Tools installation function added

.functions/common.sh

@@ -11,6 +11,96 @@ function asktobreak(){
             printf "\n"
             break;
         fi
-    done
     return $return_value
+    done
 }
+
+function new_log(){
+    # script output
+    printf "\n****  [%s]  ***\n" "$*"
+}
+
+
+function install_tools(){
+    new_log "Install client tools"
+    echo "- kubectl"
+    echo "- helm"
+    echo "- stern"
+    echo "- virtctl"
+    if asktobreak; then
+        return
+    fi
+
+    set +e
+
+    echo "---- kubectl ----"
+    cd $HOME/bin
+    if [[ -f kubectl ]]; then
+        KUBECTL_CURRENT=$(./kubectl version --client 2> /dev/null| sed -n 's/.* GitVersion:"\(v[0-9]*\.[0-9]*\.[0-9]*\)".*/\1/p')
+    else
+        KUBECTL_CURRENT="N/A"
+    fi
+    KUBECTL_STABLE="$(curl -L -s https://dl.k8s.io/release/stable.txt)"
+    echo "Installed version:     $KUBECTL_CURRENT"
+    echo "Latest stable version: $KUBECTL_STABLE"
+    if [[ "$KUBECTL_CURRENT" != "$KUBECTL_STABLE" ]]; then
+        echo "updating to $KUBECTL_STABLE"
+        curl -LO https://dl.k8s.io/release/$KUBECTL_STABLE/bin/linux/amd64/kubectl
+        chmod +x kubectl
+    fi
+    echo ""
+
+
+    echo "---- helm ----"
+    if [[ -f helm ]]; then
+        HELM_CURRENT=$(./helm version | sed -n 's/.*Version:"\(v[0-9]*\.[0-9]*\.[0-9]*\)".*/\1/p')
+    else
+        HELM_CURRENT="N/A"
+    fi
+    HELM_STABLE="$(curl -Ls https://github.com/helm/helm/releases | egrep 'href="/helm/helm/releases/tag/v[0-9]+.[0-9]+.[0-9]+\"' |  head -n 1 | sed -n 's/.*tag\/\(v.*\)" data.*/\1/p')"
+    echo "Installed version:     $HELM_CURRENT"
+    echo "Latest stable version: $HELM_STABLE"
+    if [[ "$HELM_CURRENT" != "$HELM_STABLE" ]]; then
+        echo "updating to $HELM_STABLE"
+        curl -LO https://get.helm.sh/helm-$HELM_STABLE-linux-amd64.tar.gz
+        tar xvzf helm-$HELM_STABLE-linux-amd64.tar.gz --strip-components=1 linux-amd64/helm
+        rm helm-$HELM_STABLE-linux-amd64.tar.gz
+    fi
+    echo ""
+
+    echo "---- stern ----"
+    if [[ -f stern ]]; then
+        STERN_CURRENT="v$(./stern -v | head -n1 | cut -d " " -f2)"
+    else
+        STERN_CURRENT="N/A"
+    fi
+    STERN_STABLE="$(curl -Ls https://github.com/stern/stern/releases | egrep 'href="/stern/stern/releases/tag/v[0-9]+.[0-9]+.[0-9]+*\"' | head -n 1 | sed -n 's/.*tag\/\(v.*\)" data.*/\1/p')"
+    echo "Installed version:     $STERN_CURRENT"
+    echo "Latest stable version: $STERN_STABLE"
+    if [[ "$STERN_CURRENT" != "$STERN_STABLE" ]]; then
+        echo "updating to $STERN_STABLE"
+        curl -LO https://github.com/stern/stern/releases/download/$STERN_STABLE/stern_${STERN_STABLE:1}_linux_amd64.tar.gz
+        tar xvzf stern_${STERN_STABLE:1}_linux_amd64.tar.gz --strip-components=1 stern_${STERN_STABLE:1}_linux_amd64/stern
+        rm stern_${STERN_STABLE:1}_linux_amd64.tar.gz
+    fi
+    echo ""
+
+    echo "---- virtctl ----"
+    if [[ -f stern ]]; then
+        VIRTCTL_CURRENT="$(./virtctl version --client 2> /dev/null| sed -n 's/.*GitVersion:"\(v[0-9]*\.[0-9]*\.[0-9]*\)".*/\1/p')"
+    else
+        VIRTCTL_CURRENT="N/A"
+    fi
+    VIRTCTL_STABLE="$(curl -Ls https://github.com/kubevirt/kubevirt/releases | egrep 'href="/kubevirt/kubevirt/releases/tag/v[0-9]+.[0-9]+.[0-9]+*\"' | head -n 1 | sed -n 's/.*tag\/\(v.*\)" data.*/\1/p')"
+    echo "Installed version:     $VIRTCTL_CURRENT"
+    echo "Latest stable version: $VIRTCTL_STABLE"
+    if [[ "$VIRTCTL_CURRENT" != "$VIRTCTL_STABLE" ]]; then
+        echo "updating to $VIRTCTL_STABLE"
+        curl -Lo virtctl https://github.com/kubevirt/kubevirt/releases/download/$VIRTCTL_STABLE/virtctl-$VIRTCTL_STABLE-linux-amd64
+        chmod +x ./virtctl
+    fi
+    echo ""
+    set -e
+    return
+}
+