docs: add gogo usage guide

README.md

@@ -6,3 +6,175 @@ Maintenance application for quick access, check and resolve issues VM/DCImanager
 
 
 ### See [CONTRIBUTING.md](CONTRIBUTING.md) for a general overview of how to contribute
+
+
+
+## How to use gogo companion:
+
+
+#### Dependencies
+
+ОС: Linux, Mac, Windows
+Shell: bash
+
+
+#### Installation
+
+- download or copy the script from the root of the repository `/scripts/gogo/gogo.sh`
+- to call the script without specifying the full path, put it in the directory that is in $PATH (in the future, I assume that you will have it `~/.local/bin/`)
+
+```console
+curl https://git.isptech.ru/ISPsystem/isp-maintenance/raw/branch/main/scripts/gogo/gogo.sh -o ~/.local/bin/gogo && chmod u+x ~/.local/bin/gogo
+```
+
+#### Configuration
+
+For the script to work, you need a configuration file with settings `~/.config/gogo/gogo.conf`
+
+This config contains the following fields that are read every time you start
+
+```
+GO_SERVER_ADDR_RUSSIAN=
+GO_SERVER_ADDR_GERMANY=
+GO_SERVER_ADDR_TEST=
+VAULT_SERVER_ADDR=
+SSH_PRIVATE_KEY_USER=
+SSH_PRIVATE_KEY_PATH=
+SSH_PUBLIC_KEY_PATH=
+SSH_CRT_FILE=
+MGRCTL_IMAGE=mois3y/mgrctl:latest
+DEBUG_MODE=false
+```
+
+Please fill in the fields with current data, write the path to the keys and certificate in full `/home/username/.ssh/id_ecdsa` and so on.
+For security reasons, server addresses and paths to keys are not indicated here.
+
+For your convenience, the config can be filled out interactively
+
+```console
+gogo --init
+```
+
+
+#### Usage
+
+- Get a temporary ssh certificate
+
+```console
+gogo --crt
+```
+
+- Check your connection to test servers in both locations
+
+```console
+gogo --test
+```
+
+- If the connection is successful, you can use the script. You are beautiful!
+
+
+#### Examples
+
+- Connect to BILLmanager 6 via ssh port 22 and interface port 443
+
+```console
+gogo --bill my.example.com
+```
+or
+```console
+gogo --bill my.example.com -p 22 -wp 443
+```
+
+- Connect to BILLmanager 6 again without generating an access key to the interface
+
+```console
+gogo --bill my.example.com --ssh
+```
+
+- Connect to DNSmanager 6 via ssh port 22 and interface port 1501
+
+```console
+gogo --dns my.example.com -p 22 -wp 1501
+```
+
+- Connect to DCImanager 6 via ssh port 2222 and interface 443 port
+
+```console
+gogo --dci vm.example.com -p 2222
+```
+
+- Connect to VMmanager 6 via ssh port 2222 and interface port 443
+
+```console
+gogo --vm 228.228.228.228 -p 2222
+```
+
+- Connect to VMmanager 6 via ssh port 22 and interface port 443, indicating the id of a specific user and generate 3 keys
+
+```console
+gogo --vm vm.example.com --mgrctl auth user access --id 1488 --count 1
+```
+
+- The same thing, just print the command that is executed on the server side into the console, you can run it later simply by copying it
+
+```console
+gogo --vm vm.example.com --tty --mgrctl auth user access --id 1488 --count 1
+```
+
+
+Connect to VMmanager 6 via ssh port 22 and interface port 443 via DE go3 server
+
+```console
+gogo --vm vm.example.com -p 22 --de
+```
+
+Connect to DCImanager 6 via ssh port 22 and interface port 443 via the old go method
+
+```console
+gogo --dci dci.example.com -p 22 --go
+```
+
+##### There are also examples in `help`
+
+```console
+gogo --help
+
+Usage: gogo [options [parameters]]
+
+Examples:
+
+gogo --init | init config file
+gogo --crt  | get ssh certificate for go3 connections
+gogo --test | check go3 connection availability
+
+gogo --bill my.example.com
+gogo --vm my.example.com --de  | connect throw DE go3 server
+gogo --vm 0.0.0.0 --ssh | only ssh access
+gogo --vm 0.0.0.0 --tty | use mgrctl interactive
+
+gogo --dci 0.0.0.0 --mgrctl auth user access --id 3 --count 5
+gogo --dci 0.0.0.0 --mgrctl auth user ls --admins
+gogo --vm 0.0.0.0 --port 22122 --mgrctl auth user ls --admins
+gogo --vm 0.0.0.0 --tty --mgrctl auth user ls --admins
+gogo --dns ns1.example.com --web-port 1501
+gogo --dns ns1.example.com --port 22122 --web-port 1501
+gogo --bill my.example.com --port 22 --web-port 1501
+
+Options:
+
+ --vm[dci|bill|dns|ip] expected ip_addr             required
+ --port     | -p    ssh port,   default 22
+ --web-port | -wp   web port,   default 443
+ --go/--go3         go version, default go3
+ --de               connect throw DE go3 server
+ --ssh              open only ssh session
+ --tty              for vm6/dci6 echo cmd for run container
+ --mgrctl [args]    for vm6/dci6 customize access params
+
+Single options:
+ --init     | -i    generate configuration
+ --crt      | -c    generate ssh cert
+ --test     | -t    check go3 connection availability
+ --version  | -v    print version
+ --help     | -h    print this message and exit
+```

