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This commit is contained in:
nemunaire 2018-10-14 22:58:19 +02:00
parent 6184c0bf3d
commit 02db9cc19c
47 changed files with 2658 additions and 213 deletions
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@ -0,0 +1,57 @@
<!DOCTYPE html>
<html lang="en">
<head>
<title>Docker layers</title>
<style>
body { background: white; text-align: center; }
table { width: 100%; }
</style>
</head>
<body>
<h1>Difference image/container</h1>
<table>
<tr>
<td>
<img src="image-layers.jpg" alt="Image layers">
</td>
<td>
<img src="container-layers.jpg" alt="Container layers">
</td>
</tr>
</table>
<hr>
<h1>Block Device <em>Union</em></h1>
<table>
<tr>
<td>
<img src="base_device.jpg" alt="Base device">
</td>
<td>
<img src="two_dm_container.jpg" alt="Base device">
</td>
</tr>
</table>
<hr>
<h1>Filesystem UnionFS</h1>
<table>
<tr>
<td>
<figure>
<img src="aufs_layers.jpg" alt="AUFS layers">
<figcaption>AUFS</figcaption>
</figure>
</td>
<td>
<figure>
<img src="overlay_constructs.jpg" alt="AUFS layers">
<figcaption>OverlayFS</figcaption>
</figure>
</td>
</tr>
</table>
<br>
<p style="text-align: left">
Images from <a href="https://docs.docker.com/">docs.docker.com</a>.
</p>
</body>
</html>

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tutorial/docker-orchestration/machine.md
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@ -56,7 +56,7 @@ leur nom vous permettra par exemple de relancer une machine plus tard) :
<div lang="en-US">
```shell
docker-machine create --driver virtualbox echinoidea
docker-machine create --driver virtualbox echinoidea
```
</div>
@ -82,13 +82,13 @@ changer de daamon/machine avec une simple commande :
<div lang="en-US">
```shell
$ docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS
$ eval $(docker-machine env echinoidea)
$ docker container ls -a
CONTAINER ID IMAGE COMMAND CREATED STATUS
a814293b9f45 armbuild/busybox "/bin/sh" 18 seconds ago Up 10 minutes
0caddeed5037 armbuild/alpine "/bin/sh" 2 weeks ago Created
$ docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS
$ eval $(docker-machine env echinoidea)
$ docker container ls -a
CONTAINER ID IMAGE COMMAND CREATED STATUS
a814293b9f45 armbuild/busybox "/bin/sh" 18 seconds ago Up 10 minutes
0caddeed5037 armbuild/alpine "/bin/sh" 2 weeks ago Created
```
</div>
@ -142,9 +142,9 @@ virtuelle écoute :
<div lang="en-US">
```shell
(virt1) 42sh$ netstat -tpln | grep dockerd
Proto Recv-Q Send-Q Local Address Foreign Address PID/Program name
tcp 0 0 :::2376 :::* 980/dockerd
(virt1) 42sh$ netstat -tpln | grep dockerd
Proto Recv-Q Send-Q Local Address Foreign Address PID/Program name
tcp 0 0 :::2376 :::* 980/dockerd
```
</div>
@ -152,9 +152,9 @@ Essayons de renseigner simplement cette configuration à notre client Docker :
<div lang="en-US">
```shell
(main) 42sh$ docker -H tcp://$VM1_IP:2376/ info
Get http://$VM1_IP:2376/v1.32/info: net/http: HTTP/1.x transport connection broken: malformed HTTP response "\x15\x03\x01\x00\x02\x02".
* Are you trying to connect to a TLS-enabled daemon without TLS?
(main) 42sh$ docker -H tcp://$VM1_IP:2376/ info
Get http://$VM1_IP:2376/v1.32/info: net/http: HTTP/1.x transport connection broken: malformed HTTP response "\x15\x03\x01\x00\x02\x02".
* Are you trying to connect to a TLS-enabled daemon without TLS?
```
</div>
@ -174,11 +174,11 @@ nous n'avons qu'à recopier la clef et les certificats en place.
<div lang="en-US">
```shell
(main) 42sh$ mkdir remote/virt1
(main) 42sh$ scp "docker@$VM1_IP:.docker/*" remote/virt1
ca.pem
cert.pem
key.pem
(main) 42sh$ mkdir remote/virt1
(main) 42sh$ scp "docker@$VM1_IP:.docker/*" remote/virt1
ca.pem
cert.pem
key.pem
```
</div>
@ -186,7 +186,7 @@ Tentons maintenant de nous connecter au daemon distant en utilisant ces élémen
<div lang="en-US">
```shell
42sh$ DOCKER_CERT_PATH=remote/virt1/ docker -H tcp://$VM1_IP:2376/ --tlsverify info
42sh$ DOCKER_CERT_PATH=remote/virt1/ docker -H tcp://$VM1_IP:2376/ --tlsverify info
```
</div>

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@ -0,0 +1,15 @@
FROM debian
ENV CHRONOGRAF_VERSION 1.0.0
RUN apt-get update && apt-get install -y wget && \
apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
wget -q https://dl.influxdata.com/chronograf/releases/chronograf_${CHRONOGRAF_VERSION}_amd64.deb && \
dpkg -i chronograf_${CHRONOGRAF_VERSION}_amd64.deb && \
rm -f chronograf_${CHRONOGRAF_VERSION}_amd64.deb
COPY chronograf.conf /etc/chronograf/chronograf.conf
EXPOSE 10000
VOLUME /var/lib/chronograf
CMD ["/opt/chronograf/chronograf"]

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Bind="0.0.0.0:10000"
LocalDatabase="/var/lib/chronograf/chronograf.db"

