CloudStack provides APIs using which a public IP can be acquired and assigned to virtual machines. A CloudStack admin, domain admin or a user can use CloudMonkey CLI to do the following steps:
- First, use the associateIpAddress API Acquires and associates a public IP to an account
- Then use the enableStaticNat API to enable Static NAT for the given address
In the below example, 192.168.64.106 is being acquired and associated with the IP address 10.1.1.97.
Continue reading “Assign Static NAT IP Address Using CloudStack API”
The CloudStack management server is a Java application which runs inside the Tomcat container. The default install configures the management Web UI service to listen on HTTP port 8080 on the primary interface.
It is a good practice to secure access to the CloudStack UI using SSL and can be done in more than one way…
- Enable SSL options in Tomcat container itself
- Use a reverse HTTP proxy server which supports SSL termination like Apache HTTP Server (with mod_proxy), Nginx or Apache Traffic Server
In this post, I will describe how to use the Apache HTTP server as a reverse proxy with SSL termination on CentOS.
Continue reading “Securing CloudStack Management UI With Apache SSL”
Adding new volumes to an Ubuntu Lucid guest instance running under KVM hypervisor seems to not work automatically. The newly attached device is visible to the Ubuntu guest OS only after a reboot.
To replicate the issue…
- Create a Ubuntu Lucid guest instance on KVM
- Create a new data disk
- Attach the new data disk to the Ubuntu guest OS
- Run fdisk -l /dev/vdb on the Ubuntu KVM Guest OS. No disks found
shanu@ubuntu3:~$ sudo fdisk -l /dev/vdb|wc -l
- Reboot and run fdisk again. Disk is now available as /dev/vdb
shanu@ubuntu3:~$ sudo fdisk -l /dev/vdb
Disk /dev/vdb: 5368 MB, 5368709120 bytes
16 heads, 63 sectors/track, 10402 cylinders, total 10485760 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/vdb doesn't contain a valid partition table
The tests were performed on Apache CloudStack 4.2.0+CentOS 6.5 KVM hypervisor hosts and Ubuntu 12.04 Lucid as guest operating system.
The same steps work correctly on XenServer guest operating systems (tested on Ubuntu,Linux and FreeBSD) and CentOS guest on KVM. Since its working automatically without a reboot in CentOS/KVM, it didn’t seem to be a CloudStack issue per-se.
Continue reading “CloudStack Attach Volumes On Ubuntu Not Working on KVM”