Defining Functions in Allstar
Define these functions in /etc/asterisk/rpt.conf in the functions section.
1=ilink,1 ; disconnect link = *1<node>
2=ilink,2 ; monitor link = *2<node>
3=ilink,3 ; connect link transceive = *3<node>
4=ilink,4 ; remote command = *4<node>
5=macro,1 ; execute macro = *5<macro#>
70=ilink,5 ; system status
71=ilink,11 ; disconnect permanently connected link = *71<node>
72=ilink,12 ; connect link permanent monitor = *72<node>
73=ilink,13 ; connect link permanent transceive = *73<node>
75=ilink,15 ; play full system status
76=ilink,6 ; disconnect all links
77=ilink,16 ; reconnect previously disconnected links Continue reading
Try to do a release upgrade I ran into the issue of /boot not having enough free space. Here is how to resolve that.
Check which kernel you are actively using. DO NOT REMOVE THIS ONE!
uname -r
View all kernels installed on your system.
dpkg --list | grep linux-image
Remove the kernels not in use
apt-get purge linux-image-x.x.x.x-generic
Update grub
update-grub2
Reboot
To run vhosts under separate UIDs/GIDs in apache is very easy with mpm-itk. This will help secure your sites on your shared server.
First install apache2-mpm-itk
apt-get install apache2-mpm-itk
Next add a group and user
groupadd web1 useradd -s /bin/false -d /home/web1_admin -m -g web1 web1_admin
Now add this to the end of your vhost for your site. Be sure to place this inside the </virtualhost> tag and not outside of it.
AssignUserId web1_admin web1
For each of your sites you will user a different username and group. Now be sure to set your web directory to the correct user and group.
Example:
chown -R web1_admin:web1 /var/www/website
It is not exactly easy to add a new user to Nagios but this is how it can be done.
If using ubuntu you will need to modify /usr/local/nagios/etc/cgi.cfg
The important one to view the information on the web interface is “authorized_for_system_information”. It should look like this if you are adding multiple users.
authorized_for_system_information=nagiosadmin,cbrown,jcutright
There are more fields that you can use. These are all the categories that nagiosadmin (the default account) is in.
authorized_for_configuration_information authorized_for_system_commands authorized_for_all_services authorized_for_all_hosts authorized_for_all_service_commands
Of course they had to change the way you restart interfaces in Ubuntu 14.04. Here is how to restart your interface. Make sure you select the correct interface, the example below is for eth0. You can check you interface name in ifconfig.
ifdown eth0 && ifup eth0
To add DNS after adding a static IP you will need to set your name servers in /etc/resolvconf/resolv.conf.d/base
Example:
nameserver 8.8.8.8 nameserver 8.8.4.4
Update resolvconf
resolvconf -u
Then restart resolvconf for shits and giggles
service resolvconf restart
Put this at the end of your .bashrc
function cz {
zonefile=$1
zone=$(basename $zonefile .zone)
named-checkzone $zone $zonefile
}
Then you will be able to use cz to check you zone files.
Example:
cbrown$ cz mpl.com.zone
Sometimes working with a directory full of subdirectories and files you need to compare the directories and files to another version of the files. This comes in extremely useful when restoring a hacked website. To do this you need to have the old copy and the current copy in two different directories on your system. Then run the command below replacing DIR1 and DIR2 with the directoires you would like to compare. This works through the entire directory because of the -r option which stand for recursive. The -q option suppresses the entire output and only outputs the files the differ.
sudo echo "UseDNS no" >> /etc/ssh/sshd_config
This prevents the server from doing a reverse DNS lookup on the IP address, which apparently takes forever sometimes.
We have had an issue with our FreeNAS server kernel panicing when doing multiple large file transfers. We are running 64-bit machine with 24TB of available space.
First you will need to set the FreeNAS filesystem to writeable so you can make the changes to system files.
mount -o rw /dev/ufs/FreeNASs1a /
Now that your filesystem is writeable you will need to modify the /boot/loader.conf file to include the following.
vm.kmem_size_max="1024M" vm.kmem_size="1024M" vfs.zfs.arc_max="100M"
This seems to have fixed the issue with kernel panics for now.
This is how I found to remove the background of an RDC login.
Remove the Wallpaper data in:
HKEY_USERS\.DEFAULT\Control Panel\Desktop