Zerto Prometheus Exporter

A Python-based Prometheus exporter that scrapes the Zerto ZVM Appliance (ZVMA) REST API and exposes metrics for Prometheus scraping and Grafana visualization.

Compatibility

Component	Supported Versions
Zerto	ZVM Appliance (ZVMA) 10.x
vCenter / vSphere	7.x, 8.x, 9.x (VCF 9)
pyvmomi	9.0.0.0
Prometheus	Any current release
Grafana	Any current release

Note: This exporter targets the ZVMA API (Keycloak-based authentication). It is not compatible with the legacy Windows-based ZVM.

pyvmomi and vSphere 9: pyvmomi 9.0.0.0 supports vSphere 9.0 and maintains backward compatibility with the previous four vSphere releases (8.0, 8.0U1, 8.0U2, 8.0U3). Note that Broadcom has announced pyvmomi 9.0.0.0 is the last standalone release — future versions will be distributed as part of the unified VCF Python SDK. This exporter will be updated accordingly when that becomes necessary.

Quick Start

Docker Hub (recommended)

docker run -d \
  -p 9999:9999 \
  -e ZVM_HOST=<zvm-ip-or-hostname> \
  -e ZVM_USERNAME=admin \
  -e ZVM_PASSWORD=<password> \
  -e VCENTER_HOST=<vcenter-ip-or-hostname> \
  -e VCENTER_USER=administrator@vsphere.local \
  -e VCENTER_PASSWORD=<password> \
  recklessop/zerto-exporter:stable

Docker Compose

Clone the repo and edit docker-compose.yml with your environment values, then:

git clone https://github.com/recklessop/Zerto_Exporter.git
cd Zerto_Exporter
docker-compose up -d

Build from source

git clone https://github.com/recklessop/Zerto_Exporter.git
cd Zerto_Exporter
docker build -t zerto-exporter .
docker run -d -p 9999:9999 -e ZVM_HOST=... zerto-exporter

Docker Image Tags

Tag	Description
stable	Latest stable release — recommended for production
latest	Same as stable, updated on every master merge
3.1.0, 3.0.0, etc.	Pinned semantic versions

Configuration

All configuration is via environment variables:

Variable	Required	Default	Description
ZVM_HOST	Yes	—	IP or hostname of the ZVMA
ZVM_PORT	No	443	ZVMA API port
ZVM_USERNAME	No	admin	ZVMA local username
ZVM_PASSWORD	Yes	—	ZVMA password
CLIENT_ID	No	zerto-client	OAuth client ID (for client credentials auth)
CLIENT_SECRET	No	—	OAuth client secret (alternative to username/password)
VCENTER_HOST	No	—	vCenter IP or hostname — required for VRA CPU/memory metrics
VCENTER_USER	No	administrator@vsphere.local	vCenter username
VCENTER_PASSWORD	No	—	vCenter password
VERIFY_SSL	No	False	Set to True to enforce SSL certificate verification
LISTEN_PORT	No	9999	Port the metrics HTTP server listens on
SCRAPE_SPEED	No	30	Seconds between API scrape cycles
API_TIMEOUT	No	5	HTTP request timeout in seconds
LOGLEVEL	No	INFO	Log verbosity: DEBUG, INFO, WARNING, ERROR, CRITICAL
DISABLE_STATS	No	FALSE	Set to TRUE to disable the encryption/IO stats thread

Prometheus Configuration

Add the following to your prometheus.yml:

scrape_configs:
  - job_name: zerto-exporter
    metrics_path: /metrics
    static_configs:
      - targets: ['<exporter-host>:9999']

Metrics Reference

Metrics are served at http://<host>:9999/metrics.

VM Protection Metrics

Scraped every SCRAPE_SPEED seconds from the ZVM /v1/vms API.

Labels: VmIdentifier, VmName, VmSourceVRA, VmRecoveryVRA, VmPriority, SiteIdentifier, VpgName, SiteName

Metric	Description
vm_actualrpo	Current RPO in seconds
vm_throughput_in_mb	Replication throughput in MB/s
vm_iops	Replication IOPs
vm_outgoing_bandwidth_in_mbps	Outgoing WAN bandwidth in Mbps
vm_used_storage_in_MB	Used storage in MB
vm_provisioned_storage_in_MB	Provisioned storage in MB
vm_journal_used_storage_mb	Journal used storage in MB
vm_journal_hard_limit	Journal hard limit value
vm_journal_warning_limit	Journal warning threshold value
vm_status	VM protection status (numeric)
vm_substatus	VM protection sub-status (numeric)

VRA label behaviour:

• VmSourceVRA — the VRA on the protected (source) side, e.g. Z-VRA-192.168.50.21
• VmRecoveryVRA — the VRA on the recovery side for local-to-local VPGs, e.g. Z-VRA-192.168.50.22; empty string for cloud targets (Azure, AWS) since there is no local VRA on the recovery side

VM IO / Encryption Stats Metrics

Scraped every SCRAPE_SPEED seconds from the ZVM /v1/vms/statistics and encryption APIs. Reported as deltas (rate of change between scrape cycles).

