Hi guys,

I'm checking in to see if anyone here has seen this behaviour before: when 
installing a fresh kvm hypervisor (Ubuntu 20.04) using CS version 4.16.1 it's a 
roll of the dice whether agent.log will be populated or does not get created at 
all and fails on a class loading failure. This does not happen each time we 
install a host, but it does pop up frequently. journalctl will still return 
part of the log, but it's never written to /var/log/cloudstack/agent/agent.log. 
Has anyone seen this behaviour before and have they found a quick fix? We've 
had to reinstall the affected hosts, which is a waste of resources.

What we see in journalctl: 

systemd[1]: Started CloudStack Agent.
java[8793]: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
java[8793]: SLF4J: Defaulting to no-operation (NOP) logger implementation
java[8793]: SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for 
further details.
sudo[9160]:     root : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/usr/bin/grep 
InitiatorName= /etc/iscsi/initiatorname.iscsi
sudo[9160]: pam_unix(sudo:session): session opened for user root by (uid=0)
sudo[9160]: pam_unix(sudo:session): session closed for user root
java[8793]: libvirt: Domain Config error : invalid connection pointer in 
virConnectGetVersion
java[8793]: libvirt: Storage Driver error : Storage pool not found: no storage 
pool with matching uuid '457f56b3-a4b4-4fb5-88d9-6866a2411233'
java[8793]: SLF4J: Failed to load class "org.slf4j.impl.StaticMDCBinder".
java[8793]: SLF4J: Defaulting to no-operation MDCAdapter implementation.
java[8793]: SLF4J: See http://www.slf4j.org/codes.html#no_static_mdc_binder for 
further details.

Relavent libraries present on a broken and working system share the same 
checksum:
4dde0990b45d1bbba6ee141da8fa9c25  
/usr/share/cloudstack-agent/lib/jcl-over-slf4j-1.7.5.jar
b184ba88bc78cedc2c73ab4da5a4b5a8  
/usr/share/cloudstack-agent/lib/jul-to-slf4j-1.7.5.jar
43f5e20de20e839d305abe1f0b594a7a  
/usr/share/cloudstack-agent/lib/log4j-over-slf4j-1.7.5.jar
3b1ececad9ebc3fbad2953ccf4a070ca  
/usr/share/cloudstack-agent/lib/slf4j-api-1.7.5.jar

Met vriendelijke groet / Kind regards,

Ruben Bosch
CLDIN

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