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Merge pull request #647 from ungleich/new-prometheus

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New __prometheus_server, __prometheus_alertmanager, __grafana_dashboard
This commit is contained in:
Darko Poljak 2018-03-11 21:11:54 +01:00 committed by GitHub
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 130 additions and 112 deletions
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48
cdist/conf/type/__grafana_dashboard/manifest
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@ -7,44 +7,34 @@ case $os in
debian|devuan)
case $os_version in
8*|jessie)
__apt_key_uri grafana \
--name 'Grafana Release Signing Key' \
--uri https://packagecloud.io/gpg.key
require="__apt_key_uri/grafana" __apt_source grafana \
--uri https://packagecloud.io/grafana/stable/debian/ \
--distribution jessie \
--component main
__package apt-transport-https
require="__apt_source/grafana __package/apt-transport-https" __package grafana
require="__package/grafana" __start_on_boot grafana-server
apt_source_distribution=jessie
;;
9*|ascii/ceres)
__apt_key_uri grafana \
--name 'Grafana Release Signing Key' \
--uri https://packagecloud.io/gpg.key
require="__apt_key_uri/grafana" __apt_source grafana \
--uri https://packagecloud.io/grafana/stable/debian/ \
--distribution stretch \
--component main
__package apt-transport-https
require="__apt_source/grafana __package/apt-transport-https" __package grafana
require="__package/grafana" __start_on_boot grafana-server
apt_source_distribution=stretch
;;
*)
echo "Don't know how to install Grafana on $os $os_version. Send us a pull request!"
echo "Don't know how to install Grafana on $os $os_version. Send us a pull request!" >&2
exit 1
;;
esac
__apt_key_uri grafana \
--name 'Grafana Release Signing Key' \
--uri https://packagecloud.io/gpg.key
require="$require __apt_key_uri/grafana" __apt_source grafana \
--uri https://packagecloud.io/grafana/stable/debian/ \
--distribution $apt_source_distribution \
--component main
__package apt-transport-https
require="$require __apt_source/grafana __package/apt-transport-https" __package grafana
require="$require __package/grafana" __start_on_boot grafana-server
require="$require __start_on_boot/grafana-server" __process grafana-server --start "service grafana-server start"
;;
*)
echo "Don't know how to install Grafana on $os. Send us a pull request!"
echo "Don't know how to install Grafana on $os. Send us a pull request!" >&2
exit 1
;;
esac

26
cdist/conf/type/__prometheus_alertmanager/man.rst
View file

@ -10,27 +10,27 @@ DESCRIPTION
-----------
Install and configure Prometheus Alertmanager (https://prometheus.io/docs/alerting/alertmanager/).
This type create a daemontools-compatible service directory under /service/prometheus.
Daemontools (or something compatible) must be installed (in particular, the command `svc` must be executable).
Note that due to significant differences between Prometheus 1.x and 2.x, only 2.x is supported. It is your responsibility to make sure that your package manager installs 2.x. (On Devuan Ascii, the parameter `--install-from-backports` helps.)
REQUIRED PARAMETERS
-------------------
config
Alertmanager configuration file. It will be saved as /etc/alertmanager/alertmanager.yml on the target.
listen-address
Passed as web.listen-address.
OPTIONAL PARAMETERS
-------------------
storage-path
Where to put data. Default: /data/alertmanager. (Directory will be created if needed.)
retention-days
How long to retain data. Default: 90 days.
BOOLEAN PARAMETERS
------------------
None
install-from-backports
Valid on Devuan only. Will enable the backports apt source and install the package from there. Useful for getting a newer version.
EXAMPLES
@ -38,21 +38,15 @@ EXAMPLES
.. code-block:: sh
ALERTPORT=9093
__daemontools
__golang_from_vendor --version 1.8.1 # required for prometheus and many exporters
require="__daemontools __golang_from_vendor" __prometheus_alertmanager \
--with-daemontools \
__prometheus_alertmanager \
--install-from-backports \
--config "$__manifest/files/alertmanager.yml" \
--storage-path /data/alertmanager \
--listen-address "[::]:$ALERTPORT"
--storage-path /data/alertmanager
SEE ALSO
--------
:strong:`cdist-type__prometheus_server`\ (7), :strong:`cdist-type__daemontools`\ (7),
:strong:`cdist-type__prometheus_server`\ (7), :strong:`cdist-type__grafana_dashboard`\ (7),
Prometheus alerting documentation: https://prometheus.io/docs/alerting/overview/
AUTHORS
@ -61,7 +55,7 @@ Kamila Součková <kamila--@--ksp.sk>
COPYING
-------
Copyright \(C) 2017 Kamila Součková. You can redistribute it
Copyright \(C) 2018 Kamila Součková. You can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

