First problem is, when create first mongodb:queries at PMM, my machine is slow to start agent (15s), but timeout is 10s, i will never add queries because it will request me to repair (mean remove) it.
Second problem, my mongodb need to use username and password to login, I provide it use --uri mongodb://username: password@localhost , but QAN shows “server returned error on SASL authentication step: Authentication failed.”
I’m sure it’s username and password correct bacause at System Summery tab, both system summery and mongodb summery show information correct.
This solution is worked when use Query Profile, but after add authSource, System Summery for Mongo Summery failed.
There has little problem, at our environment (for testing), we use one machine(one IP) to start 2 shard and 1 mongos, each shard with 2 mongod node and 1 arbiter.
If I add mongos and shard1_n1 to PMM, when select instance shard1_n1, At Setting → Status, there will double the databases status, if I have a database named “bill”, will show two line of “bill”, one auth failed (because mongos, obviously), but it should not show these two at one page.
If I add shard1_n1 and shard2_n1 to PMM, no matter which instance I select, Setting → Status will not show anything, just the circle running.
I’m not test yet, but I think these two problem may has same root cause, and will not happened with instance has different IP.
