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