Advanced System Settings
Reference for all advanced system settings in VergeOS, including NTP, SMART thresholds, session timeouts, MAC prefix, migration controls, two-factor authentication, and vSAN configuration.
These settings can be found under System > Settings > Advanced.
Exercise Caution with Advanced Settings
These settings should only be modified by experienced administrators or under direct guidance from VergeIO technical support. Alterations can significantly impact system behavior and performance. Always:
Fully understand the implications before making changes
Test modifications in a non-production environment first
Document all changes for future reference
Have a rollback plan in place
For detailed information on these settings and their effects, please contact VergeIO support.
Some settings may be empty if not configured.
Auto check for catalog updates
Interval (in hours) at which to automatically scan recipe catalogs for changes.
24
System snapshot profile
Snapshot Profile to use for System snapshots. The "System Snapshots" profile is automatically created during installation. You can modify this included profile or select a different profile here.
System Snapshots
Contact email for processing offline/air-gap license files
Email address used for processing license files in offline or air-gapped environments.
license@verge.io
Day of the month to generate billing report
Specifies the day each month when the system generates billing reports.
1
Default VM drive tier
Sets the default storage tier for new VM drives. Higher tiers typically offer better performance.
4
Default cluster for VMs
Specifies the default cluster where new VMs will be created if not otherwise specified.
Default cluster for VMware Service containers
Designates the default cluster for new VMware Service container deployments.
Default cluster for networks
Sets the default cluster for new network creations.
Default cluster for tenant nodes
Specifies the default cluster for new tenant node allocations.
Default external network MTU
Sets the default Maximum Transmission Unit (MTU) size for external networks.
1500
Default failover cluster for VMs
Designates the secondary cluster for VM failover if the primary cluster becomes unavailable.
Default failover cluster for VMware containers
Specifies the backup cluster for VMware container failover.
Default failover cluster for networks
Sets the secondary cluster for network failover.
Default failover cluster for tenant nodes
Designates the backup cluster for tenant node failover.
Default internal network MTU
Changes the default MTU of all Internal Networks created
9000
Default internal network address
Changes the default network address scheme of all Internal Networks created
192.168.0.0/24
Default media file tier
Sets the default tier of storage used for storage of uploaded files
4
Default tenant network address
Changing default network addressing is typically not recommended. Work closely with VergeOS Support to implement network addressing changes.
100.96.255.0/24
Enable IPv6
IPV6 traffic in/out of the system is blocked by default. This setting does not need to be changed to allow internal VM-to-VM ipv6 traffic.
false
Failed login attempts before an account is locked (0 disables lockout)
Specifies the number of consecutive failed login attempts allowed before an account is temporarily locked. Setting this to 0 disables the lockout feature. Note: VergeOS has built-in protection against brute-force attacks. Enable with caution, as aggressive lockouts can potentially lead to denial-of-service situations.
0
Flush the application framework database every X ms
Do not modify this setting unless expressly directed by VergeIO support
5000
Historical long term stats expire every X second(s)
Defaults for historical stat expiration settings are optimized for 95th-percentile calculations/reporting. The default for long term stat expiration allows more than 30 days to ensure that monthly data will be available.
3888000
Historical short term stats expire every X second(s)
Defaults for historical stat expiration settings are optimized for 95th-percentile calculations
300
List of NTP servers to synchronize time with (space delimited)
time.nist.gov 0.pool.ntp.org 1.pool.ntp.org 2.pool.ntp.org 3.pool.ntp.org
Logon banner header
Sets the header text displayed on the login page banner. Can be used to display organizational or security notices.
Logon banner text
Defines the main text content displayed on the login page banner. Typically used for legal disclaimers, usage policies, or system-specific notices.
MAC address prefix for machine NICs
Default is the Verge.io(aka Yottabyte) OUI IEEE registered Prefix. VergeOS uses this OUI plus a system ID to ensure unique MAC addressing.
F0:DB:30
MSS (Maximal Segment Size) of the core network's default route (set to 1460 for an MTU of 1500)
Do not modify this setting unless expressly directed by VergeIO support
1460
Machine migration power-cycle timeout
Specifies the maximum time (in seconds) the system waits for a non-responsive VM during migration before initiating a power cycle. This helps prevent migration processes from hanging indefinitely.
1800
Machine migration speed throttle (bytes/sec)
Sets the maximum data transfer rate for VM migrations. This helps balance migration speed with network performance for other operations. The default allows for roughly 1 GB/s.
1048576000
Maximum concurrent machine migrations
Limits the number of VM migrations that can occur simultaneously across the cluster. This helps manage resource utilization during migration operations.
1
Maximum concurrent network migrations
Sets the maximum number of network migrations that can run concurrently. This helps control resource usage during network failover or rebalancing operations.
10
Maximum estimated snapshots per profile (0 to disable warning)
Defines the threshold for the number of snapshots in a profile before triggering a warning. This helps manage storage usage and snapshot proliferation. Setting to 0 disables the warning.
200
Maximum number of VXLAN FDB entries (changing this anything other than 0 can result in dropped packets)
Limits the number of entries in the VXLAN Forwarding Database. Changing from 0 (unlimited) may impact network performance and should only be done with caution.
0
Minutes an account is locked for
Specifies the duration (in minutes) that a user account remains locked after exceeding the failed login attempt limit. This helps protect against brute-force attacks.
15
Name of domain for this Cloud
This field provides an override for the otherwise defaulted (extracted from system SSL cert) domain
Name of this Cloud
name to identify this system. This cloud name will appear in the user interface and reports/alerts sent via subscriptions. The Cloud name will also identify the system in sync jobs.
*name set during installation
Override physical network for new tenants (172.17.0.0/24)
Do not modify this setting unless expressly directed by VergeIO support
Password Complexity Requirement
Options include lower case, upper case, number and symbol requirements; minimum length; force password resets(all users); any combination of options can be selected.
length:8
Remote syslog server (tcp: @@ name/ip:port, udp: @ name/ip:port)
specify syslog server for log export
SMART max hours a drive can reach before a warning is set
Sets the maximum operational hours for a drive before triggering a warning. This helps identify aging drives.
43800
SMART max number of current pending sectors a drive can have before a warning is set
Defines the threshold for pending sectors (sectors waiting to be remapped) before issuing a warning. Indicates potential drive issues.
1
SMART max number of offline uncorrectable sectors a drive can have before a warning is set
Specifies the maximum number of sectors that couldn't be read during offline tests before triggering a warning. Suggests serious drive problems.
1
SMART max number of reallocated sectors a drive can have before a warning is set
Sets the limit for reallocated sectors (bad sectors that have been replaced) before warning. Indicates drive degradation.
1
SMART max temperature (celsius) a drive can reach before a warning is set
Defines the maximum temperature a drive can reach before triggering a temperature warning. Helps prevent heat-related failures.
51
SMART max wear (percent) a drive can reach before a warning is set
Specifies the maximum wear level (as a percentage) for SSDs before issuing a warning. Helps track SSD lifespan.
95
SMART value in minutes how often diagnostics run on physical drives
Sets the frequency of SMART diagnostic checks on physical drives. Regular checks help in early detection of potential drive issues.
30
Session expiration (seconds)
length of time before a user is automatically logged out and required to sign in again.
259200
Session inactivity timeout (seconds)
length of time (that user is inactive) before being automatically logged out
86400
System ID
WARNING: changing your system ID will affect your VergeOS license, which can stop the system from running workloads.
will vary
System snapshot profile
Specifies the Snapshot Profile to use for system-level snapshots. The "System Snapshots" profile is automatically created during installation. You can modify this included profile or select a different profile here.
System Snapshots
TCP MTU Probing (0: Disabled, 1: Disabled, but enabled if detected, 2: Enabled)
Controls TCP Maximum Transmission Unit (MTU) Path Discovery. When enabled (2), the system actively probes to discover the optimal MTU size for TCP connections, helping to prevent packet fragmentation. Setting 1 disables probing but enables it if ICMP blackholes are detected.
2
Template to define for syslog server (See rsyslog for format)
Consult rsyslog documentation for proper input syntax.
Timeout in seconds before a machine becomes unresponsive
threshold time for the system to deem a VM unresponsive and attempt starting the VM on an alternate node
120
Timeout in seconds before an unresponsive node is rebooted via IPMI
Specifies the duration the system waits before automatically rebooting an unresponsive node using IPMI. Requires proper IPMI configuration.
3600
Two-factor authentication
Determines the default two-factor authentication (2FA) setting for new users. Options are "Default on" (enabled by default) or "Default off" (disabled by default).
Default off
Two-factor authentication expiration time for authenticated user devices
Sets the duration (in seconds) that a device remains authenticated for 2FA. Set to 0 for no expiration.
7884000
Two-factor authentication expiration time for temporary codes
Defines the validity period (in seconds) for temporary 2FA codes.
300
Webserver max API commands
Limits the maximum number of API commands that can be processed simultaneously.
50
Webserver max connections
Sets the maximum number of concurrent connections to the webserver.
500
Webserver max session API rate limit
Restricts the number of API requests a single session can make within a short time frame.
50
vSAN host/ip override
Specifies an alternative host or IP address for vSAN operations, particularly for incoming site synchronizations.
vSAN max usage percentage
Sets the maximum allowed usage percentage for vSAN storage during incoming site synchronizations.
90
Last updated
Was this helpful?