Can't open PID file /run/openvpn/client.pid (yet?) after start: Operation not permitted in VPN client configuration in imx6ull

Technical Support
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1

Hello Toradex Community,
I am using imx6ull Aster Carrier Board with TDX Wayland with XWayland Upstream 6.7.0-devel-20240710125113+build.0 (kirkstone) Colibri-iMX6ULL-eMMC_Reference-Multimedia-Image-upstream tdx-reference-multimedia-image (OS)

I want to interface VPN (openvpn) for that i used this reference link but i am unable to configure client. following are the logs of systemctl status openvpn@client command:

× openvpn@client.service - OpenVPN Robust And Highly Flexible Tunneling Application On client
     Loaded: loaded (/lib/systemd/system/openvpn@.service; enabled; vendor preset: disabled)
     Active: failed (Result: exit-code) since Mon 2024-09-02 04:27:27 UTC; 1h 8min ago
    Process: 748 ExecStart=/usr/sbin/openvpn --daemon --writepid /run/openvpn/client.pid --cd /etc/openvpn/ --cipher AES-256-GCM --data-ciphers AES-256-GCM:AES-128-GCM:AES-256-CBC:AES-128-CBC:BF-CBC --c>
   Main PID: 749 (code=exited, status=1/FAILURE)

Sep 02 04:27:27 colibri-imx6ull-emmc-07324251 systemd[1]: Starting OpenVPN Robust And Highly Flexible Tunneling Application On client...
Sep 02 04:27:27 colibri-imx6ull-emmc-07324251 systemd[1]: openvpn@client.service: Can't open PID file /run/openvpn/client.pid (yet?) after start: Operation not permitted
Sep 02 04:27:27 colibri-imx6ull-emmc-07324251 systemd[1]: Started OpenVPN Robust And Highly Flexible Tunneling Application On client.
Sep 02 04:27:27 colibri-imx6ull-emmc-07324251 systemd[1]: openvpn@client.service: Main process exited, code=exited, status=1/FAILURE
Sep 02 04:27:27 colibri-imx6ull-emmc-07324251 systemd[1]: openvpn@client.service: Failed with result 'exit-code'.

I checked ownership and permission mode of the directory and files everything seems perfeect.

2

Hi, I’m the Toradex AI Assistant. I’m in early beta, and I would appreciate your feedback.
The Toradex Support team will follow up with you shortly!

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The error message “Can’t open PID file /run/openvpn/client.pid (yet?) after start: Operation not permitted” suggests that there might be a permissions issue or a problem with the OpenVPN service configuration. Here are a few steps you can take to troubleshoot and resolve this issue:

  1. Check Directory Permissions:
    Ensure that the /run/openvpn/ directory exists and has the correct permissions. The OpenVPN process needs to be able to write to this directory.

    sudo mkdir -p /run/openvpn
sudo chown openvpn:openvpn /run/openvpn
sudo chmod 755 /run/openvpn

  2. Verify OpenVPN Configuration:
    Double-check your OpenVPN client configuration file (/etc/openvpn/client.conf) to ensure that all paths and settings are correct.

  3. Check SELinux/AppArmor:
    If SELinux or AppArmor is enabled, it might be preventing OpenVPN from writing to the PID file. You can check the status of SELinux with:

    sudo getenforce

    If it is enforcing, you can temporarily set it to permissive mode to see if it resolves the issue:

    sudo setenforce 0

    For AppArmor, you can check the status with:

    sudo aa-status

    If AppArmor is enforcing, you might need to adjust the profile for OpenVPN or disable it temporarily.

  4. Check Systemd Service File:
    Ensure that the systemd service file for OpenVPN (/lib/systemd/system/openvpn@.service) is correctly configured. Specifically, check the ExecStart line to ensure it points to the correct OpenVPN binary and configuration file.

  5. Run OpenVPN Manually:
    Try running OpenVPN manually to see if it provides more detailed error messages:

    sudo openvpn --config /etc/openvpn/client.conf

    This can help identify if there are any issues with the configuration file itself.

