Ruby installation issue - Protected multilib versions

CURRENT CONFIGURATION:
RHEL 6.4 x64 on Amazon AWS VPC

OBJECTIVE:
Install Ruby 2.0.0

ISSUE:
Error running 'requirements_centos_libs_install gcc-c++ readline-devel zlib-devel libyaml-devel libffi-devel openssl-devel autoconf automake libtool bison',
please read /usr/local/rvm/log/1384535887_ruby-2.0.0-p247/package_install_gcc-c++_readline-devel_zlib-devel_libyaml-devel_libffi-devel_openssl-devel_autoconf_automake_libtool_bison.log
Requirements installation failed with status: 1.
Log file:
Error: Multilib version problems found. This often means that the root
cause is something else and multilib version checking is just
pointing out that there is a problem. Eg.:
1. You have an upgrade for libyaml which is missing some
dependency that another package requires. Yum is trying to
solve this by installing an older version of libyaml of the
different architecture. If you exclude the bad architecture
yum will tell you what the root cause is (which package
requires what). You can try redoing the upgrade with
--exclude libyaml.otherarch ... this should give you an error
message showing the root cause of the problem.
2. You have multiple architectures of libyaml installed, but
yum can only see an upgrade for one of those arcitectures.
If you don't want/need both architectures anymore then you
can remove the one with the missing update and everything
will work.
3. You have duplicate versions of libyaml installed already.
You can use "yum check" to get yum show these errors.
...you can also use --setopt=protected_multilib=false to remove
this checking, however this is almost never the correct thing to
do as something else is very likely to go wrong (often causing
much more problems).
Protected multilib versions: libyaml-0.1.3-1.el6.i686 != libyaml-0.1.3-1.1.el6.x86_64
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest

SOLUTION:
Try installation command first time.

curl -L https://get.rvm.io | bash -s stable --ruby=2.0.0

Receive the error message.
Continue installation with commands:

yum downgrade -y libyaml
yum install -y --setopt=protected_multilib=false libyaml-devel
curl -L https://get.rvm.io | bash -s stable --ruby=2.0.0

LINKS:
Ruby Version Manager (RVM)

Копирование Fedora, CentOS, RedHat на VMware

ОКРУЖЕНИЕ: VMware ESXi 5.1, CentOS 6, RedHat 6, Fedora 19
ЦЕЛЬ: Подготовить виртуальную машину для копирования или клонирования с VMware ESXi на VMware ESXi .
ПРОБЛЕМА: Не работает сеть после копирования или клонирования
РЕШЕНИЕ:

# Выполняется от пользователя root
# Скопировать конфигурционные файлы в домашнюю директорию
yes | cp -f /etc/udev/rules.d/70-persistent-net.rules ~/.
yes | cp -f /etc/sysconfig/network-scripts/ifcfg-eth0 ~/.
# Изменить конфигурционные файлы
sed -i 's/^SUBSYSTEM/#SUBSYSTEM/g' /etc/udev/rules.d/70-persistent-net.rules
sed -i 's/^UUID/#UUID/g' /etc/sysconfig/network-scripts/ifcfg-eth0
sed -i 's/^MACADDR/#MACADDR/g' /etc/sysconfig/network-scripts/ifcfg-eth0
sed -i 's/^HWADDR/#HWADDR/g' /etc/sysconfig/network-scripts/ifcfg-eth0
# Почистить перед копированием
rm -rf $(find /tmp -type f)
rm -rf $(find /var/log -type f)
rm -rf $(find /home -type f -name ".bash_history")
rm -fr ~/.bash_history
# Выключить виртуальную машину
poweroff

Скоприровать или экспортировать виртуальную машину.
Восстановить конфигурционные файлы на мастере (если нужно):

yes | cp -f ~/70-persistent-net.rules /etc/udev/rules.d/
yes | cp -f ~/ifcfg-eth0 /etc/sysconfig/network-scripts/

СКАЧАТЬ:

Check on Nagios the latest files in folder with NSClient++ 0.3.9

CURRENT CONFIGURATION: Linux OpenSuSe, Nagios 3.2.3, NRPE; Windows 2003R2 x64 server, NSClient++ 0.3.9.330 2011-09-02

OBJECTIVE: Monitor MSSQL backup, IIS logs replication with Nagios. Check FOLDER with files (MSSQL backup, IIS logs, S3 logs, etc.). Send WARNING if files are older than some hours.

