CSEC_PUBLIC/securityonion
1
0
Fork 0
mirror of https://github.com/Security-Onion-Solutions/securityonion.git synced 2025-12-06 17:22:49 +01:00
Code Issues Packages Projects Releases Wiki Activity

Fix closed index function and check

Browse Source
This commit is contained in:
weslambert
2023-03-28 10:54:21 -04:00
committed by GitHub
parent d494381e9d
commit 9411f5ca79
1 changed files with 51 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

95
salt/curator/files/bin/so-curator-cluster-delete-delete
View File

@@ -9,67 +9,47 @@
{%- set ELASTICSEARCH_HOST = GLOBALS.node_ip -%}
{%- set RETENTION = salt['pillar.get']('elasticsearch:retention', ELASTICDEFAULTS.elasticsearch.retention, merge=true) -%}
# Copyright Security Onion Solutions LLC and/or licensed to Security Onion Solutions LLC under one
# or more contributor license agreements. Licensed under the Elastic License 2.0 as shown at
# https://securityonion.net/license; you may not use this file except in compliance with the
# Elastic License 2.0.
LOG="/opt/so/log/curator/so-curator-cluster-delete.log"
LOG_SIZE_LIMIT=$(/usr/sbin/so-elasticsearch-cluster-space-total {{ RETENTION.retention_pct}})
overlimit() {
[[ $(/usr/sbin/so-elasticsearch-cluster-space-used) -gt "${LOG_SIZE_LIMIT}" ]]
[[ $(/usr/sbin/so-elasticsearch-cluster-space-used) -gt "${LOG_SIZE_LIMIT}" ]]
}
closedindices() {
# If we can't query Elasticsearch, then immediately return false.
/usr/sbin/so-elasticsearch-query _cat/indices?h=index,status | grep close > /dev/null 2>&1
[ $? -eq 1 ] && return false
# We need to determine the oldest closed index.
# First, get the list of closed indices using _cat/indices?h=index,status | grep close | awk '{print $1}'.
# First, get the list of closed indices using _cat/indices?h=index,status | grep close | awk '{print $1}'.
# Next, filter out any so-case indices.
# Finally, use grep's -q option to return true if there are any remaining logstash-, so-, or .ds-logs- indices.
CLOSED_INDICES=$(/usr/sbin/so-elasticsearch-query _cat/indices?h=index,status | grep close | awk '{print $1}' | grep -v "so-case" | grep -q -E "(logstash-|so-|.ds-logs-)" | sort -t- -k3)
# We iterate through the closed indices
for CLOSED_INDEX in ${CLOSED_INDICES}; do
# Now that we've sorted the indices from oldest to newest, we need to check each index to see if it is assigned as the current write index for a data stream
# To do so, we need to identify to which data stream this index is associated
# We extract the data stream name using the pattern below
DATASTREAM_PATTERN="logs-[a-zA-Z_.]+-[a-zA-Z_.]+"
DATASTREAM=$(echo "${CLOSED_INDEX}" | grep -oE "$DATASTREAM_PATTERN")
# We look up the data stream, and determine the write index
CURRENT_WRITE_INDEX=$(/usr/sbin/so-elasticsearch-query _data_stream/$DATASTREAM | jq -r .data_streams[0].indices[-1].index_name)
# We make sure we are not trying to delete a write index
if [ "${CLOSED_INDEX}" != "${CURRENT_WRITE_INDEX}" ]; then
# This should not be a write index, so we should be allowed to delete it
/usr/sbin/so-elasticsearch-query ${CLOSED_INDEX} -XDELETE
# Finally, write a log entry that says we deleted it.
echo "$(date) - Used disk space exceeds LOG_SIZE_LIMIT (${LOG_SIZE_LIMIT} GB) - Index ${CLOSED_INDEX} deleted ..." >> ${LOG}
fi
if ! overlimit; then
exit
fi
done
/usr/sbin/so-elasticsearch-query _cat/indices?h=index,status | grep close | awk '{print $1}' | grep -v "so-case" | grep -q -E "(logstash-|so-|.ds-logs-)"
}
while overlimit; do
# Check for 2 conditions:
# 1. Are Elasticsearch indices using more disk space than LOG_SIZE_LIMIT?
# 2. Are there any closed indices that we can delete?
# If both conditions are true, keep on looping until one of the conditions is false.
# We need to determine the oldest open index.
# First, get the list of open indices using _cat/indices?h=index,status | grep open | awk '{print $1}'.
# Next, filter out any so-case indices and only select the remaining logstash-, so-, or .ds-logs- indices.
# Then, sort by date by telling sort to use hyphen as delimiter and sort on the third field.
OPEN_INDICES=$(/usr/sbin/so-elasticsearch-query _cat/indices?h=index,status | grep open | awk '{print $1}' | grep -v "so-case" | grep -E "(logstash-|so-|.ds-logs-)" | sort -t- -k3)