mgrctl/api/base.py

@@ -7,6 +7,7 @@ import requests
 from time import sleep
 
 from mgrctl.settings.api import (
+    API_INPUT_PORT,
     API_URL,
     API_HEADERS,
     API_EMAIL,
@@ -14,6 +15,7 @@ from mgrctl.settings.api import (
     API_VERIFY_SSL,
     API_COUNT_TRY_CONNECTIONS
 )
+from mgrctl.settings.platform import PLATFORM_TYPE
 
 
 class BaseAPI(object):
@@ -33,6 +35,7 @@ class BaseAPI(object):
     def call_api(self, url, method='GET', headers={}, data={}):
         attempt = API_COUNT_TRY_CONNECTIONS
         while attempt:
+            attempt -= 1
             try:
                 uri = self._gen_request_url(url)
                 headers = self.API_HEADERS if not headers else headers
@@ -52,6 +55,17 @@ class BaseAPI(object):
                         verify=self.API_VERIFY_SSL
                     )
             except Exception as error:
+                ConnectionError = requests.exceptions.ConnectionError
+                if type(error) is ConnectionError and PLATFORM_TYPE == 'dci':
+                    # ? workaround if new docker version use dashes
+                    # TODO: ISPsystem developers must set container_name !!!
+                    self.API_URL = f'http://dci-input-1:{API_INPUT_PORT}'
+                    if attempt == 0:
+                        click.echo(f'Error: {type(error).__name__}')
+                        sys.exit()
+                    else:
+                        continue
+                else:
                     click.echo(f'Error: {type(error).__name__}')
                     sys.exit()
 
@@ -60,8 +74,6 @@ class BaseAPI(object):
 
             # Validate response:
             if self._error_handler(response):
-                attempt -= 1
-                sleep(2)  # wait 2 second timeout
                 continue  # new attempt connection
 
             return response
@@ -80,6 +92,7 @@ class BaseAPI(object):
 
     def _is_error_3004(self, error):
         if error.get('code') == 3004:
+            sleep(2)  # wait 2 second timeout
             return True
 
     def _error_handler(self, response):

mgrctl/settings/api.py

@@ -42,5 +42,6 @@ if not PLATFORM_VERIFY_SSL_WARNING:
 if PLATFORM_DUMMY:
     API_URL = PLATFORM_DUMMY_API_URL
     API_HEADERS = {'x-xsrf-token': PLATFORM_DUMMY_TOKEN}
+
 API_EMAIL = PLATFORM_DUMMY_EMAIL
 API_PASSWORD = PLATFORM_DUMMY_PASSWORD

mgrctl/settings/platform.py

@@ -22,14 +22,20 @@ PLATFORM_URL = env.str(
 # Development mode:
 PLATFORM_DUMMY = env.bool('PLATFORM_DUMMY', False)
 
