Annotation of loncom/init.d/loncontrol, revision 1.29
1.1 harris41 1: #!/usr/bin/perl
1.2 harris41 2: #
1.29 ! albertel 3: # $Id: loncontrol,v 1.28 2007/02/02 12:59:15 raeburn 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
40:
1.1 harris41 41: $command=$ARGV[0]; $command=~s/[^a-z]//g;
42:
43: $ENV{'PATH'}="/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin";
44: $ENV{'BASH_ENV'}="";
45:
1.20 matthew 46: { # Firewall variable scoping
47: # Firewall code is based on the code in FC2 /etc/init.d/ntpd
48: my $fw_chain = 'RH-Firewall-1-INPUT';
49: my $iptables = '/sbin/iptables';
1.27 albertel 50: if (! -e $iptables) {
51: $iptables = '/usr/sbin/iptables';
52: if (! -e $iptables) {
53: print("Unable to find iptables command\n");
54: }
55: }
1.22 matthew 56: my $lond_port = 5663;
57: my $lonhttpd_port = 8080;
1.20 matthew 58:
59: sub firewall_open_port {
60: return if (! &firewall_is_active);
61: if (! `$iptables -L -n 2>/dev/null | grep $fw_chain | wc -l`) { return; }
62: # iptables is running with our chain
63: #
64: # We could restrict the servers allowed to attempt to communicate
65: # here, but the logistics of updating the /home/httpd/lonTabs/host.tab
66: # file are likely to be a problem
1.22 matthew 67: foreach my $port ($lond_port,$lonhttpd_port) {
68: print "Opening firewall access on port $port.\n";
69:
70: my $firewall_command =
71: "$iptables -I $fw_chain -p tcp -d 0/0 --dport $port -j ACCEPT";
72: system($firewall_command);
73: my $return_status = $?>>8;
74: if ($return_status == 1) {
75: # Error
76: print "Error opening port.\n";
77: } elsif ($return_status == 2) {
78: # Bad command
79: print "Bad command error opening port. Command was\n".
80: " ".$firewall_command."\n";
81: }
1.20 matthew 82: }
1.22 matthew 83:
1.20 matthew 84: }
85:
86: sub firewall_is_port_open {
87: # returns 1 if the firewall port is open, 0 if not.
88: #
89: # check if firewall is active or installed
90: return if (! &firewall_is_active);
91: if (`$iptables -L -n 2>/dev/null | grep "tcp dpt:$port"`) {
92: return 1;
93: } else {
94: return 0;
95: }
96: }
97:
98: sub firewall_is_active {
99: if (-e '/proc/net/ip_tables_names') {
100: return 1;
101: } else {
102: return 0;
103: }
104: }
105:
106: sub firewall_close_port {
107: return if (! &firewall_is_active);
1.22 matthew 108: foreach my $port ($lond_port,$lonhttpd_port) {
109: print "Closing firewall access on port $port.\n";
110: my $firewall_command =
111: "$iptables -D $fw_chain -p tcp -d 0/0 --dport $port -j ACCEPT";
112: system($firewall_command);
113: my $return_status = $?>>8;
114: if ($return_status == 1) {
115: # Error
116: print "Error closing port.\n";
117: } elsif ($return_status == 2) {
118: # Bad command
119: print "Bad command error closing port. Command was\n".
