Viewing cluster logs

When you encounter a problem in Virtuozzo Hybrid Infrastructure, you can send a problem report, as described in Getting technical support. The report will gather all the logs needed to troubleshoot the problem and send them to the technical support team.

Alternatively, you can investigate the root cause of your problem by using the logs listed in table below.

Service	Log location	Description
Metadata	/vstorage/mds/logs/mds.log.zst on the storage node hosting an MDS service	Storage metadata service events
Storage	/vstorage/<id>/cs/logs/cs.log.zst on the storage node hosting a CS service To find out the log location of a particular CS on the node, run `vstorage -c <cluster_name> list-services -C`.	Chunk service events
Storage mountpoint	/var/log/vstorage/<cluster_name>/vstorage-mount.*.blog on any storage node	Software-defined storage mounting on each node
Management node	/var/log/vstorage-ui-backend/messages.log and /var/log/vstorage-ui-backend/celery*.log on the management node	Management node and admin panel events
Management node	/var/log/vstorage-ui-agent/* on any storage node	Agent controller component events
Backup Gateway	/var/log/vstorage/abgw.log*zst on any node in the Backup Gateway cluster The latest log is abgw.log.zst, older ones are renamed to abgw.log.0.zst, abgw.log.1.zst, etc.	Backup Gateway cluster deployment and management
iSCSI	/var/log/vstorage/iscsi/vstorage-target.log on any node in an iSCSI target group	iSCSI target management
	/var/log/vstorage/iscsi/vstorage-target-monitor.log on any node in an iSCSI target group	iSCSI target monitoring
	/var/log/vstorage/iscsi/scst.log.zst on any node in an iSCSI target group	SCST service logs
S3	/var/log/ostor/NS-* on the S3 node with NS services	S3 name server events
	/var/log/ostor/OS-* on the S3 node with OS services	S3 object server events
	/var/log/ostor/S3GW-* on the S3 node with GW services	S3 gateway events
	/var/log/nginx/* on any node in the S3 cluster	`nginx` service logs
	/var/log/ostor/GR-* on the S3 node with GR services	S3 geo-replicator service events
NFS	/var/log/ganesha/ganesha.log and /var/log/ostor/ostorfs.log.gz on any node in the NFS cluster	NFS server events
	/var/log/vstorage/vstorage-nfsd.log on any node in the NFS cluster	NFS service events
	/var/log/ostor/FS-* on the node hosting an NFS share	FS service events
	/var/log/ostor/OS-* on the node hosting an NFS share	OS service events
Compute	/var/log/vstorage-ui-backend/ansible.log on the controller node	Compute cluster and add-on deployment
	/var/log/hci/beholder/beholder.log on the controller node	Notifications about all compute events, including VM placement
	/var/log/hci/nova/* on the compute node hosting a VM In case of problems during VM migration, view /var/log/hci/nova/nova-compute.log on the source and destination compute nodes.	Virtual machine management
	/var/log/hci/neutron/neutron-l3-agent.log on any compute node	Virtual routing events
	/var/log/hci/neutron/neutron-openvswitch-agent.log on the compute node hosting a VM	VM network interface management
	/var/log/hci/cinder/* on the controller node	Compute volume management
	/var/log/hci/glance/glance-api.log on the controller node	Image service API requests
	/var/log/hci/octavia/octavia-worker.log and /var/log/hci/octavia/octavia-api.log on the controller node	Load balancing service management
	/var/log/hci/magnum/magnum-conductor.log, /var/log/hci/magnum/magnum-api.log, and /var/log/hci/heat/heat-engine.log on the controller node	Kubernetes service and VM stack deployment and management
	/var/log/hci/gnocchi/* and /var/log/hci/ceilometer/* on any compute node	Billing metering service management
High availability	/var/log/vstorage-ui-backend/ha.log on all management nodes	High availability management
Updates	/var/log/vstorage-ui-backend/software-updates.log on the management node	Software update orchestration
Updates	/var/log/vstorage-ui-agent/software-updates.log on any storage node	Software update downloading and installation on each node

To open log files

Use the following commands:

for LOG files:
```
# less <log_file>.log
```
for BLOG files:
```
# blogcat <log_file>.blog | less
```
for GZ files:
```
# zless <log_file>.gz
```
for ZST files:
```
# zstdless <log_file>.zst
```