charts.d/phpfpm.chart.sh

   1 #!/bin/bash
   2
   3 # if this chart is called X.chart.sh, then all functions and global variables
   4 # must start with X_
   5
   6 # first, you need open php-fpm status in php-fpm.conf
   7 # second, you need add status location in nginx.conf
   8 # you can see, https://easyengine.io/tutorials/php/fpm-status-page/
   9
  10 declare -A phpfpm_urls=()
  11 declare -A phpfpm_curl_opts=()
  12
  13 # _update_every is a special variable - it holds the number of seconds
  14 # between the calls of the _update() function
  15 phpfpm_update_every=
  16 phpfpm_priority=60000
  17
  18 declare -a phpfpm_response=()
  19 phpfpm_pool=""
  20 phpfpm_start_time=""
  21 phpfpm_start_since=0
  22 phpfpm_accepted_conn=0
  23 phpfpm_listen_queue=0
  24 phpfpm_max_listen_queue=0
  25 phpfpm_listen_queue_len=0
  26 phpfpm_idle_processes=0
  27 phpfpm_active_processes=0
  28 phpfpm_total_processes=0
  29 phpfpm_max_active_processes=0
  30 phpfpm_max_children_reached=0
  31 phpfpm_slow_requests=0
  32 phpfpm_get() {
  33         local opts="${1}" url="${2}"
  34
  35         phpfpm_response=($(curl -Ss ${opts} "${url}"))
  36         [ $? -ne 0 -o "${#phpfpm_response[@]}" -eq 0 ] && return 1
  37
  38         if [[ "${phpfpm_response[0]}" != "pool:" \
  39                 || "${phpfpm_response[2]}" != "process" \
  40                 || "${phpfpm_response[5]}" != "start" \
  41                 || "${phpfpm_response[12]}" != "accepted" \
  42                 || "${phpfpm_response[15]}" != "listen" \
  43                 || "${phpfpm_response[16]}" != "queue:" \
  44                 || "${phpfpm_response[26]}" != "idle" \
  45                 || "${phpfpm_response[29]}" != "active" \
  46                 || "${phpfpm_response[32]}" != "total" \
  47         ]]
  48                 then
  49                 echo >&2 "phpfpm: invalid response from phpfpm status server: ${phpfpm_response[*]}"
  50                 return 1
  51         fi
  52
  53         phpfpm_pool="${phpfpm_response[1]}"
  54         phpfpm_start_time="${phpfpm_response[7]} ${phpfpm_response[8]}"
  55         phpfpm_start_since="${phpfpm_response[11]}"
  56         phpfpm_accepted_conn="${phpfpm_response[14]}"
  57         phpfpm_listen_queue="${phpfpm_response[17]}"
  58         phpfpm_max_listen_queue="${phpfpm_response[21]}"
  59         phpfpm_listen_queue_len="${phpfpm_response[25]}"
  60         phpfpm_idle_processes="${phpfpm_response[28]}"
  61         phpfpm_active_processes="${phpfpm_response[31]}"
  62         phpfpm_total_processes="${phpfpm_response[34]}"
  63         phpfpm_max_active_processes="${phpfpm_response[38]}"
  64         phpfpm_max_children_reached="${phpfpm_response[42]}"
  65         if [[ "${phpfpm_response[43]}" == "slow" ]]
  66                 then
  67                 phpfpm_slow_requests="${phpfpm_response[45]}"
  68         else
  69                 phpfpm_slow_requests="-1"
  70         fi
  71
  72         if [[ -z "${phpfpm_pool}" \
  73                 || -z "${phpfpm_start_time}" \
  74                 || -z "${phpfpm_start_since}" \
  75                 || -z "${phpfpm_accepted_conn}" \
  76                 || -z "${phpfpm_listen_queue}" \
  77                 || -z "${phpfpm_max_listen_queue}" \
  78                 || -z "${phpfpm_listen_queue_len}" \
  79                 || -z "${phpfpm_idle_processes}" \
  80                 || -z "${phpfpm_active_processes}" \
  81                 || -z "${phpfpm_total_processes}" \
  82                 || -z "${phpfpm_max_active_processes}" \
  83                 || -z "${phpfpm_max_children_reached}" \
  84         ]]
  85                 then
  86                 echo >&2 "phpfpm: empty values got from phpfpm status server: ${phpfpm_response[*]}"
  87                 return 1
