graceful restart can not achieve zero-down

[Dev-Jabin]

My project is built on the Beego, Now I want to graceful restart my project with Overseer. When I send kill -SIGUSR2 PID. I found that the current process was closed first, and then fork a new process. This will lead to a period of no work process in the middle, resulting in service denial of access. Unable to achieve zero-down

My project code

func main() {
overseer.Run(overseer.Config{
Program: prog,
Debug: true,
})
}

func prog(state overseer.State) {
beego.BConfig.RecoverPanic = true
beego.BConfig.Listen.Graceful = false
beego.Run()
}

Overseer log

2020/12/29 16:36:31 [overseer master] graceful restart triggered
2020/12/29 16:36:31 [overseer master] restart success
2020/12/29 16:36:31 [overseer slave#2] graceful shutdown requested
2020/12/29 16:36:31 [overseer slave#2] timeout. forceful shutdown
2020/12/29 16:36:31 [overseer master] prog exited with 1
2020/12/29 16:36:31 [overseer master] starting /Users/Demo

2020/12/29 16:36:34 [overseer slave#3] run
2020/12/29 16:36:34 [overseer slave#3] start program

Looking forward to your reply, Thank you!

[jpillora]

You must use the overseer.State.Listener to receive zero-down time restarts

…

On 29 Dec 2020 at 7:38:08 pm, Dev-Jabin ***@***.***> wrote: My project is built on the *Beego*, Now I want to graceful restart my project with Overseer. When I send *kill -SIGUSR2 PID*. I found that the current process was closed first, and then fork a new process. This will lead to a period of no work process in the middle, resulting in service denial of access. Unable to achieve zero-down My project code ` func main() { overseer.Run(overseer.Config{ Program: prog, Debug: true, }) } func prog(state overseer.State) { beego.BConfig.RecoverPanic = true beego.BConfig.Listen.Graceful = false beego.Run() } ` Overseer log ` 2020/12/29 16:36:31 [overseer master] graceful restart triggered 2020/12/29 16:36:31 [overseer master] restart success 2020/12/29 16:36:31 [overseer slave#2] graceful shutdown requested 2020/12/29 16:36:31 [overseer slave#2] timeout. forceful shutdown 2020/12/29 16:36:31 [overseer master] prog exited with 1 2020/12/29 16:36:31 [overseer master] starting /Users/Demo 2020/12/29 16:36:34 [overseer slave#3] run 2020/12/29 16:36:34 [overseer slave#3] start program ` Looking forward to your reply, Thank you! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#66>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAE2X4ZB2EUPQZTQGTAO73TSXGIPBANCNFSM4VM6U4WQ> .

[Dev-Jabin]

You must use the overseer.State.Listener to receive zero-down time restarts
…
On 29 Dec 2020 at 7:38:08 pm, Dev-Jabin @.***> wrote: My project is built on the Beego, Now I want to graceful restart my project with Overseer. When I send kill -SIGUSR2 PID. I found that the current process was closed first, and then fork a new process. This will lead to a period of no work process in the middle, resulting in service denial of access. Unable to achieve zero-down My project code func main() { overseer.Run(overseer.Config{ Program: prog, Debug: true, }) } func prog(state overseer.State) { beego.BConfig.RecoverPanic = true beego.BConfig.Listen.Graceful = false beego.Run() } Overseer log 2020/12/29 16:36:31 [overseer master] graceful restart triggered 2020/12/29 16:36:31 [overseer master] restart success 2020/12/29 16:36:31 [overseer slave#2] graceful shutdown requested 2020/12/29 16:36:31 [overseer slave#2] timeout. forceful shutdown 2020/12/29 16:36:31 [overseer master] prog exited with 1 2020/12/29 16:36:31 [overseer master] starting /Users/Demo 2020/12/29 16:36:34 [overseer slave#3] run 2020/12/29 16:36:34 [overseer slave#3] start program Looking forward to your reply, Thank you! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#66>, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAE2X4ZB2EUPQZTQGTAO73TSXGIPBANCNFSM4VM6U4WQ .

Thanks for your replay.
Now I update my project code as follows

main code

func main() {
	overseer.Run(overseer.Config{
		Program: prog,
		Address: ":8020",
		Debug:   true, //display log of overseer actions
	})
}

Ps: 8020 is my project listen port

prog code

func prog(state overseer.State) {
	http.Serve(state.Listener, nil)
	beego.BConfig.RecoverPanic = true
	beego.BConfig.Listen.Graceful = false
	beego.Run()
}

But I have another problem, How can I use my previous routers. e.g.

beego.Router("/soccer/biz/ping", &soccer_biz.IndexController{}, "Get:GetPong")

Now I curl http://127.0.0.1:8020/soccer/biz/ping return 404.

How to solve this problem? Thank you!

[jpillora]

http.Serve(state.Listener, nil) Will run the global HTTP server (nil router), provide your router in the place of nil

…

On 29 Dec 2020 at 10:00:22 pm, Dev-Jabin ***@***.***> wrote: You must use the overseer.State.Listener to receive zero-down time restarts … <#> On 29 Dec 2020 at 7:38:08 pm, Dev-Jabin *@*.***> wrote: My project is built on the *Beego*, Now I want to graceful restart my project with Overseer. When I send *kill -SIGUSR2 PID*. I found that the current process was closed first, and then fork a new process. This will lead to a period of no work process in the middle, resulting in service denial of access. Unable to achieve zero-down My project code func main() { overseer.Run(overseer.Config{ Program: prog, Debug: true, }) } func prog(state overseer.State) { beego.BConfig.RecoverPanic = true beego.BConfig.Listen.Graceful = false beego.Run() } Overseer log 2020/12/29 16:36:31 [overseer master] graceful restart triggered 2020/12/29 16:36:31 [overseer master] restart success 2020/12/29 16:36:31 [overseer slave#2] graceful shutdown requested 2020/12/29 16:36:31 [overseer slave#2] timeout. forceful shutdown 2020/12/29 16:36:31 [overseer master] prog exited with 1 2020/12/29 16:36:31 [overseer master] starting /Users/Demo 2020/12/29 16:36:34 [overseer slave#3] run 2020/12/29 16:36:34 [overseer slave#3] start program Looking forward to your reply, Thank you! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#66 <#66>>, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAE2X4ZB2EUPQZTQGTAO73TSXGIPBANCNFSM4VM6U4WQ . Thanks for your replay. Now I update my project code as follows main code func main() { overseer.Run(overseer.Config{ Program: prog, Address: ":8020", Debug: true, //display log of overseer actions }) } *Ps: 8020 is my project listen port* prog code func prog(state overseer.State) { http.Serve(state.Listener, nil) beego.BConfig.RecoverPanic = true beego.BConfig.Listen.Graceful = false beego.Run() } But I have another problem, How can I use my previous routers. e.g. *beego.Router("/soccer/biz/ping", &soccer_biz.IndexController{}, "Get:GetPong")* Now I *curl http://127.0.0.1:8020/soccer/biz/ping <http://127.0.0.1:8020/soccer/biz/ping>* return *404*. How to solve this problem? Thank you! — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#66 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAE2X45RMV2P7IJS4XAAJ6TSXGZENANCNFSM4VM6U4WQ> .