Just updated 1 pool with 3 hosts.
SNMP did not work anymore, config file was not changed.
Got the following error: Authorization Error (SNMP error # 16)
Did a yum downgrade net-snmp*

From:

• net-snmp.x86_64 1:5.9.3-8.1.xcpng8.3
• net-snmp-agent-libs.x86_64 1:5.9.3-8.1.xcpng8.3
• net-snmp-libs.x86_64 1:5.9.3-8.1.xcpng8.3

To:

• net-snmp.x86_64 1:5.7.2-52.1.xcpng8.3
• net-snmp-agent-libs.x86_64 1:5.7.2-52.1.xcpng8.3
• net-snmp-libs.x86_64 1:5.7.2-52.1.xcpng8.3

After a service restart, SNMP worked immediately.

@semarie Hi,

Thanks for your help, I just created the user with the net-snmp-create-v3-user command, and definded SHA-256.

SNMP now works like before.

net-snmp-create-v3-user -ro -A verrysecureauthenticationpassword-a SHA-256 -X verrysecureprivacypassword--x AES snmpusername

@olivierlambert In my understanding, Anti affinity tags only looks for the tags that are attached to the VM.
For example:

Datacenter 1
Host 1
VM1-1
Host 2
VM1-2

Datacenter 2
Host 3
VM2-1
Host 4
VM2-2

VM1-1 and VM1-2 should be able to migrate to Host 1 and Host 2.
VM2-1 and VM2-2 should be able to migrate to Host 3 and Host 4.

But VM1-1 and VM1-2 should never be able to migrate to Host 3 and Host 4.
VM2-1 and VM2-2 should never be able to migrate to Host 1 and Host 2.

With the current (Anti) Affinity tags, it will only look to the tags attached to the VM, so in the example it would be possible for VM1-1 to go to Host 4, if VM2-2 would be at Host 3 together with VM2-1.
But if we could tag the hosts, it would not be possible for VM1-1 and VM1-2 to be on Host 3 and Host 4

+1 this.

We would like to run certain VM's only in certain datacenters, but allow the VM to migrate to other hosts in the same datacenter.

@semarie Hi,

Thanks for your help, I just created the user with the net-snmp-create-v3-user command, and definded SHA-256.

SNMP now works like before.

net-snmp-create-v3-user -ro -A verrysecureauthenticationpassword-a SHA-256 -X verrysecureprivacypassword--x AES snmpusername

@semarie Hi,

We are using SNMPv3 with SHA AES

Just updated 1 pool with 3 hosts.
SNMP did not work anymore, config file was not changed.
Got the following error: Authorization Error (SNMP error # 16)
Did a yum downgrade net-snmp*

From:

• net-snmp.x86_64 1:5.9.3-8.1.xcpng8.3
• net-snmp-agent-libs.x86_64 1:5.9.3-8.1.xcpng8.3
• net-snmp-libs.x86_64 1:5.9.3-8.1.xcpng8.3

To:

• net-snmp.x86_64 1:5.7.2-52.1.xcpng8.3
• net-snmp-agent-libs.x86_64 1:5.7.2-52.1.xcpng8.3
• net-snmp-libs.x86_64 1:5.7.2-52.1.xcpng8.3

After a service restart, SNMP worked immediately.