Annotation of loncom/init.d/loncontrol, revision 1.32
1.1 harris41 1: #!/usr/bin/perl
1.2 harris41 2: #
1.32 ! albertel 3: # $Id: loncontrol,v 1.31 2007/06/02 03:40:02 albertel Exp $
1.23 matthew 4: #
1.6 harris41 5: # The LearningOnline Network with CAPA
6: #
1.21 matthew 7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
1.2 harris41 29: # Startup script for the LON-CAPA network processes
1.6 harris41 30: #
1.7 harris41 31:
1.3 harris41 32: # chkconfig: 345 95 5
1.21 matthew 33: # description: LON-CAPA is a "network of knowledge". It is used to \
1.6 harris41 34: # distribute knowledge resources and instructional management.
1.28 raeburn 35: # processnames: lonc, lond, lonsql, lonmaxima
1.2 harris41 36: # pidfiles: /home/httpd/perl/logs/lon*.pid
1.7 harris41 37: # config: /etc/httpd/conf/loncapa.conf
1.2 harris41 38: # config: /home/httpd/lonTabs/hosts.tab
39: # config: /home/httpd/lonTabs/spare.tab
1.31 albertel 40: # SuSE chkconfig/insserv info
41: ### BEGIN INIT INFO
42: # Provides: loncapa
43: # Required-Start: mysql apache2 $network $remote_fs
44: # Required-Stop:
45: # Default-Start: 3 4 5
46: # Default-Stop:
47: # Description: Starts the LON-CAPA services
48: ### END INIT INFO
49:
1.2 harris41 50:
1.1 harris41 51: $command=$ARGV[0]; $command=~s/[^a-z]//g;
52:
53: $ENV{'PATH'}="/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin";
54: $ENV{'BASH_ENV'}="";
55:
1.20 matthew 56: { # Firewall variable scoping
57: # Firewall code is based on the code in FC2 /etc/init.d/ntpd
58: my $fw_chain = 'RH-Firewall-1-INPUT';
59: my $iptables = '/sbin/iptables';
1.27 albertel 60: if (! -e $iptables) {
61: $iptables = '/usr/sbin/iptables';
62: if (! -e $iptables) {
63: print("Unable to find iptables command\n");
64: }
65: }
1.22 matthew 66: my $lond_port = 5663;
67: my $lonhttpd_port = 8080;
1.20 matthew 68:
69: sub firewall_open_port {
70: return if (! &firewall_is_active);
71: if (! `$iptables -L -n 2>/dev/null | grep $fw_chain | wc -l`) { return; }
72: # iptables is running with our chain
73: #
74: # We could restrict the servers allowed to attempt to communicate
75: # here, but the logistics of updating the /home/httpd/lonTabs/host.tab
76: # file are likely to be a problem
1.22 matthew 77: foreach my $port ($lond_port,$lonhttpd_port) {
78: print "Opening firewall access on port $port.\n";
79:
80: my $firewall_command =
81: "$iptables -I $fw_chain -p tcp -d 0/0 --dport $port -j ACCEPT";
82: system($firewall_command);
83: my $return_status = $?>>8;
84: if ($return_status == 1) {
85: # Error
86: print "Error opening port.\n";
87: } elsif ($return_status == 2) {
88: # Bad command
89: print "Bad command error opening port. Command was\n".
90: " ".$firewall_command."\n";
91: }
1.20 matthew 92: }
1.22 matthew 93:
1.20 matthew 94: }
95:
96: sub firewall_is_port_open {
97: # returns 1 if the firewall port is open, 0 if not.
98: #
99: # check if firewall is active or installed
100: return if (! &firewall_is_active);
101: if (`$iptables -L -n 2>/dev/null | grep "tcp dpt:$port"`) {
102: return 1;
103: } else {
104: return 0;
105: }
106: }
107:
108: sub firewall_is_active {
109: if (-e '/proc/net/ip_tables_names') {
110: return 1;
111: } else {
112: return 0;
113: }
114: }
115:
116: sub firewall_close_port {
117: return if (! &firewall_is_active);
1.22 matthew 118: foreach my $port ($lond_port,$lonhttpd_port) {
119: print "Closing firewall access on port $port.\n";
120: my $firewall_command =
121: "$iptables -D $fw_chain -p tcp -d 0/0 --dport $port -j ACCEPT";
122: system($firewall_command);
123: my $return_status = $?>>8;
124: if ($return_status == 1) {
125: # Error
126: print "Error closing port.\n";
127: } elsif ($return_status == 2) {
128: # Bad command
129: print "Bad command error closing port. Command was\n".
