Nagios监控nginx服务详细过程

#!/bin/sh
PROGNAME=`basename
1. #!/bin/sh
3. PROGNAME=`basename $0`
4. VERSION=\\\"Version 1.1,\\\"
5. AUTHOR=\\\"tim man\\\"
7. ST_OK=0
8. ST_WR=1
9. ST_CR=2
10. ST_UK=3
11. hostname=\\\"localhost\\\"
12. port=80
13. path_pid=/var/run
14. name_pid=\\\"nginx.pid\\\"
15. status_page=\\\"nginx_status\\\"
16. pid_check=1
17. secure=0
19. print_version() {
20. echo \\\"$VERSION $AUTHOR\\\"
21. }
23. print_help() {
24. print_version $PROGNAME $VERSION
25. echo \\\"\\\"
26. echo \\\"$PROGNAME is a Nagios plugin to check whether nginx is running.\\\"
27. echo \\\"It also parses the nginx\\\'s status page to get requests and\\\"
28. echo \\\"connections per second as well as requests per connection. You\\\"
29. echo \\\"may have to alter your nginx configuration so that the plugin\\\"
30. echo \\\"can access the server\\\'s status page.\\\"
31. echo \\\"The plugin is highly configurable for this reason. See below for\\\"
32. echo \\\"available options.\\\"
33. echo \\\"\\\"
34. echo \\\"$PROGNAME -H localhost -P 80 -p /var/run -n nginx.pid \\\"
35. echo \\\" -s nginx_statut -o /tmp [-w INT] [-c INT] [-S] [-N]\\\"
36. echo \\\"\\\"
37. echo \\\"Options:\\\"
38. echo \\\" -H/--hostname)\\\"
39. echo \\\" Defines the hostname. Default is: localhost\\\"
40. echo \\\" -P/--port)\\\"
41. echo \\\" Defines the port. Default is: 80\\\"
42. echo \\\" -p/--path-pid)\\\"
43. echo \\\" Path where nginx\\\'s pid file is being stored. You might need\\\"
44. echo \\\" to alter this path according to your distribution. Default\\\"
45. echo \\\" is: /var/run\\\"
46. echo \\\" -n/--name_pid)\\\"
47. echo \\\" Name of the pid file. Default is: nginx.pid\\\"
48. echo \\\" -N/--no-pid-check)\\\"
49. echo \\\" Turn this on, if you don\\\'t want to check for a pid file\\\"
50. echo \\\" whether nginx is running, e.g. when you\\\'re checking a\\\"
51. echo \\\" remote server. Default is: off\\\"
52. echo \\\" -s/--status-page)\\\"
53. echo \\\" Name of the server\\\'s status page defined in the location\\\"
54. echo \\\" directive of your nginx configuration. Default is:\\\"
55. echo \\\" nginx_status\\\"
56. echo \\\" -S/--secure)\\\"
57. echo \\\" In case your server is only reachable via SSL, use this\\\"
58. echo \\\" this switch to use HTTPS instead of HTTP. Default is: off\\\"
59. echo \\\" -w/--warning)\\\"
60. echo \\\" Sets a warning level for requests per second. Default is: off\\\"
61. echo \\\" -c/--critical)\\\"
62. echo \\\" Sets a critical level for requests per second. Default is:\\\"
63. echo \\\" off\\\"
64. exit $ST_UK
65. }
67. while test -n \\\"$1\\\"; do
68. case \\\"$1\\\" in
69. -help|-h)
70. print_help
71. exit $ST_UK
72. ;;
73. --version|-v)
74. print_version $PROGNAME $VERSION
75. exit $ST_UK
76. ;;
77. --hostname|-H)
78. hostname=$2
79. shift
80. ;;
81. --port|-P)
82. port=$2
83. shift
84. ;;
85. --path-pid|-p)
86. path_pid=$2
87. shift
88. ;;
89. --name-pid|-n)
90. name_pid=$2
91. shift
92. ;;
93. --no-pid-check|-N)
94. pid_check=0
95. ;;
96. --status-page|-s)
97. status_page=$2
98. shift
99. ;;
100. --secure|-S)
101. secure=1
102. ;;
103. --warning|-w)
104. warning=$2
105. shift
106. ;;
107. --critical|-c)
108. critical=$2
109. shift
110. ;;
111. *)
112. echo \\\"Unknown argument: $1\\\"
113. print_help
114. exit $ST_UK
115. ;;
116. esac
117. shift
118. done
120. get_wcdiff() {
121. if [ ! -z \\\"$warning\\\" -a ! -z \\\"$critical\\\" ]
122. then
123. wclvls=1
