From 72be3b77bf7996092e10191289daf1af49954808 Mon Sep 17 00:00:00 2001 From: Steffen Vogel Date: Wed, 13 Nov 2019 18:09:14 +0100 Subject: [PATCH 1/4] added metrics route --- routes/metrics/metrics_endpoint.go | 103 +++++++++++++++++++++++++++++ start.go | 4 ++ 2 files changed, 107 insertions(+) create mode 100644 routes/metrics/metrics_endpoint.go diff --git a/routes/metrics/metrics_endpoint.go b/routes/metrics/metrics_endpoint.go new file mode 100644 index 0000000..7ecd9dd --- /dev/null +++ b/routes/metrics/metrics_endpoint.go @@ -0,0 +1,103 @@ +package metrics + +import ( + "github.com/chenjiandongx/ginprom" + "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promhttp" + "github.com/gin-gonic/gin" + "git.rwth-aachen.de/acs/public/villas/web-backend-go/database" + "github.com/jinzhu/gorm" +) + +var ( + SimulatorCounter = prometheus.NewCounter( + prometheus.CounterOpts{ + Name: "simulators", + Help: "A counter for the total number of simulators", + }, + ) + + SimulationModelCounter = prometheus.NewCounter( + prometheus.CounterOpts{ + Name: "simulation_models", + Help: "A counter for the total number of simulation models", + }, + ) + + FileCounter = prometheus.NewCounter( + prometheus.CounterOpts{ + Name: "files", + Help: "A counter for the total number of files", + }, + ) + + ScenarioCounter = prometheus.NewCounter( + prometheus.CounterOpts{ + Name: "scenarios", + Help: "A counter for the total number of scenarios", + }, + ) + + UserCounter = prometheus.NewCounter( + prometheus.CounterOpts{ + Name: "users", + Help: "A counter for the total number of users", + }, + ) + + DashboardCounter = prometheus.NewCounter( + prometheus.CounterOpts{ + Name: "dashboards", + Help: "A counter for the total number of dashboards", + }, + ) +) + +func RegisterMetricsEndpoint(rg *gin.RouterGroup) { + // use prometheus metrics exporter middleware. + // + // ginprom.PromMiddleware() expects a ginprom.PromOpts{} poniter. + // It was used for filtering labels with regex. `nil` will pass every requests. + // + // ginprom promethues-labels: + // `status`, `endpoint`, `method` + // + // for example: + // 1). I want not to record the 404 status request. That's easy for it. + // ginprom.PromMiddleware(&ginprom.PromOpts{ExcludeRegexStatus: "404"}) + // + // 2). And I wish ignore endpoint start with `/prefix`. + // ginprom.PromMiddleware(&ginprom.PromOpts{ExcludeRegexEndpoint: "^/prefix"}) + r := gin.Default() + r.Use(ginprom.PromMiddleware(nil)) + + rg.GET("", ginprom.PromHandler(promhttp.Handler())) + + // Register metrics + prometheus.MustRegister( + SimulatorCounter, + SimulationModelCounter, + FileCounter, + ScenarioCounter, + UserCounter, + DashboardCounter, + ) +} + +func InitCounters(db *gorm.DB) { + var simulators, simulation_models, files, scenarios, users, dashboards float64; + + db.Model(&database.Simulator{}).Count(&simulators) + db.Model(&database.SimulationModel{}).Count(&simulation_models) + db.Model(&database.File{}).Count(&files) + db.Model(&database.Scenario{}).Count(&scenarios) + db.Model(&database.User{}).Count(&users) + db.Model(&database.Dashboard{}).Count(&dashboards) + + SimulatorCounter.Add(simulators) + SimulationModelCounter.Add(simulation_models) + FileCounter.Add(files) + ScenarioCounter.Add(scenarios) + UserCounter.Add(users) + DashboardCounter.Add(dashboards) +} diff --git a/start.go b/start.go index df9caf2..9985837 100644 --- a/start.go +++ b/start.go @@ -20,6 +20,7 @@ import ( "git.rwth-aachen.de/acs/public/villas/web-backend-go/routes/simulator" "git.rwth-aachen.de/acs/public/villas/web-backend-go/routes/user" "git.rwth-aachen.de/acs/public/villas/web-backend-go/routes/widget" + "git.rwth-aachen.de/acs/public/villas/web-backend-go/routes/metrics" ) // @title VILLASweb Backend API @@ -41,6 +42,8 @@ func main() { // TODO the following line should be removed in production, it adds test data to the DB database.DBAddTestData(db) + metrics.InitCounters(db) + r := gin.Default() api := r.Group("/api/v2") @@ -60,6 +63,7 @@ func main() { user.RegisterUserEndpoints(api.Group("/users")) simulator.RegisterSimulatorEndpoints(api.Group("/simulators")) healthz.RegisterHealthzEndpoint(api.Group("/healthz")) + metrics.RegisterMetricsEndpoint(r.Group("/metrics")) // register simulator action endpoint only