У меня есть стек LAMP под управлением Fedora 12, и я запускаю следующую инструкцию через командную строку на сервере:
netstat -anp |grep 'tcp\|udp' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
Насколько я понимаю, это должно показать мне IP-адреса подключенных процессов и сколько соединений на каждый IP-адрес, правильно?
Мне понадобится помощь в интерпретации результатов. Из 250 подключений 140 не показывают IP (просто пустой), 80 - из моей подчиненной БД, 20 - из IP 0.0.0.0 и только 10 - из нормальных подключений к серверу.
Мои вопросы таковы: 1. Что представляют собой 140 пустых IP-адресов? 2. Почему моей подчиненной БД (MySQL) требуется 80 подключений? Можно ли уменьшить это число? Если да, то как? 3. Что такое 20 подключений 0.0.0.0?
Прошу прощения, если это банальный вопрос, но я относительно новичок в этом.
Добавление части netstat -anp (просто удалил IP-адреса моих серверов и пришлось обрезать из-за ограничения длины сообщения):
Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program nams tcp 0 0 0.0.0.0:2234 0.0.0.0:* LISTEN 1616/sshd tcp 0 0 my-server-ip:443 201.23.177.150:18846 SYN_RECV - tcp 0 0 my-server-ip:443 182.156.150.187:41594 SYN_RECV - tcp 0 0 my-server-ip:443 151.61.126.161:50591 SYN_RECV - tcp 0 0 my-server-ip:443 119.30.38.84:51449 SYN_RECV - tcp 0 0 my-server-ip:443 190.121.239.151:38961 SYN_RECV - tcp 0 0 my-server-ip:443 201.23.160.144:54884 SYN_RECV - tcp 0 0 my-server-ip:443 151.61.126.161:50592 SYN_RECV - tcp 0 0 0.0.0.0:993 0.0.0.0:* LISTEN 1625/dovecot tcp 0 0 0.0.0.0:995 0.0.0.0:* LISTEN 1625/dovecot tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 2393/mysqld tcp 0 0 0.0.0.0:110 0.0.0.0:* LISTEN 1625/dovecot tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN 1625/dovecot tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1302/rpcbind tcp 0 0 my-server-ip:80 201.23.177.72:17927 SYN_RECV - tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1436/cupsd tcp 0 0 0.0.0.0:44183 0.0.0.0:* LISTEN 1356/rpc.statd tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 1718/master tcp 0 0 my-server-ip:46961 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:46978 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47147 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47264 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47250 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47243 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47273 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47267 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:46955 my-slave-db-ip:3306 TIME_WAIT - tcp 0 70 my-server-ip:47282 my-slave-db-ip:3306 ESTABLISHED 25697/httpd tcp 0 0 my-server-ip:47034 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:41433 my-slave-db-ip:3306 ESTABLISHED 24983/httpd tcp 0 0 my-server-ip:46986 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47247 my-slave-db-ip:3306 TIME_WAIT - tcp 0 52 my-server-ip:2234 177.42.224.14:57947 ESTABLISHED 25774/0 tcp 0 0 my-server-ip:46969 my-slave-db-ip:3306 TIME_WAIT - tcp 0 70 my-server-ip:41504 my-slave-db-ip:3306 ESTABLISHED 24982/httpd tcp 0 0 my-server-ip:47271 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:46970 my-slave-db-ip:3306 TIME_WAIT - tcp 0 69 my-server-ip:47275 my-slave-db-ip:3306 ESTABLISHED 25836/httpd tcp 0 0 my-server-ip:46953 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47080 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47094 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47019 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:46956 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:46963 my-slave-db-ip:3306 TIME_WAIT - tcp 0 70 my-server-ip:46930 my-slave-db-ip:3306 ESTABLISHED 24976/httpd tcp 0 0 my-server-ip:46906 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47272 my-slave-db-ip:3306 TIME_WAIT - tcp 0 70 my-server-ip:46888 my-slave-db-ip:3306 ESTABLISHED 25709/httpd tcp 0 0 my-server-ip:2234 177.42.224.14:64099 ESTABLISHED 25866/sshd: root@no tcp 0 0 my-server-ip:47112 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47221 