  88         fi
  89
  90         return 0
  91 }
  92
  93 # _check is called once, to find out if this chart should be enabled or not
  94 phpfpm_check() {
  95         if [ ${#phpfpm_urls[@]} -eq 0 ]; then
  96                 phpfpm_urls[local]="http://localhost/status"
  97         fi
  98
  99         local m
 100         for m in "${!phpfpm_urls[@]}"
 101         do
 102                 phpfpm_get "${phpfpm_curl_opts[$m]}" "${phpfpm_urls[$m]}"
 103                 if [ $? -ne 0 ]; then
 104                         echo >&2 "phpfpm: cannot find status on URL '${phpfpm_url[$m]}'. Please set phpfpm_urls[$m]='http://localhost/status' in $confd/phpfpm.conf"
 105                         unset phpfpm_urls[$m]
 106                         continue
 107                 fi
 108         done
 109
 110         if [ ${#phpfpm_urls[@]} -eq 0 ]; then
 111                 echo >&2 "phpfpm: no phpfpm servers found. Please set phpfpm_urls[name]='url' to whatever needed to get status to the phpfpm server, in $confd/phpfpm.conf"
 112                 return 1
 113         fi
 114
 115         # this should return:
 116         #  - 0 to enable the chart
 117         #  - 1 to disable the chart
 118
 119         return 0
 120 }
 121
 122 # _create is called once, to create the charts
 123 phpfpm_create() {
 124         local m
 125         for m in "${!phpfpm_urls[@]}"
 126         do
 127                 cat <<EOF
 128 CHART phpfpm_$m.connections '' "PHP-FPM Active Connections" "connections" phpfpm phpfpm.connections line $((phpfpm_priority + 1)) $phpfpm_update_every
 129 DIMENSION active '' absolute 1 1
 130 DDIMENSION maxActive 'max active' absolute 1 1
 131 DIMENSION idle '' absolute 1 1
 132
 133 CHART phpfpm_$m.requests '' "PHP-FPM Requests" "requests/s" phpfpm phpfpm.requests line $((phpfpm_priority + 2)) $phpfpm_update_every
 134 DIMENSION requests '' incremental 1 1
 135
 136 CHART phpfpm_$m.performance '' "PHP-FPM Performance" "status" phpfpm phpfpm.performance line $((phpfpm_priority + 3)) $phpfpm_update_every
 137 DIMENSION reached 'max children reached' absolute 1 1
 138 EOF
 139                 if [[ ${phpfpm_slow_requests} != "-1" ]]
 140                         then
 141                         cat <<EOF
 142 DIMENSION slow 'slow requests' absolute 1 1
 143 EOF
 144                 fi
 145         done
 146
 147         return 0
 148 }
 149
 150 # _update is called continiously, to collect the values
 151 phpfpm_update() {
 152         # the first argument to this function is the microseconds since last update
 153         # pass this parameter to the BEGIN statement (see bellow).
 154
 155         # do all the work to collect / calculate the values
 156         # for each dimension
 157         # remember: KEEP IT SIMPLE AND SHORT
 158
 159         local m
 160         for m in "${!phpfpm_urls[@]}"
 161         do
 162                 phpfpm_get "${phpfpm_curl_opts[$m]}" "${phpfpm_urls[$m]}"
 163                 if [ $? -ne 0 ]; then
 164                         continue
 165                 fi
 166
 167                 # write the result of the work.
 168                 cat <<EOF
 169 BEGIN phpfpm_$m.connections $1
 170 SET active = $((phpfpm_active_processes))
 171 SET maxActive = $((phpfpm_max_active_processes))
 172 SET idle = $((phpfpm_idle_processes))
 173 END
 174 BEGIN phpfpm_$m.requests $1
 175 SET requests = $((phpfpm_accepted_conn))
 176 END
 177 BEGIN phpfpm_$m.performance $1
 178 SET reached = $((phpfpm_max_children_reached))
 179 EOF
 180                 if [[ ${phpfpm_slow_requests} != "-1" ]]
 181                         then
 182                         cat << EOF
 183 SET slow = $((phpfpm_slow_requests))
 184 EOF
 185                 fi
 186                 echo "END"
 187         done
 188
 189         return 0
 190 }