Added log utility

Author: sachingade20

cloudbees-cd/kubernetes/logs/README.md

@@ -0,0 +1,19 @@
+Simple Log Utility to fetch/copy Logs from CBCD components from deployed namespaces. 
+Pre-Requisite:
+    kubectl installed and configured.
+
+
+    ➜  logs git:(master) ✗ ./get-logs.sh -help
+    
+        Usage:
+            -n Namespace: The name of the kubernetes namespace/project where CBCD/SDA is deployed
+            -c (Optional) Component: The name of component to fetch logs. defaults to all
+                  all, flow-server, flow-web, flow-devopsinsight, flow-bound-agent, flow-agent
+            -o (Optional)Output path to copy logs. default is /tmp.
+            -k (Optional)Kubeconfig file path to connect to k8s cluster.
+    
+        Examples:
+            ./get-logs.sh -n flow-demo
+            ./get-logs.sh -n flow-demo -c all -o /tmp/flow-logs
+            ./get-logs.sh -n flow-demo -c flow-server -o /tmp/flow-logs
+            ./get-logs.sh -n flow-demo -c flow-server -k /home/foo/kubeconfigfile

cloudbees-cd/kubernetes/logs/get-logs.sh

@@ -0,0 +1,90 @@
+#! /bin/bash
+
+
+kctl() {
+   if [ ! -z $KUBE_CONFIG_PATH ] ; then
+    kubectl --kubeconfig $KUBE_CONFIG_PATH  -n $NAMESPACE "$@"
+   else
+    kubectl -n $NAMESPACE "$@"
+   fi
+}
+
+function get_logs
+{
+  C_FETCH="flow"
+  if [ $COMPONENT == "all" ] ; then
+    C_FETCH="flow"
+  else
+    C_FETCH=$COMPONENT
+  fi
+  for i in $(kctl get po|awk '{print $1}'|awk 'NR!=1'|grep $C_FETCH)
+   do
+   echo "Fetching logs for $i"
+   echo "Creating Directory $OUTPUT/$i/logs"
+   mkdir -p $OUTPUT/$i/logs
+   echo "Copying logs from $i to  $OUTPUT/$i/logs"
+   kctl cp $i:/opt/cbflow/logs $OUTPUT/$i/logs
+   done
+
+}
+function initScript
+{
+    NAMESPACE=""
+    COMPONENT="all"
+    OUTPUT="/tmp"
+    KUBE_CONFIG_PATH=""
+    while getopts h:n:c:o:k: opt
+        do
+           case "$opt" in
+              h) usage "";exit 1;;
+              n) NAMESPACE=$OPTARG;;
+              c) COMPONENT=$OPTARG;;
+              o) OUTPUT=$OPTARG;;
+              k) KUBE_CONFIG_PATH=$OPTARG;;
+              \?) usage "";exit 1;;
+           esac
+        done
+    if  [ -z $NAMESPACE ] ;
+        then
+            echo "$(date) Make sure you provide valid -n NAMESPACE"
+            usage ""
+            exit 1;
+    fi
+
+}
+
+function usage
+{
+    cat <<EOF
+
+    Usage:
+        -n Namespace: The name of the kubernetes namespace/project where CBCD/SDA is deployed
+        -c (Optional) Component: The name of component to fetch logs. defaults to all
+              all, flow-server, flow-web, flow-devopsinsight, flow-bound-agent, flow-agent
+        -o (Optional)Output path to copy logs. default is /tmp.
+        -k (Optional)Kubeconfig file path to connect to k8s cluster.
+
+    Examples:
+        ./get-logs.sh -n flow-demo
+        ./get-logs.sh -n flow-demo -c all -o /tmp/flow-logs
+        ./get-logs.sh -n flow-demo -c flow-server -o /tmp/flow-logs
+        ./get-logs.sh -n flow-demo -c flow-server -k /home/foo/kubeconfigfile
+EOF
+}
+
+function main
+{
+  initScript "$@"
+  kctl get ns $NAMESPACE
+  exit_code=$?
+  if  [ $exit_code != 0 ];
+      then
+          echo "$(date) Please set valid namespace "
+          echo "$(date) Please check kubectl configuration is set correctly. Logging utility not able to reach to k8s cluster"
+          echo "$(date) Please set valid kubeconfig file if exist "
+          exit 1;
+  fi
+  get_logs "$@"
+}
+
+main "$@"