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Kevin Mershon

Installing XenServer Tools on Ubuntu 10.04 - 0 views

www.jansipke.nl/enserver-tools-on-ubuntu-10-04

XenServer Ubuntu 10.04 paravirtualization mode PV XenTools

shared by Kevin Mershon on 12 Apr 12 - Cached
  • Create a VM from the Other install media template
  • Attach the Ubuntu 10.04 ISO to the DVD drive of the VM
  • Start the VM
  • ...19 more annotations...
  • At the disk partitioning stage make sure to replace Ext4 with Ext3, or create a specific boot partition with Ext3
  • Select at least the OpenSSH server package to be able to log in to the VM remotely
  • Finish installation and boot the VM
  • Connect to the VM using SSH
  • sudo cp /etc/init/tty1.conf /etc/init/hvc0.conf sudo vi /etc/init/hvc0.conf
  • Replace all occurrences of tty1 with hvc0
  • Read /boot/grub/grub.cfg
  • Copy the contents of menuentry near the bottom to a temporary text file, to be used as input for the makepv.sh script that we will use later on menuentry 'Ubuntu, with Linux 2.6.32-21-server' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set 02899ea9-1876-4e7b-8ef8-2b09b598cedb linux /boot/vmlinuz-2.6.32-21-server root=UUID=02899ea9-1876-4e7b-8ef8-2b09b598cedb ro quiet initrd /boot/initrd.img-2.6.32-21-server }
  • Make special note of /boot/vmlinuz…, root=UUID=… and /boot/initrd.img…
  • Shutdown the VM
  • Connect to the XenServer host with SSH
  • Run the makepv.sh script, replacing my-vm-name with the actual name of your VM
  • Boot the VM and log in with SSH
  • In XenCenter, attach xs-tools.iso to the DVD drive of the VM
  • sudo mount /dev/cdrom1 /mnt sudo dpkg -i /mnt/Linux/xe-guest-utilities_5.5.0-466_amd64.deb sudo umount /mnt
  • In XenCenter, detach xs-tools.iso from the DVD drive of the VM (this ensures that XenServer does not complain about too many bootable devices)
  • Reboot the VM and log in with SSH
  • sudo update-rc.d -f xe-linux-distribution remove sudo update-rc.d xe-linux-distribution defaults
  • Reboot the VM for the last time
Kevin Mershon

pjwelsh's mostly geek musings: Linux RHEL/CentOS 5.5 PHP 5.3 upgrade made easy - 0 views

pjwelsh.blogspot.com/...os-55-php-53-upgrade-made.html

centos php 5.3 install upgrade without uninstall php-common

shared by Kevin Mershon on 12 Apr 12 - No Cached
Kevin Mershon

wget - Linux Command - Unix Command - 0 views

linux.about.com/...blcmdl1_wget.htm

wget mirror no parent domain recursive

shared by Kevin Mershon on 12 Apr 12 - Cached
Kevin Mershon

Citrix Forums: Centos 6 - 0 views

forums.citrix.com/thread.jspa

centos 6.0 xentools xenserver xen server rpm yum

shared by Kevin Mershon on 12 Apr 12 - No Cached
  • Kevin Mershon on 12 Apr 12
     
    mount /dev/xvdd /mnt rpm -Uhv /mnt/Linux/xe*x86_64.rpm umount -fl /dev/xvdd
Kevin Mershon