120: " ".$firewall_command."\n";
121: }
1.20 matthew 122: }
123: }
124:
125: } # End firewall variable scope
126:
1.11 albertel 127: sub stop_daemon {
1.19 albertel 128: my ($daemon,$killallname)=@_;
1.11 albertel 129: my $pidfile="/home/httpd/perl/logs/$daemon.pid";
130:
1.24 albertel 131: printf("%-15s ",$daemon);
1.11 albertel 132: if (-e $pidfile) {
133: open(PIDFILE,$pidfile);
134: my $daemonpid=<PIDFILE>;
135: chomp($daemonpid);
136: kill TERM => $daemonpid;
1.26 albertel 137: sleep 1;
1.11 albertel 138: if (kill 0 => $daemonpid) {
139: kill KILL => $daemonpid;
1.26 albertel 140: sleep 1;
1.11 albertel 141: if (kill 0 => $daemonpid) {
1.19 albertel 142: print("failed to kill");
1.11 albertel 143: } else {
1.19 albertel 144: print("killed");
1.11 albertel 145: }
146: } else {
1.19 albertel 147: print("stopped");
1.11 albertel 148: }
1.19 albertel 149: } else {
150: print("not running");
151: }
152: system("killall -q -0 $killallname");
153: if ($? == 0) {
154: system("killall -q $killallname");
155: print(", killed off extraneous processes");
1.11 albertel 156: }
1.24 albertel 157: unlink($pidfile);
1.19 albertel 158: print("\n");
1.11 albertel 159: }
160:
1.20 matthew 161:
1.29 ! albertel 162: if ($command eq "restart") {
1.12 albertel 163: print 'Restarting LON-CAPA'."\n";
164: print 'Ending LON-CAPA client and daemon processes'."\n";
1.28 raeburn 165: foreach my $daemon ('lonsql','lond','lonc','lonhttpd','lonmemcached','lonmaxima') {
1.19 albertel 166: my $killallname=$daemon;
167: if ($daemon eq 'lonc') { $killallname='loncnew'; }
168: &stop_daemon($daemon,$killallname);
1.12 albertel 169: }
170: print 'Starting LON-CAPA client and daemon processes (please be patient)'.
171: "\n";
1.18 albertel 172: system("su www -c '/home/httpd/perl/loncron --justcheckdaemons'");
1.16 albertel 173: } elsif ($command eq "stop") {
1.6 harris41 174: print 'Stopping LON-CAPA'."\n";
1.28 raeburn 175: foreach my $daemon ('lonsql','lond','lonc','lonhttpd','lonmemcached','lonmaxima') {
1.19 albertel 176: my $killallname=$daemon;
177: if ($daemon eq 'lonc') { $killallname='loncnew'; }
178: &stop_daemon($daemon,$killallname);
1.11 albertel 179: }
1.20 matthew 180: &firewall_close_port();
1.16 albertel 181: } elsif ($command eq "start") {
1.20 matthew 182: &firewall_open_port();
1.12 albertel 183: print 'Starting LON-CAPA'."\n";
184: print 'Starting LON-CAPA client and daemon processes (please be patient)'.
185: "\n";
1.18 albertel 186: system("su www -c '/home/httpd/perl/loncron --justcheckdaemons'");
1.25 albertel 187: } elsif ($command eq "reload") {
188: print 'Reload LON-CAPA config files'."\n";
189: system("su www -c '/home/httpd/perl/loncron --justreload'");
1.16 albertel 190: } elsif ($command eq "status") {
1.1 harris41 191: $response=`/bin/cat /home/httpd/perl/logs/*.pid 2>&1`;
192: if ($response=~/No such file or directory/) {
1.6 harris41 193: print 'LON-CAPA is not running.'."\n";
1.18 albertel 194: } else {
1.6 harris41 195: print 'LON-CAPA is running.'."\n";
1.18 albertel 196: system("su www -c '/home/httpd/perl/loncron --justcheckconnections'");
1.1 harris41 197: }
1.20 matthew 198: if (! &firewall_is_active) {
199: print 'The iptables firewall is not active'."\n";
200: }
201: if (&firewall_is_port_open()) {
202: print 'The LON-CAPA port is open in firewall.'."\n";
203: } elsif (&firewall_is_active) {
204: print 'The LON-CAPA port is NOT open in running firewall!'."\n";
205: }
1.16 albertel 206: } else {
1.18 albertel 207: print 'You need to specify one of restart|stop|start|status on the command line.'."\n";
1.1 harris41 208: }
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