Cluster peer show - IP address unhealthy: Remote cluster is unavailable or partial
Applies to
- ONTAP 9.x
- Clustered Data ONTAP 8
- Cluster Peer
Issue
- Cluster Peer show outputs shows Unavailable/Partial:
Cluster1::*> cluster peer show
Peer Cluster Name Cluster Serial Number Availability Authentication
------------------------- --------------------- -------------- --------------
Cluster2 1-80-139865 Unavailable ok
Cluster3 1-80-035774 Partial ok
- When a remote cluster's interfaces become unavailable, errors, EMS, and changes in the
cluster peer health
output are reported. - For example, the output below indicates that some of the nodes in
cluster1
are unreachable fromcluster2
cluster2::> cluster peer health show
Node Cluster-Name Node-Name
Ping-Status RDB-Health Cluster-Health Availability
---------- --------------------------- --------- --------------- -----------
node1
cluster1 node1
Data: unreachable
ICMP: unreachable true true false
node2
Data: interface_reachable
ICMP: interface_reachable true true true
node2
cluster1 node1
Data: unreachable
ICMP: interface_reachable true true false
node2
Data: unreachable
ICMP: interface_reachable true true false
4 entries were displayed.
- The
cpeer.unavailable
EMS message is also reported each time the remote cluster becomes unavailable
cluster2::> event log show -messagename cpeer.unavailable -instance
Node: node1
Sequence#: 71687
Time: 5/15/2012 14:02:37
Severity: ALERT
Source: mgwd
Message Name: cpeer.unavailable
Event: cpeer.unavailable: Peer cluster cluster1 is no longer available.
- Event log shows
Failed to contact peer cluster
and similar cluster peer errors.
Periodic update of peer network information failed. The following operations are incomplete: discovery failure
Periodic update of peer information from <cluster_name> failed. The following operations are incomplete: The identity of peer cluster <cluster_uuid> not found, and name cache updates for cluster <cluster_name> failed
Address discovery failed for peer cluster <cluster_uuid>. Reason: Failed to discover remote addresses: Failed to contact peer cluster <cluster_name> at address: <IP_address,..,IP_address>. RPC: Remote system error [from mgwd on node <node_name> (VSID: -3) to mgwd at <IP_address>, <IP_address>]
- These logs have headers such as:
cpeer.xcm.update.warn:error
cpeer.pm.update.warn:error
cpeer.xcm.addr.disc.warn:error
csm.connectionFailed:debug
csm.createSessionFailed:debug
- When it becomes available again, no EMS message will be reported.
- Each time the remote cluster transitions from available to unavailable, a message will be received.
- There is an implicit transition to available between each
cpeer.unavailable
message.