Firewall blocking NFS even though ports are open - 0 views

www.linuxquestions.org/...n-though-ports-are-open-294069

nfs port firewall iptables blocked opensuse centos linux

shared by Kevin Mershon on 12 Apr 12 - No Cached
  • 1. Create the file "/etc/sysconfig/nfs" and add the following contents: STATD_PORT=4001 LOCKD_TCPPORT=4002 LOCKD_UDPPORT=4002 MOUNTD_PORT=4003 2. Append the following to the file "/etc/services": rquotad 4004/tcp # rpc.rquotad tcp port rquotad 4004/udp # rpc.rquotad udp port 3. Restart the nfs services:
  • Open up the following ports (tcp and udp) on the Fedora firewall. Do this either using the "Security Level" app in "System Settings" or using the command line iptables command (think it's in /sbin/): 111:tcp, 111:udp, 2049:tcp, 2049:udp, 4001:tcp, 4001:udp, 4002:tcp, 4002:udp, 4003:tcp, 4003:udp, 4004:tcp, 4004:udp
  • edit Code: /etc/sysconfig/nfs uncomment the default ports: Code: LOCKD_TCPPORT=32803 LOCKD_UDPPORT=32769 MOUNTD_PORT=892 STATD_PORT=662 Add those ports to your firewall rules: edit Code: /etc/sysconfig/iptables Code: # NFS -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 111 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 111 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 662 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 662 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 892 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 892 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 2049 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 2049 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 32803 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 32803 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 32769 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 32769 -j ACCEPT Restart the services: Code: /etc/init.d/iptables restart /etc/init.d/nfs restart /etc/init.d/nfslock restart
Kevin Mershon

ssh-keygen - Linux Command - Unix Command - 0 views

linux.about.com/...blcmdl1_ssh-keygen.htm

ssh public key rsa export extract

shared by Kevin Mershon on 12 Apr 12 - No Cached
  • -e This option will read a private or public OpenSSH key file and print the key in a `SECSH Public Key File Format' to stdout. This option allows exporting keys for use by several commercial SSH implementations.
  • -e This option will read a private or public OpenSSH key file and print the key in a `SECSH Public Key File Format' to stdout. This option allows exporting keys for use by several commercial SSH implementations.
  • Kevin Mershon on 12 Apr 12
     
    "-e This option will read a private or public OpenSSH key file and print the key in a `SECSH Public Key File Format' to stdout. This option allows exporting keys for use by several commercial SSH implementations. "
Kevin Mershon

package-cleanup(1) - Linux man page - 0 views

linux.die.net/...package-cleanup

yum fedora remove old kernels package cleanup

shared by Kevin Mershon on 12 Apr 12 - No Cached
  • --oldkernels Remove old kernel and kernel-devel packages.
  • Kevin Mershon on 12 Apr 12
     
    "--oldkernels Remove old kernel and kernel-devel packages."
Kevin Mershon

How to remount root filesystem - 0 views

ubuntuforums.org/showthread.php

linux root filesystem remount

shared by Kevin Mershon on 12 Apr 12 - No Cached
  • sudo mount -o remount,rw /
Kevin Mershon

How to fix VM "pending" state on XenServer - 0 views

balld31.blogspot.com/...ending-state-on-xenserver.html

XenServer linux vm pending frozen

shared by Kevin Mershon on 12 Apr 12 - No Cached
  • xe task-list to view the Pending tasks
  • xe task-cancel force=true uuid=<UUID> to cancel a specific task
Kevin Mershon

Disable kernel's irq balance feature - 0 views

bbs.archlinux.org/viewtopic.php

XenServer linux heavy I_O hang

shared by Kevin Mershon on 12 Apr 12 - No Cached
  • Add 'noirqbalance' (w/o the quotes) to your kernel cmd-line.
  • kernel /boot/vmlinuz26 root=/dev/disk/by-uuid/241459a4-d4b5-42cf-a30f-4c6bc0120d1d resume=/dev/sda5 ro vga=792 noirqbalance quiet
Kevin Mershon

Monit: Monitor SSHD Server and Auto Restart SSH If It Does Not Respond - 0 views

www.cyberciti.biz/...onit-sshd-server-configuration

monit linux process monitor sshd

shared by Kevin Mershon on 12 Apr 12 - Cached
  • /etc/monit/monitrc
  • check process sshd with pidfile /var/run/sshd.pid start program "/etc/init.d/ssh start" stop program "/etc/init.d/ssh stop" if failed port 22 protocol ssh then restart
Kevin Mershon

MySQL database on Linux Tutorial - 0 views

www.yolinux.com/...LinuxTutorialMySQL.html

ubuntu mysql initdb install_db reinstall database

shared by Kevin Mershon on 12 Apr 12 - Cached
  • One may manually initialize the database with the command: /usr/bin/mysql_install_db Creates system tables in /var/lib/mysql/mysql/ Only execute the first time MySQL is installed. Databases located in: /var/lib/mysql/
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