Install Icinga / Nagios NRPE plugin

# on Icinga / Nagios client
apt-get install -y nagios-nrpe-server
sed -i 's|allowed_hosts=127.0.0.1|allowed_hosts=192.168.1.197|g' /etc/nagios/nrpe.cfg
/etc/init.d/nagios-nrpe-server restart

cat < /etc/nagios/nrpe.d/my.cfg
command[check_root]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /
command[check_http]=/usr/lib/nagios/plugins/check_http -H localhost
command[check_ssh]=/usr/lib/nagios/plugins/check_ssh localhost
EOF

/etc/init.d/nagios-nrpe-server restart

# test access
/usr/lib/nagios/plugins/check_nrpe -H

# on Icinga / Nagios server
apt-ge

Install icinga srver

<?php
$URL="https://raw.githubusercontent.com/panticz/installit/master/install.icinga.sh";
echo "wget $URL -O - | bash -";
echo " 

";
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
echo htmlspecialchars(curl_exec($c));
curl_close($c);
echo "

";
?>

Admin login
http://YOUR_IP/icinga/
user: icingaadmin
pass: icingaadmin

Icinga Apache configuration
/etc/apache2/conf-available/icinga.conf

Icinga repository
http://packages.icinga.org/

Enable automatic updates
# http://www.panticz.de/debian-ubuntu-automatic-upgrades
wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/scripts/master/enable_auto_update.sh -O - | bash -

configure contact
sed -i 's|root@localhost|YOUR@EMAIL-ADDRESS.com|g' /etc/icinga/objects/contacts_icinga.cfg

change password
htpasswd -c /etc/icinga/htpasswd.users icingaadmin

plugins
http://www.panticz.de/Icinga-plugins

LDAP
a2enmod authnz_ldap

echo "pass1234" > /etc/apache2/ldap_password.inc
chmod 600 /etc/apache2/ldap_password.inc

sed -i 's|=icingaadmin|=*|g' /etc/icinga/cgi.cfg

/etc/icinga/apache2.conf
- AuthUserFile /etc/icinga/htpasswd.users
+ AuthBasicProvider ldap
+ AuthLDAPBindDN "ldap@example.com"
+ AuthLDAPBindPassword "exec:/bin/cat /etc/apache2/ldap_password.inc"
+ AuthLDAPURL "ldap://ldap.example.com:3268/dc=example,dc=com?sAMAccountName?sub?(objectClass=*)" NONE
+ AuthLDAPRemoteUserIsDN off
+ Require ldap-group CN=IPG.DevOps,OU=_IntranetPermissionGroups,DC=example,DC=com

service apache2 restart

# config
https://wiki.icinga.org/display/Dev/Icinga+Core+Debug+Config

# cgi
http://docs.icinga.org/latest/de/cgiparams.html#cgiparams-ahas
http://icinga.example.com/cgi-bin/icinga/status.cgi?servicestatustypes=20&noheader=1

Links
http://www.debmon.org/ - Debian Monitoring Project
http://packages.debian.org/wheezy/icinga
http://packages.icinga.org/debian/ - Icinga repository
https://www.icinga.org/icinga2/ - Icinga 2 preview
http://www.sysadminslife.com/monitoring-2/icinga-1-9-installation-unter-debian-squeeze-wheezy-aktuellste-version/

IpFire

http://wiki.ipfire.org/de/addons/net-snmp/start - SNMP Daemon for IpFire

Edit Cron jobs on IpFire
fcrontab -e
/etc/init.d/fcron restart

# force update dyndns every day
#9 2 * * 0 [ -f "/var/ipfire/red/active" ] && /usr/local/bin/setddns.pl -f
0 19 * * * [ -f "/var/ipfire/red/active" ] && /usr/local/bin/setddns.pl -f

Upgrade
pakfire update
pakfire upgrade

Install Addons
pakfire install -y iftop

Update XEN VM
mount /dev/vg1/fw-boot /mnt/

# add XEN boot entry in GRUB configuration

Spotify under Linux / Ubuntu

<?php
$URL="https://raw.githubusercontent.com/panticz/installit/master/install.spotify.sh";
echo "wget $URL -O - | bash -";
echo " 

";
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
echo htmlspecialchars(curl_exec($c));
curl_close($c);
echo "

";
?>
# install from snap
sudo snap install spotify

cat < /usr/share/applications/spotify.desktop
[Desktop Entry]
Version=1.0
Type=Application
Terminal=false
Exec=/snap/bin/spotify
Name=Spotify
Icon=/snap/spotify/current/usr/share/spotify/icons/spotify-linux-24.png
EOF

Fix "GLIBC_2.14 not found"on Debian Wheezy
http://www.random-dev.de/fix-version-glibc_2-14-found-error/

Debian Squeeze: Update nfs-kernel-server to squeeze-backports

# Debian Squeeze backports
cat < /etc/apt/sources.list.d/squeeze-backports.list
deb http://ftp.de.debian.org/debian-backports squeeze-backports main
deb-src http://ftp.de.debian.org/debian-backports squeeze-backports main
EOF

apt-get update
apt-get -t squeeze-backports install -y nfs-kernel-server
apt-get autoremove -y
reboot

# Links
http://backports.debian.org/Instructions/

OpenWrt on TP-Link TL-WR941ND / TL-WR1043ND / TL-WDR3600 / TL-WDR4300

# 15.05
https://downloads.openwrt.org/chaos_calmer/15.05.1/ar71xx/generic/

# flash tl-wr1043nd
URL=http://downloads.openwrt.org/chaos_calmer/15.05.1/ar71xx/generic/openwrt-15.05.1-ar71xx-generic-tl-wr1043nd-v1-squashfs-factory.bin
wget ${URL} -P /tmp
scp /tmp/openwrt-15.05-ar71xx-generic-tl-wr1043nd-v1-squashfs-factory.bin root@192.168.1.111:/tmp/
ssh root@192.168.1.111
echo 3 > /proc/sys/vm/drop_caches
mtd -r write /tmp/openwrt-15.05.1-ar71xx-generic-tl-wr1043nd-v1-squashfs-factory.bin firmware

# flash tl-wdr4300

Linux Benchmark

# Linux kernel benchmark
http://panticz.de/Linux-Kernel-Benchmark

# sysbench
apt-get install -y sysbench

sysbench --test=cpu --num-threads=1 --cpu-max-prime=20000 run
sysbench --test=cpu --num-threads=$(cat /proc/cpuinfo | grep processor | wc -l) --cpu-max-prime=50000 run

sysbench --test=memory run
sysbench --test=memory --num-threads=$(cat /proc/cpuinfo | grep processor | wc -l) run

time sysbench --test=oltp --oltp-table-size=1000000 --mysql-db=test --mysql-user=root --mysql-password=terceS prepare
sysbench --test=oltp --oltp-table-size=1000000 --mysql-db=test --mysql-user=ro

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