain.com/.well-known/acme-challenge/WLpdvugG3YzC53RTrZMJcYWsRqcj64vWLw43HNBkMN6" "Mozilla/5.0 (compatible; Let's Encrypt validation server; +https://www.letsencrypt.org)"

“Somehow” my domain root has changed.
I had to take a look at /etc/letsencrypt/renewal/domain.com.conf and fix some paths… 🙂

 

Warning: Unknown: open(/var/lib/php/session/ O_RDWR) failed: Permission denied (13)

CentOS, nginx, PHP

I was getting the following error on a *fresh* CentOS…

Warning: Unknown: open(/var/lib/php/session/sess_isu2r2bqudeosqvpoo8a67oj02, O_RDWR) failed: Permission denied (13) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php/session) in Unknown on line 0

This will do the work…

chown -R nginx:nobody /var/lib/php/session && chmod -R 770 /var/lib/php/session

php-fpm – upstream: “fastcgi://127.0.0.1:9000”

CentOS, PHP, , ,

 

2016/11/22 10:01:01 [error] 18314#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client:XX.XX.X.XXX, server: www.domain.com, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "www.domain.com"

Lets edit /etc/php-fpm.d/www.conf and uncomment the line of 127.0.0.1:9000 and comment listen = /var/run/php-fpm/php-fpm.sock.

; Note: This value is mandatory.
listen = 127.0.0.1:9000
#listen = /var/run/php-fpm/php-fpm.sock

And restart PHP-FPM & nginx

/bin/systemctl restart  php-fpm.service
/bin/systemctl restart  nginx.service

CRITICAL | sd-XXXX.host.net | (Return code of 255 is out of bounds)

CentOS, Linux, nginx, Ubuntu

So!,

My nagios was returning a CRITICAL error on one of my servers…

CRITICAL | sd-XXXX.host.net | (Return code of 255 is out of bounds)

and httpd server wasn’t responding….

I think that problem was on IPTABLES / FAIL2BAN ban list. I had 702 banned IPs…
After I clean them up, everything went okay!

captura-de-ecra%cc%83-2016-11-21-as-19-11-52

I was playing hard with them… my bantime was 3600000 (41d) and my findtime was 60000 (16h)…