"show log vpn all" or "show log vpn ipsec" does not show any results . The backend script pulls the logs from messages file where no logs are written
The logs can be seen with journalctl command.
$ sudo journalctl -b | grep charon
vyos@vyos:~$ sudo journalctl -b | grep charon Nov 05 08:33:04 vyos charon[1878]: 00[DMN] Starting IKE charon daemon (strongSwan 5.7.2, Linux 5.4.255-amd64-vyos, x86_64) Nov 05 08:33:04 vyos charon[1878]: 00[CFG] PKCS11 module '<name>' lacks library path Nov 05 08:33:05 vyos charon[1878]: 00[CFG] loading ca certificates from '/etc/ipsec.d/cacerts' Nov 05 08:33:05 vyos charon[1878]: 00[CFG] loading aa certificates from '/etc/ipsec.d/aacerts' Nov 05 08:33:05 vyos charon[1878]: 00[CFG] loading ocsp signer certificates from '/etc/ipsec.d/ocspcerts' Nov 05 08:33:05 vyos charon[1878]: 00[CFG] loading attribute certificates from '/etc/ipsec.d/acerts' Nov 05 08:33:05 vyos charon[1878]: 00[CFG] loading crls from '/etc/ipsec.d/crls' Nov 05 08:33:05 vyos charon[1878]: 00[CFG] loading secrets from '/etc/ipsec.secrets' Nov 05 08:33:05 vyos charon[1878]: 00[CFG] loaded IKE secret for 10.217.80.94 10.217.80.110
vyos@vyos:~$ sh ver Version: VyOS 1.3.4 Release train: equuleus Built by: Sentrium S.L. Built on: Fri 13 Oct 2023 12:10 UTC Build UUID: 0b20543f-d1b6-49e5-b36b-95a069c63788 Build commit ID: 986c77ac08c552 Architecture: x86_64 Boot via: installed image System type: KVM guest Hardware vendor: QEMU Hardware model: Standard PC (i440FX + PIIX, 1996) Hardware S/N: Hardware UUID: eb8135f4-4c76-4203-be4e-c2dd51112195 Copyright: VyOS maintainers and contributors