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Deploy an Elasticsearch instance
editDeploy an Elasticsearch instance
editCreate an Elasticsearch cluster. If you are using the Daemonset described in the Virtual memory section to set max_map_count you can add the initContainer below is also used to ensure the setting is set prior to starting Elasticsearch.
cat <<EOF | kubectl apply -f -
apiVersion: elasticsearch.k8s.elastic.co/v1
kind: Elasticsearch
metadata:
name: elasticsearch-sample
spec:
version: 8.16.0
nodeSets:
- name: default
count: 1
# Only uncomment the below section if you are not using the Daemonset to set max_map_count.
# config:
# node.store.allow_mmap: false
podTemplate:
spec:
# This init container ensures that the max_map_count setting has been applied before starting Elasticsearch.
# This is not required, but is encouraged when using the previously mentioned Daemonset to set max_map_count.
# Do not use this if setting config.node.store.allow_mmap: false
initContainers:
- name: max-map-count-check
command: ['sh', '-c', "while true; do mmc=$(cat /proc/sys/vm/max_map_count); if [ ${mmc} -eq 262144 ]; then exit 0; fi; sleep 1; done"]
EOF