61
cdist/conf/type/__prometheus_alertmanager/manifest
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@ -1,34 +1,63 @@
#!/bin/sh -e
GOBIN=/opt/gocode/bin # where to find go binaries
##### HARD-CODED CONFIG #####################################################
CONF_DIR=/etc/prometheus
LOGLEVEL=info
CONF=$CONF_DIR/alertmanager.yml
### Prometheus server #######################################################
##### GET SETTINGS ##########################################################
config="$(cat "$__object/parameter/config")"
retention_days="$(cat "$__object/parameter/retention-days")"
storage_path="$(cat "$__object/parameter/storage-path")"
listen_address="$(cat "$__object/parameter/listen-address")"
# listen_address="$(cat "$__object/parameter/listen-address")"
FLAGS="config.file '$CONF'
storage.path '$storage_path'
web.listen-address '$listen_address'
log.level $LOGLEVEL"
##### INSTALL THE PACKAGE ###################################################
REAL_FLAGS="$(echo "$FLAGS" | sed -nE 's/^([^#]+).*/ --\1 \\/p')"
require_pkg="" # what to require if I want to require "the package"
if [ -f "$__object/parameter/install-from-backports" ]; then
os=$(cat "$__global/explorer/os")
os_version=$(cat "$__global/explorer/os_version")
__go_get github.com/prometheus/alertmanager/cmd/...
case $os in
devuan)
[ "$os_version" = "ascii/ceres" ] && os_version='ascii' # "ascii" used in the repo URLs
__apt_source backports --uri http://auto.mirror.devuan.org/merged --distribution $os_version-backports --component main
require="$require __apt_source/backports" __package_apt prometheus-alertmanager --target-release $os_version-backports
require_pkg="__package_apt/prometheus-alertmanager"
;;
*)
echo "--install-from-backports is only supported on Devuan -- ignoring." >&2
echo "Send a pull request if you require it." >&2
;;
esac
else
__package prometheus-alertmanager
require_pkg="__package/prometheus-alertmanager"
fi
__user prometheus --system
require="__user/prometheus" __directory "$storage_path" --owner prometheus --parents
require="__user/prometheus" __directory "$CONF_DIR" --owner prometheus --parents
##### PREPARE PATHS AND SUCH ################################################
__daemontools_service alertmanager --run "setuidgid prometheus $GOBIN/alertmanager $REAL_FLAGS"
require="$require $require_pkg" __directory "$storage_path" --owner prometheus --parents
require="$require __directory/$storage_path __user/prometheus" \
# TODO this is a bug in the init script, patching it like this is awful and it should be reported
require="$require $require_pkg" \
__key_value alertmanager_fix_init_script --file /etc/init.d/prometheus-alertmanager \
--key "NAME" --value "prometheus-alertmanager" --delimiter "=" \
--onchange "service prometheus-alertmanager restart"
##### CONFIGURE #############################################################
FLAGS="--storage.path $storage_path --data.retention $(($retention_days*24))h --web.listen-address [::]:9093"
require="$require $require_pkg" \
__key_value alertmanager_args --file /etc/default/prometheus-alertmanager \
--key "ARGS" --value "\"$FLAGS\"" --delimiter "=" \
--onchange "service prometheus-alertmanager restart"
require="$require __directory/$storage_path $require_pkg" \
__config_file $CONF \
--source $config \
--group prometheus --mode 640 \
--onchange "svc -h /service/alertmanager" # TODO when a config-check tool is available, check config here
--onchange "service prometheus-alertmanager reload" # TODO when a config-check tool is available, check config here

