refuse to connect again

I think there should have some problem in virtualmin, and it is happen again.

webmin is new installed, my pc will not shutdown and it keep running.

after installed, I have add 2 virtual server, it is normal usage

then I go to sleep ( around 6- 8 hours),

when I get up, refresh the https://[mydomain]:10000 in chrome,

the connection is refuse.

============================================================================================= I have tried to run the following command that you provide before : free -m dmesg | tail -30

result is : # free -m
              total        used        free      shared  buff/cache   available
Mem:           1838         563        1130          18         144        1120
Swap:             0           0           0
# dmesg | tail -30
[    1.669617] systemd-journald[371]: Received request to flush runtime journal from PID 1
[    1.807014] piix4_smbus 0000:00:07.3: SMBus Host Controller not enabled!
[    1.809364] vmw_vmci 0000:00:07.7: Found VMCI PCI device at 0x11080, irq 16
[    1.809413] vmw_vmci 0000:00:07.7: Using capabilities 0xc
[    1.809549] vmw_vmci 0000:00:07.7: irq 60 for MSI/MSI-X
[    1.809569] vmw_vmci 0000:00:07.7: irq 61 for MSI/MSI-X
[    1.809782] Guest personality initialized and is active
[    1.809831] VMCI host device registered (name=vmci, major=10, minor=58)
[    1.809832] Initialized host personality
[    1.830978] input: PC Speaker as /devices/platform/pcspkr/input/input4
[    1.832877] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    1.834220] sr 2:0:0:0: Attached scsi generic sg1 type 5
[    1.837084] cryptd: max_cpu_qlen set to 1000
[    1.853861] SSE version of gcm_enc/dec engaged.
[    1.868032] ppdev: user-space parallel port driver
[    1.873054] alg: No test for __gcm-aes-aesni (__driver-gcm-aes-aesni)
[    1.873462] alg: No test for __generic-gcm-aes-aesni (__driver-generic-gcm-aes-aesni)
[    1.957681] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[    1.999392] type=1305 audit(1599549212.931:3): audit_pid=501 old=0 auid=4294967295 ses=4294967295 res=1
[    2.267669] NET: Registered protocol family 40
[    2.614937] ip6_tables: (C) 2000-2006 Netfilter Core Team
[    2.654453] Ebtables v2.0 registered
[    2.667898] Netfilter messages via NETLINK v0.30.
[    2.674252] ip_set: protocol 7
[    2.692017] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    2.692941] vmxnet3 0000:0b:00.0 eth0: intr type 3, mode 0, 3 vectors allocated
[    2.695168] vmxnet3 0000:0b:00.0 eth0: NIC Link is Up 10000 Mbps
[    2.816907] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[    2.905268] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[   22.936089] random: crng init done
Status: 
Active
Files: 

Comments

Are there any messages in /var/log/messages about Virtualmin's miniserv.pl process being killed due to lack of RAM?