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API response of api/status to a follower node in raft mode returns RaftHealthyMembers field of null #1433

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geek981108 opened this issue Mar 17, 2022 · 0 comments · May be fixed by #1434
Open

API response of api/status to a follower node in raft mode returns RaftHealthyMembers field of null #1433

geek981108 opened this issue Mar 17, 2022 · 0 comments · May be fixed by #1434

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@geek981108
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geek981108 commented Mar 17, 2022 •
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Background

Topology

Raft mode with:

  • 192.168.7.50: Follower
  • 192.168.7.51: Follower
  • 192.168.7.52: Leader

Request API

api/status

Response Example

Followers:

{
	"Code": "OK",
	"Message": "Application node is healthy",
	"Details": {
		"Healthy": true,
		"Hostname": "ecs-22dfc66mki113jo2941m",
		"Token": "76987b1fdac8522b2867b0637b30f64e437d30a42866d3a21ce9920a6772ba60",
		"IsActiveNode": false,
		"ActiveNode": {
			"Hostname": "192.168.7.52:10008",
			"Token": "",
			"AppVersion": "",
			"FirstSeenActive": "",
			"LastSeenActive": "",
			"ExtraInfo": "",
			"Command": "",
			"DBBackend": "",
			"LastReported": "0001-01-01T00:00:00Z"
		},
		"Error": null,
		"AvailableNodes": [{
			"Hostname": "ecs-22dfc66mki113jo2941m",
			"Token": "76987b1fdac8522b2867b0637b30f64e437d30a42866d3a21ce9920a6772ba60",
			"AppVersion": "3.2.6",
			"FirstSeenActive": "2022-03-17T09:35:29Z",
			"LastSeenActive": "2022-03-17T12:27:50Z",
			"ExtraInfo": "",
			"Command": "",
			"DBBackend": "/usr/local/orchestrator/orchestrator.sqlite3",
			"LastReported": "0001-01-01T00:00:00Z"
		}],
		"RaftLeader": "192.168.7.52:10008",
		"IsRaftLeader": false,
		"RaftLeaderURI": "http://192.168.7.52:3000",
		"RaftAdvertise": "192.168.7.51",
		"RaftHealthyMembers": null
	}
}

Leader:

{
	"Code": "OK",
	"Message": "Application node is healthy",
	"Details": {
		"Healthy": true,
		"Hostname": "ecs-4rn1v6e2772s1rry7guq",
		"Token": "1ccf60cf5a82b4c24a55fdcf28926ebb12fde4cbf17cbb3c88efd616e85e7069",
		"IsActiveNode": true,
		"ActiveNode": {
			"Hostname": "192.168.7.52:10008",
			"Token": "",
			"AppVersion": "",
			"FirstSeenActive": "",
			"LastSeenActive": "",
			"ExtraInfo": "",
			"Command": "",
			"DBBackend": "",
			"LastReported": "0001-01-01T00:00:00Z"
		},
		"Error": null,
		"AvailableNodes": [{
			"Hostname": "ecs-4rn1v6e2772s1rry7guq",
			"Token": "1ccf60cf5a82b4c24a55fdcf28926ebb12fde4cbf17cbb3c88efd616e85e7069",
			"AppVersion": "3.2.6",
			"FirstSeenActive": "2022-03-17T09:35:29Z",
			"LastSeenActive": "2022-03-17T12:30:26Z",
			"ExtraInfo": "",
			"Command": "",
			"DBBackend": "/usr/local/orchestrator/orchestrator.sqlite3",
			"LastReported": "0001-01-01T00:00:00Z"
		}],
		"RaftLeader": "192.168.7.52:10008",
		"IsRaftLeader": true,
		"RaftLeaderURI": "http://192.168.7.52:3000",
		"RaftAdvertise": "192.168.7.52",
		"RaftHealthyMembers": ["192.168.7.52", "192.168.7.51", "192.168.7.50"]
	}
}

Problems

When an API of status check called for followers, it gaves field RaftHealthyMembers null which is confused.

Expect

When an API of status check called for followers, it gaves field RaftHealthyMembers same result of leader node.

Solution

Make a replication of request to leader node when status check API called and get RaftHealthyMembers from it to replace follower one.
@geek981108 geek981108 linked a pull request Mar 18, 2022 that will close this issue
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fix: 🐛 API response of api/status geek981108/orchestrator
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