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Chapter 9. Upgrading CloudPlatform to the Latest Version
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listen_tls=0
4. Restart the libvirtd service.
9.10. Upgrading KVM Hosts
If the OS version of the KVM host is RHEL 6.2 and lower, you must upgrade the KVM host OS version
to RHEL 6.3 or higher as follows:
Note
Before you upgrade KVM host OS, ensure that Management Server is not upgraded.
1. If the OS version of the KVM host is RHEL 6.2 and lower, you must upgrade the KVM host OS
version to RHEL 6.3 or higher:
a. From the CloudPlatform Management Server UI, place the host in the maintenance mode.
Note
Before you upgrade KVM host OS, ensure that Management Server is not upgraded.
b. Go to the KVM host and upgrade the host OS based on the steps in Section 9.9, “Upgrading
KVM Host Opearting System ”
c. Start the cloudstack agent:
service cloudstack-agent start
d. Cancel the host maintenance. Make sure that the host is in the Up state.
e. Perform these steps on all the KVM hosts to upgrade their opearting systems to RHEL 6.3 or
higher.
2. If OS version of the KVM host is RHEL 6.3 but with older version of CCP installed, the OS
upgrade is not mandatory.
a. Ensure that Management Server is not upgraded. Then, place the host in maintenance mode
through CloudPlatform UI.
b. Decide whether you want to upgrade the version of RHEL. If you want to upgrade, follow the
steps in Section 9.9, “Upgrading KVM Host Opearting System ”.
c. Remove the existing patched qemu binaries. see Step 1 in Section 9.9, “Upgrading KVM Host
Opearting System ”.
d. Stop and then start the CloudPlatform agent: