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HA-node
The following operations can be performed on “HA-node”:
stat HA node
Display the statistics related to HA configuration.
Synopsis
stat HA node [-detail] [-fullValues] [-ntimes |
full )] |
Arguments
detail Specifies detailed output (including more statistics). The output can be quite voluminous. Without this argument, the output will show only a summary.
fullValues Specifies that numbers and strings should be displayed in their full form. Without this option, long strings are shortened and large numbers are abbreviated
ntimes The number of times, in intervals of seven seconds, the statistics should be displayed. Default value: 1 Minimum value: 0
logFile The name of the log file to be used as input.
clearstats Clear the statsistics / counters
Possible values: basic, full
Output
Counters
High Availability (HA) Whether a Citrix ADC is configured for high availability. Possible values are YES and NO. If the value is NO, the high availability statistics below are invalid.
System state (HAState) State of the HA node, based on its health, in a high availability setup. Possible values are: UP - Indicates that the node is accessible and can function as either a primary or secondary node. DISABLED - Indicates that the high availability status of the node has been manually disabled. Synchronization and propagation cannot take place between the peer nodes. INIT - Indicates that the node is in the process of becoming part of the high availability configuration. PARTIALFAIL - Indicates that one of the high availability monitored interfaces has failed because of a card or link failure. This state triggers a failover. COMPLETEFAIL - Indicates that all the interfaces of the node are unusable, because the interfaces on which high availability monitoring is enabled are not connected or are manually disabled. This state triggers a failover. DUMB - Indicates that the node is in listening mode. It does not participate in high availability transitions or transfer configuration from the peer node. This is a configured value, not a statistic. PARTIALFAILSSL - Indicates that the SSL card has failed. This state triggers a failover. ROUTEMONITORFAIL - Indicates that the route monitor has failed. This state triggers a failover.
Master state (mastate) Indicates the high availability state of the node. Possible values are: STAYSECONDARY - Indicates that the selected node remains the secondary node in a high availability setup. In this case a forced failover does not change the state but, instead, returns an appropriate error message. This is a configured value and not a statistic. PRIMARY - Indicates that the selected node is the primary node in a high availability setup. SECONDARY - Indicates that the selected node is the secondary node in a high availability setup. CLAIMING - Indicates that the secondary node is in the process of taking over as the primary node. This is the intermediate state in the transition of the secondary node to primary status. FORCE CHANGE - Indicates that the secondary node is forcibly changing its status to primary due to a forced failover issued on the secondary node.
Last Transition time (TransTime) Time when the last master state transition occurred. You can use this statistic for debugging.
Heartbeats received (HApktrx) Number of heartbeat packets received from the peer node. Heartbeats are sent at regular intervals (default is 200 milliseconds) to determine the state of the peer node.
Heartbeats sent (HApkttx) Number of heartbeat packets sent to the peer node. Heartbeats are sent at regular intervals (default is 200 milliseconds) to determine the state of the peer node.
Propagation timeouts (ptimeout) Number of times propagation timed out.
Sync failure (syncfail) Number of times the configuration of the primary and secondary nodes failed to synchronize since that last transition. A synchronization failure results in mismatched configuration. It can be caused by a mismatch in the Remote Procedural Call (RPC) password on the two nodes forming the high availability pair.
add HA node
Adds a peer node to an HA configuration. Each node must add the other as a peer. An algorithm determines which node becomes primary and which becomes secondary.
Synopsis
add HA node
Arguments
id Number that uniquely identifies the node. For self node, it will always be 0. Peer node values can range from 1-64. Minimum value: 1 Maximum value: 64
IPAddress The NSIP or NSIP6 address of the node to be added for an HA configuration. This setting is neither propagated nor synchronized.
inc This option is required if the HA nodes reside on different networks. When this mode is enabled, the following independent network entities and configurations are neither propagated nor synced to the other node: MIPs, SNIPs, VLANs, routes (except LLB routes), route monitors, RNAT rules (except any RNAT rule with a VIP as the NAT IP), and dynamic routing configurations. They are maintained independently on each node.
Possible values: ENABLED, DISABLED Default value: DISABLED
show HA node
Displays the HA settings of both nodes or, if you specify a node, just the specified node. You can use this command to display the master state (primary or secondary) of the nodes in a HA configuration.
Synopsis
show HA node [
Arguments
id ID of the node whose HA settings you want to display. (The ID of the local node is always 0.) Minimum value: 0 Maximum value: 64
Output
name Node Name.
IPAddress IP Address of the node.
flags The flags for this entry.
stateflag haStatus HA status.
state HA Master State.
haSync HA Sync State.
haProp HA Propagation Status.
enaifaces Enabled interfaces.
disifaces Disabled interfaces.
hamonifaces HAMON ON interfaces.
haHeartbeatifaces HAHEARTBEAT OFF interfaces.
pfifaces Interfaces causing Partial Failure.
ifaces Interfaces on which non-multicast is not seen.
netmask The netmask.
inc INC state.
ssl2 SSL card status.
helloInterval Hello Interval.
deadInterval Dead Interval.
masterStateTime Time elapsed in current master state
failSafe Keep one node primary if both nodes fail the health check, so that a partially available node can back up data and handle traffic. This mode is set independently on each node.
routeMonitor The IP address (IPv4 or IPv6).
maxFlips Max number of flips allowed before becoming sticky primary
maxFlipTime Interval after which flipping of node states can again start
curFlips Keeps track of number of flips that have happened till now in current interval
completedFlipTime To inform user whether flip time is elapsed or not
syncvlan Vlan on which HA related communication is sent. This include sync, propagation , connection mirroring , LB persistency config sync, persistent session sync and session state sync. However HA heartbeats can go all interfaces.
routeMonitorState State for route monitor
haSyncFailureReason Displays the reason for HA SYNC Failure
syncStatusStrictmode strict mode flag for sync status
devno count
Example
An example of the command’s output is as follows: 2 configured nodes: 1) Node ID: 0 IP: 192.168.100.5 Primary node 2) Node ID: 2 IP: 192.168.100.112 Secondary node
bind HA node
Adds a route monitor to the local node. When a Citrix ADC has only static routes for reaching a network, and you want to create a route monitor for the network, you must enable monitored static routes (MSR) for the static routes. Route Monitors are supported both in non-INC and INC modes.
Synopsis
bind HA node [
Arguments
id Number that uniquely identifies the local node. The ID of the local node is always 0. Minimum value: 0 Maximum value: 64
routeMonitor A route that you want the Citrix ADC to monitor in its internal routing table. You can specify an IPv4 address or network, or an IPv6 address or network prefix. If you specify an IPv4 network address or IPv6 network prefix, the appliance monitors any route that matches the network or prefix.
netmask Subnet mask associated with the IPv4 route specified by the routeMonitor parameter.
set HA node
Sets the specified HA related parameters for the node. The settings are neither propagated nor synchronized to the peer node.
Synopsis
set HA node [-haStatus
Arguments
haStatus The HA status of the node. The HA status STAYSECONDARY is used to force the secondary device stay as secondary independent of the state of the Primary device. For example, in an existing HA setup, the Primary node has to be upgraded and this process would take few seconds. During the upgradation, it is possible that the Primary node may suffer from a downtime for a few seconds. However, the Secondary should not take over as the Primary node. Thus, the Secondary node should remain as Secondary even if there is a failure in the Primary node. STAYPRIMARY configuration keeps the node in primary state in case if it is healthy, even if the peer node was the primary node initially. If the node with STAYPRIMARY setting (and no peer node) is added to a primary node (which has this node as the peer) then this node takes over as the new primary and the older node becomes secondary. ENABLED state means normal HA operation without any constraints/preferences. DISABLED state disables the normal HA operation of the node.
Possible values: ENABLED, STAYSECONDARY, DISABLED, STAYPRIMARY
haSync Automatically maintain synchronization by duplicating the configuration of the primary node on the secondary node. This setting is not propagated. Automatic synchronization requires that this setting be enabled (the default) on the current secondary node. Synchronization uses TCP port 3010.
Possible values: ENABLED, DISABLED Default value: ENABLED
haProp Automatically propagate all commands from the primary to the secondary node, except the following:
- All HA configuration related commands. For example, add ha node, set ha node, and bind ha node.
- All Interface related commands. For example, set interface and unset interface.
- All channels related commands. For example, add channel, set channel, and bind channel. The propagated command is executed on the secondary node before it is executed on the primary. If command propagation fails, or if command execution fails on the secondary, the primary node executes the command and logs an error. Command propagation uses port 3010. Note: After enabling propagation, run force synchronization on either node.
Possible values: ENABLED, DISABLED Default value: ENABLED
helloInterval Interval, in milliseconds, between heartbeat messages sent to the peer node. The heartbeat messages are UDP packets sent to port 3003 of the peer node. Default value: 200 Minimum value: 200 Maximum value: 1000
deadInterval Number of seconds after which a peer node is marked DOWN if heartbeat messages are not received from the peer node. Default value: 3 Minimum value: 3 Maximum value: 60
failSafe Keep one node primary if both nodes fail the health check, so that a partially available node can back up data and handle traffic. This mode is set independently on each node.
Possible values: ON, OFF Default value: OFF
maxFlips Max number of flips allowed before becoming sticky primary Default value: 0 Minimum value: 0
maxFlipTime Interval after which flipping of node states can again start Default value: 0 Minimum value: 0
syncvlan Vlan on which HA related communication is sent. This include sync, propagation , connection mirroring , LB persistency config sync, persistent session sync and session state sync. However HA heartbeats can go all interfaces. Minimum value: 1 Maximum value: 4094
syncStatusStrictmode strict mode flag for sync status
Possible values: ENABLED, DISABLED Default value: DISABLED
rm HA node
Removes the peer node from the HA configuration. To completely remove both the nodes from the HA configuration, you have to log on to each node and remove its peer node.
Synopsis
rm HA node
Arguments
id Number that uniquely identifies the peer node.
CLI users: To learn the ID of the peer node, run the show HA node command on the local node. Minimum value: 0 Maximum value: 64
unbind HA node
Removes a route monitor entry from the local node. The Citrix ADC stops monitoring the route in its internal routing table.
Synopsis
unbind HA node [
Arguments
id Number that uniquely identifies the local node. The ID of the local node is always 0. Minimum value: 0 Maximum value: 64
routeMonitor The route specified in the route monitor entry that you want to remove from the Citrix ADC. Can be an IPv4 address or network, or an IPv6 address or network prefix.
netmask Subnet mask associated with the IPv4 route specified by the routeMonitor parameter.
unset HA node
Use this command to remove HA node settings.Refer to the set HA node command for meanings of the arguments.
Synopsis
unset HA node [-haStatus] [-haSync] [-haProp] [-helloInterval] [-deadInterval] [-failSafe] [-maxFlips] [-maxFlipTime] [-syncvlan] [-syncStatusStrictmode]
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