  6. Check Logs:
    Review the system logs for any additional error messages that might provide more context. You can use journalctl to view the logs:

    sudo journalctl -u openvpn@client.service

If you have followed these steps and the issue persists, please provide any additional error messages or logs that you find

3

Permissions and OpenVPN Configuration are perfect. SELinux/AppArmor is not installed in OS. Service file is correctly configured.
Here are the logs of openvpn command:

openvpn --config /etc/openvpn/client.conf
2024-09-02 06:08:45 us=661391 DEPRECATED OPTION: --cipher set to 'AES-256-CBC' but missing in --data-ciphers (AES-256-GCM:AES-128-GCM). Future OpenVPN version will ignore --cipher for cipher negotiations. Add 'AES-256-CBC' to --data-ciphers or change --cipher 'AES-256-CBC' to --data-ciphers-fallback 'AES-256-CBC' to silence this warning.
2024-09-02 06:08:45 us=664028 Current Parameter Settings:
2024-09-02 06:08:45 us=665379   config = '/etc/openvpn/client.conf'
2024-09-02 06:08:45 us=666344   mode = 0
2024-09-02 06:08:45 us=667159   persist_config = DISABLED
2024-09-02 06:08:45 us=667777   persist_mode = 1
2024-09-02 06:08:45 us=668633   show_ciphers = DISABLED
2024-09-02 06:08:45 us=669188   show_digests = DISABLED
2024-09-02 06:08:45 us=670045   show_engines = DISABLED
2024-09-02 06:08:45 us=670884   genkey = DISABLED
2024-09-02 06:08:45 us=671460   genkey_filename = '[UNDEF]'
2024-09-02 06:08:45 us=672316   key_pass_file = '[UNDEF]'
2024-09-02 06:08:45 us=673085   show_tls_ciphers = DISABLED
2024-09-02 06:08:45 us=673720   connect_retry_max = 0
2024-09-02 06:08:45 us=674575 Connection profiles [0]:
2024-09-02 06:08:45 us=675506   proto = udp
2024-09-02 06:08:45 us=676167   local = '[UNDEF]'
2024-09-02 06:08:45 us=677054   local_port = '[UNDEF]'
2024-09-02 06:08:45 us=677623   remote = '103.105.233.156'
2024-09-02 06:08:45 us=678463   remote_port = '1194'
2024-09-02 06:08:45 us=679299   remote_float = DISABLED
2024-09-02 06:08:45 us=679879   bind_defined = DISABLED
2024-09-02 06:08:45 us=680598   bind_local = DISABLED
2024-09-02 06:08:45 us=681047   bind_ipv6_only = DISABLED
2024-09-02 06:08:45 us=681723   connect_retry_seconds = 5
2024-09-02 06:08:45 us=681959   connect_timeout = 120
2024-09-02 06:08:45 us=682365   socks_proxy_server = '[UNDEF]'
2024-09-02 06:08:45 us=683181   socks_proxy_port = '[UNDEF]'
2024-09-02 06:08:45 us=683601   tun_mtu = 1500
2024-09-02 06:08:45 us=684435   tun_mtu_defined = ENABLED
2024-09-02 06:08:45 us=685480   link_mtu = 1500
2024-09-02 06:08:45 us=686282   link_mtu_defined = DISABLED
2024-09-02 06:08:45 us=686932   tun_mtu_extra = 0
2024-09-02 06:08:45 us=687780   tun_mtu_extra_defined = DISABLED
2024-09-02 06:08:45 us=688347   mtu_discover_type = -1
2024-09-02 06:08:45 us=689227   fragment = 0
2024-09-02 06:08:45 us=690045   mssfix = 1450
2024-09-02 06:08:45 us=690504   explicit_exit_notification = 0
2024-09-02 06:08:45 us=691154   tls_auth_file = '[INLINE]'
2024-09-02 06:08:45 us=691651   key_direction = 1
2024-09-02 06:08:45 us=692471   tls_crypt_file = '[UNDEF]'
2024-09-02 06:08:45 us=692724   tls_crypt_v2_file = '[UNDEF]'
2024-09-02 06:08:45 us=693103 Connection profiles END
2024-09-02 06:08:45 us=693579   remote_random = DISABLED
