Laurent Domb – Page 10 – Chief Technologist AWS

Puppet

EL 6.2 RHEL6.2 Puppet 2.7.9 The Foreman Mcollective RabbitMQ

laurent13 years ago13 years ago019 mins

This How to will walk you thru the steps of installing Pupppet, The Foreman, RabbitMQ, and MCollective: 1. Add your hostname to /etc/hosts.conf and /etc/sysconfig/network [root@puppet ~]# echo -e “127.0.0.1 puppet.${DOMAIN} puppet foreman.yourdomain.com foreman localhost” > /etc/hosts [root@puppet ~]# echo -e “NETWORKING=yes\nHOSTNAME=puppet.yourdomain.com” > /etc/sysconfig/network [root@puppet ~]# hostname foreman.yourdomain.com 2. First we need to add the…

Puppet

Puppet Dashboard, mysql ibdata cleanup

laurent13 years ago12 years ago04 mins

Syncing a 100-200 hosts every 30 minutes and reporting to the dashboard creates a huge amount of data. This reflects in the /var/lib/mysql/ibdata file which can easily grow to 15-20GB. In this blog post I’ll show how to shrink ibdata and how to write a cleanup job for puppet-dashboard. 1. If you are not sure…

Puppet

Puppet Dashboard command line tasks

laurent13 years ago13 years ago02 mins

We run a quite early version of puppet-dashboard (version 1.1.0). In the dashboard I have the possibility to delete nodes, create nodes, create classes and groups… As a system engineer I want to be able to do the tasks on the command line. So I researched a little and found that if you “cd” into…

Bitdefender 2012 free for Linux Mint 12

laurent13 years ago13 years ago03 mins

Today I was searching anti virus software for Linux and I came across Bitdefender. Surprisingly Bitdefender gives away free licenses for home use. Here are the steps to install Bitdefender on Mint 12: 1. Go to their website http://download.bitdefender.com/SMB/Workstation_Security_and_Management/BitDefender_Antivirus_Scanner_for_Unices/Unix/Current/EN_FR_BR_RO/Linux/ and download the file BitDefender-Antivirus-Scanner-7.6-4.linux-gcc4x.i586.deb.run 2. Set the correct permission for BitDefender-Antivirus-Scanner-7.6-4.linux-gcc4x.i586.deb.run # chmod +x BitDefender-Antivirus-Scanner-7.6-4.linux-gcc4x.i586.deb.run…

Howto extend lvm for a KVM guest

laurent14 years ago02 mins

Howto Resize KVM lvm guest image Here is how you add 5 GB of disk space to your guest: 1a. # qemu-img create -f raw temp.img 5G 2.a # cat oldimage.img temp.img > newdiskimage.img Sometimes you don’t have enough space to create a complete new image. If thats the case you can use this 1.b…

DD-WRT (linksys e3000) + gpxe + ISCSI (NS4600) + RHEL6

laurent14 years ago04 mins

The goal of this post is to install a RHEL6 Server onto an ISCSI san disk and let it boot via gxpe. 1. Create an ISCSI disk on NS4600 Log in to the Promise Array Storage Manager (PASM). Go to Administrator and enter the Main Menu. Click on RAID MANAGMENT and select iSCSI MANAGMENT. You will need…

RHEL6 SELinux cheat sheet

admin14 years ago08 mins

Lot of admin turn SELinux off because it looks complicated. Here is a cheat sheet to make your life easier Two important documentations about Selinux can be found here: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Security-Enhanced_Linux/index.html http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Managing_Confined_Services/index.html —————————————————————————– If you work on Centos or Redhat, install the following packages on your system: setroubleshoot.noarch : Helps troubleshoot SELinux problems setroubleshoot-plugins.noarch : Analysis…

RHEL6 openldap server

laurent14 years ago12 years ago06 mins

Please note that all double quote characters in this example are plain ASCII ” characters not typographical ones! Step 1: first we need to install the required packages: #yum install openldap-servers migrationtools Step2: As the configuration for LDAP is stored inside the LDAP server itself the configuration has to be done by editing LDIF files…

RHEL6 virsh console domain

laurent14 years ago01 mins

To use the #virsh console command on a RHEL6 Virtual Server you need to configure the guests. If you do not configure them, this Escape character is ^] Is all you get. For RHEL6 clients you have to configure 2 files: /boot/grub/menu.lst add the modification in bold: default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz serial –unit=0 –speed=115200 terminal –timeout=10…

RHEL6 vsftp anonymous access selinux

laurent14 years ago02 mins

First install the vsftpd package #yum install vsftpd after that edit the /etc/vsftpd/vsftpd.conf anonymous_enable=YES write_enable=YES local_umask=022 anon_upload_enable=YES anon_mkdir_write_enable=YES anon_other_write_enable=YES dirmessage_enable=YES xferlog_enable=YES connect_from_port_20=YES xferlog_file=/var/log/vsftpd.log xferlog_std_format=YES ftpd_banner=Welcome to blah FTP service. listen=YES local_root=/var/ftp/upload pam_service_name=vsftpd userlist_enable=YES tcp_wrappers=YES then edit tcpwrappers /etc/hosts.allow vsftpd: ALL Lets set the iptables: #iptables -A INPUT -m state –state NEW -m tcp -p tcp…