Container starts, lives for hours, dies

[billd100]

Hi all, looking for suggestions to troubleshoot the below issue.

The container starts up as expected, runs as expected for awhile, and then later dies with the following logs:

Sun Nov  6 22:06:37 2022 event_wait : Interrupted system call (code=4)
Sun Nov  6 22:06:37 2022 /etc/openvpn/tunnelDown.sh tun0 1500 1554 10.5.0.8 255.255.0.0 init
Sun Nov  6 22:06:37 2022 WARNING: Failed running command (--up/--down): could not execute external program
Sun Nov  6 22:06:37 2022 Exiting due to fatal error

For additional background, logs from before the error are below. One thing that's interesting to note is that roughly every hour, the container performs a verification with Mullvad but there is a significant lapse before the interrupted system call comes through.

Sun Nov  6 15:41:03 2022 VERIFY OK: depth=2, C=SE, ST=Gotaland, L=Gothenburg, O=Amagicom AB, OU=Mullvad, CN=Mullvad Root CA v2, [email protected]
Sun Nov  6 15:41:03 2022 VERIFY OK: depth=1, C=SE, ST=Gotaland, O=Amagicom AB, OU=Mullvad, CN=Mullvad Intermediate CA v4, [email protected]
Sun Nov  6 15:41:03 2022 VERIFY KU OK
Sun Nov  6 15:41:03 2022 Validating certificate extended key usage
Sun Nov  6 15:41:03 2022 ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
Sun Nov  6 15:41:03 2022 VERIFY EKU OK
Sun Nov  6 15:41:03 2022 VERIFY OK: depth=0, C=SE, ST=Gotaland, O=Amagicom AB, OU=Mullvad, CN=us-chi-005.mullvad.net, [email protected]
Sun Nov  6 15:41:03 2022 WARNING: 'link-mtu' is used inconsistently, local='link-mtu 1559', remote='link-mtu 1560'
Sun Nov  6 15:41:03 2022 WARNING: 'comp-lzo' is present in remote config but missing in local config, remote='comp-lzo'
Sun Nov  6 15:41:03 2022 Outgoing Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
Sun Nov  6 15:41:03 2022 Incoming Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
Sun Nov  6 15:41:03 2022 Control Channel: TLSv1.3, cipher TLSv1.3 TLS_CHACHA20_POLY1305_SHA256, 4096 bit RSA
Sun Nov  6 16:37:15 2022 VERIFY OK: depth=2, C=SE, ST=Gotaland, L=Gothenburg, O=Amagicom AB, OU=Mullvad, CN=Mullvad Root CA v2, [email protected]
Sun Nov  6 16:37:15 2022 VERIFY OK: depth=1, C=SE, ST=Gotaland, O=Amagicom AB, OU=Mullvad, CN=Mullvad Intermediate CA v4, [email protected]
Sun Nov  6 16:37:15 2022 VERIFY KU OK
Sun Nov  6 16:37:15 2022 Validating certificate extended key usage
Sun Nov  6 16:37:15 2022 ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
Sun Nov  6 16:37:15 2022 VERIFY EKU OK
Sun Nov  6 16:37:15 2022 VERIFY OK: depth=0, C=SE, ST=Gotaland, O=Amagicom AB, OU=Mullvad, CN=us-chi-005.mullvad.net, [email protected]
Sun Nov  6 16:37:15 2022 WARNING: 'link-mtu' is used inconsistently, local='link-mtu 1559', remote='link-mtu 1560'
Sun Nov  6 16:37:15 2022 WARNING: 'comp-lzo' is present in remote config but missing in local config, remote='comp-lzo'
Sun Nov  6 16:37:15 2022 Outgoing Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
Sun Nov  6 16:37:15 2022 Incoming Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
Sun Nov  6 16:37:15 2022 Control Channel: TLSv1.3, cipher TLSv1.3 TLS_CHACHA20_POLY1305_SHA256, 4096 bit RSA
Sun Nov  6 22:06:37 2022 event_wait : Interrupted system call (code=4)
Sun Nov  6 22:06:37 2022 /etc/openvpn/tunnelDown.sh tun0 1500 1554 10.5.0.8 255.255.0.0 init
Sun Nov  6 22:06:37 2022 WARNING: Failed running command (--up/--down): could not execute external program
Sun Nov  6 22:06:37 2022 Exiting due to fatal error