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I just run bitcoind in centOS server. I run the following command
nohup ./bitcoind > out & disown
Then I exit the SSH terminal, and the process is automatically closed. Is there any way to make this process run as a background process, after closing ssh?
Os: CentOS-7
CentOS version 7 or newer I suppose?
This looks like an effect of systemd session management: when the user's session ends, any processes belonging to that session are automatically terminated.
If that's the cause, the solution requires two steps. First, your user account needs a permission to let processes linger on after the user's session ends:
loginctl enable-linger <username>
Granting that permission may or may not require admin rights, depending on choices made by the system administrator and/or default settings of a particular Linux distribution.
Then you'll need to use systemd-run instead of the old nohup to start your long-term background process.
systemd. Also, if you are not the server administrator, the admin may have taken steps to stop regular users leaving lingering processes around; if that's the case, you'll need to talk to that administrator.
systemd-run instead of nohup after enabling lingering, then I'm out of ideas, sorry.