Annotation of loncom/init.d/loncontrol, revision 1.20
1.1 harris41 1: #!/usr/bin/perl
1.2 harris41 2: #
1.6 harris41 3: # The LearningOnline Network with CAPA
4: #
1.2 harris41 5: # Startup script for the LON-CAPA network processes
1.6 harris41 6: #
7: # YEAR=2000
8: # YEAR=2001
1.7 harris41 9: # YEAR=2002
10:
1.3 harris41 11: # chkconfig: 345 95 5
1.9 harris41 12: # description: LON-CAPA is a "network of knowledge". It is used to
1.6 harris41 13: # distribute knowledge resources and instructional management.
1.2 harris41 14: # processnames: lonc, lond, lonsql
15: # pidfiles: /home/httpd/perl/logs/lon*.pid
1.7 harris41 16: # config: /etc/httpd/conf/loncapa.conf
1.2 harris41 17: # config: /home/httpd/lonTabs/hosts.tab
18: # config: /home/httpd/lonTabs/spare.tab
19:
1.1 harris41 20: $command=$ARGV[0]; $command=~s/[^a-z]//g;
21:
22: $ENV{'PATH'}="/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin";
23: $ENV{'BASH_ENV'}="";
24:
1.20 ! matthew 25: { # Firewall variable scoping
! 26: # Firewall code is based on the code in FC2 /etc/init.d/ntpd
! 27: my $fw_chain = 'RH-Firewall-1-INPUT';
! 28: my $iptables = '/sbin/iptables';
! 29: my $port = 5663;
! 30:
! 31: sub firewall_open_port {
! 32: return if (! &firewall_is_active);
! 33: print "Opening firewall access on port $port\n";
! 34: if (! `$iptables -L -n 2>/dev/null | grep $fw_chain | wc -l`) { return; }
! 35: # iptables is running with our chain
! 36: #
! 37: # We could restrict the servers allowed to attempt to communicate
! 38: # here, but the logistics of updating the /home/httpd/lonTabs/host.tab
! 39: # file are likely to be a problem
! 40: my $firewall_command =
! 41: "$iptables -I $fw_chain -p tcp -d 0/0 --dport $port -j ACCEPT";
! 42: system($firewall_command);
! 43: my $return_status = $?>>8;
! 44: if ($return_status == 1) {
! 45: # Error
! 46: print "Error opening port.\n";
! 47: } elsif ($return_status == 2) {
! 48: # Bad command
! 49: print "Bad command error opening port. Command was\n".
! 50: " ".$firewall_command."\n";
! 51: }
! 52: }
! 53:
! 54: sub firewall_is_port_open {
! 55: # returns 1 if the firewall port is open, 0 if not.
! 56: #
! 57: # check if firewall is active or installed
! 58: return if (! &firewall_is_active);
! 59: if (`$iptables -L -n 2>/dev/null | grep "tcp dpt:$port"`) {
! 60: return 1;
! 61: } else {
! 62: return 0;
! 63: }
! 64: }
! 65:
! 66: sub firewall_is_active {
! 67: if (-e '/proc/net/ip_tables_names') {
! 68: return 1;
! 69: } else {
! 70: return 0;
! 71: }
! 72: }
! 73:
! 74: sub firewall_close_port {
! 75: return if (! &firewall_is_active);
! 76: print "Closing firewall access on port $port\n";
! 77: my $firewall_command =
! 78: "$iptables -D $fw_chain -p tcp -d 0/0 --dport $port -j ACCEPT";
! 79: system($firewall_command);
! 80: my $return_status = $?>>8;
! 81: if ($return_status == 1) {
! 82: # Error
! 83: print "Error closing port.\n";
! 84: } elsif ($return_status == 2) {
! 85: # Bad command
! 86: print "Bad command error closing port. Command was\n".