# We iterate through the open indices
for OPEN_INDEX in ${OPEN_INDICES}; do
# Now that we've sorted the indices from oldest to newest, we need to check each index to see if it is assigned as the current write index for a data stream
while overlimit && closedindices; do
CLOSED_INDICES=$(/usr/sbin/so-elasticsearch-query _cat/indices?h=index,status | grep close | awk '{print $1}' | grep -v "so-case" | grep -E "(logstash-|so-|.ds-logs-)" | sort -t- -k3)
for CLOSED_INDEX in ${CLOSED_INDICES}; do
# Now that we've determined OLDEST_OPEN_INDEX, ask Elasticsearch to delete it.
# First, we need to check if the index is assigned as the current write index for a data stream
# To do so, we need to identify to which data stream this index is associated
# We extract the data stream name using the pattern below
DATASTREAM_PATTERN="logs-[a-zA-Z_.]+-[a-zA-Z_.]+"
DATASTREAM=$(echo "${OPEN_INDEX}" | grep -oE "$DATASTREAM_PATTERN")
# We look up the data stream, and determine the write index
CURRENT_WRITE_INDEX=$(/usr/sbin/so-elasticsearch-query _data_stream/$DATASTREAM | jq -r .data_streams[0].indices[-1].index_name)
# We make sure we are not trying to delete a write index
if [ "${OPEN_INDEX}" != "${CURRENT_WRITE_INDEX}" ]; then
# This should not be a write index, so we should be allowed to delete it
/usr/sbin/so-elasticsearch-query ${OPEN_INDEX} -XDELETE
# Finally, write a log entry that says we deleted it.
echo "$(date) - Used disk space exceeds LOG_SIZE_LIMIT (${LOG_SIZE_LIMIT} GB) - Index ${OPEN_INDEX} deleted ..." >> ${LOG}
DATASTREAM=$(echo "${CLOSED_INDEX}" | grep -oE "$DATASTREAM_PATTERN")
CURRENT_WRITE_INDEX=$(/usr/sbin/so-elasticsearch-query _data_stream/$DATASTREAM | jq -r .data_streams[0].indices[-1].index_name)
if [ "${CLOSED_INDEX}" != "${CURRENT_WRITE_INDEX}" ]; then
# This should not be a write index, so we should be allowed to delete it
/usr/sbin/so-elasticsearch-query ${CLOSED_INDEX} -XDELETE
# Finally, write a log entry that says we deleted it.
echo "$(date) - Used disk space exceeds LOG_SIZE_LIMIT (${LOG_SIZE_LIMIT} GB) - Index ${CLOSED_INDEX} deleted ..." >> ${LOG}
fi
if ! overlimit; then
exit
@@ -77,3 +57,30 @@ while overlimit; do
done
done
while overlimit; do
# We need to determine OLDEST_OPEN_INDEX:
# First, get the list of open indices using _cat/indices?h=index,status | grep open | awk '{print $1}'.
# Next, filter out any so-case indices and only select the remaining logstash-, so-, or .ds-logs- indices.
# Then, sort by date by telling sort to use hyphen as delimiter and sort on the third field.
OPEN_INDICES=$(/usr/sbin/so-elasticsearch-query _cat/indices?h=index,status | grep open | awk '{print $1}' | grep -v "so-case" | grep -E "(logstash-|so-|.ds-logs-)" | sort -t- -k3)
#OLDEST_OPEN_INDEX=$(so-elasticsearch-query _cat/indices?h=index,status | grep open | awk '{print $1}' | grep -v "so-case" | grep -E "(logstash-|so-|.ds-logs-)" | sort -t- -k3 | head -1)
for OPEN_INDEX in ${OPEN_INDICES}; do
# Now that we've determined OLDEST_OPEN_INDEX, ask Elasticsearch to delete it.
# First, we need to check if the index is assigned as the current write index for a data stream
# To do so, we need to identify to which data stream this index is associated
DATASTREAM_PATTERN="logs-[a-zA-Z_.]+-[a-zA-Z_.]+"
DATASTREAM=$(echo "${OPEN_INDEX}" | grep -oE "$DATASTREAM_PATTERN")
CURRENT_WRITE_INDEX=$(/usr/sbin/so-elasticsearch-query _data_stream/$DATASTREAM | jq -r .data_streams[0].indices[-1].index_name)
if [ "${OPEN_INDEX}" != "${CURRENT_WRITE_INDEX}" ]; then
# This should not be a write index, so we should be allowed to delete it
/usr/sbin/so-elasticsearch-query ${OPEN_INDEX} -XDELETE
# Finally, write a log entry that says we deleted it.
echo "$(date) - Used disk space exceeds LOG_SIZE_LIMIT (${LOG_SIZE_LIMIT} GB) - Index ${OPEN_INDEX} deleted ..." >> ${LOG}
fi
if ! overlimit; then
exit
fi
done
done