Premature end of script headers: in.cgi
Apache/2.2.15 (Unix) DAV/2
PHP/5.2.17 configured
suEXEC
mod_perl installed?
.htaccess not being read properly
Apache 2.2 not reading the .htaccess?
<Directory “/var/www/html”>
AllowOverride All
Try to edit the .conf for the domain and use AllowOverride All.
Save and restart Apache.
The used table type doesn’t support FULLTEXT indexes
ERROR 1214 (HY000) at line 323: The used table type doesn’t support FULLTEXT indexes
Upgrade to 5.6 and use InnoDB Full-Text Search
couldn’t perform authentication. AuthType not set!
configuration error: couldn’t perform authentication. AuthType not set!:
On Apache < 2.4 we need to use “Allow from all“
online.net servers listz
No output on stdout) stderr: connect to address XXX.XXX.XXX.XXX port 5666: Connection refused
This was tested on a CentOS 7.
This might have TWO possible causes
- nrpe service is down
use service nrpe status to test it.
You might wanna see ‘section’ Add NRPE to service bellow, to activate nrpe as a service. - firewall on nrpe machine is blocking it
Some important files/directories
nrpe.cfg – /etc/nagios/nrpe.cfg
nagios/nrpe plugins folder – /usr/lib64/nagios/plugins/
logs – /var/log/messages
nrpe.cfg
My nrpe.cfg, in a CentOS 7, is located at /etc/nagios/nrpe.cfg
nano /etc/nagios/nrpe.cfg
nrpe log
In a default nrpe installation log is disabled!
You might want to enable it for better debug of the issues… Go to and enable it.
log_file=/var/run/nrpe.log
nrpe debug mode
Yah!, the default installation will came also with debug disabled.
We want it enabled to see more information while we try to use service nrpe status for example.
debug=1
server_address
Server address… it might confuse you!
Server address ISN’T the NAGIOS’s ip address. It’s the actual external IP address of the current machine! allowed_hosts it’s actually it!
Lets check out the status of 5666 port.
lsof -i:5666
netstat -an |grep 5666
If you don’t see any result… this probably means that nrpe is down!
See the ‘section’ Add NRPE to service bellow.
Open PORT on the firewall
sudo firewall-cmd --permanent --zone=public --add-port=5666/tcp firewall-cmd --reload
Add NRPE to service – this will lunch nrpe on reboots –
sudo systemctl enable nrpe.service sudo systemctl start nrpe.service
cloudflare statz
cloudflare registrar
nginx – /.well-known/acme-challenge/
server {
listen 80;
server_name domain.com *.domain.com;
charset utf-8;
location /.well-known/acme-challenge/ {
try_files $uri /dev/null =404;
}
return 301 https://$host$request_uri;
}
Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA.
So, I was trying to create a SSL certificate with certbot…..
root@sd-5555:~# certbot --apache -d blog.domain.com
This was how I’v done to properly create it.
certbot --authenticator standalone --installer apache -d blog.domain.com --pre-hook "systemctl stop apache2" --post-hook "systemctl start apache2"