├── README.md
├── monitor
    └── CheckServer
    │   └── CheckServer.java
└── script
    └── minecraft


/README.md:
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1 | Disclaimer: These files will not automatically work with your server. They are simply posted for those curious how the script works. These work for our specific and highly customized server, and if you want to use them you will need to adapt these scripts to work for your environment.
2 | 
3 | We provide no warranty or support with these files. If you muck up yours or your friend's server we are not responsible.
4 | 
5 | User discretion is advised.
6 | 


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/monitor/CheckServer/CheckServer.java:
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 1 | import java.io.*;
 2 | import java.net.*;
 3 | 
 4 | public class CheckServer {
 5 | 	public static void main(String[] args) {
 6 | 	 if (args.length < 2)
 7 | 	 {
 8 | 	   System.out.println("Usage: CheckServer <host> <port>");
 9 | 	   System.exit(1);
10 | 	 }
11 | 		String host = args[0];
12 | 		int port = Integer.parseInt(args[1]);
13 | 		
14 | 		int failCount = 0;
15 | 	
16 | 		for (;;) {
17 | 			Socket socket = null;
18 | 			DataInputStream datainputstream = null;
19 | 			DataOutputStream dataoutputstream = null;
20 | 
21 | 			try {
22 | 				socket = new Socket();
23 | 		
24 | 				socket.setSoTimeout(3000);
25 | 				socket.setTcpNoDelay(true);
26 | 				socket.setTrafficClass(18);
27 | 		
28 | 				socket.connect(new InetSocketAddress(host, port), 3000);
29 | 		
30 | 				datainputstream = new DataInputStream(socket.getInputStream());
31 | 				dataoutputstream = new DataOutputStream(socket.getOutputStream());
32 | 		
33 | 				dataoutputstream.write(254);
34 | 		
35 | 				if (datainputstream.read() != 255) throw new IOException("Bad message");
36 | 				
37 | 				short strLength = datainputstream.readShort();
38 | 				if (strLength < 0 || strLength > 64) throw new IOException("invalid string length");
39 | 				
40 | 				StringBuilder stringBuilder = new StringBuilder();
41 | 				for(int i=0; i<strLength; i++) stringBuilder.append(datainputstream.readChar());
42 | 
43 | 				String data = stringBuilder.toString();
44 | 				String dataParts[] = data.split("\u00a7");
45 | 		
46 | 				String motd = dataParts[0];
47 | 		
48 | 				int playerCount = -1;
49 | 				int maxPlayerCount = -1;
50 | 		
51 | 				try {
52 | 					playerCount = Integer.parseInt(dataParts[1]);
53 | 					maxPlayerCount = Integer.parseInt(dataParts[2]);
54 | 				} catch(Exception e) { }
55 | 
56 | 				//System.out.println("Motd: "+motd);
57 | 				//System.out.println("Players: "+playerCount+"/"+maxPlayerCount);
58 | 				
59 | 				failCount = 0;
60 | 			} catch (Exception e) {
61 | 				//e.printStackTrace();
62 | 				
63 | 				failCount++;
64 | 				
65 | 				if (failCount >= 10) {
66 | 					try {
67 | 						//System.out.println("Restart");
68 | 						String command[] = { "/bin/bash", "service", "minecraft", "restart" };
69 | 						
70 | 						Process	restartProcess = Runtime.getRuntime().exec(command);
71 | 						restartProcess.waitFor();
72 | 					
73 | 						Thread.sleep(60000);
74 | 					} catch (Exception e2) {
75 | 						return;
76 | 					}
77 | 				}
78 | 			} finally {
79 | 				try {
80 | 					if(datainputstream != null) datainputstream.close();
81 | 				} catch(Throwable throwable) { }
82 | 				try {
83 | 					if(dataoutputstream != null) dataoutputstream.close();
84 | 				} catch(Throwable throwable1) { }
85 | 				try {
86 | 					if(socket != null) socket.close();
87 | 				} catch(Throwable throwable2) { }
88 | 			}
89 | 			
90 | 			try {
91 | 				Thread.sleep(30000);
92 | 			} catch (Exception e) { }
93 | 		}
94 | 	}
95 | }
96 | 
97 | 


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/script/minecraft:
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  1 | #!/bin/bash
  2 | # /etc/init.d/minecraft
  3 | # version 0.3.2 2011-01-27 (YYYY-MM-DD)
  4 | 
  5 | ### BEGIN INIT INFO