2024-09-02 06:08:45 us=694082   ipchange = '[UNDEF]'
2024-09-02 06:08:45 us=694986   dev = 'tun'
2024-09-02 06:08:45 us=695252   dev_type = '[UNDEF]'
2024-09-02 06:08:45 us=695429   dev_node = '[UNDEF]'
2024-09-02 06:08:45 us=696109   lladdr = '[UNDEF]'
2024-09-02 06:08:45 us=696336   topology = 1
2024-09-02 06:08:45 us=696505   ifconfig_local = '[UNDEF]'
2024-09-02 06:08:45 us=697151   ifconfig_remote_netmask = '[UNDEF]'
2024-09-02 06:08:45 us=697793   ifconfig_noexec = DISABLED
2024-09-02 06:08:45 us=698452   ifconfig_nowarn = DISABLED
2024-09-02 06:08:45 us=698931   ifconfig_ipv6_local = '[UNDEF]'
2024-09-02 06:08:45 us=699569   ifconfig_ipv6_netbits = 0
2024-09-02 06:08:45 us=700209   ifconfig_ipv6_remote = '[UNDEF]'
2024-09-02 06:08:45 us=700884   shaper = 0
2024-09-02 06:08:45 us=701320   mtu_test = 0
2024-09-02 06:08:45 us=701534   mlock = DISABLED
2024-09-02 06:08:45 us=702215   keepalive_ping = 0
2024-09-02 06:08:45 us=702439   keepalive_timeout = 0
2024-09-02 06:08:45 us=702839   inactivity_timeout = 0
2024-09-02 06:08:45 us=703647   inactivity_minimum_bytes = 0
2024-09-02 06:08:45 us=704072   ping_send_timeout = 0
2024-09-02 06:08:45 us=705043   ping_rec_timeout = 0
2024-09-02 06:08:45 us=705777   ping_rec_timeout_action = 0
2024-09-02 06:08:45 us=706274   ping_timer_remote = DISABLED
2024-09-02 06:08:45 us=706984   remap_sigusr1 = 0
2024-09-02 06:08:45 us=707206   persist_tun = ENABLED
2024-09-02 06:08:45 us=707609   persist_local_ip = DISABLED
2024-09-02 06:08:45 us=708426   persist_remote_ip = DISABLED
2024-09-02 06:08:45 us=709223   persist_key = ENABLED
2024-09-02 06:08:45 us=709477   passtos = DISABLED
2024-09-02 06:08:45 us=709899   resolve_retry_seconds = 1000000000
2024-09-02 06:08:45 us=710590   resolve_in_advance = DISABLED
2024-09-02 06:08:45 us=710840   username = '[UNDEF]'
2024-09-02 06:08:45 us=711013   groupname = '[UNDEF]'
2024-09-02 06:08:45 us=711826   chroot_dir = '[UNDEF]'
2024-09-02 06:08:45 us=712275   cd_dir = '[UNDEF]'
2024-09-02 06:08:45 us=712973   writepid = '[UNDEF]'
2024-09-02 06:08:45 us=713197   up_script = '[UNDEF]'
2024-09-02 06:08:45 us=713609   down_script = '[UNDEF]'
2024-09-02 06:08:45 us=714466   down_pre = DISABLED
2024-09-02 06:08:45 us=715480   up_restart = DISABLED
2024-09-02 06:08:45 us=715941   up_delay = DISABLED
2024-09-02 06:08:45 us=720672   daemon = DISABLED
2024-09-02 06:08:45 us=721383   inetd = 0
2024-09-02 06:08:45 us=725858   log = DISABLED
2024-09-02 06:08:45 us=727512   suppress_timestamps = DISABLED
2024-09-02 06:08:45 us=727686   machine_readable_output = DISABLED
2024-09-02 06:08:45 us=727774   nice = 0
2024-09-02 06:08:45 us=727840   verbosity = 5
2024-09-02 06:08:45 us=727906   mute = 0
2024-09-02 06:08:45 us=727971   gremlin = 0
2024-09-02 06:08:45 us=728035   status_file = '[UNDEF]'
2024-09-02 06:08:45 us=728097   status_file_version = 1
2024-09-02 06:08:45 us=728162   status_file_update_freq = 60
2024-09-02 06:08:45 us=728229   occ = ENABLED
2024-09-02 06:08:45 us=728295   rcvbuf = 0
2024-09-02 06:08:45 us=728364   sndbuf = 0
2024-09-02 06:08:45 us=728427   mark = 0
2024-09-02 06:08:45 us=728481   sockflags = 0
2024-09-02 06:08:45 us=728537   fast_io = DISABLED
2024-09-02 06:08:45 us=728595   comp.alg = 0
