diff --git a/templates/configmap.yaml b/templates/configmap.yaml
new file mode 100644
index 0000000..00383ce
--- /dev/null
+++ b/templates/configmap.yaml
@@ -0,0 +1,80 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "postgresql.fullname" . }}-config
+  labels:
+    {{- include "postgresql.labels" . | nindent 4 }}
+data:
+  {{- if .Values.replication.enabled }}
+  primary-init.sh: |
+    #!/bin/bash
+    set -e
+    
+    # レプリケーションユーザーの作成
+    psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
+      CREATE USER {{ .Values.postgres.replicationUser }} WITH REPLICATION ENCRYPTED PASSWORD '${REPLICATION_PASSWORD}';
+    EOSQL
+    
+    # pg_hba.confの設定
+    echo "host replication {{ .Values.postgres.replicationUser }} 0.0.0.0/0 md5" >> ${PGDATA}/pg_hba.conf
+    
+    # postgresql.confの設定
+    cat >> ${PGDATA}/postgresql.conf <<EOF
+    wal_level = replica
+    max_wal_senders = 10
+    max_replication_slots = 10
+    hot_standby = on
+    synchronous_commit = {{ .Values.replication.synchronousCommit }}
+    synchronous_standby_names = 'ANY {{ .Values.replication.numSynchronousReplicas }} (*)'
+    EOF
+    
+    # PostgreSQLの再起動
+    pg_ctl reload
+
+  replica-init.sh: |
+    #!/bin/bash
+    set -e
+    
+    # データディレクトリが空の場合のみレプリケーションを初期化
+    if [ ! -s "${PGDATA}/PG_VERSION" ]; then
+      echo "Initializing replica from primary..."
+      
+      rm -rf ${PGDATA}/*
+      
+      PGPASSWORD=${REPLICATION_PASSWORD} pg_basebackup \
+        -h {{ include "postgresql.fullname" . }}-primary \
+        -D ${PGDATA} \
+        -U {{ .Values.postgres.replicationUser }} \
+        -v -P -W -R
+      
+      # standby.signalの作成
+      touch ${PGDATA}/standby.signal
+      
+      echo "Replica initialization completed"
+    fi
+  {{- end }}
+  
+  {{- if .Values.backup.enabled }}
+  backup.sh: |
+    #!/bin/bash
+    set -e
+    
+    BACKUP_DIR="/backup"
+    TIMESTAMP=$(date +%Y%m%d_%H%M%S)
+    BACKUP_FILE="${BACKUP_DIR}/backup_${TIMESTAMP}.sql.gz"
+    RETENTION_DAYS={{ .Values.backup.retention }}
+    
+    echo "Starting backup at ${TIMESTAMP}"
+    
+    # バックアップの実行
+    pg_dumpall -U ${POSTGRES_USER} | gzip > ${BACKUP_FILE}
+    
+    # 古いバックアップの削除
+    find ${BACKUP_DIR} -name "backup_*.sql.gz" -mtime +${RETENTION_DAYS} -delete
+    
+    echo "Backup completed: ${BACKUP_FILE}"
+    
+    # バックアップサイズの確認
+    ls -lh ${BACKUP_FILE}
+  {{- end }}
+