Since Install of the Snap .sshguard

[MarcoMontana]

{ I am not a linux pro, or coder, just someone that finds all this stuff super interesting }

I am running a pihole raspberry pi updated and upgraded to newest kernel, I have also a dedicated pi for Wireguard clients pointed to the pilhole for DNS queries, for mobile devices.

I have a very high gvfsd-trash CPU usage after installation?

I have an error in the log output, I am uncertain if its something to worry about?

sudo snap logs sshguard-robertliu.sshguard
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: ERROR: ld.so: object '/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: Chain INPUT (policy ACCEPT)
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: target prot opt source destination
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: Chain FORWARD (policy ACCEPT)
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: target prot opt source destination
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: Chain OUTPUT (policy ACCEPT)
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: target prot opt source destination
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: Chain sshguard (0 references)
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: target prot opt source destination
2022-01-28T11:16:44-05:00 sshguard-robertliu.sshguard[3378]: ERROR: ld.so: object '/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.

EDIT: After rebooting the system twice the gvfsd-trash use is now gone? Still no idea however if the snap sshguard is actually running with the above errors ty.

[tsunghanliu]

Hi @MarcoMontana ,

I have no clue why gvfsd-trash consumed a high CPU usage after installation.

On my Raspberry Pi 4 with Ubuntu Core 20, the log is:

2022-02-11T17:03:54+08:00 systemd[1]: Started Service for snap application sshguard-robertliu.sshguard.
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236245]: Chain INPUT (policy ACCEPT)
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236245]: target     prot opt source               destination
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236245]: sshguard   all  --  0.0.0.0/0            0.0.0.0/0
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236245]: Chain FORWARD (policy ACCEPT)
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236245]: target     prot opt source               destination
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236245]: Chain OUTPUT (policy ACCEPT)
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236245]: target     prot opt source               destination
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236245]: Chain sshguard (1 references)
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236245]: target     prot opt source               destination
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236240]: sshguard[3236240]: whitelist: add IPv4 block: 127.0.0.0 with mask 8.
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236240]: sshguard[3236240]: whitelist: skipping IPv4 block: 127.0.0.0/8 -- already present.
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236240]: sshguard[3236240]: whitelist: add '::1' as plain IPv6.
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236240]: sshguard[3236240]: whitelist: add plain IPv6 ::1.
2022-02-11T17:03:54+08:00 sshguard-robertliu.sshguard[3236240]: sshguard[3236240]: Now monitoring attacks.
2022-02-11T17:03:54+08:00 sshguard[3236240]: whitelist: add IPv4 block: 127.0.0.0 with mask 8.
2022-02-11T17:03:54+08:00 sshguard[3236240]: whitelist: skipping IPv4 block: 127.0.0.0/8 -- already present.
2022-02-11T17:03:54+08:00 sshguard[3236240]: whitelist: add '::1' as plain IPv6.
2022-02-11T17:03:54+08:00 sshguard[3236240]: whitelist: add plain IPv6 ::1.
2022-02-11T17:03:54+08:00 sshguard[3236240]: Now monitoring attacks.

From the log you provided, it seems to me that ERROR: ld.so: ... is a warning message which shows the system cannot find libarmmem-${PLATFORM}.so and ld.so.preload was ignored.
But I'm not sure if sshguard added the input chain successfully.

Can you provide the outputs of snap version and snap debug sandbox-features. Let's see if snap is full supported on you system.