Only Allowed Client can Access to Cluster

HighLevel 1Automatedoceanbase

Description

Specify an client whitelist of approved servers that can access to the cluster. The benchmark rates this recommendation Manual; the automated check covers its objective pass criterion. Oracle-mode tenant. Passes when ob_tcp_invited_nodes is an explicit IP list rather than '%'. Runs obclient against an Oracle-mode tenant using the connection options in OB_ORA_CONN (default "-h127.0.0.1 -P2881 -uSYS@oracle"); supply the password via OB_ORA_CONN (-p...) or ~/.my.cnf.

How it is checked

Audit method: SQL query

sql_query

out=$(obclient ${OB_ORA_CONN:--h127.0.0.1 -P2881 -uSYS@oracle} -N -B -e "SHOW VARIABLES LIKE 'ob_tcp_invited_nodes'" 2>/dev/null) || exit 1; printf '%s\n' "$out" | awk -F'\t' '$1 == "ob_tcp_invited_nodes" {v = $2; f = 1} END {gsub(/[[:space:]]/, "", v); print (f && v != "" && v != "%") ? "compliant" : "noncompliant"}'

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

SET GLOBAL ob_tcp_invited_nodes = '<ip list>'; containing only the approved client addresses.

Properties

Operating systems: Any
Tags: oceanbasenetworkoracle-mode
Reference: CIS OceanBase Enterprise Edition V4 Benchmark v1.0.0 - 5.2.3 Only Allowed Client can Access to Cluster

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target oceanbase