Testing on an unused compute node, I tested upgrading to RockyLinux 8.5.

I’m running Cloudstack 4.15.0.0.

Trying to bring up cloudstack agent, I’m seeing some issues communicating with 
libvirt:

2021-12-12 21:25:03,992 INFO [kvm.storage.LibvirtStorageAdaptor] 
(Agent-Handler-1:null) (logid:) Attempting to create storage pool 
d1b1e853-1c30-473d-badc-6c30318aa5b0 (Filesystem) in libvirt
2021-12-12 21:25:03,997 ERROR [kvm.resource.LibvirtConnection] 
(Agent-Handler-1:null) (logid:) Connection with libvirtd is broken: invalid 
connection pointer in virConnectGetVersion
2021-12-12 21:25:04,000 INFO [kvm.storage.LibvirtStorageAdaptor] 
(Agent-Handler-1:null) (logid:) Found existing defined storage pool 
d1b1e853-1c30-473d-badc-6c30318aa5b0, using it.

Dec 12 21:24:13 cm02 libvirtd[269244]: End of file while reading data: 
Input/output error
Dec 12 21:24:13 cm02 libvirtd[269244]: End of file while reading data: 
Input/output error
Dec 12 21:24:26 cm02 libvirtd[269244]: End of file while reading data: 
Input/output error
Dec 12 21:24:26 cm02 libvirtd[269244]: End of file while reading data: 
Input/output error
Dec 12 21:24:26 cm02 libvirtd[269244]: Cannot recv data: Input/output error

Libvirt version is: libvirt-6.0.0-37.module+el8.5.0+670+c4aa478c.x86_64

Functional hosts that have yet to be upgraded are using:

libvirt-6.0.0-35.module_el8.4.0+783+f8734d30.x86_64

My libvirtd.conf looks like this:

listen_tcp=0
listen_tls=1
tcp_port="16509"
auth_tcp="none"
mdns_adv = 0
key_file="/etc/pki/libvirt/private/serverkey.pem"
cert_file="/etc/pki/libvirt/servercert.pem"
ca_file="/etc/pki/CA/cacert.pem"
tls_port="16514"
auth_tls=“none"

