[taler-grid5k] 07/12: tets nginx local logs

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marco-boss pushed a commit to branch master
in repository grid5k.

commit bd3955b8c05844bd4eaf0d61eaadb500a6282942
Author: Boss Marco <bossm8@bfh.ch>
AuthorDate: Wed Jun 8 15:26:41 2022 +0200

    tets nginx local logs
---
 configs/etc/monitor/promtail-nginx.yaml    | 87 +++++++++++++++++++++++++++
 configs/etc/nginx/sites-available/exchange |  2 +-
 configs/etc/rsyslog.conf                   | 94 ++++++++++++++++++++++++++++++
 3 files changed, 182 insertions(+), 1 deletion(-)

diff --git a/configs/etc/monitor/promtail-nginx.yaml 
b/configs/etc/monitor/promtail-nginx.yaml
new file mode 100644
index 0000000..812801d
--- /dev/null
+++ b/configs/etc/monitor/promtail-nginx.yaml
@@ -0,0 +1,87 @@
+server:
+  http_listen_port: 9080
+  grpc_listen_port: 0
+
+positions:
+  filename: /tmp/positions.yaml
+
+clients:
+  - url: http://monitor.perf.taler:80/loki/api/v1/push
+
+scrape_configs:
+
+- job_name: nginx
+  static_configs:
+    - targets:
+        - localhost
+      labels:
+        job: nginx
+        __path__: /var/log/nginx/*log
+  relabel_configs:
+    - source_labels: [__syslog_message_app_name]
+      target_label: app
+  pipeline_stages:
+    - match:
+        selector: '{job="proxy"}'
+        stages:
+        - regex:
+            expression: 
'uri=/(?P<ep>[a-zA-Z]+)(?:/\w+)?(?:/(?P<act>[a-zA-Z-]+))? 
s=(?P<status>\d{3}).*urt=(?P<urt>\d+\.\d+|-) rt=(?P<response_time>\d+\.\d+) 
rl=(?P<request_length>\d+) bs=(?P<bytes_sent>\d+)'
+        - template:
+            source: endpoint
+            template: '{{ printf "%s-%s" .ep .act | trimSuffix "-" }}'
+        - template:
+            source: upstream_response_time
+            template: '{{ .urt | replace "-" "0" }}'
+        - labels:
+            endpoint:
+            status:
+        - metrics:
+            total_requests:
+              prefix: 'taler_requests_'
+              type: Counter
+              description: "Total Requests"
+              config:
+                match_all: true
+                action: inc
+            # Used to calculate 'over_time' statistics
+            response_time:
+              prefix: 'taler_requests_'
+              type: Gauge
+              description: "Time taken for Nginx to respond"
+              source: response_time
+              max_idle_duration: 24h
+              config:
+                action: set
+            # 
https://www.robustperception.io/how-does-a-prometheus-histogram-work
+            request_length_hist:
+              prefix: 'taler_requests_'
+              type: Histogram
+              description: "Request Length reported from Nginx"
+              source: request_length
+              max_idle_duration: 24h
+              config:
+                buckets: [1,10,50,100,200,500,1000,2000,5000] 
+            bytes_sent_hist:
+              prefix: 'taler_requests_'
+              type: Histogram
+              description: "Number of bytes sent, reported from Nginx"
+              source: bytes_sent
+              max_idle_duration: 24h
+              config:
+                buckets: [1,10,50,100,200,500,1000,2000,5000] 
+            response_time_hist:
+              prefix: 'taler_requests_'
+              type: Histogram
+              description: "Time taken for Nginx to respond"
+              source: response_time
+              max_idle_duration: 24h
+              config:
+                buckets: 
[0.001,0.0025,0.005,0.010,0.025,0.050,0.1,0.25,0.5,1,2,5]
+            upstream_response_time_hist:
+              prefix: 'taler_requests_'
+              type: Histogram
+              description: "Time taken for the Exchange to respond to Nginx"
+              source: upstream_response_time
+              max_idle_duration: 24h
+              config:
+                buckets: 
[0.001,0.0025,0.005,0.010,0.025,0.050,0.1,0.25,0.5,1,2,5]
diff --git a/configs/etc/nginx/sites-available/exchange 
b/configs/etc/nginx/sites-available/exchange
index 82731dd..d7eb4bc 100644
--- a/configs/etc/nginx/sites-available/exchange
+++ b/configs/etc/nginx/sites-available/exchange
@@ -36,7 +36,7 @@ server {
 
   server_name <PROXY_DOMAIN_HERE>;
 
-  access_log 
syslog:server=localhost,facility=user,tag=taler_exchange_proxy,severity=info 
taler if=$log_line;
+  # access_log 
syslog:server=localhost,facility=user,tag=taler_exchange_proxy,severity=info 
taler if=$log_line;
 
   allow 172.16.0.0/12;
   deny all;
diff --git a/configs/etc/rsyslog.conf b/configs/etc/rsyslog.conf
new file mode 100644
index 0000000..6d873af
--- /dev/null
+++ b/configs/etc/rsyslog.conf
@@ -0,0 +1,94 @@
+# /etc/rsyslog.conf configuration file for rsyslog
+#
+# For more information install rsyslog-doc and see
+# /usr/share/doc/rsyslog-doc/html/configuration/index.html
+#
+
+#################
+#### MODULES ####
+#################
+
+module(load="imuxsock" SysSock.RateLimit.Interval="0" SysSock.Annotate="on" 
SysSock.RateLimit.Burst="10000") # provides support for local system logging
+module(load="imklog")   # provides kernel logging support
+#module(load="immark")  # provides --MARK-- message capability
+
+# provides UDP syslog reception
+module(load="imudp")
+input(type="imudp" port="514")
+
+# provides TCP syslog reception
+#module(load="imtcp")
+#input(type="imtcp" port="514")
+
+
+###########################
+#### GLOBAL DIRECTIVES ####
+###########################
+
+#
+# Use traditional timestamp format.
+# To enable high precision timestamps, comment out the following line.
+#
+$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
+$ActionQueueWorkerThreads 10
+
+#
+# Set the default permissions for all log files.
+#
+$FileOwner root
+$FileGroup adm
+$FileCreateMode 0640
+$DirCreateMode 0755
+$Umask 0022
+
+#
+# Where to place spool and state files
+#
+$WorkDirectory /var/spool/rsyslog
+
+#
+# Include all config files in /etc/rsyslog.d/
+#
+$IncludeConfig /etc/rsyslog.d/*.conf
+
+
+###############
+#### RULES ####
+###############
+
+#
+# First some standard log files.  Log by facility.
+#
+auth,authpriv.*                        /var/log/auth.log
+*.*;auth,authpriv.none         -/var/log/syslog
+#cron.*                                /var/log/cron.log
+daemon.*                       -/var/log/daemon.log
+kern.*                         -/var/log/kern.log
+lpr.*                          -/var/log/lpr.log
+mail.*                         -/var/log/mail.log
+user.*                         -/var/log/user.log
+
+#
+# Logging for the mail system.  Split it up so that
+# it is easy to write scripts to parse these files.
+#
+mail.info                      -/var/log/mail.info
+mail.warn                      -/var/log/mail.warn
+mail.err                       /var/log/mail.err
+
+#
+# Some "catch-all" log files.
+#
+*.=debug;\
+       auth,authpriv.none;\
+       mail.none               -/var/log/debug
+*.=info;*.=notice;*.=warn;\
+       auth,authpriv.none;\
+       cron,daemon.none;\
+       mail.none               -/var/log/messages
+
+#
+# Emergencies are sent to everybody logged in.
+#
+*.emerg                                :omusrmsg:*
+

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