125. if [ ${warning} -ge ${critical} ]
126. then
127. wcdiff=1
128. fi
129. elif [ ! -z \\\"$warning\\\" -a -z \\\"$critical\\\" ]
130. then
131. wcdiff=2
132. elif [ -z \\\"$warning\\\" -a ! -z \\\"$critical\\\" ]
133. then
134. wcdiff=3
135. fi
136. }
138. val_wcdiff() {
139. if [ \\\"$wcdiff\\\" = 1 ]
140. then
141. echo \\\"Please adjust your warning/critical thresholds. The warning \\\\
142. must be lower than the critical level!\\\"
143. exit $ST_UK
144. elif [ \\\"$wcdiff\\\" = 2 ]
145. then
146. echo \\\"Please also set a critical value when you want to use \\\\
147. warning/critical thresholds!\\\"
148. exit $ST_UK
149. elif [ \\\"$wcdiff\\\" = 3 ]
150. then
151. echo \\\"Please also set a warning value when you want to use \\\\
152. warning/critical thresholds!\\\"
153. exit $ST_UK
154. fi
155. }
157. check_pid() {
158. if [ -f \\\"$path_pid/$name_pid\\\" ]
159. then
160. retval=0
161. else
162. retval=1
163. fi
164. }
166. get_status() {
167. if [ \\\"$secure\\\" = 1 ]
168. then
169. wget_opts=\\\"-O- -q -t 3 -T 3 --no-check-certificate\\\"
170. #out1=`/usr/bin/wget ${wget_opts} http://${hostname}:${port}/${status_page}`
171. out1=`/usr/bin/wget -O- -q -t 3 -T 3 http://localhost:80/nginx_status`
172. sleep 1
173. out2=`/usr/bin/wget -O- -q -t 3 -T 3 http://localhost:80/nginx_status`
174. else
175. wget_opts=\\\"-O- -q -t 3 -T 3\\\"
176. out1=`/usr/bin/wget -O- -q -t 3 -T 3 http://localhost:80/nginx_status`
177. sleep 1
178. out2=`/usr/bin/wget -O- -q -t 3 -T 3 http://localhost:80/nginx_status`
179. fi
180. if [ -z \\\"$out1\\\" -o -z \\\"$out2\\\" ]
181. then
182. echo \\\"out1:$out1 out2:$out2, UNKNOWN - Local copy/copies of $status_page is empty.\\\"
183. exit $ST_UK
184. fi
185. }
187. get_vals() {
188. tmp1_reqpsec=`echo ${out1}|awk \\\'{print $10}\\\'`
189. tmp2_reqpsec=`echo ${out2}|awk \\\'{print $10}\\\'`
190. reqpsec=`expr $tmp2_reqpsec - $tmp1_reqpsec`
192. tmp1_conpsec=`echo ${out1}|awk \\\'{print $9}\\\'`
193. tmp2_conpsec=`echo ${out2}|awk \\\'{print $9}\\\'`
194. conpsec=`expr $tmp2_conpsec - $tmp1_conpsec`
196. reqpcon=`echo \\\"scale=2; $reqpsec / $conpsec\\\" | bc -l`
197. if [ \\\"$reqpcon\\\" = \\\".99\\\" ]
198. then
199. reqpcon=\\\"1.00\\\"
200. fi
201. }
203. do_output() {
204. output=\\\"nginx is running. $reqpsec requests per second, $conpsec connections per second ($reqpcon requests per connection)\\\"
205. }
207. do_perfdata() {
208. perfdata=\\\"\\\'reqpsec\\\'=$reqpsec \\\'conpsec\\\'=$conpsec \\\'conpreq\\\'=$reqpcon\\\"
209. }
211. # Here we
212. get_wcdiff
213. val_wcdiff
215. if [ ${pid_check} = 1 ]
216. then
217. check_pid
218. if [ \\\"$retval\\\" = 1 ]
219. then
220. echo \\\"There\\\'s no pid file for nginx. Is nginx running? Please also make sure whether your pid path and name is correct.\\\"
221. exit $ST_CR
222. fi
223. fi
225. get_status
226. get_vals
227. do_output
228. do_perfdata
230. if [[ -n \\\"$warning\\\" ]] && [[ -n \\\"$critical\\\" ]]
231. then
232. if [[ \\\"$reqpsec\\\" -ge \\\"$warning\\\" ]] && [[ \\\"$reqpsec\\\" -lt \\\"$critical\\\" ]]
233. then
234. echo \\\"WARNING - ${output} | ${perfdata}\\\"
235. exit $ST_WR
236. elif [ \\\"$reqpsec\\\" -ge \\\"$critical\\\" ]
237. then
238. echo \\\"CRITICAL - ${output} | ${perfdata}\\\"
239. exit $ST_CR
240. else
241. echo \\\"OK - ${output} | ${perfdata} ]\\\"
242. exit $ST_OK
243. fi
244. else
245. echo \\\"OK - ${output} | ${perfdata}\\\"
246. exit $ST_OK
247. fi
`