HentaiAtHome Service MigrationNov 5th 2018Words: 1.1k
This post is created 3 years ago, the content may be outdated.
For some reasons, I need to migrate my [email protected] service to a VPS on another hosting provider. After the procedure, I wrote this article for reference in the future.
Cleanup the Old One
Before begin, check whether the original host has sufficient outbound traffic quota.
First, exit [email protected] on the original host peacefully so that the Trust will not be harmed.
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sudo systemctl stop hentaiathome
Move Data to the New Place
Now it’s time to work on configurations on the new VPS.
To connect the original host, the ssh key is needed.
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sudo vim original-host.key # Paste the private key, then save & exit.
Use SCP to pull all the data from the original host.
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# Of course you should use screen for this job screen -R scp -r -i origianl-host.key [email protected]:/path/to/old/hath /path/to/new/hath # Don't forget to remove the temporary key rm original-host.key
Usually it’s better to package the data before migration, but my original host is already run out of disk space.
There’s tons of data to transfer, so now it’s BREAK TIME! 😀
Setup the New Server
Verify the migrated cache file first. The HentaiAtHome may prompt for client ID and client key on first run. Make sure the account that runs the program has the access to cache files.
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cd /path/to/hath/ java -jar /newHentaiAtHome --verify-cache
After verification, add new user for [email protected], and also change the ownership of your new data:
# PATH should only include /usr/* if it runs after the mountnfs.sh script PATH=/sbin:/usr/sbin:/bin:/usr/bin DESC="[email protected] service" NAME=hentaiathome DAEMON=/usr/bin/java USER=hath DIR=/home/hath/ DAEMON_ARGS="-jar /path/to/bin/HentaiAtHome.jar" PIDFILE=/var/run/$NAME.pid SCRIPTNAME=/etc/init.d/$NAME
# Exit if the package is not installed [ -x "$DAEMON" ] || exit 0
# Read configuration variable file if it is present [ -r /etc/default/$NAME ] && . /etc/default/$NAME
# Load the VERBOSE setting and other rcS variables . /lib/init/vars.sh
# Define LSB log_* functions. # Depend on lsb-base (>= 3.2-14) to ensure that this file is present # and status_of_proc is working. . /lib/lsb/init-functions
# # Function that starts the daemon/service # do_start() { # Return # 0 if daemon has been started # 1 if daemon was already running # 2 if daemon could not be started start-stop-daemon --background --make-pidfile \ --start --quiet --pidfile $PIDFILE --exec$DAEMON --test > /dev/null \ || return 1 start-stop-daemon --chuid $USER --chdir$DIR --background --make-pidfile \ --start --quiet --pidfile $PIDFILE --exec$DAEMON -- $DAEMON_ARGS \ || return 2 # Add code here, if necessary, that waits for the process to be ready # to handle requests from services started subsequently which depend # on this one. As a last resort, sleep for some time. }
# # Function that stops the daemon/service # do_stop() { # Return # 0 if daemon has been stopped # 1 if daemon was already stopped # 2 if daemon could not be stopped # other if a failure occurred start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME RETVAL="$?" [ "$RETVAL" = 2 ] && return 2 # Wait for children to finish too if this is a daemon that forks # and if the daemon is only ever run from this initscript. # If the above conditions are not satisfied then add some other code # that waits for the process to drop all resources that could be # needed by services started subsequently. A last resort is to # sleep for some time. start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec$DAEMON [ "$?" = 2 ] && return 2 # Many daemons don't delete their pidfiles when they exit. rm -f $PIDFILE return"$RETVAL" }
# # Function that sends a SIGHUP to the daemon/service # do_reload() { # # If the daemon can reload its configuration without # restarting (for example, when it is sent a SIGHUP), # then implement that here. # start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME return 0 }
case"$1"in start) [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC""$NAME" do_start case"$?"in 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; esac ;; stop) [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC""$NAME" do_stop case"$?"in 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; esac ;; status) status_of_proc "$DAEMON""$NAME" && exit 0 || exit $? ;; #reload|force-reload) # # If do_reload() is not implemented then leave this commented out # and leave 'force-reload' as an alias for 'restart'. # #log_daemon_msg "Reloading $DESC" "$NAME" #do_reload #log_end_msg $? #;; restart|force-reload) # # If the "reload" option is implemented then remove the # 'force-reload' alias # log_daemon_msg "Restarting $DESC""$NAME" do_stop case"$?"in 0|1) do_start case"$?"in 0) log_end_msg 0 ;; 1) log_end_msg 1 ;; # Old process is still running *) log_end_msg 1 ;; # Failed to start esac ;; *) # Failed to stop log_end_msg 1 ;; esac ;; *) #echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2 echo"Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2 exit 3 ;; esac