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Replace wg-quick route management with idempotent PostUp routes

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wg-quick's own AllowedIPs route handling does a plain `ip route add`
per entry into the main table and hard-fails the whole interface
bring-up with "RTNETLINK: File exists" the moment two servers share
an overlapping AllowedIPs entry (real case: a client's transit IP
duplicated across 4 imported servers). Set Table = off and generate
`ip route replace` PostUp commands instead - idempotent, never fails
on a pre-existing route, and multiple servers can coexist even when
their peers' AllowedIPs overlap.

Also make ServerServiceRestart write the config to disk first, same
as ServerServiceStart already does - it had the same "config file
missing" failure mode.
This commit is contained in:
sysops
2026-07-25 19:53:26 +02:00
parent d585d53fa7
commit cf9c136874
3 changed files with 19 additions and 4 deletions
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main.go
+1 -1
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@@ -299,7 +299,7 @@ func main() {
app.GET(util.BasePath+"/servers/:id/service-status", handler.ServerServiceStatus(db), handler.ValidSession, handler.RequireServerAccess(db))
app.POST(util.BasePath+"/servers/:id/service/start", handler.ServerServiceStart(db, tmplDir), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
app.POST(util.BasePath+"/servers/:id/service/stop", handler.ServerServiceStop(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
app.POST(util.BasePath+"/servers/:id/service/restart", handler.ServerServiceRestart(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
app.POST(util.BasePath+"/servers/:id/service/restart", handler.ServerServiceRestart(db, tmplDir), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
app.POST(util.BasePath+"/backup/download", handler.DownloadBackup(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
app.GET(util.BasePath+"/api/clients", handler.GetClients(db), handler.ValidSession)
app.GET(util.BasePath+"/api/client/:id", handler.GetClient(db), handler.ValidSession)