2026-03-12 21:01:38

2026-03-12 22:01:38 +01:00
parent 3bd1db26cc
commit 26296b6d6a
336 changed files with 27507 additions and 0 deletions
--- a/tiddlywiki/MongoDB
+++ b/tiddlywiki/MongoDB
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+~~~~~~~~~~~~~~~~~~~~~
+~~ CONGFIG servers ~~
+~~~~~~~~~~~~~~~~~~~~~
+
+-- IMPORTANT: note that the SECURITY are initially disabled
+
+~~ example mongod.conf for CONFIG server
+----------------------------------------------->
+storage:
+  dbPath: "/data/mongodb/"
+  journal:
+    enabled: true
+  wiredTiger:
+    engineConfig:
+      cacheSizeGB: 1
+
+net:
+  port: 27017
+  bindIp: 127.0.0.1,ivera-conf01,ivera-conf01-priv
+
+#security:
+  #authorization: 'enabled'
+  #keyFile: /app/mongodb/conf/keyfile.basic
+
+replication:
+  replSetName: ivera_conf
+  oplogSizeMB: 100
+  enableMajorityReadConcern: true
+
+sharding:
+  clusterRole: configsvr
+<-----------------------------------------------
+
+-- replication setup
+cfg = { 
+	_id : "ivera_conf",
+	members : [ { "_id" : 0, "host":"ivera-conf01-priv:27017"},],
+	configsvr: true,
+}
+rs.initiate(cfg)
+
+rs.add('ivera-conf02-priv:27017');
+
+rs.conf();
+rs.status();
+
+-- security setup on PRIMARY
+use admin
+db.createUser({ user: "superhero",  pwd: "secret", roles: ["root"]});
+
+-- uncomment SECURITY lines from config file on PRIMARY/SECONDARY and restart MongoDB instances
+
+~~~~~~~~~~~~~~~~~~
+~~ DATA servers ~~
+~~~~~~~~~~~~~~~~~~
+
+-- on DATA servers, the security can be implemented before or after replication setup
+
+~~ example mongod.conf for DATA server
+----------------------------------------------->
+storage:
+  dbPath: "/data/mongodb/"
+  journal:
+    enabled: true
+  wiredTiger:
+    engineConfig:
+      cacheSizeGB: 1
+
+net:
+  port: 27017
+  bindIp: 127.0.0.1,ivera-mongo01,ivera-mongo01-priv
+
+security:
+  authorization: 'enabled'
+  keyFile: /app/mongodb/conf/keyfile.basic
+
+replication:
+  replSetName: ivera_data_01_02
+  oplogSizeMB: 100
+  enableMajorityReadConcern: true
+
+sharding:
+  clusterRole: shardsvr
+<-----------------------------------------------
+
+-- replication setup
+cfg = { 
+	_id : "ivera_conf",
+	members : [ { "_id" : 0, "host":"ivera-conf01-priv:27017"},],
+	configsvr: true,
+}
+rs.initiate(cfg)
+
+rs.add('ivera-conf02-priv:27017');
+
+rs.conf();
+rs.status();
+
+
+~~~~~~~~~~~~~~~~~~~~
+~~ ROUTER servers ~~
+~~~~~~~~~~~~~~~~~~~~
+
+~~ example mongos.conf 
+----------------------------------------------->
+net:
+  port: 27017
+  bindIp: 127.0.0.1,ivera-router01,ivera-router01-priv
+
+sharding:
+  configDB: "ivera_conf/ivera-conf01:27017,ivera-conf01:27017"
+
+security:
+  keyFile: /app/mongodb/conf/keyfile.basic
+<-----------------------------------------------
+
+-- create SYSTEMD service for MongoDB Router
+-- create service unit file /etc/systemd/system/mongos.service
+----------------------------------------------->
+[Unit]
+Description=MongoDB Router
+After=multi-user.target
+
+[Service]
+Type=simple
+# (file size)
+LimitFSIZE=infinity
+# (cpu time)
+LimitCPU=infinity
+# (virtual memory size)
+LimitAS=infinity
+# (locked-in-memory size)
+LimitMEMLOCK=infinity
+# (open files)
+LimitNOFILE=64000
+# (processes/threads)
+LimitNPROC=64000
+
+User=mongod
+Group=mongod
+
+ExecStart=/app/mongodb/product/server/current_version/bin/mongos --config=/app/mongodb/conf/mongos.conf --logpath=/app/mongodb/log/mongos.log
+
+[Install]
+WantedBy=multi-user.target
+<-----------------------------------------------
+
+systemctl daemon-reload
+systemctl start mongos
+systemctl status mongos
+systemctl enable mongos
+
+-- connect to MongoDB Router un authentified mode and add shards
+mongo --username "superhero" --password "******"
+
+sh.addShard( "ivera_data_01_02/ivera-mongo01-priv:27017")
+sh.addShard( "ivera_data_01_02/ivera-mongo02-priv:27017")
+sh.addShard( "ivera_data_03_04/ivera-mongo03-priv:27017")
+sh.addShard( "ivera_data_03_04/ivera-mongo04-priv:27017")
+sh.addShard( "ivera_data_05_06/ivera-mongo05-priv:27017")
+sh.addShard( "ivera_data_05_06/ivera-mongo06-priv:27017")
+
+-- NOTE: a MongoDB router don't have any data locally -- except the mongos.conf file
+-- We can create multiple MongoDB routers and use a load balancer to redirect user's calls
+
+~~~~~~~~~~~~~~~~~~
+~~ Test Cluster ~~
+~~~~~~~~~~~~~~~~~~
+
+-- create a database and activate sharding at the database level
+use exampleDB
+sh.enableSharding("exampleDB")
+
+-- check database sharding
+use config
+db.databases.find()
+
+-- create a collection and hash value of _id
+db.exampleCollection.ensureIndex( { _id : "hashed" } )
+
+-- shard the collection
+sh.shardCollection( "exampleDB.exampleCollection", { "_id" : "hashed" } )
+
+-- insert documents
+for (var i = 1; i <= 500; i++) db.exampleCollection.insert( { x : i } )
+
+-- display collection documents distributions across shards
+db.exampleCollection.getShardDistribution()