! 87: " ".$firewall_command."\n";
! 88: }
! 89: }
! 90:
! 91: } # End firewall variable scope
! 92:
1.11 albertel 93: sub stop_daemon {
1.19 albertel 94: my ($daemon,$killallname)=@_;
1.11 albertel 95: my $pidfile="/home/httpd/perl/logs/$daemon.pid";
96:
97: printf("%-10s ",$daemon);
98: if (-e $pidfile) {
99: open(PIDFILE,$pidfile);
100: my $daemonpid=<PIDFILE>;
101: chomp($daemonpid);
102: kill TERM => $daemonpid;
103: sleep 2;
104: if (kill 0 => $daemonpid) {
105: kill KILL => $daemonpid;
106: sleep 2;
107: if (kill 0 => $daemonpid) {
1.19 albertel 108: print("failed to kill");
1.11 albertel 109: } else {
1.19 albertel 110: print("killed");
1.11 albertel 111: }
112: } else {
1.19 albertel 113: print("stopped");
1.11 albertel 114: }
1.19 albertel 115: } else {
116: print("not running");
117: }
118: system("killall -q -0 $killallname");
119: if ($? == 0) {
120: system("killall -q $killallname");
121: print(", killed off extraneous processes");
1.11 albertel 122: }
1.19 albertel 123: print("\n");
1.11 albertel 124: }
125:
1.20 ! matthew 126:
1.16 albertel 127: if (($command eq "restartold") or ($command eq "reloadold")) {
1.6 harris41 128: print 'Restarting LON-CAPA'."\n";
129: print 'Ending LON-CAPA client and daemon processes'."\n";
1.13 albertel 130: foreach my $daemon ('lonsql','lond','lonc','lonhttpd') {
1.19 albertel 131: &stop_daemon($daemon,$daemon);
1.11 albertel 132: }
1.6 harris41 133: print 'Starting LON-CAPA client and daemon processes (please be patient)'.
134: "\n";
1.18 albertel 135: system("su www -c '/home/httpd/perl/loncron --oldlonc --justcheckdaemons'");
1.16 albertel 136: } elsif (($command eq "restart") or ($command eq "reload")) {
1.12 albertel 137: print 'Restarting LON-CAPA'."\n";
138: print 'Ending LON-CAPA client and daemon processes'."\n";
1.13 albertel 139: foreach my $daemon ('lonsql','lond','lonc','lonhttpd') {
1.19 albertel 140: my $killallname=$daemon;
141: if ($daemon eq 'lonc') { $killallname='loncnew'; }
142: &stop_daemon($daemon,$killallname);
1.12 albertel 143: }
144: print 'Starting LON-CAPA client and daemon processes (please be patient)'.
145: "\n";
1.18 albertel 146: system("su www -c '/home/httpd/perl/loncron --justcheckdaemons'");
1.16 albertel 147: } elsif ($command eq "stop") {
1.6 harris41 148: print 'Stopping LON-CAPA'."\n";
1.13 albertel 149: foreach my $daemon ('lonsql','lond','lonc','lonhttpd') {
1.19 albertel 150: my $killallname=$daemon;
151: if ($daemon eq 'lonc') { $killallname='loncnew'; }
152: &stop_daemon($daemon,$killallname);
1.11 albertel 153: }
1.20 ! matthew 154: &firewall_close_port();
1.16 albertel 155: } elsif ($command eq "startold") {
1.20 ! matthew 156: &firewall_open_port();
1.6 harris41 157: print 'Starting LON-CAPA'."\n";
158: print 'Starting LON-CAPA client and daemon processes (please be patient)'.
159: "\n";
1.18 albertel 160: system("su www -c '/home/httpd/perl/loncron --oldlonc --justcheckdaemons'");
1.16 albertel 161: } elsif ($command eq "start") {
1.20 ! matthew 162: &firewall_open_port();
1.12 albertel 163: print 'Starting LON-CAPA'."\n";
164: print 'Starting LON-CAPA client and daemon processes (please be patient)'.
165: "\n";
1.18 albertel 166: system("su www -c '/home/httpd/perl/loncron --justcheckdaemons'");
1.16 albertel 167: } elsif ($command eq "status") {
1.1 harris41 168: $response=`/bin/cat /home/httpd/perl/logs/*.pid 2>&1`;
169: if ($response=~/No such file or directory/) {
1.6 harris41 170: print 'LON-CAPA is not running.'."\n";
1.18 albertel 171: } else {
1.6 harris41 172: print 'LON-CAPA is running.'."\n";
1.18 albertel 173: system("su www -c '/home/httpd/perl/loncron --justcheckconnections'");
1.1 harris41 174: }
1.20 ! matthew 175: if (! &firewall_is_active) {
! 176: print 'The iptables firewall is not active'."\n";
! 177: }
! 178: if (&firewall_is_port_open()) {
! 179: print 'The LON-CAPA port is open in firewall.'."\n";
! 180: } elsif (&firewall_is_active) {
! 181: print 'The LON-CAPA port is NOT open in running firewall!'."\n";
! 182: }
1.16 albertel 183: } else {
1.18 albertel 184: print 'You need to specify one of restart|stop|start|status on the command line.'."\n";
1.1 harris41 185: }
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