2024-09-02 06:08:45 us=728654   comp.flags = 0
2024-09-02 06:08:45 us=728710   route_script = '[UNDEF]'
2024-09-02 06:08:45 us=728767   route_default_gateway = '[UNDEF]'
2024-09-02 06:08:45 us=728828   route_default_metric = 0
2024-09-02 06:08:45 us=728885   route_noexec = DISABLED
2024-09-02 06:08:45 us=728944   route_delay = 0
2024-09-02 06:08:45 us=729004   route_delay_window = 30
2024-09-02 06:08:45 us=729060   route_delay_defined = DISABLED
2024-09-02 06:08:45 us=729119   route_nopull = DISABLED
2024-09-02 06:08:45 us=729177   route_gateway_via_dhcp = DISABLED
2024-09-02 06:08:45 us=729234   allow_pull_fqdn = DISABLED
2024-09-02 06:08:45 us=729297   management_addr = '[UNDEF]'
2024-09-02 06:08:45 us=729357   management_port = '[UNDEF]'
2024-09-02 06:08:45 us=729412   management_user_pass = '[UNDEF]'
2024-09-02 06:08:45 us=729472   management_log_history_cache = 250
2024-09-02 06:08:45 us=729531   management_echo_buffer_size = 100
2024-09-02 06:08:45 us=729590   management_write_peer_info_file = '[UNDEF]'
2024-09-02 06:08:45 us=729651   management_client_user = '[UNDEF]'
2024-09-02 06:08:45 us=729716   management_client_group = '[UNDEF]'
2024-09-02 06:08:45 us=729775   management_flags = 0
2024-09-02 06:08:45 us=729834   shared_secret_file = '[UNDEF]'
2024-09-02 06:08:45 us=729893   key_direction = 1
2024-09-02 06:08:45 us=729951   ciphername = 'AES-256-CBC'
2024-09-02 06:08:45 us=730009   ncp_enabled = ENABLED
2024-09-02 06:08:45 us=730067   ncp_ciphers = 'AES-256-GCM:AES-128-GCM:AES-256-CBC'
2024-09-02 06:08:45 us=730124   authname = 'SHA1'
2024-09-02 06:08:45 us=730186   prng_hash = 'SHA1'
2024-09-02 06:08:45 us=730245   prng_nonce_secret_len = 16
2024-09-02 06:08:45 us=730303   keysize = 0
2024-09-02 06:08:45 us=730362   engine = DISABLED
2024-09-02 06:08:45 us=730419   replay = ENABLED
2024-09-02 06:08:45 us=730479   mute_replay_warnings = DISABLED
2024-09-02 06:08:45 us=730541   replay_window = 64
2024-09-02 06:08:45 us=730600   replay_time = 15
2024-09-02 06:08:45 us=730657   packet_id_file = '[UNDEF]'
2024-09-02 06:08:45 us=730720   test_crypto = DISABLED
2024-09-02 06:08:45 us=730777   tls_server = DISABLED
2024-09-02 06:08:45 us=730835   tls_client = ENABLED
2024-09-02 06:08:45 us=730895   ca_file = '/etc/openvpn/ca.crt'
2024-09-02 06:08:45 us=730953   ca_path = '[UNDEF]'
2024-09-02 06:08:45 us=731011   dh_file = '[UNDEF]'
2024-09-02 06:08:45 us=731069   cert_file = '/etc/openvpn/ASTER.crt'
2024-09-02 06:08:45 us=731127   extra_certs_file = '[UNDEF]'
2024-09-02 06:08:45 us=731187   priv_key_file = '/etc/openvpn/ASTER.key'
2024-09-02 06:08:45 us=731248   pkcs12_file = '[UNDEF]'
2024-09-02 06:08:45 us=731307   cipher_list = '[UNDEF]'
2024-09-02 06:08:45 us=731365   cipher_list_tls13 = '[UNDEF]'
2024-09-02 06:08:45 us=731422   tls_cert_profile = '[UNDEF]'
2024-09-02 06:08:45 us=731481   tls_verify = '[UNDEF]'
2024-09-02 06:08:45 us=731539   tls_export_cert = '[UNDEF]'
2024-09-02 06:08:45 us=731595   verify_x509_type = 0
2024-09-02 06:08:45 us=731653   verify_x509_name = '[UNDEF]'
2024-09-02 06:08:45 us=731711   crl_file = '[UNDEF]'
2024-09-02 06:08:45 us=731772   ns_cert_type = 0
2024-09-02 06:08:45 us=731830   remote_cert_ku[i] = 65535
