Adding postgres analyzer

Author: marccampbell

Makefile

@@ -67,8 +67,8 @@ vet:
 
 .PHONY: generate
 generate: controller-gen client-gen
-	controller-gen object:headerFile=./hack/boilerplate.go.txt paths=./pkg/apis/...
-	client-gen --output-package=github.com/replicatedhq/troubleshoot/pkg/client --clientset-name troubleshootclientset --input-base github.com/replicatedhq/troubleshoot/pkg/apis --input troubleshoot/v1beta1 -h ./hack/boilerplate.go.txt
+	$(shell go env GOPATH)/bin/controller-gen object:headerFile=./hack/boilerplate.go.txt paths=./pkg/apis/...
+	$(shell go env GOPATH)/bin/client-gen --output-package=github.com/replicatedhq/troubleshoot/pkg/client --clientset-name troubleshootclientset --input-base github.com/replicatedhq/troubleshoot/pkg/apis --input troubleshoot/v1beta1 -h ./hack/boilerplate.go.txt
 
 .PHONY: openapischema
 openapischema: controller-gen

examples/preflight/postgres.yaml

@@ -0,0 +1,23 @@
+apiVersion: troubleshoot.replicated.com/v1beta1
+kind: Preflight
+metadata:
+  name: sample
+spec:
+  collectors:
+    - postgres:
+        collectorName: pg
+        uri: postgres://testuser:password@postgresql:5432/testdb?sslmode=disable
+  analyzers:
+    - postgres:
+        checkName: Must be postgres 10.x or later
+        collectorName: pg
+        outcomes:
+          - fail:
+              when: "connected == false"
+              message: Cannot connect to postgres server
+          - fail:
+              when: "version < 10.x"
+              message: The postgres server must be at least version 10
+          - pass:
+              message: The postgres connection checks out
+  

examples/preflight/text-analyze.yaml

@@ -0,0 +1,20 @@
+apiVersion: troubleshoot.replicated.com/v1beta1
+kind: Preflight
+metadata:
+  name: example-preflight-checks
+spec:
+  collectors:
+    - data:
+        name: config/replicas.txt
+        data: "2"
+  analyzers:
+    - textAnalyze:
+        checkName: Replica Count
+        fileName: config/replicas.txt
+        regexGroups: '(?P<Replicas>\d+)'
+        outcomes:
+          - fail:
+              when: "Replicas < 5"
+              message: That's not enough replicas!
+          - pass:
+              message: You've selected at leat 5 replicas