Update the systemd service unit files

This updates the existing webUI and DB4S end point unit files,
and also adds the missing unit files for the live daemon and api
services.

Author: justinclift

other/systemd/dbhub-api.service

@@ -0,0 +1,27 @@
+[Unit]
+Description=DBHub.io API daemon
+Documentation=https://github.com/sqlitebrowser/dbhub.io
+Requires=network-online.target
+Wants=network-online.target
+AssertFileIsExecutable=/usr/local/bin/api
+
+[Service]
+Environment="LD_LIBRARY_PATH=/home/dbhub/git_repos/dbhub.io/local/lib"
+ExecStart=/usr/local/bin/api
+WorkingDirectory=/home/dbhub/git_repos/dbhub.io
+User=dbhub
+Group=dbhub
+PermissionsStartOnly=true
+NonBlocking=true
+SuccessExitStatus=0
+StandardOutput=journal
+StandardError=inherit
+Restart=always
+AmbientCapabilities=CAP_NET_BIND_SERVICE
+NoNewPrivileges=true
+
+# Specifies the maximum file descriptor number that can be opened by this process
+LimitNOFILE=65536
+
+[Install]
+WantedBy=multi-user.target

other/systemd/dbhub-db4s.service

@@ -1,25 +1,24 @@
 [Unit]
 Description=DBHub.io DB4S connector
 Documentation=https://github.com/sqlitebrowser/dbhub.io
-Requires=postgresql-10.service
-Requires=memcached.service
+Requires=network-online.target
 Wants=network-online.target
-After=postgresql-10.service
 AssertFileIsExecutable=/usr/local/bin/db4s
 
 [Service]
+Environment="LD_LIBRARY_PATH=/home/dbhub/git_repos/dbhub.io/local/lib"
 ExecStart=/usr/local/bin/db4s
-WorkingDirectory=/home/dbhub/go/src/github.com/sqlitebrowser/dbhub.io
+WorkingDirectory=/home/dbhub/git_repos/dbhub.io
 User=dbhub
 Group=dbhub
 PermissionsStartOnly=true
 NonBlocking=true
 SuccessExitStatus=0
 StandardOutput=journal
 StandardError=inherit
-
-# Let systemd restart this service only if it has ended with the clean exit code or signal.
-Restart=on-success
+Restart=always
+AmbientCapabilities=CAP_NET_BIND_SERVICE
+NoNewPrivileges=true
 
 # Specifies the maximum file descriptor number that can be opened by this process
 LimitNOFILE=65536

other/systemd/dbhub-live.service

@@ -0,0 +1,27 @@
+[Unit]
+Description=DBHub.io Live database daemon
+Documentation=https://github.com/sqlitebrowser/dbhub.io
+Requires=network-online.target
+Wants=network-online.target
+AssertFileIsExecutable=/usr/local/bin/live
+
+[Service]
+Environment="LD_LIBRARY_PATH=/home/dbhub/git_repos/dbhub.io/local/lib"
+ExecStart=/usr/local/bin/live
+WorkingDirectory=/home/dbhub/git_repos/dbhub.io
+User=dbhub
+Group=dbhub
+PermissionsStartOnly=true
+NonBlocking=true
+SuccessExitStatus=0
+StandardOutput=journal
+StandardError=inherit
+Restart=always
+AmbientCapabilities=CAP_NET_BIND_SERVICE
+NoNewPrivileges=true
+
+# Specifies the maximum file descriptor number that can be opened by this process
+LimitNOFILE=65536
+
+[Install]
+WantedBy=multi-user.target

other/systemd/dbhub-webui.service

@@ -1,31 +1,25 @@
 [Unit]
 Description=DBHub.io Website User Interface
 Documentation=https://github.com/sqlitebrowser/dbhub.io
-Requires=postgresql-10.service
-Requires=memcached.service
-Requires=minio.service
+Requires=network-online.target
 Wants=network-online.target
-After=postgresql-10.service
-After=memcached.service
-After=minio.service
 AssertFileIsExecutable=/usr/local/bin/webui
 
 [Service]
+Environment="LD_LIBRARY_PATH=/home/dbhub/git_repos/dbhub.io/local/lib"
 ExecStart=/usr/local/bin/webui
-WorkingDirectory=/home/dbhub/go/src/github.com/sqlitebrowser/dbhub.io
+WorkingDirectory=/home/dbhub/git_repos/dbhub.io
 User=dbhub
 Group=dbhub
 PermissionsStartOnly=true
 NonBlocking=true
+SuccessExitStatus=0
 StandardOutput=journal
 StandardError=inherit
-SuccessExitStatus=0
+Restart=always
 AmbientCapabilities=CAP_NET_BIND_SERVICE
 NoNewPrivileges=true
 
-# Let systemd restart this service only if it has ended with the clean exit code or signal.
-Restart=on-success
-
 # Specifies the maximum file descriptor number that can be opened by this process
 LimitNOFILE=65536