SOLUTION:
NRPE has to work on Nagios server and on Windows client computer with NSClient++.
Nagios server command.cfg file:

define command{
  command_name    check_nrpe_files_written
  command_line    $USER1$/check_nrpe -H $HOSTADDRESS$ -c CheckFiles -a "path=$ARG1$" "pattern=$ARG2$" "filter=written gt -$ARG3$" truncate=4096 "master-syntax=files: %total%" max-dir-depth=$ARG4$ MinWarn=0
}

define command{
  command_name    check_nrpe_files_creation
  command_line    $USER1$/check_nrpe -H $HOSTADDRESS$ -c CheckFiles -a "path=$ARG1$" "pattern=$ARG2$" "filter=creation gt -$ARG3$" truncate=4096 "master-syntax=files: %total%" max-dir-depth=$ARG4$ MinWarn=0
}

Nagios server somename.cfg file examples:

define service{
...
  check_command           check_nrpe_files_creation!F:\\Backup\\SERVER01\\mssql\\backup\\default\\full!*.bkz!30h!0
  normal_check_interval   720
}
define service{
...
  check_command           check_nrpe_files_creation!F:\\Backup\\SERVER06\\ServiceDesk\\backup!*.data!30h!0
  normal_check_interval   720
}
define service{
...
  check_command           check_nrpe_files_creation!F:\\backup\\SERVER01!*-exchange_1_storage_group.bkf!8d!0
  normal_check_interval   1440
}
define service{
...
  check_command           check_nrpe_files_written!D:\\Logs\\IISLogs!*WEB01*.log!6h!4
  normal_check_interval   180
}
define service{
...
  check_command           check_nrpe_files_written!D:\\Replica\\UploadCopy\\s3!LastReplication.log!30h!0
  normal_check_interval   720
}

NSClient++ NSC.ini file:

[modules]
NRPEListener.dll
[NRPE]
allow_arguments=1
allow_nasty_meta_chars=1

Big thanks to NSClient++ author for program and excellent support.

Amazon AWS windows instance w32time service issue

CURRENT CONFIGURATION:  Windows 2008R2 SP1 instance on Amazon AWS VPC
OBJECTIVE: Time synchronise
ISSUE:
C:\>sc start w32time
[SC] StartService FAILED 1290:
The service start failed since one or more services in the same process have anincompatible service SID type setting. A service with restricted service SID type can only coexist in the same process with other services with a restricted SID type. If the service SID type for this service was just configured, the hosting process must be restarted in order to start this service.
C:\>sc start Ec2Config
[SC] StartService FAILED 1068:
The dependency service or group failed to start.
SOLUTION:
Uninstall Ec2ConfigService. Delete all in c:\Program Files\Amazon\Ec2ConfigService\ except  config files in c:\Program Files\Amazon\Ec2ConfigService\Settings\ .
Uninstall w32time by command

w32tm /unregister

Reboot server.
Install and start w32time service by command

w32tm /register

@ping localhost -n 5 >; nul

sc start w32time

Configure w32time service. Example:

w32tm /config /update /manualpeerlist:0.ie.pool.ntp.org,0.europe.pool.ntp.org,3.europe.pool.ntp.org /syncfromflags:MANUAL

@ping localhost -n 2 >; nul

w32tm /monitor /computers:0.ie.pool.ntp.org

w32tm /resync

Reboot the server ant test w32time service. Example

w32tm /monitor /computers:0.ie.pool.ntp.org

w32tm /resync

w32tm /query /peers

w32tm /query /configuration

If w32time service works as you expected download and install Ec2ConfigService
Reboot the server.
LINKS: Reinstall ec2config

Cannot open default admin shares on Windows 2008R2

CURRENT CONFIGURATION: Windows 2008 R2 SP1 (In workgroup), Windows 7

ISSUE: Cannot open default admin shares on Windows 2008R2 (C$, etc.) with account credentials in local Administrators group but the account is not Administrator. I could connect to non standard shares with the same credentials

C:\>net use \\MyServerName\c$ /user:MyServerName\MyAdminUser MyPassword

System error 5 has occurred.

Access is denied.

SOLUTION:

Please open regedit, navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

Create new DWORD (32-bit) Value "LocalAccountTokenFilterPolicy"

Change in data 0 to 1

Please open Start –> Administrative Tools –> Server Manager –> Roles –> File Services –> Share and Storage Management

Right click on C$ –> Stop sharing

Open Command Promt as administrator

C:\>sc stop LanmanServer

C:\>sc start LanmanServer

DOWNLOAD: Download md5: 8062a4edaf664c0f742500c61293153c HKLM_W2008R2_Access_to_admin_shares_fix.zip

LINKS: kb947232