initial commit

2026-03-12 20:12:20 +01:00
commit e7c4142294
9 changed files with 904 additions and 0 deletions
--- a/hana_log_segments.sh
+++ b/hana_log_segments.sh
@@ -0,0 +1,111 @@
+#!/bin/bash
+# =============================================================================
+# SAP HANA Log Segment Monitoring Script
+# Checks log segment states (Truncated, Free)
+# =============================================================================
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"
+SCRIPT_NAME="hana_log_segments"
+
+# Load configuration
+source "${SCRIPT_DIR}/hana.conf"
+source "${SCRIPT_DIR}/hana_lib.sh"
+
+# Acquire lock
+LOCK_FILE=$(acquire_lock "$SCRIPT_NAME")
+if [ $? -ne 0 ]; then
+    exit 1
+fi
+trap 'release_lock "$LOCK_FILE"' EXIT
+
+log_message "$SCRIPT_NAME" "Starting log segment check..."
+
+# SQL Query for log segments
+SQL_QUERY="SELECT b.host, b.service_name, a.state, count(*) FROM PUBLIC.M_LOG_SEGMENTS a JOIN PUBLIC.M_SERVICES b ON (a.host = b.host AND a.port = b.port) GROUP BY b.host, b.service_name, a.state;"
+
+# Check if hdbsql is available
+if [ ! -x "$HDBSQL_PATH" ]; then
+    log_message "$SCRIPT_NAME" "ERROR: hdbsql not found or not executable at ${HDBSQL_PATH}"
+    send_notification_if_changed "$SCRIPT_NAME" "hana_hdbsql_path" "HANA Monitor Error" "hdbsql not found or not executable at ${HDBSQL_PATH}" "true" "HDBSQL_ERROR"
+    exit 1
+fi
+
+# Execute SQL query as HANA user with improved error handling
+readarray -t sql_output < <(su - "$HANA_USER" -c "$HDBSQL_PATH -U $HANA_USER_KEY -c \";\" \"$SQL_QUERY\"" 2>&1)
+sql_status=$?
+
+if [ $sql_status -ne 0 ]; then
+    error_message=$(printf '%s\n' "${sql_output[@]}")
+    log_message "$SCRIPT_NAME" "ERROR: The hdbsql command failed. Details: ${error_message}"
+    send_notification_if_changed "$SCRIPT_NAME" "hana_hdbsql_command" "HANA Monitor Error" "The hdbsql command failed. Details: ${error_message}" "true" "HDBSQL_COMMAND_FAILED"
+    exit 1
+fi
+
+# Parse SQL output
+total_segments=0
+truncated_segments=0
+free_segments=0
+
+for line in "${sql_output[@]}"; do
+    # Skip empty lines and header
+    if [[ -z "$line" || "$line" == *"STATE"* || "$line" == *"host"* ]]; then
+        continue
+    fi
+    
+    cleaned_line=$(echo "$line" | tr -d '"')
+    state=$(echo "$cleaned_line" | awk -F',' '{print $3}' | xargs)  # Trim whitespace
+    count=$(echo "$cleaned_line" | awk -F',' '{print $4}' | xargs)  # Trim whitespace
+    
+    # Validate count is a number
+    if ! [[ "$count" =~ ^[0-9]+$ ]]; then
+        continue
+    fi
+    
+    total_segments=$((total_segments + count))
+    if [[ "$state" == "Truncated" ]]; then
+        truncated_segments=$((truncated_segments + count))
+    elif [[ "$state" == "Free" ]]; then
+        free_segments=$((free_segments + count))
+    fi
+done
+
+log_message "$SCRIPT_NAME" "Total Segments: ${total_segments}"
+log_message "$SCRIPT_NAME" "Truncated Segments: ${truncated_segments}"
+log_message "$SCRIPT_NAME" "Free Segments: ${free_segments}"
+
+if [ $total_segments -eq 0 ]; then
+    log_message "$SCRIPT_NAME" "WARNING: No log segments found. Skipping percentage checks."
+    send_notification_if_changed "$SCRIPT_NAME" "hana_log_segments_total" "HANA Log Segment Warning" "No log segments found. Skipping percentage checks." "true" "NO_LOG_SEGMENTS"
+else
+    send_notification_if_changed "$SCRIPT_NAME" "hana_log_segments_total" "HANA Log Segment" "Log segments found." "false" "OK"
+    
+    # Calculate truncated percentage with integer arithmetic
+    if [ $total_segments -gt 0 ]; then
+        truncated_percentage=$((truncated_segments * 100 / total_segments))
+    else
+        truncated_percentage=0
+    fi
+    
+    if [ $truncated_percentage -gt $TRUNCATED_PERCENTAGE_THRESHOLD ]; then
+        log_message "$SCRIPT_NAME" "ALERT: ${truncated_percentage}% of log segments are 'Truncated'."
+        send_notification_if_changed "$SCRIPT_NAME" "hana_log_truncated" "HANA Log Segment" "${truncated_percentage}% of HANA log segments are in 'Truncated' state." "true" "${truncated_percentage}%"
+    else
+        send_notification_if_changed "$SCRIPT_NAME" "hana_log_truncated" "HANA Log Segment" "${truncated_percentage}% of HANA log segments are in 'Truncated' state (below threshold)." "false" "OK"
+    fi
+    
+    # Calculate free percentage with integer arithmetic
+    if [ $total_segments -gt 0 ]; then
+        free_percentage=$((free_segments * 100 / total_segments))
+    else
+        free_percentage=0
+    fi
+    
+    if [ $free_percentage -lt $FREE_PERCENTAGE_THRESHOLD ]; then
+        log_message "$SCRIPT_NAME" "ALERT: Only ${free_percentage}% of log segments are 'Free'."
+        send_notification_if_changed "$SCRIPT_NAME" "hana_log_free" "HANA Log Segment" "Only ${free_percentage}% of HANA log segments are in 'Free' state." "true" "${free_percentage}%"
+    else
+        send_notification_if_changed "$SCRIPT_NAME" "hana_log_free" "HANA Log Segment" "Only ${free_percentage}% of HANA log segments are in 'Free' state (above threshold)." "false" "OK"
+    fi
+fi
+
+log_message "$SCRIPT_NAME" "Log segment check complete."