2024-09-02 06:08:45 us=731887   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=731942   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=731995   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732053   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732108   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732169   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732226   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732285   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732343   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732401   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732457   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732511   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732566   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732622   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732681   remote_cert_ku[i] = 0
2024-09-02 06:08:45 us=732740   remote_cert_eku = 'TLS Web Server Authentication'
2024-09-02 06:08:45 us=732799   ssl_flags = 0
2024-09-02 06:08:45 us=732857   tls_timeout = 2
2024-09-02 06:08:45 us=732915   renegotiate_bytes = -1
2024-09-02 06:08:45 us=732973   renegotiate_packets = 0
2024-09-02 06:08:45 us=733029   renegotiate_seconds = 3600
2024-09-02 06:08:45 us=733085   handshake_window = 60
2024-09-02 06:08:45 us=733142   transition_window = 3600
2024-09-02 06:08:45 us=733201   single_session = DISABLED
2024-09-02 06:08:45 us=733260   push_peer_info = DISABLED
2024-09-02 06:08:45 us=733316   tls_exit = DISABLED
2024-09-02 06:08:45 us=733371   tls_crypt_v2_metadata = '[UNDEF]'
2024-09-02 06:08:45 us=733437   server_network = 0.0.0.0
2024-09-02 06:08:45 us=733502   server_netmask = 0.0.0.0
2024-09-02 06:08:45 us=733644   server_network_ipv6 = ::
2024-09-02 06:08:45 us=733733   server_netbits_ipv6 = 0
2024-09-02 06:08:45 us=733796   server_bridge_ip = 0.0.0.0
2024-09-02 06:08:45 us=733862   server_bridge_netmask = 0.0.0.0
2024-09-02 06:08:45 us=733927   server_bridge_pool_start = 0.0.0.0
2024-09-02 06:08:45 us=733991   server_bridge_pool_end = 0.0.0.0
2024-09-02 06:08:45 us=734050   ifconfig_pool_defined = DISABLED
2024-09-02 06:08:45 us=734115   ifconfig_pool_start = 0.0.0.0
2024-09-02 06:08:45 us=734178   ifconfig_pool_end = 0.0.0.0
2024-09-02 06:08:45 us=734242   ifconfig_pool_netmask = 0.0.0.0
2024-09-02 06:08:45 us=734303   ifconfig_pool_persist_filename = '[UNDEF]'
2024-09-02 06:08:45 us=734363   ifconfig_pool_persist_refresh_freq = 600
2024-09-02 06:08:45 us=734421   ifconfig_ipv6_pool_defined = DISABLED
2024-09-02 06:08:45 us=734481   ifconfig_ipv6_pool_base = ::
2024-09-02 06:08:45 us=734541   ifconfig_ipv6_pool_netbits = 0
2024-09-02 06:08:45 us=734599   n_bcast_buf = 256
2024-09-02 06:08:45 us=734667   tcp_queue_limit = 64
2024-09-02 06:08:45 us=737319   real_hash_size = 256
2024-09-02 06:08:45 us=737938   virtual_hash_size = 256
2024-09-02 06:08:45 us=738938   client_connect_script = '[UNDEF]'
2024-09-02 06:08:45 us=739501   learn_address_script = '[UNDEF]'
2024-09-02 06:08:45 us=740392   client_disconnect_script = '[UNDEF]'
2024-09-02 06:08:45 us=741241   client_config_dir = '[UNDEF]'
2024-09-02 06:08:45 us=741807   ccd_exclusive = DISABLED
2024-09-02 06:08:45 us=742652   tmp_dir = '/tmp'
