Selles artiklis käsitletakse projekti
Logidel põhineva analüütika vaatamiseks loome Grafana jaoks armatuurlaua.
Kõik huvilised, tere tulemast kassile.
Installige nginx, grafana standardsel viisil.
Clickhouse'i klastri installimine ansible-playbooki abil
Andmebaaside ja tabelite loomine Clickhouse'is
Selles
Teeme iga päringu ükshaaval igas Clickhouse klastri serveris.
Oluline märkus. Sellel real tuleb logs_cluster asendada teie klastri nimega faili clickhouse_remote_servers.xml vahel "remote_servers" ja "shard".
ENGINE = Distributed('logs_cluster', 'nginx', 'access_log_shard', rand())
Nginx-log-collector-rpm installimine ja konfigureerimine
Nginx-log-kollektoril pole pööret minutis. Siin
Installige rpm pakett nginx-log-collector-rpm
yum -y install yum-plugin-copr
yum copr enable antonpatsev/nginx-log-collector-rpm
yum -y install nginx-log-collector
systemctl start nginx-log-collector
Redigeerige konfiguratsiooni /etc/nginx-log-collector/config.yaml:
.......
upload:
table: nginx.access_log
dsn: http://ip-адрес-кластера-clickhouse:8123/
- tag: "nginx_error:"
format: error # access | error
buffer_size: 1048576
upload:
table: nginx.error_log
dsn: http://ip-адрес-кластера-clickhouse:8123/
Nginxi seadistamine
Üldine nginxi konfiguratsioon:
user nginx;
worker_processes auto;
#error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
log_format avito_json escape=json
'{'
'"event_datetime": "$time_iso8601", '
'"server_name": "$server_name", '
'"remote_addr": "$remote_addr", '
'"remote_user": "$remote_user", '
'"http_x_real_ip": "$http_x_real_ip", '
'"status": "$status", '
'"scheme": "$scheme", '
'"request_method": "$request_method", '
'"request_uri": "$request_uri", '
'"server_protocol": "$server_protocol", '
'"body_bytes_sent": $body_bytes_sent, '
'"http_referer": "$http_referer", '
'"http_user_agent": "$http_user_agent", '
'"request_bytes": "$request_length", '
'"request_time": "$request_time", '
'"upstream_addr": "$upstream_addr", '
'"upstream_response_time": "$upstream_response_time", '
'"hostname": "$hostname", '
'"host": "$host"'
'}';
access_log syslog_server=unix:/var/run/nginx_log.sock,nohostname,tag=nginx avito_json; #ClickHouse
error_log syslog_server=unix:/var/run/nginx_log.sock,nohostname,tag=nginx_error; #ClickHouse
#access_log /var/log/nginx/access.log main;
proxy_ignore_client_abort on;
sendfile on;
keepalive_timeout 65;
include /etc/nginx/conf.d/*.conf;
}
Üks virtuaalne host:
vhost1.conf:
upstream backend {
server ip-адрес-сервера-с-stub_http_server:8080;
server ip-адрес-сервера-с-stub_http_server:8080;
server ip-адрес-сервера-с-stub_http_server:8080;
server ip-адрес-сервера-с-stub_http_server:8080;
server ip-адрес-сервера-с-stub_http_server:8080;
}
server {
listen 80;
server_name vhost1;
location / {
proxy_pass http://backend;
}
}
Lisage faili /etc/hosts virtuaalsed hostid:
ip-адрес-сервера-с-nginx vhost1
HTTP serveri emulaator
HTTP-serveri emulaatorina kasutame
Nodejs-stub-serveril pole rpm. Siin
Installige pakett nodejs-stub-server ülesvoolu nginx rpm
yum -y install yum-plugin-copr
yum copr enable antonpatsev/nodejs-stub-server
yum -y install stub_http_server
systemctl start stub_http_server
Stressi testimine
Testime läbi Apache etaloniga.
Installige see:
yum install -y httpd-tools
Alustame testimist Apache etaloniga viies erinevas serveris:
while true; do ab -H "User-Agent: 1server" -c 10 -n 10 -t 10 http://vhost1/; sleep 1; done
while true; do ab -H "User-Agent: 2server" -c 10 -n 10 -t 10 http://vhost1/; sleep 1; done
while true; do ab -H "User-Agent: 3server" -c 10 -n 10 -t 10 http://vhost1/; sleep 1; done
while true; do ab -H "User-Agent: 4server" -c 10 -n 10 -t 10 http://vhost1/; sleep 1; done
while true; do ab -H "User-Agent: 5server" -c 10 -n 10 -t 10 http://vhost1/; sleep 1; done
Grafana seadistamine
Armatuurlauda Grafana ametlikult veebisaidilt ei leia.
Seetõttu teeme seda käsitsi.
Leiate minu salvestatud armatuurlaua
Samuti peate looma sisuga tabelimuutuja nginx.access_log
.
Singlestati taotluste koguarv:
SELECT
1 as t,
count(*) as c
FROM $table
WHERE $timeFilter GROUP BY t
Singlestat ebaõnnestunud taotlused:
SELECT
1 as t,
count(*) as c
FROM $table
WHERE $timeFilter AND status NOT IN (200, 201, 401) GROUP BY t
Singlestat ebaõnnestumise protsent:
SELECT
1 as t, (sum(status = 500 or status = 499)/sum(status = 200 or status = 201 or status = 401))*100 FROM $table
WHERE $timeFilter GROUP BY t
Singlestati keskmine reageerimisaeg:
SELECT
1, avg(request_time) FROM $table
WHERE $timeFilter GROUP BY 1
Singlestat maksimaalne reageerimisaeg:
SELECT
1 as t, max(request_time) as c
FROM $table
WHERE $timeFilter GROUP BY t
Loenduse olek:
$columns(status, count(*) as c) from $table
Andmete nagu pirukas väljastamiseks peate installima pistikprogrammi ja taaskäivitama grafana.
grafana-cli plugins install grafana-piechart-panel
service grafana-server restart
Piruka TOP 5 staatus:
SELECT
1, /* fake timestamp value */
status,
sum(status) AS Reqs
FROM $table
WHERE $timeFilter
GROUP BY status
ORDER BY Reqs desc
LIMIT 5
Lisaks annan taotlusi ilma ekraanipiltideta:
Loe http_user_agent:
$columns(http_user_agent, count(*) c) FROM $table
GoodRate/BadRate:
$rate(countIf(status = 200) AS good, countIf(status != 200) AS bad) FROM $table
Vastuse ajastus:
$rate(avg(request_time) as request_time) FROM $table
Ülesvoolu reaktsiooniaeg (1. ülesvoolu reaktsiooniaeg):
$rate(avg(arrayElement(upstream_response_time,1)) as upstream_response_time) FROM $table
Tabeliloenduse olek kõigi vhosti jaoks:
$columns(status, count(*) as c) from $table
Armatuurlaua üldvaade
Avg() ja quantile() võrdlus
avg()
kvantiil()
Järeldus:
Loodan, et kogukond osaleb nginx-log-collectori arendamisel/testimisel ja kasutamisel.
Ja kui keegi rakendab nginx-log-collectori, ütleb ta teile, kui palju nad kettale, RAM-ile ja protsessorile säästsid.
Telegrami kanalid:
Millisekundid:
Kellele millisekundid on olulised, palun kirjutage või hääletage selles
Allikas: www.habr.com