1
cdist/conf/type/__prometheus_alertmanager/parameter/boolean Normal file
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@ -0,0 +1 @@
install-from-backports

1
cdist/conf/type/__prometheus_alertmanager/parameter/default/retention-days Normal file
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@ -0,0 +1 @@
90

1
cdist/conf/type/__prometheus_alertmanager/parameter/optional
View file

@ -1 +1,2 @@
storage-path
retention-days

1
cdist/conf/type/__prometheus_alertmanager/parameter/required
View file

@ -1,2 +1 @@
config
listen-address

28
cdist/conf/type/__prometheus_server/man.rst
View file

@ -10,18 +10,12 @@ DESCRIPTION
-----------
Install and configure Prometheus (https://prometheus.io/).
This type creates a daemontools-compatible service directory under /service/prometheus.
Daemontools (or something compatible) must be installed (in particular, the command `svc` must be executable).
Note that due to significant differences between Prometheus 1.x and 2.x, only 2.x is supported. It is your responsibility to make sure that your package manager installs 2.x. (On Devuan Ascii, the parameter `--install-from-backports` helps.)
REQUIRED PARAMETERS
-------------------
config
Prometheus configuration file. It will be saved as /etc/prometheus/prometheus.yml on the target.
listen-address
Passed as web.listen-address.
alertmanager-url
Passed as alertmanager.url
OPTIONAL PARAMETERS
@ -32,13 +26,12 @@ rule-files
Path to rule files. They will be installed under /etc/prometheus/<filename>. You need to include `rule_files: [/etc/prometheus/<your-pattern>]` in the config file if you use this.
storage-path
Where to put data. Default: /data/prometheus. (Directory will be created if needed.)
target-heap-size
Passed as storage.local.target-heap-size. Default: 1/2 of RAM.
BOOLEAN PARAMETERS
------------------
None
install-from-backports
Valid on Devuan only. Will enable the backports apt source and install the package from there. Useful for getting a newer version.
EXAMPLES
@ -49,22 +42,17 @@ EXAMPLES
PROMPORT=9090
ALERTPORT=9093
__daemontools
__golang_from_vendor --version 1.8.1 # required for prometheus and many exporters
require="__daemontools __golang_from_vendor" __prometheus_server \
--with-daemontools \
__prometheus_server \
--install-from-backports \
--config "$__manifest/files/prometheus.yml" \
--retention-days 14 \
--storage-path /data/prometheus \
--listen-address "[::]:$PROMPORT" \
--rule-files "$__manifest/files/*.rules" \
--alertmanager-url "http://monitoring1.node.consul:$ALERTPORT,http://monitoring2.node.consul:$ALERTPORT"
--rule-files "$__manifest/files/*.rules"
SEE ALSO
--------
:strong:`cdist-type__prometheus_alertmanager`\ (7), :strong:`cdist-type__daemontools`\ (7),
:strong:`cdist-type__prometheus_alertmanager`\ (7), :strong:`cdist-type__grafana_dashboard`\ (7),
Prometheus documentation: https://prometheus.io/docs/introduction/overview/
AUTHORS
@ -73,7 +61,7 @@ Kamila Součková <kamila--@--ksp.sk>
COPYING
-------
Copyright \(C) 2017 Kamila Součková. You can redistribute it
Copyright \(C) 2018 Kamila Součková. You can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