  6 | # Provides:   minecraft
  7 | # Required-Start: $local_fs $remote_fs
  8 | # Required-Stop:  $local_fs $remote_fs
  9 | # Should-Start:   $network
 10 | # Should-Stop:    $network
 11 | # Default-Start:  2 3 4 5
 12 | # Default-Stop:   0 1 6
 13 | # Short-Description:    Minecraft server
 14 | # Description:    Starts the minecraft server
 15 | ### END INIT INFO
 16 | 
 17 | # Settings start
 18 | USERNAME="<username>"
 19 | JMXPORT=<jmx port>
 20 | 
 21 | SERVICE='forge_latest.zip'
 22 | MCPATH="/home/$USERNAME/minecraft"
 23 | BACKUPPATH="/home/$USERNAME/backup"
 24 | CHECKSERVER="/home/$USERNAME/CheckServer"
 25 | JMXPWFILE="<path to jmx password file>"
 26 | CRASHLOG_DB_PATH='<path to dump crash logs>'
 27 | JAVA_HOME="/usr/local/lib/jrockit"
 28 | 
 29 | MEMORY_OPTS="-Xmx8G -Xms8G"
 30 | JAVA_OPTIONS="-XX:FlightRecorderOptions=defaultrecording=true,disk=true,repository=/home/$USERNAME/jfr/,maxage=30m,settings=profile"
 31 | JMX_OPTIONS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.port=$JMXPORT -Dcom.sun.management.jmxremote.password.file=$JMXPWFILE"
 32 | 
 33 | INVOCATION="${JAVA_HOME}/bin/java ${MEMORY_OPTS} ${JAVA_OPTIONS} ${JMX_OPTIONS} -jar $SERVICE nogui"
 34 | BACKUPARCHIVEPATH=$BACKUPPATH/archive
 35 | BACKUPDIR=$(date +%b_%Y)
 36 | PORT=$(grep server-port $MCPATH/server.properties | cut -d '=' -f 2)
 37 | 
 38 | if [ -z "$PORT" ]; then
 39 | 	PORT=25565
 40 | fi
 41 | 
 42 | # Settings end
 43 | 
 44 | if [ $(whoami) != $USERNAME ]; then
 45 | 	su $USERNAME -l -c "$(readlink -f $0) $*"
 46 | 	exit $?
 47 | fi
 48 | 
 49 | is_running() {
 50 | 	if [ ! -e $MCPATH/java.pid ]; then
 51 | 		return 1
 52 | 	fi
 53 | 	
 54 | 	pid=$(cat $MCPATH/java.pid)
 55 | 	if [ -z $pid ]; then
 56 | 		return 1
 57 | 	fi
 58 | 	
 59 | 	ps -eo "%p" | grep "^\\s*$pid\\s*\$" > /dev/null
 60 | 	return $?
 61 | }
 62 | 
 63 | mc_start() {
 64 | 	if is_running; then
 65 | 		echo "Tried to start but $SERVICE was already running!"
 66 | 	else
 67 | 		echo "$SERVICE was not running... starting."
 68 | 		
 69 | 		cd $MCPATH
 70 | 		screen -dmS mc$PORT $INVOCATION &
 71 | 		
 72 | 		for (( i=0; i < 10; i++ )); do
 73 | 			screenpid=$(ps -eo '%p %a' | grep -v grep | grep -i screen | grep mc$PORT | awk '{print $1}')
 74 | 			javapid=$(ps -eo '%P %p' | grep "^\\s*$screenpid " | awk '{print $2}')
 75 | 			
 76 | 			if [[ -n "$screenpid" && -n "$javapid" ]]; then
 77 | 				break
 78 | 			fi
 79 | 			
 80 | 			sleep 1
 81 | 		done
 82 | 		
 83 | 		if [[ -n "$screenpid" && -n "$javapid" ]]; then
 84 | 			echo "$SERVICE is now running."
 85 | 			echo "$javapid" > $MCPATH/java.pid
 86 | 			echo "$screenpid.mc$PORT" > $MCPATH/screen.name
 87 | 		else
 88 | 			echo "Could not start $SERVICE."
 89 | 		fi
 90 | 	fi
 91 | }
 92 | 
 93 | mc_startmonitor() {
 94 | 	if [ -z $CHECKSERVER ]; then
 95 | 		echo "started monitor"
 96 | 		/usr/bin/daemon --name=minecraft_checkserver -- $JAVA_HOME/bin/java -cp $CHECKSERVER CheckServer localhost $PORT
 97 | 	fi
 98 | }
 99 | 
100 | mc_saveoff() {
101 | 	if is_running; then
102 | 		echo "$SERVICE is running... suspending saves"
103 | 		mc_exec "say SERVER BACKUP STARTING. Server going readonly..."
104 | 		mc_exec "save-off"
105 | 		mc_exec "save-all"
106 | 		sync
107 | 		sleep 10
108 | 	else
109 | 		echo "$SERVICE was not running. Not suspending saves."
110 | 	fi
111 | }
112 | 
113 | mc_saveon() {
114 | 	if is_running; then
115 | 		echo "$SERVICE is running... re-enabling saves"
116 | 		mc_exec "save-on"
117 | 		mc_exec "say SERVER BACKUP ENDED. Server going read-write..."
118 | 	else
119 | 		echo "$SERVICE was not running. Not resuming saves."
120 | 	fi
121 | }
122 | 
123 | mc_kill() {
124 | 	pid=$(cat $MCPATH/java.pid)
125 | 
126 | 	echo "terminating process with pid $pid"
127 | 	kill $pid
128 | 	
129 | 	for (( i=0; i < 10; i++ )); do
130 | 		is_running || break
131 | 		sleep 1
132 | 	done
133 | 
134 | 	if is_running; then
135 | 		echo "$SERVICE could not be terminated, killing..."