my-slave-db-ip:3306 TIME_WAIT - tcp 0 240 my-server-ip:47276 my-slave-db-ip:3306 ESTABLISHED 25374/httpd tcp 0 0 my-server-ip:47109 my-slave-db-ip:3306 TIME_WAIT - tcp 0 240 my-server-ip:47278 my-slave-db-ip:3306 ESTABLISHED 25711/httpd tcp 0 0 my-server-ip:41195 my-slave-db-ip:3306 ESTABLISHED 24966/httpd tcp 0 0 my-server-ip:46975 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47027 my-slave-db-ip:3306 TIME_WAIT - tcp 0 86 my-server-ip:47281 my-slave-db-ip:3306 ESTABLISHED 25599/httpd tcp 0 70 my-server-ip:46993 my-slave-db-ip:3306 ESTABLISHED 25841/httpd tcp 0 0 my-server-ip:47119 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47165 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47032 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47054 my-slave-db-ip:3306 TIME_WAIT - tcp 0 1 my-server-ip:47322 94.100.187.197:25 SYN_SENT 25909/smtp tcp 0 0 my-server-ip:47185 my-slave-db-ip:3306 TIME_WAIT - tcp 0 70 my-server-ip:46893 my-slave-db-ip:3306 ESTABLISHED 25712/httpd tcp 0 0 my-server-ip:41273 my-slave-db-ip:3306 ESTABLISHED 24974/httpd tcp 0 0 my-server-ip:47076 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47214 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47241 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47176 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47012 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:3306 my-slave-db-ip:57117 ESTABLISHED 2393/mysqld tcp 0 0 my-server-ip:143 177.42.224.14:62179 ESTABLISHED 23981/imap-login tcp 0 0 my-server-ip:47060 my-slave-db-ip:3306 TIME_WAIT - tcp 0 240 my-server-ip:47280 my-slave-db-ip:3306 ESTABLISHED 25602/httpd tcp 0 0 my-server-ip:46967 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47003 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:46972 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:46946 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47202 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47017 my-slave-db-ip:3306 TIME_WAIT - tcp 0 644 my-server-ip:46811 my-slave-db-ip:3306 ESTABLISHED 25604/httpd tcp 0 0 my-server-ip:47030 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47253 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47044 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47274 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 my-server-ip:47096 my-slave-db-ip:3306 TIME_WAIT - tcp 0 240 my-server-ip:47277 my-slave-db-ip:3306 ESTABLISHED 25842/httpd tcp 0 0 my-server-ip:47269 my-slave-db-ip:3306 TIME_WAIT - tcp 0 240 my-server-ip:47279 my-slave-db-ip:3306 ESTABLISHED 25506/httpd tcp 0 490 my-server-ip:46673 my-slave-db-ip:3306 ESTABLISHED 25665/httpd tcp 0 0 my-server-ip:47045 my-slave-db-ip:3306 TIME_WAIT - tcp 0 0 :::2234 :::* LISTEN 1616/sshd tcp 0 0 :::443 :::* LISTEN 24956/httpd tcp 0 0 :::111 :::* LISTEN 1302/rpcbind tcp 0 0 :::80 :::* LISTEN 24956/httpd tcp 0 0 ::1:631 :::* LISTEN 1436/cupsd tcp 0 0 :::25 :::* LISTEN 1718/master tcp 0 0 ::ffff:my-server-ip:443 ::ffff:88.154.220.155:33982 ESTABLISHED 25842/httpd tcp 0 47 ::ffff:my-server-ip:443 ::ffff:186.122.246.21:52748 ESTABLISHED 25837/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:83.178.136.202:55078 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55984 ESTABLISHED 25608/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:83.178.136.202:41350 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:90.210.173.3:51483 ESTABLISHED 25697/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55965 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.144.158.19:40385 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:83.178.136.202:47388 TIME_WAIT - tcp 0 6230 ::ffff:my-server-ip:443 ::ffff:106.197.152.19:48216 FIN_WAIT1 - tcp 1 0 ::ffff:my-server-ip:80 ::ffff:80.7.104.8:36967 CLOSE_WAIT 24974/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55968 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:93.146.164.167:50292 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:206.53.54.187:38688 ESTABLISHED 25374/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:81.136.129.137:52966 