130: " ".$firewall_command."\n";
131: }
1.20 matthew 132: }
133: }
134:
135: } # End firewall variable scope
136:
1.11 albertel 137: sub stop_daemon {
1.19 albertel 138: my ($daemon,$killallname)=@_;
1.11 albertel 139: my $pidfile="/home/httpd/perl/logs/$daemon.pid";
140:
1.24 albertel 141: printf("%-15s ",$daemon);
1.11 albertel 142: if (-e $pidfile) {
143: open(PIDFILE,$pidfile);
144: my $daemonpid=<PIDFILE>;
145: chomp($daemonpid);
146: kill TERM => $daemonpid;
1.32 ! albertel 147: my $count=0;
! 148: while ($count++ < 5 && kill(0 => $daemonpid)) {
! 149: sleep 1;
! 150: }
1.11 albertel 151: if (kill 0 => $daemonpid) {
152: kill KILL => $daemonpid;
1.26 albertel 153: sleep 1;
1.11 albertel 154: if (kill 0 => $daemonpid) {
1.19 albertel 155: print("failed to kill");
1.11 albertel 156: } else {
1.19 albertel 157: print("killed");
1.11 albertel 158: }
159: } else {
1.19 albertel 160: print("stopped");
1.11 albertel 161: }
1.19 albertel 162: } else {
163: print("not running");
164: }
165: system("killall -q -0 $killallname");
166: if ($? == 0) {
167: system("killall -q $killallname");
168: print(", killed off extraneous processes");
1.11 albertel 169: }
1.24 albertel 170: unlink($pidfile);
1.19 albertel 171: print("\n");
1.11 albertel 172: }
173:
1.30 albertel 174: sub clean_sockets {
175: opendir(SOCKETS,"/home/httpd/sockets/");
176: while (my $fname=readdir(SOCKETS)) {
177: next if (-d $fname
178: || $fname=~/(mysqlsock|maximasock|\Q$perlvar{'lonSockDir'}\E)/);
179: unlink("/home/httpd/sockets/$fname");
180: }
181: }
1.20 matthew 182:
1.29 albertel 183: if ($command eq "restart") {
1.12 albertel 184: print 'Restarting LON-CAPA'."\n";
185: print 'Ending LON-CAPA client and daemon processes'."\n";
1.28 raeburn 186: foreach my $daemon ('lonsql','lond','lonc','lonhttpd','lonmemcached','lonmaxima') {
1.19 albertel 187: my $killallname=$daemon;
188: if ($daemon eq 'lonc') { $killallname='loncnew'; }
189: &stop_daemon($daemon,$killallname);
1.12 albertel 190: }
191: print 'Starting LON-CAPA client and daemon processes (please be patient)'.
192: "\n";
1.18 albertel 193: system("su www -c '/home/httpd/perl/loncron --justcheckdaemons'");
1.16 albertel 194: } elsif ($command eq "stop") {
1.6 harris41 195: print 'Stopping LON-CAPA'."\n";
1.28 raeburn 196: foreach my $daemon ('lonsql','lond','lonc','lonhttpd','lonmemcached','lonmaxima') {
1.19 albertel 197: my $killallname=$daemon;
198: if ($daemon eq 'lonc') { $killallname='loncnew'; }
199: &stop_daemon($daemon,$killallname);
1.11 albertel 200: }
1.20 matthew 201: &firewall_close_port();
1.30 albertel 202: &clean_sockets();
1.16 albertel 203: } elsif ($command eq "start") {
1.20 matthew 204: &firewall_open_port();
1.12 albertel 205: print 'Starting LON-CAPA'."\n";
206: print 'Starting LON-CAPA client and daemon processes (please be patient)'.
207: "\n";
1.18 albertel 208: system("su www -c '/home/httpd/perl/loncron --justcheckdaemons'");
1.25 albertel 209: } elsif ($command eq "reload") {
210: print 'Reload LON-CAPA config files'."\n";
211: system("su www -c '/home/httpd/perl/loncron --justreload'");
1.16 albertel 212: } elsif ($command eq "status") {
1.1 harris41 213: $response=`/bin/cat /home/httpd/perl/logs/*.pid 2>&1`;
214: if ($response=~/No such file or directory/) {
1.6 harris41 215: print 'LON-CAPA is not running.'."\n";
1.18 albertel 216: } else {
1.6 harris41 217: print 'LON-CAPA is running.'."\n";
1.18 albertel 218: system("su www -c '/home/httpd/perl/loncron --justcheckconnections'");
1.1 harris41 219: }
1.20 matthew 220: if (! &firewall_is_active) {
221: print 'The iptables firewall is not active'."\n";
222: }
223: if (&firewall_is_port_open()) {
224: print 'The LON-CAPA port is open in firewall.'."\n";
225: } elsif (&firewall_is_active) {
226: print 'The LON-CAPA port is NOT open in running firewall!'."\n";
227: }
1.16 albertel 228: } else {
1.18 albertel 229: print 'You need to specify one of restart|stop|start|status on the command line.'."\n";
1.1 harris41 230: }
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