Archives for General - Page 28
Nagios: Sorry, but Nagios is currently not checking for external commands, so your command will not be committed!
When you tried to stop Nagios to monitor some services from web interfaces – you see the message below: Sorry, but Nagios is currently not checking for external commands,...
Mysql to Postgres – column header in query – it’s all in lower case
By default when we run an query in postgres sql (psql) , all the table header is in lowercase , this is different with mysql. To keep the header...
/usr/bin/python^M: bad interpreter: No such file or directory
it’s because the new line difference between Unix and windows , the easiest fix it run this command dos2unix filename
WordPress is slow: wp-captcha-booster – tech-banker-service
I just found out that i could not access my wordpress today, i checked the server, everything looked good. i restarted the server, it’s still slow, there is no...
Linux: crontab syntax check
The folder / is used to store all cronjobs, the cronjob is saved on the file , the format is: minute hour day month dayofweek username command_to_run. There might...
Ubuntu: Check disk heath – smartctrl and smartmontools
smartctl is a nice tool to check your hard disk health – it will let you know how many hours your disk have been running , the hard disk...
Infoblox: DHCP doesn’t update DNS
In case a client doesn’t have DNS entry when it register with DHCP, it could be because the client just send the DHCP Renew request, DHCP renew will not...
Apache: Cloudflare – Log the real ip
Check this out: #mod_cloudflare Option 1: Installation from Packages Download the appropriate package to your web server and install it using your operating system’s ‘rpm’ or ‘dkpg’ commands. For...
Ubuntu: upgrading from 14.04 to 16.04, error: Invalid command ‘LockFile’,
AH00526: Syntax error on line 55 of /etc/apache2: Invalid command ‘LockFile’, perhaps misspelled or defined by a module not included in the server configuration Action ‘start’ failed. Solutions: Replacing...
Either all Options must start with + or -, or no Option may. Action ‘start’ failed
AH00526: Syntax error on line 5 of /etc/apache2/sites-: Either all Options must start with + or -, or no Option may. Action ‘start’ failed. The Apache error log may...