Fix Debian OS unable to download binaries

- Use `uname -m` as fallback to get the architecture as needed in some distributions such as Debian since `uname -p` outputs "unknown".
- In case the binary URL isn't found based on the architecture then fallback to amd64 based binaries with an error.

scripts/linux/functions.bash

@@ -42,14 +42,17 @@ function get_linux_info {
     write_log "$LOG_LEVEL_DEBUG" "$message"
 
     local cpu_arch=$(uname -p 2>"$TASK_ERROR_FILE")
-    if [[ $? -ne 0 ]]; then
-        message="agent.bash ($EXIT_CODE): error getting cpu arch: $(get_task_error_message)"
-        send_log_to_logzio "$LOG_LEVEL_ERROR" "$message" "$LOG_STEP_PRE_INIT" "$LOG_SCRIPT_AGENT" "$func_name" "$AGENT_ID"
-        write_task_post_run "write_error \"$message\""
+    if [[ $? -ne 0 || $cpu_arch == "unknown" ]]; then
+        cpu_arch=$(uname -m 2>"$TASK_ERROR_FILE")
+        if [[ $? -ne 0 ]]; then
+            message="agent.bash ($EXIT_CODE): error getting cpu arch: $(get_task_error_message)"
+            send_log_to_logzio "$LOG_LEVEL_ERROR" "$message" "$LOG_STEP_PRE_INIT" "$LOG_SCRIPT_AGENT" "$func_name" "$AGENT_ID"
+            write_task_post_run "write_error \"$message\""
 
-        return $EXIT_CODE
+            return $EXIT_CODE
+        fi
     fi
-    
+
     message="CPU architecture is '$cpu_arch'"
     send_log_to_logzio "$LOG_LEVEL_DEBUG" "$message" "$LOG_STEP_PRE_INIT" "$LOG_SCRIPT_AGENT" "$func_name" "$AGENT_ID"
     write_log "$LOG_LEVEL_DEBUG" "$message"

scripts/linux/utils_functions.bash

@@ -646,6 +646,9 @@ function get_arch_specific_url {
     elif [[ ( "$CPU_ARCH" == "amd64" || "$CPU_ARCH" == "x86_64" ) && ! -z "$amd_url" ]]; then
         echo "$amd_url"
     else
-        echo "error getting arch specific url, arm_url: '$arm_url', amd_url: '$amd_url'"
+        local message="error getting arch specific url, arm_url: '$arm_url', amd_url: '$amd_url'. Attempting fallback to amd64 arch based URL $amd_url..."
+        send_log_to_logzio "$LOG_LEVEL_ERROR" "$message" '' "$LOG_SCRIPT_UTILS_FUNCTIONS" "$func_name" "$AGENT_ID"
+        write_error "$message"
+        echo "$amd_url"
     fi
 }