2024-09-02 06:08:45 us=743413   push_ifconfig_defined = DISABLED
2024-09-02 06:08:45 us=744654   push_ifconfig_local = 0.0.0.0
2024-09-02 06:08:45 us=745428   push_ifconfig_remote_netmask = 0.0.0.0
2024-09-02 06:08:45 us=746304   push_ifconfig_ipv6_defined = DISABLED
2024-09-02 06:08:45 us=747203   push_ifconfig_ipv6_local = ::/0
2024-09-02 06:08:45 us=747835   push_ifconfig_ipv6_remote = ::
2024-09-02 06:08:45 us=748766   enable_c2c = DISABLED
2024-09-02 06:08:45 us=749617   duplicate_cn = DISABLED
2024-09-02 06:08:45 us=750190   cf_max = 0
2024-09-02 06:08:45 us=751042   cf_per = 0
2024-09-02 06:08:45 us=751812   max_clients = 1024
2024-09-02 06:08:45 us=752449   max_routes_per_client = 256
2024-09-02 06:08:45 us=753798   auth_user_pass_verify_script = '[UNDEF]'
2024-09-02 06:08:45 us=754822   auth_user_pass_verify_script_via_file = DISABLED
2024-09-02 06:08:45 us=755763   auth_token_generate = DISABLED
2024-09-02 06:08:45 us=756346   auth_token_lifetime = 0
2024-09-02 06:08:45 us=757197   auth_token_secret_file = '[UNDEF]'
2024-09-02 06:08:45 us=758047   port_share_host = '[UNDEF]'
2024-09-02 06:08:45 us=758617   port_share_port = '[UNDEF]'
2024-09-02 06:08:45 us=759464   vlan_tagging = DISABLED
2024-09-02 06:08:45 us=760265   vlan_accept = all
2024-09-02 06:08:45 us=760905   vlan_pvid = 1
2024-09-02 06:08:45 us=761609   client = ENABLED
2024-09-02 06:08:45 us=762061   pull = ENABLED
2024-09-02 06:08:45 us=762703   auth_user_pass_file = '[UNDEF]'
2024-09-02 06:08:45 us=762936 OpenVPN 2.5.6 arm-tdx-linux-gnueabi [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [MH/PKTINFO] [AEAD] built on Mar 16 2022
2024-09-02 06:08:45 us=763429 library versions: OpenSSL 3.0.14 4 Jun 2024, LZO 2.10
Enter Private Key Password:
2024-09-02 06:08:47 us=937916 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
2024-09-02 06:08:48 us=393 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
2024-09-02 06:08:48 us=1370 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
2024-09-02 06:08:48 us=2954 Control Channel MTU parms [ L:1621 D:1184 EF:66 EB:0 ET:0 EL:3 ]
2024-09-02 06:08:48 us=4175 Data Channel MTU parms [ L:1621 D:1450 EF:121 EB:406 ET:0 EL:3 ]
2024-09-02 06:08:48 us=5506 Local Options String (VER=V4): 'V4,dev-type tun,link-mtu 1557,tun-mtu 1500,proto UDPv4,keydir 1,cipher AES-256-CBC,auth SHA1,keysize 256,tls-auth,key-method 2,tls-client'
2024-09-02 06:08:48 us=6751 Expected Remote Options String (VER=V4): 'V4,dev-type tun,link-mtu 1557,tun-mtu 1500,proto UDPv4,keydir 0,cipher AES-256-CBC,auth SHA1,keysize 256,tls-auth,key-method 2,tls-server'
2024-09-02 06:08:48 us=7976 TCP/UDP: Preserving recently used remote address: [AF_INET]103.105.233.156:1194
2024-09-02 06:08:48 us=9127 Socket Buffers: R=[180224->180224] S=[180224->180224]
2024-09-02 06:08:48 us=10255 UDP link local: (not bound)
2024-09-02 06:08:48 us=11274 UDP link remote: [AF_INET]103.105.233.156:1194
W2024-09-02 06:08:48 us=17256 read UDP [ECONNREFUSED]: Connection refused (code=111)
W2024-09-02 06:08:50 us=320944 read UDP [ECONNREFUSED]: Connection refused (code=111)
W2024-09-02 06:08:54 us=926278 read UDP [ECONNREFUSED]: Connection refused (code=111)
W2024-09-02 06:09:02 us=930873 read UDP [ECONNREFUSED]: Connection refused (code=111)