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55966 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:220.255.1.131:8102 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:41.222.192.226:64538 ESTABLISHED 25832/httpd tcp 1 0 ::ffff:my-server-ip:80 ::ffff:80.7.104.8:60849 CLOSE_WAIT 24966/httpd tcp 0 513 ::ffff:my-server-ip:443 ::ffff:187.80.54.17:41707 FIN_WAIT1 - tcp 1 0 ::ffff:my-server-ip:80 ::ffff:80.7.104.8:57877 CLOSE_WAIT 24983/httpd tcp 0 0 ::ffff:my-server-ip:443 ::ffff:180.178.25.61:5453 ESTABLISHED 25506/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.144.158.195:4773 FIN_WAIT2 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:79.26.90.157:24409 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:197.200.85.248:13747 ESTABLISHED 25599/httpd tcp 0 6230 ::ffff:my-server-ip:443 ::ffff:41.53.45.194:33870 FIN_WAIT1 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55960 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:2.158.95.179:60733 ESTABLISHED 24976/httpd tcp 0 0 ::ffff:my-server-ip:443 ::ffff:213.30.118.99:55288 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.144.158.195:4769 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:187.80.191.105:45382 FIN_WAIT2 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55967 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:83.35.243.61:53344 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:83.178.136.202:40979 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:200.81.44.250:31556 TIME_WAIT - tcp 1 0 ::ffff:my-server-ip:80 ::ffff:80.7.104.8:57631 CLOSE_WAIT 24982/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55980 ESTABLISHED 25605/httpd tcp 0 11201 ::ffff:my-server-ip:443 ::ffff:93.65.181.47:53717 FIN_WAIT1 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:188.80.5.246:53477 FIN_WAIT2 - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:41.190.8.31:12272 ESTABLISHED 25217/httpd tcp 1 0 ::ffff:my-server-ip:80 ::ffff:80.7.104.8:39440 CLOSE_WAIT 25712/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:178.96.198.45:43412 TIME_WAIT - tcp 0 6230 ::ffff:my-server-ip:443 ::ffff:41.17.156.241:36223 FIN_WAIT1 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55983 ESTABLISHED 25713/httpd tcp 0 213 ::ffff:my-server-ip:443 ::ffff:187.119.160.67:59660 FIN_WAIT1 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55964 TIME_WAIT - tcp 1 455 ::ffff:my-server-ip:80 ::ffff:187.141.84.94:56325 CLOSING - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:197.252.77.141:5340 FIN_WAIT2 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:201.52.83.193:50966 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:151.26.113.212:26581 FIN_WAIT2 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:83.178.136.202:56702 TIME_WAIT - tcp 0 6230 ::ffff:my-server-ip:443 ::ffff:95.66.57.147:60665 FIN_WAIT1 - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:46.222.107.130:55683 TIME_WAIT - tcp 1 0 ::ffff:my-server-ip:80 ::ffff:201.23.160.151:29801 CLOSE_WAIT 25709/httpd tcp 0 0 ::ffff:my-server-ip:443 ::ffff:85.77.28.94:47593 ESTABLISHED 25841/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:151.60.30.6:48331 FIN_WAIT2 - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:117.229.95.166:48579 ESTABLISHED 25711/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:83.178.61.76:37227 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:83.178.136.202:43040 TIME_WAIT - tcp 1 0 ::ffff:my-server-ip:80 ::ffff:80.7.104.8:56232 CLOSE_WAIT 25604/httpd tcp 0 6230 ::ffff:my-server-ip:443 ::ffff:41.190.3.232:17447 FIN_WAIT1 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55985 ESTABLISHED 24991/httpd tcp 0 0 ::ffff:my-server-ip:443 ::ffff:186.182.113.12:59188 TIME_WAIT - tcp 1 0 ::ffff:my-server-ip:80 ::ffff:201.23.160.151:28767 CLOSE_WAIT 25665/httpd tcp 0 0 ::ffff:my-server-ip:443 ::ffff:178.240.115.10:53294 FIN_WAIT2 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:85.62.234.254:45417 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:2.232.62.163:43565 FIN_WAIT2 - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:117.230.223.85:48221 ESTABLISHED 25602/httpd tcp 0 1 ::ffff:my-server-ip:80 ::ffff:189.60.238.52:42449 FIN_WAIT1 - tcp 0 28 ::ffff:my-server-ip:443 ::ffff:101.2.90.246:50399 CLOSING - tcp 0 513 ::ffff:my-server-ip:443 ::ffff:49.201.248.245:60295 FIN_WAIT1 - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.4.135.249:65105 ESTABLISHED 25836/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:201.191.198.96:32171 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55982 ESTABLISHED 25843/httpd tcp 0 1 ::ffff:my-server-ip:80 ::ffff:189.131.12.46:55981 FIN_WAIT1 25546/httpd tcp 0 3533 ::ffff:my-server-ip:443 ::ffff:189.116.225.43:52473 ESTABLISHED 25727/httpd tcp 0 0 ::ffff:my-server-ip:80 ::ffff:83.178.136.202:40922 TIME_WAIT - tcp 0 0 ::ffff:my-server-ip:443 ::ffff:41.206.15.18:9701 TIME_WAIT - udp 0 0 0.0.0.0:39616 0.0.0.0:* 1356/rpc.statd udp 0 0 0.0.0.0:68 0.0.0.0:* 1384/dhclient udp 0 0 0.0.0.0:5353 0.0.0.0:* 1336/avahi-daemon: udp 0 0 0.0.0.0:111 0.0.0.0:* 1302/rpcbind udp 0 0 0.0.0.0:60021 0.0.0.0:* 1336/avahi-daemon: udp 0 0 0.0.0.0:629 0.0.0.0:* 1302/rpcbind udp 0 0 0.0.0.0:631 0.0.0.0:* 1436/cupsd udp 0 0 0.0.0.0:684 0.0.0.0:* 1356/rpc.statd udp 0 0 :::111 :::* 1302/rpcbind udp 0 0 :::629 :::* 1302/rpcbind Active UNIX domain sockets (servers and established) Proto RefCnt Flags Type State I-Node PID/Program name Path unix 2 [ ACC ] STREAM LISTENING 10999 1436/cupsd /var/run/cups/cups.sock unix 2 [ ACC ] STREAM LISTENING 11536 1625/dovecot /var/run/dovecot/dict-server unix 2 [ ACC ] STREAM LISTENING 11538 1625/dovecot /var/run/dovecot/login/default unix 2 [ ACC ] STREAM LISTENING 11543 1625/dovecot /var/run/dovecot/auth-worker.1626 unix 2 [ ACC ] STREAM LISTENING 11892 1718/master public/cleanup unix 2 [ ACC ] STREAM LISTENING 11924 1718/master public/flush unix 2 [ ACC ] STREAM LISTENING 11944 1718/master public/showq unix 2 [ ACC ] STREAM LISTENING 11567 1626/dovecot-auth /var/run/dovecot/auth-master unix 2 [ ACC ] STREAM LISTENING 10206 1316/dbus-daemon /var/run/dbus/system_bus_socket unix 2 [ ] DGRAM 7400 1/init @/com/ubuntu/upstart unix 2 [ ACC ] STREAM LISTENING 19051 2393/mysqld /var/lib/mysql/mysql.sock unix 23 [ ] DGRAM 10066 1256/rsyslogd /dev/log unix 2 [ ] DGRAM 7555 551/udevd @/org/kernel/udev/udevd unix 2 [ ] DGRAM 11146 1469/hald @/org/freedesktop/hal/udev_event unix 2 [ ACC ] STREAM LISTENING 11899 1718/master private/tlsmgr unix 2 [ ACC ] STREAM LISTENING 11903 1718/master private/rewrite unix 2 [ ACC ] STREAM LISTENING 11908 1718/master private/bounce unix 2 [ ACC ] STREAM LISTENING 11912 1718/master private/defer unix 2 [ ACC ] STREAM LISTENING 11916 1718/master private/trace unix 2 [ ACC ] STREAM LISTENING 11920 1718/master private/verify unix 2 [ ACC ] STREAM LISTENING 11928 1718/master private/proxymap unix 2 [ ACC ] STREAM LISTENING 11932 1718/master private/proxywrite unix 2 [ ACC ] STREAM LISTENING 11936 1718/master private/smtp unix 2 [ ACC ] STREAM LISTENING 11940 1718/master private/relay unix 2 [ ACC ] STREAM LISTENING 11948 1718/master private/error unix 2 [ ACC ] STREAM LISTENING 11952 1718/master private/retry unix 2 [ ACC ] STREAM LISTENING 11956 1718/master private/discard unix 2 [ ACC ] STREAM LISTENING 11960 1718/master private/local unix 2 [ ACC ] STREAM LISTENING 11964 1718/master private/virtual unix 2 [ ACC ] STREAM LISTENING 11968 1718/master private/lmtp unix 2 [ ACC ] STREAM LISTENING 11972 1718/master private/anvil unix 2 [ ACC ] STREAM LISTENING 11976 1718/master private/scache unix 2 [ ACC ] STREAM LISTENING 11082 1469/hald @/var/run/hald/dbus-zZ2k930EI0 unix 2 [ ACC ] STREAM LISTENING 11561 1626/dovecot-auth /var/spool/postfix/private/auth unix 2 [ ACC ] STREAM LISTENING 11124 1469/hald @/var/run/hald/dbus-3PhM3NhFOT unix 2 [ ACC ] STREAM LISTENING 10147 1302/rpcbind /var/run/rpcbind.sock unix 2 [ ACC ] STREAM LISTENING 10285 1336/avahi-daemon: /var/run/avahi-daemon/socket unix 2 [ ACC ] STREAM LISTENING 11594 1635/saslauthd /var/run/saslauthd/mux unix 2 [ ACC ] STREAM LISTENING 12223 1762/abrtd /var/run/abrt/abrt.socket unix 2 [ ACC ] STREAM