I have a PC with opensuse leap 15.5 + KDE + bitcoin core 26.0 (/usr/local/bin/bitcoind -rwxr-xr-x 1 root root) the /home/bitcoin/.bitcoin (lrwxrwxrwx 1 bitcoin bitcoin) directory is a symlink to an external disk (/run/media/ibm/BB/BTCbc/ (drwxrwx--- 6 bitcoin bitcoin).

I login with the user ibm which is part of the bitcoin group and I run bitcoind and bitcoin-qt without problems.

I want to run the node as a service from the boot of the PC.

This is the unit/service file's (/etc/systemd/system/bitcoind.service -rwxr--r-- 1 root root) content:

[Unit]
Description=Bitcoin daemon
Documentation=https://github.com/bitcoin/bitcoin/blob/master/doc/init.md

# https[Suspicious link removed]cStart=/usr/local/bin/bitcoind -daemon
-pid=/home/bitcoin/.bitcoin/bitcoind.pid \
-conf=/home/bitcoin/.bitcoin/bitcoin.conf \
-datadir=/home/bitcoin/.bitcoin \
-startupnotify='systemd-notify --ready' \
-shutdownnotify='systemd-notify --stopping'
ExecStop=/usr/local/bin/bitcoin-cli -datadir=/home/bitcoin/.bitcoin stop

# Make sure the config directory is readable by the service user
PermissionsStartOnly=true
ExecStartPre=/bin/chgrp bitcoin /home/bitcoin/.bitcoin

# Process management
####################

Type=notify
NotifyAccess=all
PIDFile=/home/bitcoin/.bitcoin/bitcoind.pid
#PIDFile=/run/bitcoind/bitcoind.pid

Restart=on-failure
TimeoutStartSec=infinity
TimeoutStopSec=600

# Directory creation and permissions
####################################

# Run as bitcoin:bitcoin
User=bitcoin
Group=bitcoin

# /run/bitcoind
RuntimeDirectory=bitcoind
RuntimeDirectoryMode=0710

# /etc/bitcoin
ConfigurationDirectory=bitcoin
ConfigurationDirectoryMode=0710

# /var/lib/bitcoind
StateDirectory=bitcoind
StateDirectoryMode=0710

# Hardening measures
####################

# Provide a private /tmp and /var/tmp.
PrivateTmp=true

# Mount /usr, /boot/ and /etc read-only for the process.
ProtectSystem=full

# Deny access to /home, /root and /run/user
ProtectHome=true

# Disallow the process and all of its children to gain
# new privileges through execve().
NoNewPrivileges=true

# Use a new /dev namespace only populated with API pseudo devices
# such as /dev/null, /dev/zero and /dev/random.
PrivateDevices=true

# Deny the creation of writable and executable memory mappings.
MemoryDenyWriteExecute=true

# Restrict ABIs to help ensure MemoryDenyWriteExecute is enforced
SystemCallArchitectures=native

[Install]
WantedBy=multi-user.target

############################ END

the /home/bitcoin/.bitcoin/bitcoin.conf file use the default configuration, does not point to any datadir other than the default one.

so I try to run the bitcoind service with sudo systemctl start bitcoind.service to check if it runs well before enabling it I get the following error:

Job for bitcoind.service failed because the control process exited with error code.

2024-04-27T00:57:46.787821-04:00 localhost sudo: ibm : TTY=pts/2 ; PWD=/var/log ; USER=root ; COMMAND=/usr/bin/systemctl start bitcoind
2024-04-27T00:57:46.791118-04:00 localhost sudo: pam_unix(sudo:session): session opened for user root by ibm(uid=1000)
2024-04-27T00:57:46.806448-04:00 localhost systemd[1]: Starting Bitcoin daemon...
2024-04-27T00:57:47.018335-04:00 localhost bitcoind[7192]: Error: filesystem error: status: Permission denied [/home/bitcoin/.bitcoin]
2024-04-27T00:57:47.019455-04:00 localhost systemd[1]: bitcoind.service: Main process exited, code=exited, status=1/FAILURE
2024-04-27T00:57:47.019561-04:00 localhost systemd[1]: bitcoind.service: Failed with result 'exit-code'.
2024-04-27T00:57:47.020037-04:00 localhost systemd[1]: Failed to start Bitcoin daemon.
2024-04-27T00:57:47.023654-04:00 localhost sudo: pam_unix(sudo:session): session closed for user root

I don't understand this, since all permissions and ownership are granted, what is systemd denying access to /home/bitcoin/.bitcoin during the execution of bitcoind.service?

sherlockphone

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