-if PLATFORM_DUMMY:
 if PLATFORM_TYPE == 'vm':
     PLATFORM_DUMMY_API_URL = env.str('PLATFORM_DUMMY_VM6_API_URL', '')
     PLATFORM_DUMMY_EMAIL = env.str('PLATFORM_DUMMY_VM6_EMAIL', '')
     PLATFORM_DUMMY_PASSWORD = env.str('PLATFORM_DUMMY_VM6_PASSWORD', '')
     PLATFORM_DUMMY_TOKEN = env.str('PLATFORM_DUMMY_VM6_TOKEN', '')
-    if PLATFORM_TYPE == 'dci':
+elif PLATFORM_TYPE == 'dci':
     PLATFORM_DUMMY_API_URL = env.str('PLATFORM_DUMMY_DCI6_API_URL', '')
     PLATFORM_DUMMY_EMAIL = env.str('PLATFORM_DUMMY_DCI6_EMAIL', '')
     PLATFORM_DUMMY_PASSWORD = env.str('PLATFORM_DUMMY_DCI6_PASSWORD', '')
     PLATFORM_DUMMY_TOKEN = env.str('PLATFORM_DUMMY_DCI6_TOKEN', '')
+else:
+    # ? guarantees that constants exist for import
+    # ? if the user has set the wrong PLATFORM_TYPE:
+    PLATFORM_DUMMY_API_URL = env.str('PLATFORM_DUMMY_API_URL', '')
+    PLATFORM_DUMMY_EMAIL = env.str('PLATFORM_DUMMY_EMAIL', '')
+    PLATFORM_DUMMY_PASSWORD = env.str('PLATFORM_DUMMY_PASSWORD', '')
+    PLATFORM_DUMMY_TOKEN = env.str('PLATFORM_DUMMY_TOKEN', '')