if AMQP client is used if len(database.AMQP_URL) != 0 { amqp.RegisterAMQPEndpoint(api.Group("/simulators")) From 9ff5ea9eaac3f2772b9031c0b99388ee5c2d99d6 Mon Sep 17 00:00:00 2001 From: Steffen Vogel Date: Wed, 13 Nov 2019 18:09:28 +0100 Subject: [PATCH 2/4] update go.mod / go.sum --- go.mod | 7 +++++-- go.sum | 41 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+), 2 deletions(-) diff --git a/go.mod b/go.mod index 56e36f6..7b287fa 100644 --- a/go.mod +++ b/go.mod @@ -1,7 +1,8 @@ module git.rwth-aachen.de/acs/public/villas/web-backend-go require ( - github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc + github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 + github.com/chenjiandongx/ginprom v0.0.0-20191022035802-6f3da3c84986 github.com/dgrijalva/jwt-go v3.2.0+incompatible github.com/gin-gonic/gin v1.4.0 github.com/go-openapi/jsonreference v0.19.3 // indirect @@ -12,6 +13,7 @@ require ( github.com/leodido/go-urn v1.1.0 // indirect github.com/mailru/easyjson v0.7.0 // indirect github.com/nsf/jsondiff v0.0.0-20190712045011-8443391ee9b6 + github.com/prometheus/client_golang v1.2.1 github.com/streadway/amqp v0.0.0-20190404075320-75d898a42a94 github.com/stretchr/testify v1.4.0 github.com/swaggo/gin-swagger v1.2.0 @@ -19,8 +21,9 @@ require ( github.com/tidwall/gjson v1.3.0 golang.org/x/crypto v0.0.0-20190911031432-227b76d455e7 golang.org/x/net v0.0.0-20190912160710-24e19bdeb0f2 // indirect - golang.org/x/sys v0.0.0-20190913121621-c3b328c6e5a7 // indirect golang.org/x/tools v0.0.0-20190916034716-92af9d69eff2 // indirect gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect gopkg.in/go-playground/validator.v9 v9.29.0 ) + +go 1.13 diff --git a/go.sum b/go.sum index 8b79982..ee0dcca 100644 --- a/go.sum +++ b/go.sum @@ -15,9 +15,20 @@ github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWX github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI= github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc h1:cAKDfWh5VpdgMhJosfJnn5/FoN2SRZ4p7fJNX58YPaU= github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= +github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM= +github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= +github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ= +github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLMYoU8P317H5OQ+Via4RmuPwCS0= github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q= +github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8= +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= +github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= +github.com/cespare/xxhash/v2 v2.1.0 h1:yTUvW7Vhb89inJ+8irsUqiWjh8iT6sQPZiQzI6ReGkA= +github.com/cespare/xxhash/v2 v2.1.0/go.mod h1:dgIUBU3pDso/gPgZ1osOZ0iQf77oPR28Tjxl5dIMyVM= +github.com/chenjiandongx/ginprom v0.0.0-20191022035802-6f3da3c84986 h1:6r9/zDxh+oMzqLWol3ByjfoZN85AaCTnXNvEfvc316U= +github.com/chenjiandongx/ginprom v0.0.0-20191022035802-6f3da3c84986/go.mod h1:lINNCb1ZH3c0uL/9ApaQ8muR4QILsi0STj8Ojt8ZmwU= github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= @@ -44,7 +55,9 @@ github.com/gin-gonic/gin v1.3.0/go.mod h1:7cKuhb5qV2ggCFctp2fJQ+ErvciLZrIeoOSOm6 github.com/gin-gonic/gin v1.4.0 h1:3tMoCCfM7ppqsR0ptz/wi1impNpT7/9wQtMZ8lr1mCQ= github.com/gin-gonic/gin v1.4.0/go.mod h1:OW2EZn3DO8Ln9oIKOvM++LBO+5UPHJJDH72/q/3rZdM= github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as= +github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as= github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE= +github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk= github.com/go-openapi/jsonpointer v0.17.0 h1:nH6xp8XdXHx8dqveo0ZuJBluCO2qGrPbDNZ0dwoRHP0= github.com/go-openapi/jsonpointer v0.17.0/go.mod h1:cOnomiV+CVVwFLk0A/MExoFMjwdsUdVpsRhURCKh+3M= github.com/go-openapi/jsonpointer v0.19.2 h1:A9+F4Dc/MCNB5jibxf6rRvOvR/iFgQdyNx9eIhnGqq0= @@ -82,10 +95,14 @@ github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg= github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs= +github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q= github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ= github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ= github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= +github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg= github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs= github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc= github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg= @@ -102,6 +119,7 @@ github.com/jinzhu/now v1.0.1/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/ github.com/json-iterator/go v1.1.5/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU= github.com/json-iterator/go v1.1.6 h1:MrUvLMLTMxbqFJ9kzlvat/rYZqZnW3u4wkLzWTaFwKs= github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU= +github.com/json-iterator/go v1.1.7/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4= github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU= github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w= github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck= @@ -130,9 +148,12 @@ github.com/mattn/go-isatty v0.0.8 h1:HLtExJ+uU2HOZ+wI0Tt5DtUDrx8yhUqDcp7fYERX4CE github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s= github.com/mattn/go-sqlite3 v1.10.0 h1:jbhqpg7tQe4SupckyijYiy0mJJ/pRyHvXf7JdWK860o= github.com/mattn/go-sqlite3 v1.10.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc= +github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU= github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0= +github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q= github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg= github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q= +github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0= github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI= github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0= github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U= @@ -149,14 +170,31 @@ github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw= +github.com/prometheus/client_golang v0.9.3-0.20190127221311-3c4408c8b829 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v0.0.0-20181228144115-9a3f9b0469bb/go.mod h1:STP8DvDyc/dI5b8T5h golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190610200419-93c9922d18ae h1:xiXzMMEQdQcric9hXtr1QU98MHunKK7OTtsoU6bYWs4= golang.org/x/sys v0.0.0-20190610200419-93c9922d18ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190616124812-15dcb6c0061f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190913121621-c3b328c6e5a7 h1:wYqz/tQaWUgGKyx+B/rssSE6wkIKdY5Ee6ryOmzarIg= golang.org/x/sys v0.0.0-20190913121621-c3b328c6e5a7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20191010194322-b09406accb47 h1:/XfQ9z7ib8eEJX2hdgFTZJ/ntt0swNk5oYBziWeTCvY= +golang.org/x/sys v0.0.0-20191010194322-b09406accb47/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs= From cbcf8abef70f4204efbf51af07625a5f7c985316 Mon Sep 17 00:00:00 2001 From: Steffen Vogel Date: Wed, 13 Nov 2019 18:10:28 +0100 Subject: [PATCH 3/4] healthz endpoint shoud reside at root path and be accessible by everybody (/api/v2 requires auth) --- start.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/start.go b/start.go index 9985837..4d92609 100644 --- a/start.go +++ b/start.go @@ -62,7 +62,7 @@ func main() { file.RegisterFileEndpoints(api.Group("/files")) user.RegisterUserEndpoints(api.Group("/users")) simulator.RegisterSimulatorEndpoints(api.Group("/simulators")) - healthz.RegisterHealthzEndpoint(api.Group("/healthz")) + healthz.RegisterHealthzEndpoint(r.Group("/healthz")) metrics.RegisterMetricsEndpoint(r.Group("/metrics")) // register simulator action endpoint only if AMQP client is used if len(database.AMQP_URL) != 0 { From 4c2437185e3cd8a75104cb6cc4198b156bcc7381 Mon Sep 17 00:00:00 2001 From: Steffen Vogel Date: Wed, 13 Nov 2019 18:13:28 +0100 Subject: [PATCH 4/4] added script for testing against kubernetes database --- k8s_test.sh | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 k8s_test.sh diff --git a/k8s_test.sh b/k8s_test.sh new file mode 100644 index 0000000..010e4c7 --- /dev/null +++ b/k8s_test.sh @@ -0,0 +1,10 @@ +#!/bin/bash + +kubectl -n services port-forward svc/postgres-postgresql 5432:5432 & PF=$! + +POSTGRES_PASS=$(kubectl -n villas-demo get secret postgres-credentials -o json | jq -r .data.password | base64 -d) + +go run start.go -dbhost localhost -dbname villas -dbuser villas -dbpass ${POSTGRES_PASS} + +kill $PF +wait $PF