CloudStack

CloudStack CentOS Template – Install From ISO

This is a part 1/3 creating CentOS 6.x CloudStack template with the following features:

1. Minimal and fully updated CentOS 6.5 for 32-bit and 64-bit platforms with guest OS tools
2. Root password management using cloudstack-guest-set-passwordscript
3. SSH key management using cloud-init

Register CentOS ISO

1. Login to CloudStack management UI
2. Navigate to ‘Templates’ and select view ‘ISO’ from the drop-down list
3. Click ‘Register ISO’. Use the latest CentOS release ISO, which at this time (as of Jan 2014) is CentOS 6.5
4. Set ‘Name’ and ‘Description’ fields to CentOS-6.5-x86_64-minimal.iso
5. Set the URL to the nearest ISO mirror. I usedhttp://mirror.leapswitch.com/centos/6.5/isos/x86_64/CentOS-6.5-x86_64-minimal.iso for CentOS 6.4 64-bit andhttp://mirror.leapswitch.com/centos/6.5/isos/i386/CentOS-6.5-i386-minimal.iso for the 32-bit version.
6. Check the ‘Bootable’ checkbox
7. Set the OS Type field to ‘CentOS 6.4 (64-bit)’ as CentOS 6.5 is not listed in the drop down list as of CloudStack 4.2.0. Use OS Type ‘CentOS 6.4 (32-bit)’ for the 32-bit ISO
8. Click OK button to start the download
9. CloudStack will now start to download the ISO from the mirror. You can check the status by clicking on the ISO’s name
10. Wait for the ISO download and complete registration successfully. It takes a few minutes depending on the speed of your connection

Once the ISO registration is completed, create a new instance with the ISO

Create CentOS Instance

1. Click on ‘Instances’ and ‘Add Instance’. Select ‘ISO’ button and click‘Next’
2. From the ‘Select A Template’ screen, select ‘CentOS-6.5-x86_64-minimal.iso’ ISO from the ‘My ISOs’ section. Also choose the hypervisor type and click ‘Next’.
3. Select a ‘Compute Offering’ and click ‘Next’. A 1vCPU/512MB offering is what I have used
4. Choose a ‘Data Disk’ offering. I have used a 20GB disk
5. Choose defaults for ‘Affinity’ and ‘Network Offering’
6. Set the instance ‘Name’ from the ‘Review’ screen and ‘Launch VM’. I typically use the format os+version-hypervisor+arch. So CentOS 6.5 64-bit on XenServer becomes ‘centos65-xen64’ for easy identificationIn my environment, I end up with 4 golden instances per OS. So for CentOS 6.5, it’s centos65-xen32, centos65-xen64, centos65-kvm32 andcentos65-kvm64 instances
7. Wait for the instance to start ‘running’. Takes a few seconds depending on the performance of your CloudStack IaaS infrastructure
8. Click on the running instance ‘centos65-xen64’ for additional details

Once the instance is running, connect via the console and complete the installation

Install CentOS

1. Connect via the console. You would have the Anaconda install screen waiting for you to start the installation. Skip the disk check.
2. CentOS Language Selection. I chose ‘English’
3. CentOS keyboard selection. I chose ‘US’ default
4. CentOS detects the 20GB Virt-IO based data disk. Re-Initialize all disks
5. Select the ‘Time Zone’. I choose ‘UTC/GMT’ as default as my hypervisors run on UTC timezone. The end user can always change his timezone as appropriate later
6. Pick a root password. It does not matter what you use here as we will build the template to automatically as a ‘password enabled’ template. Lets use ‘password’ for now.
7. Use the entire 20GB disk vda
8. Write changes to the disk. The installer would now partition and format the disk.
9. Wait for the package installation to complete. Might take a few minutes depending on your infrastructureSince we are using the minimal CentOS install ISO, you wont be prompted for manual package selection
10. Reboot once the install completes
11. Detach the ISO from the instance. You might want to do it very quickly before the OS completes the reboot
12. Reboot the instance with a console ctrl-alt-del if it happens to be stuck in the installer screen (since we detached the ISO)
13. centos65-xen64 would now boot and present you with the login prompt
14. Finally, login as ‘root’

In a minimal CentOS install via the text installer, eth0 is disabled by default. So the first thing to do would be to console login and enable the network interface for eth0 device. Once network is enabled, all other customization tasks would be done over SSH instead of the console.

Enable CentOS Networking

1. Login as root via console
2. Update file /etc/sysconfig/network-scripts/ifcfg-eth0 as below and reboot the instance. I use the vi editor for editing files.

   1 2 3 4 5

   DEVICE=eth0 Type=Ethernet ONBOOT=yes NM_CONTROLLED=no BOOTPROTO=dhcp

   
3. Reboot the instance

   1	[root@localhost ~]# reboot

4. After reboot, the hostname of the instance would have changed fromlocalhost to centos65-xen64 indicating that the networking service is running with DHCP settings.
5. sshd would also be running. Also identify the IP address assigned to eth0. It would match the NIC settings found on the instance’s NIC details page. In this case, eth0 is 10.1.1.38 and matches the CloudStack assigned NIC 1 IP address.
   
   
6. Assign a static SNAT IP to centos65-xen64 to make it reachable from an external network. Also open SSH port from the firewall settings. In this case, the SNAT IP is 192.168.64.106.
   
   
7. Check ICMP Pings and SSH access as root user
   

Our instance is now ready for use.

In the next article, we will customize and add CloudStack specific features to our CentOS template.

SSH Web DJ

Upload files menggunakan sftp

http://kb.masterwebnet.com/beta/index.cgi/read/Upload_files_menggunakan_sftp

MWN merekomendasikan klien untuk selalu menggunakan SFTP (secure FTP/SSH FTP) karena lebih aman dari FTP biasa. Untuk menggunakan SFTP plan hosting anda harus mendukung fitur SSH, seperti plan MWN Bisnis A Spanel ke atas. Untuk pilihan control panel cPanel saat ini belum mendapat fitur SSH.

Berikut langkah-langkah menggunakan SFTP dengan program FileZilla.

• Pertama-tama login ke Spanel anda, lalu akses menu Sunting > Setting Akun
• Pada bagian Shell (Telnet/SSH) pilih Ya, lalu klik Perbarui

• Buka program FileZilla, klik menu File > Site Manager
• Setlah setting di kotak dialog yang tampil sebagai berikut.

* Host: isi dengan IP server atau nama domain, Port: isi 22
* Server type: pilih SFTP
* User: isikan username hosting anda, misal t12345
* Password: isikan password hosting anda

• Setelah itu klik Connect, maka anda akan masuk ke FTP server dalam mode SSH (port 22)