scripts/gogo/gogo.sh

@@ -0,0 +1,512 @@
+#!/usr/bin/env bash
+
+# █▀▀ █▀█ █▀▀ █▀█ ▀
+# █▄█ █▄█ █▄█ █▄█ ▄
+# -- -- -- -- -- --
+
+# INIT GLOBAL VARIABLES:
+_VERSION="0.1.1"
+_SCRIPT_NAME="$(basename $0)"
+_GO_CMD="go3"
+_DEBUG_MODE=false
+
+_CONFIG_DIR="${HOME}/.config/gogo"
+_CONFIG="${_CONFIG_DIR}/gogo.conf"
+
+_IS_TTY=false
+_IS_SSH_ONLY=false
+_IS_MGRCTL_ARGS=false
+_MGRCTL_ARGS=""
+_MGRCTL_BIN="mgrctl"
+_MGRCTL_CMD=""
+_MGRCTL_RUN=""
+_MGRCTL_KEY=""
+
+_PLATFORM_TYPE=""
+_PLATFORM_GENERATION=6
+_PLATFORM_SSH_PORT=22
+_PLATFORM_WEB_PORT=443
+_PLATFORM_IP_ADDR=""
+_PLATFORM_CONFIG_FILE=""
+_PLATFORM_NETWORK_NAME=""
+
+_SSH_CONNECT_CMD=""
+_SSH_REMOTE_CMD=""
+
+_ACCESS_LINK=""
+
+
+# Colorize output
+# Usage - $(colorize CYAN "Hello, friend!")
+colorize() {
+	local RED="\033[0;31m"
+	local GREEN="\033[0;32m"  # <-- [0 means not bold
+	local YELLOW="\033[1;33m" # <-- [1 means bold
+	local BLUE="\033[0;34m"
+	local MAGNETA="\033[0;35"
+	local CYAN="\033[1;36m"
+	# ... Add more colors if you like
+
+	local NC="\033[0m" # No Color
+
+	# printf "${(P)1}${2} ${NC}\n" # <-- zsh
+	# printf "${!1}${2} ${NC}\n"   # <-- bash
+	echo -e "${!1}${2}${NC}"       # <-- all-purpose
+}
+
+
+# Print help message how used it script
+help() {
+	# colorize value
+	local script=$(colorize GREEN "$_SCRIPT_NAME")
+	local required=$(colorize RED "required")
+	# help message
+	printf "Usage: $script [options [parameters]]                              \n"
+	printf "                                                                   \n"
+	printf "Examples:                                                          \n"
+	printf "                                                                   \n"
+	printf "${script} --init | init config file                                \n"
+	printf "${script} --crt  | get ssh certificate for go3 connections         \n"
+	printf "${script} --test | check go3 connection availability               \n"
+	printf "                                                                   \n"
+	printf "${script} --bill my.example.com                                    \n"
+	printf "${script} --vm my.example.com --de  | connect throw DE go3 server  \n"
+	printf "${script} --vm 0.0.0.0 --ssh | only ssh access                     \n"
+	printf "${script} --vm 0.0.0.0 --tty | use mgrctl interactive              \n"
+	printf "                                                                   \n"
+	printf "${script} --dci 0.0.0.0 --mgrctl auth user access --id 3 --count 5 \n"
+	printf "${script} --dci 0.0.0.0 --mgrctl auth user ls --admins             \n"
+	printf "${script} --vm 0.0.0.0 --port 22122 --mgrctl auth user ls --admins \n"
+	printf "${script} --vm 0.0.0.0 --tty --mgrctl auth user ls --admins        \n"
+	printf "${script} --dns ns1.example.com --web-port 1501                    \n"
+	printf "${script} --dns ns1.example.com --port 22122 --web-port 1501       \n"
+	printf "${script} --bill my.example.com --port 22 --web-port 1501          \n"
+	printf "                                                                   \n"