136 | 		kill -SIGKILL $pid
137 | 		echo "$SERVICE killed"
138 | 	else
139 | 		echo "$SERVICE terminated"
140 | 	fi
141 | }
142 | 
143 | mc_stop() {
144 | 	if is_running; then
145 | 		echo "$SERVICE is running... stopping."
146 | 
147 | 		mc_exec "say SERVER SHUTTING DOWN IN 10 SECONDS. Saving map..."
148 | 		mc_exec "save-all"
149 | 		sleep 10
150 | 		mc_exec "stop"
151 | 		
152 | 		for (( i=0; i < 20; i++ )); do
153 | 			is_running || break
154 | 			sleep 1
155 | 		done
156 | 	else
157 | 		echo "$SERVICE was not running."
158 | 	fi
159 | 	
160 | 	if is_running; then
161 | 		echo "$SERVICE could not be shut down cleanly... still running."
162 | 		mc_kill
163 | 	else
164 | 		echo "$SERVICE is shut down."
165 | 	fi
166 | 	
167 | 	rm $MCPATH/java.pid
168 | 	rm $MCPATH/screen.name
169 | }
170 | 
171 | mc_stopmonitor() {
172 | 	if [ -z $CHECKSERVER ]; then
173 | 		/usr/bin/daemon --name=minecraft_checkserver --stop
174 | 	fi
175 | }
176 | 
177 | mc_backup() {
178 | 	echo "Backing up minecraft world"
179 | 
180 | 	[ -d "$BACKUPPATH/$BACKUPDIR" ] || mkdir -p "$BACKUPPATH/$BACKUPDIR"
181 | 
182 | 	rdiff-backup $MCPATH "$BACKUPPATH/$BACKUPDIR"
183 | 	
184 | 	echo "Backup complete"
185 | }
186 | 
187 | mc_thinoutbackup() {
188 | 	if (($(date +%H) == 0)) && (($(date +%M) < 15)); then
189 | 		archivedate=$(date --date="7 days ago")
190 | 		
191 | 		echo "Thinning backups created $archivedate out"
192 | 		
193 | 		archivedateunix=$(date --date="$archivedate" +%s)
194 | 		archivesourcedir=$BACKUPPATH/$(date --date="$archivedate" +%b_%Y)
195 | 		archivesource=$archivesourcedir/rdiff-backup-data/increments.$(date --date="$archivedate" +%Y-%m-%dT%H):0*.dir
196 | 		archivesource=$(echo $archivesource)
197 | 		archivedest=$BACKUPARCHIVEPATH/$(date --date="$archivedate" +%b_%Y)
198 | 		
199 | 		if [[ ! -f $archivesource ]]; then
200 | 			echo "Nothing to be done"
201 | 		else
202 | 			tempdir=$(mktemp -d)
203 | 			
204 | 			if [[ ! $tempdir =~ ^/tmp ]]; then
205 | 				echo "invalid tmp dir $tempdir"
206 | 			else
207 | 				rdiff-backup $archivesource $tempdir
208 | 				rdiff-backup --current-time $archivedateunix $tempdir $archivedest
209 | 				rm -R "$tempdir"
210 | 				
211 | 				rdiff-backup --remove-older-than 7D --force $archivesourcedir
212 | 				
213 | 				echo "done"
214 | 			fi
215 | 		fi
216 | 	fi
217 | }
218 | 
219 | mc_exec() {
220 | 	if is_running; then
221 | 		screen -p 0 -S $(cat $MCPATH/screen.name) -X stuff "$@$(printf \\r)"
222 | 	else
223 | 		echo "$SERVICE was not running. Not executing command."
224 | 	fi
225 | }
226 | 
227 | mc_dumpcrashlogs() {
228 | 	if is_running; then
229 | 		cp $MCPATH/crash-reports/* $CRASHLOG_DB_PATH
230 | 		mv $MCPATH/crash-reports/* $MCPATH/crash-reports.archive/
231 | 	fi
232 | }
233 | 
234 | #Start-Stop here
235 | case "$1" in
236 |   start)
237 |     if mc_start
238 |     then
239 |       mc_startmonitor
240 |     fi
241 |     ;;
242 |   stop)
243 |     mc_stopmonitor
244 |     mc_stop
245 |     ;;
246 |   restart)
247 |     mc_stop
248 |     mc_start
249 |     ;;
250 |   backup)
251 |     mc_saveoff
252 |     mc_backup
253 |     mc_saveon
254 |     mc_thinoutbackup
255 |     ;;
256 |   exec)
257 |     shift
258 |     mc_exec "$@"
259 |     ;;
260 |   dumpcrashlogs)
261 |     mc_dumpcrashlogs
262 |     ;;
263 |   status)
264 |     if is_running
265 |     then
266 |       echo "$SERVICE is running."
267 |     else
268 |       echo "$SERVICE is not running."
269 |     fi
270 |     ;;
271 | 
272 |   *)
273 |   echo "Usage: $(readlink -f $0) {start|stop|restart|backup|exec|dumpcrashlogs|status}"
274 |   exit 1
275 |   ;;
276 | esac
277 | 
278 | exit 0
279 | 


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