Node status shows whether a ScyllaDB node is up and taking traffic or down because it is unhealthy and unavailable. The nodetool status command lists each node’s status alongside its state, data ownership, address, and cluster location. section 2.1.2
Read the status letter in nodetool output as follows:
- U means Up: the node is taking traffic. section 2.1.2
- D means Down: the node is unhealthy and not taking traffic. section 2.1.2
Checking a node
Run nodetool status --resolve-ip to inspect the cluster with friendlier node names. In output such as UN scylla-1, the first character, U, confirms that scylla-1 is up; the second character, N, describes its separate normal state. section 2.1.2
Table 2.1 Possible values for the node’s status
|
Status letter
|
Meaning
|
Description
|
|---|---|---|
|
U
|
Up
|
Node is taking traffic
|
|
D
|
Down
|
Node is unhealthy and not taking traffic
|
Use the status table to distinguish an available node from an unhealthy node that has stopped taking traffic. section 2.1.2
