Tomi Eckert
cf5b81889d
- Replace state-based notifications with direct alert functions - Remove auto-cleanup functionality from disk monitoring and configuration - Simplify lock acquisition/release across all monitoring scripts - Add execute_hana_sql helper functions for consistent SQL execution - Remove state file tracking in favor of direct file operations - Standardize error handling with exit codes on critical failures - Clean up hana.conf by removing unused auto-delete directory settings
97 lines
3.4 KiB
Bash
97 lines
3.4 KiB
Bash
#!/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 "${SCRIPT_DIR}/hana_lib.sh"
|
|
|
|
# Acquire lock
|
|
if ! acquire_lock "$SCRIPT_NAME"; then
|
|
exit 1
|
|
fi
|
|
trap 'release_lock "$SCRIPT_NAME"' EXIT
|
|
|
|
log_message "$SCRIPT_NAME" "Starting log segment check..."
|
|
|
|
# Check if hdbsql is available
|
|
if [ ! -x "$HDBSQL_PATH" ]; then
|
|
log_message "$SCRIPT_NAME" "ERROR: hdbsql not found or not executable at ${HDBSQL_PATH}"
|
|
send_alert "$SCRIPT_NAME" "HANA Monitor Error" "hdbsql not found or not executable at ${HDBSQL_PATH}"
|
|
exit 1
|
|
fi
|
|
|
|
# SQL Query for log segments
|
|
SQL_QUERY="SELECT b.host, b.service_name, a.state, count(*) FROM PUBLIC.M_LOG_SEGMENTS a JOIN PUBLIC.M_SERVICES b ON (a.host = b.host AND a.port = b.port) GROUP BY b.host, b.service_name, a.state;"
|
|
|
|
# Execute SQL query
|
|
sql_output=$(execute_hana_sql "$SQL_QUERY")
|
|
sql_status=$?
|
|
|
|
if [ $sql_status -ne 0 ]; then
|
|
log_message "$SCRIPT_NAME" "ERROR: The hdbsql command failed."
|
|
send_alert "$SCRIPT_NAME" "HANA Monitor Error" "The hdbsql command failed."
|
|
exit 1
|
|
fi
|
|
|
|
# Parse SQL output
|
|
total_segments=0
|
|
truncated_segments=0
|
|
free_segments=0
|
|
|
|
while IFS= read -r line; do
|
|
# Skip empty lines and header
|
|
if [[ -z "$line" || "$line" == *"STATE"* || "$line" == *"host"* ]]; then
|
|
continue
|
|
fi
|
|
|
|
cleaned_line=$(echo "$line" | tr -d '"')
|
|
state=$(echo "$cleaned_line" | awk -F',' '{print $3}' | xargs)
|
|
count=$(echo "$cleaned_line" | awk -F',' '{print $4}' | xargs)
|
|
|
|
# Validate count is a number
|
|
if ! [[ "$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=$((free_segments + count))
|
|
fi
|
|
done <<< "$sql_output"
|
|
|
|
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_alert "$SCRIPT_NAME" "HANA Log Segment Warning" "No log segments found."
|
|
exit 1
|
|
fi
|
|
|
|
# Calculate truncated percentage with integer arithmetic
|
|
truncated_percentage=$((truncated_segments * 100 / total_segments))
|
|
|
|
if [ $truncated_percentage -gt $TRUNCATED_PERCENTAGE_THRESHOLD ]; then
|
|
log_message "$SCRIPT_NAME" "ALERT: ${truncated_percentage}% of log segments are 'Truncated'."
|
|
send_alert "$SCRIPT_NAME" "HANA Log Segment" "${truncated_percentage}% of HANA log segments are in 'Truncated' state."
|
|
fi
|
|
|
|
# Calculate free percentage with integer arithmetic
|
|
free_percentage=$((free_segments * 100 / total_segments))
|
|
|
|
if [ $free_percentage -lt $FREE_PERCENTAGE_THRESHOLD ]; then
|
|
log_message "$SCRIPT_NAME" "ALERT: Only ${free_percentage}% of log segments are 'Free'."
|
|
send_alert "$SCRIPT_NAME" "HANA Log Segment" "Only ${free_percentage}% of HANA log segments are in 'Free' state."
|
|
fi
|
|
|
|
log_message "$SCRIPT_NAME" "Log segment check complete."
|