LISTENING 11055 1461/acpid /var/run/acpid.socket unix 2 [ ACC ] STREAM LISTENING 11440 1595/pcscd /var/run/pcscd.comm unix 2 [ ] DGRAM 561886 25911/bounce unix 3 [ ] STREAM CONNECTED 561870 1978/tlsmgr private/tlsmgr unix 3 [ ] STREAM CONNECTED 561869 25910/smtp unix 2 [ ] DGRAM 561861 25910/smtp unix 3 [ ] STREAM CONNECTED 561856 1978/tlsmgr private/tlsmgr unix 3 [ ] STREAM CONNECTED 561855 25909/smtp unix 2 [ ] DGRAM 561847 25909/smtp unix 3 [ ] STREAM CONNECTED 561857 25909/smtp private/smtp unix 3 [ ] STREAM CONNECTED 561845 2111/qmgr unix 3 [ ] STREAM CONNECTED 561844 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561843 25906/proxymap unix 3 [ ] STREAM CONNECTED 561842 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561841 25906/proxymap unix 2 [ ] DGRAM 561829 25906/proxymap unix 3 [ ] STREAM CONNECTED 561837 25906/proxymap private/proxymap unix 3 [ ] STREAM CONNECTED 561828 25905/trivial-rewri unix 2 [ ] DGRAM 561820 25905/trivial-rewri unix 3 [ ] STREAM CONNECTED 561838 25905/trivial-rewri private/rewrite unix 3 [ ] STREAM CONNECTED 561819 2111/qmgr unix 3 [ ] STREAM CONNECTED 561804 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561803 25697/httpd unix 3 [ ] STREAM CONNECTED 561802 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561801 25697/httpd unix 3 [ ] STREAM CONNECTED 561798 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561797 25599/httpd unix 3 [ ] STREAM CONNECTED 561796 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561795 25599/httpd unix 3 [ ] STREAM CONNECTED 561792 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561791 25602/httpd unix 3 [ ] STREAM CONNECTED 561790 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561789 25602/httpd unix 3 [ ] STREAM CONNECTED 561787 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561786 25506/httpd unix 3 [ ] STREAM CONNECTED 561785 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561784 25506/httpd unix 3 [ ] STREAM CONNECTED 561782 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561781 25711/httpd unix 3 [ ] STREAM CONNECTED 561780 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561779 25711/httpd unix 3 [ ] STREAM CONNECTED 561777 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561776 25842/httpd unix 3 [ ] STREAM CONNECTED 561775 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561774 25842/httpd unix 3 [ ] STREAM CONNECTED 561772 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561771 25374/httpd unix 3 [ ] STREAM CONNECTED 561770 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561769 25374/httpd unix 3 [ ] STREAM CONNECTED 561760 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561759 25836/httpd unix 3 [ ] STREAM CONNECTED 561758 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 561757 25836/httpd unix 3 [ ] STREAM CONNECTED 560678 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 560677 25841/httpd unix 3 [ ] STREAM CONNECTED 560676 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 560675 25841/httpd unix 3 [ ] STREAM CONNECTED 560401 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 560400 24976/httpd unix 3 [ ] STREAM CONNECTED 560399 2393/mysqld /var/lib/mysql/mysql.sock unix 3 [ ] STREAM CONNECTED 560398 24976/httpd unix 3 [ ] STREAM CONNECTED 560346 1626/dovecot-auth /var/run/dovecot/login/default
- Что означают 140 пустых IP-адресов?
- Что такое 20 подключений 0.0.0.0?
Вы прошли -a вариант, который включает процессы, которые слушают, и сокеты домена Unix. Попробуйте бежать netstat -anp без какой-либо фильтрации / форматирования, и вы увидите полный результат. В 0.0.0.0 почти наверняка представляют собой процессы прослушивания. Пробелы почти наверняка являются доменными сокетами.
Почему моей подчиненной БД (MySQL) требуется 80 подключений? Можно ли уменьшить это число?
Потому что есть 80 вещей, которые тоже соединяются? Посмотрите на полный вывод netstat, и вы сможете узнать намного больше. Без каких-либо подробностей здесь никто не может сделать никаких полезных предположений. Число может быть уменьшено, опять же, нам потребуется больше деталей.