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Improve ISM init script #57

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merged 2 commits into from
Nov 15, 2023
Merged

Improve ISM init script #57

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7634ab1
Improve ISM init script
AlexRuiz7 Nov 15, 2023
65a7a95
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AlexRuiz7 Nov 15, 2023
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57 changes: 35 additions & 22 deletions scripts/indexer-ism-init.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ INDEXER_PASSWORD="admin"
INDEXER_HOSTNAME="localhost"

POLICY_NAME="rollover_policy"
LOG_FILE="/tmp/wazuh-indexer/ism-init.log"

INDEXER_URL="https://${INDEXER_HOSTNAME}:9200"

Expand Down Expand Up @@ -84,15 +85,17 @@ function generate_rollover_template() {
#########################################################################
function load_templates() {
# Note: the wazuh-template.json could also be loaded here.
echo "Will create index templates to configure the alias"
for alias in "${aliases[@]}"; do
generate_rollover_template "${alias}" |
if ! curl -s -k ${C_AUTH} \
-X PUT "${INDEXER_URL}/_template/${alias}-rollover" -o /dev/null \
-X PUT "${INDEXER_URL}/_template/${alias}-rollover" \
-o "${LOG_FILE}" --create-dirs \
-H 'Content-Type: application/json' -d @-; then
echo "Error uploading ${alias} template"
echo " ERROR: '${alias}' template creation failed"
return 1
else
echo "${alias} template uploaded"
echo " SUCC: '${alias}' template created or updated"
fi
done
}
Expand All @@ -106,29 +109,36 @@ function load_templates() {
# None.
#########################################################################
function upload_rollover_policy() {
echo "Will create the '${POLICY_NAME}' policy"
policy_exists=$(
curl -s -k ${C_AUTH} \
-X GET "${INDEXER_URL}/_plugins/_ism/policies/${POLICY_NAME}" \
-o /dev/null \
-o "${LOG_FILE}" --create-dirs \
-w "%{http_code}"
)

# Check if the ${POLICY_NAME} ISM policy was loaded (404 error if not found)
if [[ "${policy_exists}" == "404" ]]; then
if ! curl -s -k ${C_AUTH} -o /dev/null \
-X PUT "${INDEXER_URL}/_plugins/_ism/policies/${POLICY_NAME}" \
-H 'Content-Type: application/json' \
-d "$(generate_rollover_policy)"; then
echo "Error uploading ${POLICY_NAME} policy"
return 1
policy_uploaded=$(
curl -s -k ${C_AUTH} \
-X PUT "${INDEXER_URL}/_plugins/_ism/policies/${POLICY_NAME}" \
-o "${LOG_FILE}" --create-dirs \
-H 'Content-Type: application/json' \
-d "$(generate_rollover_policy)" \
-w "%{http_code}"
)

if [[ "${policy_uploaded}" == "201" ]]; then
echo " SUCC: '${POLICY_NAME}' policy created"
else
echo "${POLICY_NAME} policy uploaded"
echo " ERROR: '${POLICY_NAME}' policy not created => ${policy_uploaded}"
return 1
fi
else
if [[ "${policy_exists}" == "200" ]]; then
echo "${POLICY_NAME} policy already exists"
echo " INFO: policy '${POLICY_NAME}' already exists. Skipping policy creation"
else
echo "Error checking if ${POLICY_NAME} exists"
echo " ERROR: could not check if the policy '${POLICY_NAME}' exists => ${policy_exists}"
return 1
fi
fi
Expand All @@ -155,9 +165,9 @@ function generate_write_index_alias() {
cat <<-EOF
{
"aliases": {
"$1": {
"is_write_index": true
}
"$1": {
"is_write_index": true
}
}
}
EOF
Expand All @@ -169,14 +179,14 @@ function generate_write_index_alias() {
# 1. The alias. String.
#########################################################################
function create_write_index() {
if ! curl -s -k ${C_AUTH} -o /dev/null \
-X PUT "$INDEXER_URL/%3C${1}-4.x-%7Bnow%2Fd%7D-000001%3E?pretty" \
if ! curl -s -k ${C_AUTH} -o "${LOG_FILE}" --create-dirs \
-X PUT "$INDEXER_URL/%3C${1}-4.x-%7Bnow%2Fd%7D-000001%3E" \
-H 'Content-Type: application/json' \
-d "$(generate_write_index_alias "${1}")"; then
echo "Error creating ${1} write index"
echo " ERROR: creating '${1}' write index"
exit 1
else
echo "${1} write index created"
echo " SUCC: '${1}' write index created"
fi
}

Expand All @@ -186,13 +196,16 @@ function create_write_index() {
# 1. List of aliases to initialize.
#########################################################################
function create_indices() {
echo "Will create initial indices for the aliases"
for alias in "${aliases[@]}"; do
# Check if there are any write indices for the current alias
write_index_exists=$(check_for_write_index "${alias}")

# Create the write index if it does not exist
if [[ -z $write_index_exists ]]; then
create_write_index "${alias}"
else
echo " INFO: '${alias}' write index already exists. Skipping write index creation"
fi
done
}
Expand Down Expand Up @@ -320,9 +333,9 @@ function main() {
# Upload the rollover policy
# Create the initial write indices
if load_templates && upload_rollover_policy && create_indices "${aliases[@]}"; then
echo "Indexer ISM initialization finished successfully"
echo "SUCC: Indexer ISM initialization finished successfully."
else
echo "Indexer ISM initialization failed"
echo "ERROR: Indexer ISM initialization failed. Check ${LOG_FILE} for more information."
exit 1
fi
}
Expand Down