2021-12-12 21:43:42,841 ERROR [kvm.resource.LibvirtComputingResource] 
(main:null) (logid:) uefi properties file not found due to: Unable to find file 
uefi.properties.
2021-12-12 21:43:42,901 INFO [kvm.resource.LibvirtConnection] (main:null) 
(logid:) No existing libvirtd connection found. Opening a new one
2021-12-12 21:43:43,127 INFO [kvm.resource.LibvirtComputingResource] 
(main:null) (logid:) No libvirt.vif.driver specified. Defaults to 
BridgeVifDriver.
2021-12-12 21:43:43,296 INFO [kvm.resource.LibvirtComputingResource] 
(main:null) (logid:) iscsi session clean up is disabled
2021-12-12 21:43:43,312 INFO [cloud.agent.Agent] (main:null) (logid:) Agent [id 
= 0 : type = LibvirtComputingResource : zone = 1 : pod = 1 : workers = 5 : host 
= 192.168.30.59 : port = 8250
2021-12-12 21:43:43,321 INFO [utils.nio.NioClient] (main:null) (logid:) 
Connecting to 192.168.30.59:8250
2021-12-12 21:43:43,325 INFO [utils.nio.Link] (main:null) (logid:) Conf file 
found: /etc/cloudstack/agent/agent.properties
2021-12-12 21:43:43,840 INFO [utils.nio.NioClient] (main:null) (logid:) SSL: 
Handshake done
2021-12-12 21:43:43,840 INFO [utils.nio.NioClient] (main:null) (logid:) 
Connected to 192.168.30.59:8250
2021-12-12 21:43:43,925 INFO [kvm.storage.LibvirtStorageAdaptor] 
(Agent-Handler-1:null) (logid:) Attempting to create storage pool 
18796842-a137-475d-9799-9874240e3c0c (Filesystem) in libvirt
2021-12-12 21:43:43,929 ERROR [kvm.resource.LibvirtConnection] 
(Agent-Handler-1:null) (logid:) Connection with libvirtd is broken: invalid 
connection pointer in virConnectGetVersion
2021-12-12 21:43:43,932 INFO [kvm.storage.LibvirtStorageAdaptor] 
(Agent-Handler-1:null) (logid:) Found existing defined storage pool 
18796842-a137-475d-9799-9874240e3c0c, using it.
2021-12-12 21:43:43,933 INFO [kvm.storage.LibvirtStorageAdaptor] 
(Agent-Handler-1:null) (logid:) Trying to fetch storage pool 
18796842-a137-475d-9799-9874240e3c0c from libvirt
2021-12-12 21:43:43,985 INFO [cloud.serializer.GsonHelper] 
(Agent-Handler-1:null) (logid:) Default Builder inited.
2021-12-12 21:43:44,020 INFO [cloud.agent.Agent] (Agent-Handler-2:null) 
(logid:) Proccess agent startup answer, agent id = 0
2021-12-12 21:43:44,022 INFO [cloud.agent.Agent] (Agent-Handler-2:null) 
(logid:) Set agent id 0
2021-12-12 21:43:44,028 INFO [cloud.agent.Agent] (Agent-Handler-2:null) 
(logid:) Startup Response Received: agent id = 0
2021-12-12 21:43:44,031 INFO [cloud.agent.Agent] (AgentShutdownThread:null) 
(logid:) Stopping the agent: Reason = sig.kill
2021-12-12 21:43:55,682 INFO [cloud.agent.AgentShell] (main:null) (logid:) 
Agent started
2021-12-12 21:43:55,688 INFO [cloud.agent.AgentShell] (main:null) (logid:) 
Implementation Version is 4.15.0.0
2021-12-12 21:43:55,690 INFO [cloud.agent.AgentShell] (main:null) (logid:) 
agent.properties found at /etc/cloudstack/agent/agent.properties
2021-12-12 21:43:55,709 INFO [cloud.agent.AgentShell] (main:null) (logid:) 
Defaulting to using properties file for storage
2021-12-12 21:43:55,711 INFO [cloud.agent.AgentShell] (main:null) (logid:) 
Defaulting to the constant time backoff algorithm
2021-12-12 21:43:55,714 INFO [cloud.utils.LogUtils] (main:null) (logid:) log4j 
configuration found at /etc/cloudstack/agent/log4j-cloud.xml
2021-12-12 21:43:55,728 INFO [cloud.agent.AgentShell] (main:null) (logid:) 
Using default Java settings for IPv6 preference for agent connection
2021-12-12 21:43:55,840 INFO [cloud.agent.Agent] (main:null) (logid:) id is 0
2021-12-12 21:43:55,853 ERROR [kvm.resource.LibvirtComputingResource] 
(main:null) (logid:) uefi properties file not found due to: Unable to find file 
uefi.properties.
2021-12-12 21:43:55,909 INFO [kvm.resource.LibvirtConnection] (main:null) 
(logid:) No existing libvirtd connection found. Opening a new one
2021-12-12 21:43:56,145 INFO [kvm.resource.LibvirtComputingResource] 
(main:null) (logid:) No libvirt.vif.driver specified. Defaults to 
BridgeVifDriver.
2021-12-12 21:43:56,307 INFO [kvm.resource.LibvirtComputingResource] 
(main:null) (logid:) iscsi session clean up is disabled
2021-12-12 21:43:56,322 INFO [cloud.agent.Agent] (main:null) (logid:) Agent [id 
= 0 : type = LibvirtComputingResource : zone = 1 : pod = 1 : workers = 5 : host 
= 192.168.30.59 : port = 8250
2021-12-12 21:43:56,331 INFO [utils.nio.NioClient] (main:null) (logid:) 
Connecting to 192.168.30.59:8250
2021-12-12 21:43:56,335 INFO [utils.nio.Link] (main:null) (logid:) Conf file 
found: /etc/cloudstack/agent/agent.properties
2021-12-12 21:43:56,843 INFO [utils.nio.NioClient] (main:null) (logid:) SSL: 
Handshake done
2021-12-12 21:43:56,843 INFO [utils.nio.NioClient] (main:null) (logid:) 
Connected to 192.168.30.59:8250
2021-12-12 21:43:56,941 INFO [kvm.storage.LibvirtStorageAdaptor] 
(Agent-Handler-1:null) (logid:) Attempting to create storage pool 
18796842-a137-475d-9799-9874240e3c0c (Filesystem) in libvirt
2021-12-12 21:43:56,945 ERROR [kvm.resource.LibvirtConnection] 
(Agent-Handler-1:null) (logid:) Connection with libvirtd is broken: invalid 
connection pointer in virConnectGetVersion
2021-12-12 21:43:56,948 INFO [kvm.storage.LibvirtStorageAdaptor] 
(Agent-Handler-1:null) (logid:) Found existing defined storage pool 
18796842-a137-475d-9799-9874240e3c0c, using it.
2021-12-12 21:43:56,948 INFO [kvm.storage.LibvirtStorageAdaptor] 
(Agent-Handler-1:null) (logid:) Trying to fetch storage pool 
18796842-a137-475d-9799-9874240e3c0c from libvirt
2021-12-12 21:43:56,998 INFO [cloud.serializer.GsonHelper] 
(Agent-Handler-1:null) (logid:) Default Builder inited.
2021-12-12 21:43:57,031 INFO [cloud.agent.Agent] (Agent-Handler-2:null) 
(logid:) Proccess agent startup answer, agent id = 0
2021-12-12 21:43:57,033 INFO [cloud.agent.Agent] (AgentShutdownThread:null) 
(logid:) Stopping the agent: Reason = sig.kill
2021-12-12 21:43:57,033 INFO [cloud.agent.Agent] (Agent-Handler-2:null) 
(logid:) Set agent id 0
2021-12-12 21:43:57,040 INFO [cloud.agent.Agent] (Agent-Handler-2:null) 
(logid:) Startup Response Received: agent id = 0

Any ideas? I’m working toward upgrading the entire cluster along with 
Cloudstack itself.

-jeremy

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