+	printf "Options:                                                           \n"
+	printf "                                                                   \n"
+	printf " --vm[dci|bill|dns|ip] expected ip_addr             $required      \n"
+	printf " --port     | -p    ssh port,   default 22                         \n"
+	printf " --web-port | -wp   web port,   default 443                        \n"
+	printf " --go/--go3         go version, default go3                        \n"
+	printf " --de               connect throw DE go3 server                    \n"
+	printf " --ssh              open only ssh session                          \n"
+	printf " --tty              for vm6/dci6 echo cmd for run container        \n"
+	printf " --mgrctl [args]    for vm6/dci6 customize access params           \n"
+	printf "                                                                   \n"
+	printf "Single options:                                                    \n"
+	printf " --init     | -i    generate configuration                         \n"
+	printf " --crt      | -c    generate ssh cert                              \n"
+	printf " --test     | -t    check go3 connection availability              \n"
+	printf " --version  | -v    print version                                  \n"
+	printf " --help     | -h    print this message and exit                    \n"
+}
+
+# Ask confirmation user if No - exit with 1 state
+continue_handler() {
+	read -p "Continue? (Y/N): " confirm \
+	&& [[ $confirm == [yY] || $confirm == [yY][eE][sS] ]] || exit 1
+}
+
+# Init script configuration file:
+init_config() {
+	# Lables:
+	local warning=$(colorize RED "WARNING!")
+	local success=$(colorize GREEN "SUCCESS!")
+	local script_name=$(colorize GREEN "${_SCRIPT_NAME}")
+	# check if config file exists:
+	if [ -f $_CONFIG ]; then
+		echo "${warning} Config file is already exists"
+		echo "New initialization rewrites current config"
+		continue_handler
+	fi
+	# get user unputs:
+	read -p "Enter russian go server address: "    _GO_SERVER_ADDR_RUSSIAN
+	read -p "Enter germany go server address: "    _GO_SERVER_ADDR_GERMANY
+	read -p "Enter test go server address: "       _GO_SERVER_ADDR_TEST
+	read -p "Enter vault server address: "         _VAULT_SERVER_ADDR
+	read -p "Enter username: "                     _SSH_PRIVATE_KEY_USER
+	read -p "Enter full path to ssh private key: " _SSH_PRIVATE_KEY_PATH
+	read -p "Enter full path to ssh public key: "  _SSH_PUBLIC_KEY_PATH
+	read -p "Enter full path to ssh certificate: " _SSH_CRT_FILE
+	read -p "Enter mgrctl image name: "            _MGRCTL_IMAGE
+	# save config:
+	mkdir -p $_CONFIG_DIR
+	cat << EOF > "${_CONFIG}"
+GO_SERVER_ADDR_RUSSIAN=$_GO_SERVER_ADDR_RUSSIAN
+GO_SERVER_ADDR_GERMANY=$_GO_SERVER_ADDR_GERMANY
+GO_SERVER_ADDR_TEST=$_GO_SERVER_ADDR_TEST
+VAULT_SERVER_ADDR=$_VAULT_SERVER_ADDR
+SSH_PRIVATE_KEY_USER=$_SSH_PRIVATE_KEY_USER
+SSH_PRIVATE_KEY_PATH=$_SSH_PRIVATE_KEY_PATH
+SSH_PUBLIC_KEY_PATH=$_SSH_PUBLIC_KEY_PATH
+SSH_CRT_FILE=$_SSH_CRT_FILE
+MGRCTL_IMAGE=$_MGRCTL_IMAGE
+DEBUG_MODE=false
+EOF
+	echo ""