62
cdist/conf/type/__prometheus_server/manifest
View file

@ -1,52 +1,70 @@
#!/bin/sh -e
GOBIN=/opt/gocode/bin # where to find go binaries
##### HARD-CODED CONFIG #####################################################
CONF_DIR=/etc/prometheus
CONF=$CONF_DIR/prometheus.yml
LOGLEVEL=info
##### GET SETTINGS ##########################################################
config="$(cat "$__object/parameter/config")"
retention_days="$(cat "$__object/parameter/retention-days")"
storage_path="$(cat "$__object/parameter/storage-path")"
listen_address="$(cat "$__object/parameter/listen-address")"
alertmanager_url="$(cat "$__object/parameter/alertmanager-url")"
target_heap_size="$(cat "$__object/parameter/target-heap-size")"
rule_files="$(cat "$__object/parameter/rule-files")"
# explorer in kB => convert; by default we go with 1/2 RAM
[ "$target_heap_size" = "auto" ] && target_heap_size=$(($(cat $__global/explorer/memory)*1024/2))
##### INSTALL THE PACKAGE ###################################################
FLAGS="config.file '$CONF'
storage.local.path '$storage_path'
storage.local.target-heap-size $(($target_heap_size)) # in bytes; should be 2/3 of available memory because it may be hungry
storage.local.retention $(($retention_days*24))h # golang doesn't have days :D
web.listen-address '$listen_address'
alertmanager.url '$alertmanager_url'
log.level $LOGLEVEL"
require_pkg="" # what to require if I want to require "the package"
if [ -f "$__object/parameter/install-from-backports" ]; then
os=$(cat "$__global/explorer/os")
os_version=$(cat "$__global/explorer/os_version")
REAL_FLAGS="$(echo "$FLAGS" | sed -nE 's/^([^#]+).*/ --\1 \\/p')"
case $os in
devuan)
[ "$os_version" = "ascii/ceres" ] && os_version='ascii' # "ascii" used in the repo URLs
__apt_source backports --uri http://auto.mirror.devuan.org/merged --distribution $os_version-backports --component main
require="$require __apt_source/backports" __package_apt prometheus --target-release $os_version-backports
require_pkg="__package_apt/prometheus"
;;
*)
echo "--install-from-backports is only supported on Devuan -- ignoring." >&2
echo "Send a pull request if you require it." >&2
;;
esac
else
__package prometheus
require_pkg="__package/prometheus"
fi
__go_get github.com/prometheus/prometheus/cmd/...
##### PREPARE PATHS AND SUCH ################################################
__user prometheus --system
require="__user/prometheus" __directory "$storage_path" --owner prometheus --parents
require="__user/prometheus" __directory "$CONF_DIR" --owner prometheus --parents
require="$require $require_pkg" __directory "$storage_path" --owner prometheus --parents
__daemontools_service prometheus --run "setuidgid prometheus $GOBIN/prometheus $REAL_FLAGS"
##### CONFIGURE #############################################################
require="$require __directory/$storage_path __user/prometheus" \
FLAGS="--storage.tsdb.path $storage_path --storage.tsdb.retention $(($retention_days*24))h --web.listen-address [::]:9090"
# TODO it would be neat to restart prometheus on change -- __key_value really should have an --onchange parameter
require="$require $require_pkg" \
__key_value prometheus_args --file /etc/default/prometheus \
--key "ARGS" --value "\"$FLAGS\"" --delimiter "=" \
--onchange "service prometheus restart"
require="$require __directory/$storage_path $require_pkg" \
__config_file $CONF \
--source $config \
--group prometheus --mode 640 \
--onchange "$GOBIN/promtool check-config $CONF && svc -h /service/prometheus"
--onchange "promtool check config $CONF && service prometheus reload"
for file in $rule_files; do
dest=$CONF_DIR/$(basename $file)
require="$require __directory/$CONF_DIR __user/prometheus" \
require="$require $require_pkg" \
__config_file "$dest" \
--source "$file" \
--owner prometheus \
--onchange "$GOBIN/promtool check-rules '$dest' && svc -h /service/prometheus"
--onchange "promtool check rules '$dest' && service prometheus reload"
done

1
cdist/conf/type/__prometheus_server/parameter/boolean Normal file
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@ -0,0 +1 @@
install-from-backports

1
cdist/conf/type/__prometheus_server/parameter/default/target-heap-size
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@ -1 +0,0 @@
auto

1
cdist/conf/type/__prometheus_server/parameter/optional
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@ -1,4 +1,3 @@
target-heap-size
retention-days
rule-files
storage-path

2
cdist/conf/type/__prometheus_server/parameter/required
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@ -1,3 +1 @@
alertmanager-url
config
listen-address