- Added a variable to specify the Go version.

- Added a condition that will check the defined version Go with the version of Go installed on the system.
  Based on this condition either the defined version of Go gets installed or not.

Author: Mattchis

rmmagent-linux.sh

@@ -126,11 +126,13 @@ rmm_agent_type=$8
 ## Uninstall var for easy scription
 mesh_fqdn=$2
 mesh_id=$3
+## Setting Go verison to be installed
+go_version="1.21.5"
 
-go_url_amd64="https://go.dev/dl/go1.21.5.linux-amd64.tar.gz"
-go_url_x86="https://go.dev/dl/go1.21.5.linux-386.tar.gz"
-go_url_arm64="https://go.dev/dl/go1.21.5.linux-arm64.tar.gz"
-go_url_armv6="https://go.dev/dl/go1.21.5.linux-armv6l.tar.gz"
+go_url_amd64="https://go.dev/dl/go$go_version.linux-amd64.tar.gz"
+go_url_x86="https://go.dev/dl/go$go_version.linux-386.tar.gz"
+go_url_arm64="https://go.dev/dl/go$go_version.linux-arm64.tar.gz"
+go_url_armv6="https://go.dev/dl/go$go_version.linux-armv6l.tar.gz"
 
 function go_install() {
         if ! command -v go &> /dev/null; then
@@ -156,9 +158,40 @@ function go_install() {
                 export GOPATH=/usr/local/go
                 export GOCACHE=/root/.cache/go-build
 
-                echo "Golang Install Done !"
+                echo "Go is installed (version $go_current_version)."
         else
-                echo "Go is already installed"
+                # Get the current version of Go installed
+                go_current_version=$(go version | awk '{print $3}' | sed 's/go//')
+
+                if [ "$go_current_version" != "$go_version" ]; then
+                        echo "Version mismatch. Current installed version is $go_current_version. Desired version is $go_version."
+                        echo "Installing Go $go_version..."
+                        ## Installing golang
+                        case $system in
+                        amd64)
+                        wget -O /tmp/golang.tar.gz $go_url_amd64
+                                ;;
+                        x86)
+                        wget -O /tmp/golang.tar.gz $go_url_x86
+                        ;;
+                        arm64)
+                        wget -O /tmp/golang.tar.gz $go_url_arm64
+                        ;;
+                        armv6)
+                        wget -O /tmp/golang.tar.gz $go_url_armv6
+                        ;;
+                        esac
+
+                        rm -rvf /usr/local/go/
+                        tar -xvzf /tmp/golang.tar.gz -C /usr/local/
+                        rm /tmp/golang.tar.gz
+                        export GOPATH=/usr/local/go
+                        export GOCACHE=/root/.cache/go-build
+
+                        echo "Go $go_version installed."
+                else
+                        echo "Go is up to date (version $go_current_version)."
+                fi
         fi
 }