+	echo "${success} Config file was created, run ${script_name} again"
+	echo ""
+}
+
+
+# Read config file that contains key=value params
+load_config() {
+	local file="$_CONFIG"
+
+	if ! [ -f $_CONFIG ]; then
+		help
+		local warning=$(colorize RED "WARNING!")
+		echo ""
+		echo "${warning} Config file doesn't exist"
+		echo "Init new config: ${_CONFIG}"
+		continue_handler
+		init_config
+	fi
+	
+	while IFS="=" read -r key value; do
+		case "$key" in
+			"GO_SERVER_ADDR_RUSSIAN")
+				_GO_SERVER_ADDR_RUSSIAN="$value"
+				_GO_SERVER_ADDR="$value"
+				;;
+			"GO_SERVER_ADDR_GERMANY")
+				_GO_SERVER_ADDR_GERMANY="$value"
+				;;
+			"GO_SERVER_ADDR_TEST")
+				_GO_SERVER_ADDR_TEST="$value"
+				;;
+			"VAULT_SERVER_ADDR")
+				_VAULT_SERVER_ADDR="$value"
+				;;
+			"SSH_PRIVATE_KEY_USER")
+				_SSH_PRIVATE_KEY_USER="$value"
+				;;
+			"SSH_PRIVATE_KEY_PATH")
+				_SSH_PRIVATE_KEY_PATH="$value"
+				;;
+			"SSH_PUBLIC_KEY_PATH")
+				_SSH_PUBLIC_KEY_PATH="$value"
+				_VAULT_SSH_PUBLIC_KEY="@$value"  # @ sybol is important
+				;;
+			"SSH_CRT_FILE")
+				_SSH_CRT_FILE="$value"
+				;;
+			"MGRCTL_IMAGE")
+				_MGRCTL_IMAGE="$value"
+				;;
+			"DEBUG_MODE")
+				_DEBUG_MODE="$value"
+				;;
+		esac
+	done < "$file"
+}
+
+# Generate key for coremgr based platrorms access link:
+gen_random_key() {
+	_MGRCTL_KEY=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
+}
+
+
+gen_coremgr_access_params() {
+	# get opt name:
+	local opt=$1
+	# gen access key:
+	gen_random_key
+	# fill current parametrs:
+	_PLATFORM_TYPE=$(sed 's~[^[:alpha:]/]\+~~g' <<< "$opt")
+	_PLATFORM_GENERATION=5
+	_MGRCTL_BIN="/usr/local/mgr5/sbin/mgrctl"
+	_MGRCTL_ARGS="-m ${_PLATFORM_TYPE}mgr session.newkey key=$_MGRCTL_KEY"	
+
+	# override _PLATFORM_GENERATION for bill6 or dns6
+	if [[ $opt == "--bill" ]] || [[ $opt == "--dns" ]]; then
+		_PLATFORM_GENERATION=6
+	fi
+	# override _MGRCTL_BIN _MGRCTL_ARGS for dns6
+	if [[ $opt == "--dns" ]]; then
+		_MGRCTL_BIN="/opt/ispsystem/${_PLATFORM_TYPE}manager6/sbin/mgrctl"
+		_MGRCTL_ARGS="-m ${_PLATFORM_TYPE}mgr session.newkey key=$_MGRCTL_KEY"	
+	fi
+}
+
+
+gen_docker_access_params(){
+	# get opt name:
+	local opt=$1
+	# fill current parametrs:
+	_PLATFORM_TYPE=$(sed 's~[^[:alpha:]/]\+~~g' <<< "$opt")
+	_PLATFORM_GENERATION=6
+	_PLATFORM_CONFIG_FILE="/opt/ispsystem/${_PLATFORM_TYPE}/config.json"
+	# set platform docker network name:
+	if [[ $_PLATFORM_TYPE == "vm" ]]; then
+		_PLATFORM_NETWORK_NAME="vm_vm_box_net"
+	else
+		_PLATFORM_NETWORK_NAME="dci_auth"
+	fi
+}
+
+
+gen_ssh_connect_cmd(){
+	# get params:
+	local go_server="${_GO_SERVER_ADDR}"
+	local go_cmd="${_GO_CMD}"
+	local address="${_PLATFORM_IP_ADDR}"
+	local port="${_PLATFORM_SSH_PORT}"
+	local key_path="${_SSH_PRIVATE_KEY_PATH}"
+	local key_user="${_SSH_PRIVATE_KEY_USER}"
+	local ssh_args="${key_user}@${go_server} ${go_cmd} ${address} -p ${port}"
+	# generate cmd:
+	_SSH_CONNECT_CMD="ssh -A -t -i ${key_path} ${ssh_args}"
+}
+
+
+gen_ssh_remote_cmd() {
+	# ? VMmanager6 || DCImanager6:
+	if [[ $_PLATFORM_TYPE == "vm" ]] || \
+		[[ $_PLATFORM_TYPE == "dci" ]] && \