Here is the logs of journalctl -u openvpn@client.service

root@colibri-imx6ull-emmc-07324251:/etc/openvpn# journalctl -u openvpn@client.service
Sep 02 09:39:43 colibri-imx6ull-emmc-07324251 systemd[1]: /lib/systemd/system/openvpn@.service:8: PIDFile= references a path below legacy directory /var/run/, updating /var/run/openvpn/client.pid → /run>
Sep 02 09:39:43 colibri-imx6ull-emmc-07324251 systemd[1]: Starting OpenVPN Robust And Highly Flexible Tunneling Application On client...
Sep 02 09:39:43 colibri-imx6ull-emmc-07324251 systemd[1]: openvpn@client.service: Can't open PID file /run/openvpn/client.pid (yet?) after start: Operation not permitted
Sep 02 09:39:43 colibri-imx6ull-emmc-07324251 systemd[1]: Started OpenVPN Robust And Highly Flexible Tunneling Application On client.
Sep 02 09:39:43 colibri-imx6ull-emmc-07324251 systemd[1]: openvpn@client.service: Main process exited, code=exited, status=1/FAILURE
Sep 02 09:39:43 colibri-imx6ull-emmc-07324251 systemd[1]: openvpn@client.service: Failed with result 'exit-code'.
Sep 02 09:39:50 colibri-imx6ull-emmc-07324251 systemd[1]: /lib/systemd/system/openvpn@.service:8: PIDFile= references a path below legacy directory /var/run/, updating /var/run/openvpn/client.pid → /run>
Sep 02 09:40:54 colibri-imx6ull-emmc-07324251 systemd[1]: /lib/systemd/system/openvpn@.service:8: PIDFile= references a path below legacy directory /var/run/, updating /var/run/openvpn/client.pid → /run>
Sep 02 09:40:59 colibri-imx6ull-emmc-07324251 systemd[1]: Starting OpenVPN Robust And Highly Flexible Tunneling Application On client...
Sep 02 09:40:59 colibri-imx6ull-emmc-07324251 systemd[1]: openvpn@client.service: Can't open PID file /run/openvpn/client.pid (yet?) after start: Operation not permitted
Sep 02 09:40:59 colibri-imx6ull-emmc-07324251 systemd[1]: Started OpenVPN Robust And Highly Flexible Tunneling Application On client.
Sep 02 09:40:59 colibri-imx6ull-emmc-07324251 systemd[1]: openvpn@client.service: Main process exited, code=exited, status=1/FAILURE
Sep 02 09:40:59 colibri-imx6ull-emmc-07324251 systemd[1]: openvpn@client.service: Failed with result 'exit-code'.