pymongo操作mongodb

此验证中只开启两个mongodb节点，可以连接任意节点，以下操作不涉及读写，不涉及连接那个节点

mongodb连接：

from pymongo import MongoReplicaSetClient
client = MongoReplicaSetClient('mongodb://test:caesar_123@196.168.1.112:27017/test',replicaset='spock')

rs.status

在command中输出如下：

spock:SECONDARY> rs.status()
{
	"set" : "spock",
	"date" : ISODate("2018-10-07T15:27:19.877Z"),
	"myState" : 2,
	"term" : NumberLong(28),
	"syncingTo" : "196.168.1.112:27017",
	"heartbeatIntervalMillis" : NumberLong(2000),
	"members" : [
		{
			"_id" : 2,
			"name" : "196.168.1.111:27017",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 1457,
			"optime" : {
				"ts" : Timestamp(1538924592, 1),
				"t" : NumberLong(28)
			},
			"optimeDate" : ISODate("2018-10-07T15:03:12Z"),
			"syncingTo" : "196.168.1.112:27017",
			"configVersion" : 25332,
			"self" : true
		},
		{
			"_id" : 3,
			"name" : "196.168.1.112:27017",
			"health" : 1,
			"state" : 1,
			"stateStr" : "PRIMARY",
			"uptime" : 1456,
			"optime" : {
				"ts" : Timestamp(1538924592, 1),
				"t" : NumberLong(28)
			},
			"optimeDate" : ISODate("2018-10-07T15:03:12Z"),
			"lastHeartbeat" : ISODate("2018-10-07T15:27:18.350Z"),
			"lastHeartbeatRecv" : ISODate("2018-10-07T15:27:19.538Z"),
			"pingMs" : NumberLong(0),
			"electionTime" : Timestamp(1538924591, 1),
			"electionDate" : ISODate("2018-10-07T15:03:11Z"),
			"configVersion" : 25332
		}
	],
	"ok" : 1
}

在pymongo中，使用client.admin.command('replSetGetStatus‘)输出见下：

(Pdb) client.admin.command("replSetGetStatus")
{u'term': 28L, u'set': u'spock', u'ok': 1.0, u'heartbeatIntervalMillis': 2000L, u'myState': 1, u'members': [{u'uptime': 1087, u'configVersion': 25332, u'optime': {u'ts': Timestamp(1538924592, 1), u't': 28L}, u'name': u'196.168.1.111:27017', u'pingMs': 0L, u'optimeDate': datetime.datetime(2018, 10, 7, 15, 3, 12), u'syncingTo': u'196.168.1.112:27017', u'state': 2, u'health': 1.0, u'stateStr': u'SECONDARY', u'lastHeartbeatRecv': datetime.datetime(2018, 10, 7, 15, 21, 11, 981000), u'_id': 2, u'lastHeartbeat': datetime.datetime(2018, 10, 7, 15, 21, 11, 142000)}, {u'uptime': 6416, u'configVersion': 25332, u'optime': {u'ts': Timestamp(1538924592, 1), u't': 28L}, u'name': u'196.168.1.112:27017', u'self': True, u'optimeDate': datetime.datetime(2018, 10, 7, 15, 3, 12), u'electionTime': Timestamp(1538924591, 1), u'state': 1, u'health': 1.0, u'stateStr': u'PRIMARY', u'_id': 3, u'electionDate': datetime.datetime(2018, 10, 7, 15, 3, 11)}], u'date': datetime.datetime(2018, 10, 7, 15, 21, 12, 55000)}

primary ip

在pymongo中，使用client.primary输出元组见下：

(Pdb) client.primary
('196.168.1.112', 27017)

(Pdb) client.secondaries
set([(u'196.168.1.111', 27017)])

db.getCollectionInfos

spock:SECONDARY> db.getCollectionInfos()
[
	{
		"name" : "meter",
		"options" : {

		}
	},
	{
		"name" : "resource",
		"options" : {

		}
	}
]

在pymongo中，使用collections = db.list_collections()返回pymongo.command_cursor.CommandCursor对象，遍历每个collection信息，都为字典。

{u'name': u'resource', u'options': {}}
{u'name': u'meter', u'options': {}}

collection增删

(Pdb) flag = db.drop_collection('resource')
(Pdb) flag
{u'ns': u'test.resource', u'ok': 1.0, u'nIndexesWas': 1}
(Pdb) flag = db.create_collection('resource')
(Pdb) flag
Collection(Database(MongoReplicaSetClient(host=['196.168.1.112:27017'], document_class=dict, tz_aware=False, connect=True, replicaset='spock'), u'test'), u'resource')
(Pdb) flag = db.create_collection('resource')
*** CollectionInvalid: collection resource already exists
( Pdb) db.drop_collection('meter')
{u'ns': u'test.meter', u'ok': 1.0, u'nIndexesWas': 4}
(Pdb) db.drop_collection('meter')
{u'code': 26, u'ok': 0.0, u'errmsg': u'ns not found'}
创建capeed类型collection
db.create_collection('meter', capped=True, size=5242880, max=5000)