+		[[ $_PLATFORM_GENERATION -eq 6 ]]; then
+		# use default mgrctl cmd if not set args:
+		if [ -z "${_MGRCTL_ARGS}" ]; then
+			_MGRCTL_ARGS="${_PLATFORM_TYPE}6 auth user access --random"
+			_MGRCTL_CMD="${_MGRCTL_BIN} ${_MGRCTL_ARGS}"
+		else
+			_MGRCTL_CMD="${_MGRCTL_BIN} ${_PLATFORM_TYPE}6 ${_MGRCTL_ARGS}"
+		fi
+		# silent mode:
+		local hide_output=">> /dev/null"
+		if $_DEBUG_MODE; then
+			hide_output=""
+		fi
+		# image:
+		local image=${_MGRCTL_IMAGE}
+		# docker cmd:
+		local docker_bin="/usr/bin/docker"
+		local docker_pull="${docker_bin} pull ${image} ${hide_output}"
+		local docker_rm="${docker_bin} image rm -f ${image} ${hide_output}"
+		local docker_run="${docker_bin} run"
+		# mount config:
+		local mount_src="source=${_PLATFORM_CONFIG_FILE}"
+		local mount_trg="target=${_PLATFORM_CONFIG_FILE}"
+		local mount_opt="type=bind,${mount_src},${mount_trg},readonly"
+		local mount="--mount ${mount_opt}"
+		# network config:
+		local network="--network=${_PLATFORM_NETWORK_NAME}"
+		# environment config:
+		local envs="-e PLATFORM_TYPE=${_PLATFORM_TYPE}"
+		# container args:
+		local args="${_MGRCTL_CMD}"
+		# mgrctl container params:
+		local container="${network} ${mount} ${envs} --rm ${image} ${args}"
+		# docker commands:
+		local cmd="${docker_pull} && ${docker_run} ${container} && ${docker_rm}"
+		# final cmd:
+		_SSH_REMOTE_CMD="${cmd}"
+		# set cmd for manual start container:
+		if $_IS_TTY; then
+			# override parammetrs if DEBUG_MODE=false add -it flag:
+			docker_pull="${docker_bin} pull ${image}"
+			docker_rm="${docker_bin} image rm -f ${image}"
+			container="${network} ${mount} ${envs} --rm -i -t ${image}"
+			cmd="${docker_pull} && ${docker_run} ${container} && ${docker_rm}"
+			_MGRCTL_RUN="${cmd}"
+		fi
+	# ? BILLmanager6 ||  DNSmanager6 || IP/DNS/DCI/VMmanager5:
+	else 
+		# final cmd:
+		_SSH_REMOTE_CMD="${_MGRCTL_BIN} ${_MGRCTL_ARGS}"
+		echo_access_link
+	fi
+}
+
+
+gen_access_link() {
+	local url="https://${_PLATFORM_IP_ADDR}"
+	local port="${_PLATFORM_WEB_PORT}"
+	local platform="${_PLATFORM_TYPE}mgr"
+	local func="func=auth&key=${_MGRCTL_KEY}"
+	_ACCESS_LINK="${url}:${port}/${platform}?${func}"
+}
+
+
+echo_access_link() {
+	gen_access_link
+	echo "mgr    link"
+	echo "-----  -------------------------------------------------------------"
+	echo "${_PLATFORM_TYPE}${_PLATFORM_GENERATION}  ${_ACCESS_LINK}"
+	echo ""
+}
+
+echo_mgrctl_run_msg() {
+	echo "--------------------------------------------------------------------"
+	echo "To run the mgrctl container manually on the client server:" 
+	echo "copy and paste the command into the terminal."
+	echo "This will download the image and run the container interactively."
+	echo "After exiting the container and its image will be deleted."
+	echo "--------------------------------------------------------------------"
+	echo "${_MGRCTL_RUN}"
+	echo "--------------------------------------------------------------------"
+}
+
+
+get_access() {
+	gen_ssh_connect_cmd
+	if $_IS_SSH_ONLY; then
+		# run connection:
+		$_SSH_CONNECT_CMD
+	else
+		gen_ssh_remote_cmd