Labels: VpgIdentifier, VmIdentifier, VmName, SiteIdentifier, SiteName

Metric	Description
vm_IoOperationsCounter	IO operations delta
vm_WriteCounterInMBs	Write counter delta in MB
vm_SyncCounterInMBs	Sync counter delta in MB
vm_NetworkTrafficCounterInMBs	Network traffic delta in MB
vm_EncryptedDataInLBs	Encrypted data delta in logical blocks
vm_UnencryptedDataInLBs	Unencrypted data delta in logical blocks
vm_TotalDataInLBs	Total data delta in logical blocks
vm_PercentEncrypted	Percentage of data that is encrypted
vm_TrendChangeLevel	Encryption trend change level

VPG Metrics

Labels: VpgIdentifier, VpgName, VpgPriority, SiteIdentifier, SiteName

Metric	Description
vpg_actual_rpo	VPG actual RPO in seconds
vpg_throughput_in_mb	VPG replication throughput in MB/s
vpg_iops	VPG replication IOPs
vpg_storage_used_in_mb	VPG used storage in MB
vpg_provisioned_storage_in_mb	VPG provisioned storage in MB
vpg_vms_count	Number of VMs in the VPG
vpg_configured_rpo	Configured RPO target in seconds
vpg_actual_history	Actual journal history in minutes
vpg_configured_history	Configured journal history in minutes
vpg_failsafe_actual	Actual failsafe history in minutes
vpg_failsafe_configured	Configured failsafe history in minutes
vpg_status	VPG status (numeric)
vpg_substatus	VPG sub-status (numeric)
vpg_alert_status	VPG alert status (numeric)

VRA Metrics

Scraped every SCRAPE_SPEED * 2 seconds. CPU and memory usage require VCENTER_HOST to be configured.

Labels: VraIdentifierStr, VraName, VraVersion, HostVersion, SiteIdentifier, SiteName

Metric	Description
vra_memory_in_GB	Configured VRA memory in GB
vra_vcpu_count	Configured VRA vCPU count
vra_protected_vms	Number of VMs protected by this VRA
vra_protected_vpgs	Number of VPGs protected by this VRA
vra_protected_volumes	Number of volumes protected by this VRA
vra_recovery_vms	Number of VMs recovering to this VRA
vra_recovery_vpgs	Number of VPGs recovering to this VRA
vra_recovery_volumes	Number of volumes recovering to this VRA
vra_self_protected_vpgs	Number of self-protected VPGs
vra_cpu_usage_mhz	VRA VM CPU usage in MHz (requires vCenter)
vra_memory_usage_mb	VRA VM memory usage in MB (requires vCenter)

Volume Metrics

Labels: ProtectedVm, ProtectedVmIdentifier, OwningVRA, VpgName, SiteIdentifier, SiteName

Metric	Description
scratch_volume_size_in_bytes	Total scratch volume size in bytes
vm_journal_volume_size_in_bytes	Journal volume used size in bytes
vm_journal_volume_provisioned_in_bytes	Journal volume provisioned size in bytes
vm_journal_volume_count	Number of journal volumes

Datastore Metrics

Labels: datastoreIdentifier, DatastoreName, SiteIdentifier, SiteName

Metric	Description
datastore_vras	Number of VRAs on this datastore
datastore_incoming_vms	Number of incoming (recovery) VMs
datastore_outgoing_vms	Number of outgoing (protected) VMs
datastore_capacity_in_bytes	Total datastore capacity
datastore_free_in_bytes	Free space
datastore_used_in_bytes	Used space
datastore_provisioned_in_bytes	Provisioned space
datastore_usage_zerto_protected_*	Zerto protected volume usage
datastore_usage_zerto_recovery_*	Zerto recovery volume usage
datastore_usage_zerto_journal_*	Zerto journal volume usage
datastore_usage_zerto_scratch_*	Zerto scratch volume usage
datastore_usage_zerto_appliances_*	Zerto appliance volume usage

Exporter Health Metrics

Labels: ExporterInstance

Metric	Description
exporter_uptime	Exporter uptime in minutes
exporter_thread_status	Per-thread health (1=alive, 0=dead); thread label values: DataStats, EncryptionStats, VraMetrics

Changelog

3.1.0

• Added VmSourceVRA label to all VM protection metrics, populated from the VRA on the protected side
• VmRecoveryVRA now resolves to the VRA name (e.g. Z-VRA-192.168.50.21) instead of the raw ESXi host IP
• Cloud-target VPGs (Azure, AWS) correctly emit VmRecoveryVRA="" since there is no local VRA on the recovery side
• Upgraded pyvmomi to 9.0.0.0
• Azure pipeline now publishes {semver}, stable, and latest tags

3.0.0

• Fix duplicate VRA metrics after VRA upgrade
• Fix counter spike/negative values on ZVM reboot
• Removed leaked credentials

Acknowledgements

Huge shout out to hmdhszd for the framework that started this project.