+		# run connection send remote cmd:
+		$_SSH_CONNECT_CMD "${_SSH_REMOTE_CMD}"
+		if [[ $_PLATFORM_TYPE == "vm" ]] || \
+			[[ $_PLATFORM_TYPE == "dci" ]] && \
+			[[ $_PLATFORM_GENERATION -eq 6 ]] && \
+			$_IS_TTY; then
+			echo_mgrctl_run_msg
+		fi
+		# use default mgrctl cmd if not set args:
+		# run connection again for ssh tty session:
+		$_SSH_CONNECT_CMD
+	fi
+}
+
+
+get_vault_crt() {
+	local public_key=$1
+	local crt_file=$2
+	vault login -method=oidc
+	if [ ! -f $crt_file ]; then
+		touch $crt_file
+	fi
+	vault write -field=signed_key ssh/sign/support \
+	public_key=$public_key valid_principals=root > $crt_file
+}
+
+
+set_ssh_agent() {
+	local secret_key=$1
+	ssh-add -D
+	ssh-add $secret_key
+}
+
+
+renewal_crt() {
+	export VAULT_ADDR=$_VAULT_SERVER_ADDR
+	get_vault_crt $_VAULT_SSH_PUBLIC_KEY $_SSH_CRT_FILE
+	set_ssh_agent $_SSH_PRIVATE_KEY_PATH
+}
+
+
+test_go3_connection() {
+	# force only ssh connections without platform features:
+	_IS_SSH_ONLY=true
+	# set fake client address:
+	_PLATFORM_IP_ADDR="${_GO_SERVER_ADDR_TEST}"
+	_PLATFORM_SSH_PORT=22
+
+	echo "Run TEST: $_GO_SERVER_ADDR_RUSSIAN connection"
+	get_access
+
+	echo "-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --"
+
+	echo "Run TEST: $_GO_SERVER_ADDR_GERMANY connection"
+	_GO_SERVER_ADDR="${_GO_SERVER_ADDR_GERMANY}"
+	get_access
+}
+
+
+# Parse user options
+optparser() {
+	# count user-passed options:
+	local count_options=$#
+	# run help if empty and exit:
+	if [[ count_options -eq 0 ]]; then
+		help
+		exit 2
+	fi
+	# run init config if flag --init and exit:
+	if [[ "$1" == "--init" ]]; then
+		init_config
+		exit 0
+	fi
+	# load config from config file:
+	load_config
+	# parse opts:
+	while [ ! -z "$1" ]; do
+		case "$1" in
+			--vm|--dci)
+				gen_docker_access_params "$1"
+				shift
+				_PLATFORM_IP_ADDR="$1"
+				;;
+			--bill|--dns|--bill5|--ip5|--dns5|--vm5|--dci5)
+				gen_coremgr_access_params "$1"
+				shift
+				_PLATFORM_IP_ADDR="$1"
+				;;
+			--port|-p)
+				shift
+				_PLATFORM_SSH_PORT="$1"
+				;;
+			--web-port|-wp)
+				shift
+				_PLATFORM_WEB_PORT="$1"
+				;;
+			--go|--go3)
+				_GO_CMD=$(sed 's~[^[:alnum:]/]\+~~g' <<< "$1")
+				;;
+			--de)
+				_GO_SERVER_ADDR="${_GO_SERVER_ADDR_GERMANY}"
+				;;
+			--mgrctl|--tty|--ssh)
+				if [[ "$1" == "--mgrctl" ]]; then
+					_IS_MGRCTL_ARGS=true
+					shift
+					_MGRCTL_ARGS=$@
+				elif [[ "$1" == "--tty" ]]; then
+					if $_IS_MGRCTL_ARGS; then
+						local error=$(colorize RED "ERROR!")
+						echo "${error} $1 must be in before --mgrctl not after"
+						exit 1
+					fi
+					_IS_TTY=true
+				elif [[ "$1" == "--ssh" ]]; then
+					_IS_SSH_ONLY=true
+				fi
+				;;
+			--crt|-c)
+				renewal_crt
+				exit 0
+				;;
+			--test|-t)
+				test_go3_connection
+				exit 0
+				;;
+			--help|-h)
+				help
+				exit 0
+				;;
+			--version|-v)
+				printf "$_VERSION\n"
+				exit 0
+				;;
+			*)
+				if ! $_IS_MGRCTL_ARGS; then
+					help
+					exit 1
+				fi
+				;;
+		esac
+	shift
+	done
+}
+
+
+# Entrypoint:
+main() {
+	optparser $@
+	get_access
+}
+
+
+# RUN IT:
+main $@