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version: '2'
services:
influxdb:
build: influxdb
ports:
- "8083:8083"
- "8086:8086"
volumes:
- influx-data:/var/lib/influxdb
networks:
- influx
chronograf:
build: chronograf
ports:
- "10000:10000"
volumes:
- chronograf-data:/var/lib/chronograf
networks:
- influx
volumes:
influx-data:
driver: local
chronograf-data:
driver: local
networks:
influx:
driver: bridge

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version: '3'
services:
# FRONT
chronograf:
# Full tag list: https://hub.docker.com/r/library/chronograf/tags/
image: chronograf
deploy:
replicas: 3
placement:
constraints:
- node.role == manager
restart_policy:
condition: on-failure
environment:
INFLUXDB_URL: http://influxdb:8086
KAPACITOR_URL: http://kapacitor:9092
volumes:
# Mount for chronograf database
- chronograf-data:/var/lib/chronograf
ports:
# The WebUI for Chronograf is served on port 8888
- "8888:8888"
networks:
- influx
depends_on:
- kapacitor
- influxdb
# MIDDLE
kapacitor:
# Full tag list: https://hub.docker.com/r/library/kapacitor/tags/
image: kapacitor
deploy:
replicas: 1
placement:
constraints:
- node.role == manager
restart_policy:
condition: on-failure
environment:
HOSTNAME: kapacitor
KAPACITOR_INFLUXDB_0_URLS_0: http://influxdb:8086
volumes:
# Mount for kapacitor data directory
- kapacitor-data:/var/lib/kapacitor
# Mount for kapacitor configuration
#- /etc/kapacitor/config:/etc/kapacitor
ports:
# The API for Kapacitor is served on port 9092
- "9092:9092"
networks:
- influx
depends_on:
- influxdb
# BACK
telegraf:
# Full tag list: https://hub.docker.com/r/library/telegraf/tags/
image: telegraf
deploy:
mode: global
restart_policy:
condition: on-failure
volumes:
# Mount for telegraf configuration
- ./telegraf.conf:/etc/telegraf/telegraf.conf
# Mount for Docker API access
- /var/run/docker.sock:/var/run/docker.sock
networks:
- influx
depends_on:
- influxdb
# DATABASE
influxdb:
# Full tag list: https://hub.docker.com/r/library/influxdb/tags/
image: influxdb
deploy:
replicas: 1
placement:
constraints:
- node.role == manager
restart_policy:
condition: on-failure
volumes:
# Mount for influxdb data directory
- influxdb-data:/var/lib/influxdb
# Mount for influxdb configuration
#- /etc/influxdb/config:/etc/influxdb
ports:
# The API for InfluxDB is served on port 8086
- "8086:8086"
networks:
- influx
networks:
influx:
volumes:
chronograf-data:
kapacitor-data:
influxdb-data:

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version: '3'
services:
influxdb:
image: influxdb
ports:
- "8083:8083"
- "8086:8086"
volumes:
- influx-data:/var/lib/influxdb
networks:
- influx
chronograf:
image: chronograf
ports:
- "8888:8888"
environment:
INFLUXDB_URL: http://influxdb:8086
KAPACITOR_URL: http://kapacitor:9092
volumes:
- chronograf-data:/var/lib/chronograf
networks:
- influx
depends_on:
- influxdb
volumes:
influx-data:
driver: local
chronograf-data:
driver: local
networks:
influx:

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FROM debian
ENV INFLUXDB_VERSION 1.0.0
RUN apt-get update && apt-get install -y wget && \
apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
wget -q https://dl.influxdata.com/influxdb/releases/influxdb_${INFLUXDB_VERSION}_amd64.deb && \
dpkg -i influxdb_${INFLUXDB_VERSION}_amd64.deb && \
rm -f influxdb_${INFLUXDB_VERSION}_amd64.deb
COPY influxdb.conf /etc/influxdb/influxdb.conf
EXPOSE 8083 8086
VOLUME /var/lib/influxdb
CMD ["influxd"]

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[meta]
dir = "/var/lib/influxdb/meta"
[data]
dir = "/var/lib/influxdb/data"
engine = "tsm1"
wal-dir = "/var/lib/influxdb/wal"
[admin]
enabled = true

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@ -0,0 +1,22 @@
FROM debian
ENV INFLUXDB_VERSION 1.0.0
ENV CHRONOGRAF_VERSION 1.0.0
RUN apt-get update && apt-get install -y wget supervisor && \
apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
wget -q https://dl.influxdata.com/influxdb/releases/influxdb_${INFLUXDB_VERSION}_amd64.deb && \
wget -q https://dl.influxdata.com/chronograf/releases/chronograf_${CHRONOGRAF_VERSION}_amd64.deb && \
dpkg -i influxdb_${INFLUXDB_VERSION}_amd64.deb chronograf_${CHRONOGRAF_VERSION}_amd64.deb && \
rm -f influxdb_${INFLUXDB_VERSION}_amd64.deb chronograf_${CHRONOGRAF_VERSION}_amd64.deb
EXPOSE 8083 8086 10000
VOLUME /var/lib/influxdb
VOLUME /var/lib/chronograf
COPY influxdb.conf /etc/influxdb/influxdb.conf
COPY chronograf.conf /etc/chronograf/chronograf.conf
COPY supervisor.conf /etc/supervisor/conf.d/supervisord.conf
CMD ["/usr/bin/supervisord"]

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Bind="0.0.0.0:10000"
LocalDatabase="/var/lib/chronograf/chronograf.db"

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@ -0,0 +1,10 @@
[meta]
dir = "/var/lib/influxdb/meta"
[data]
dir = "/var/lib/influxdb/data"
engine = "tsm1"
wal-dir = "/var/lib/influxdb/wal"
[admin]
enabled = true

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@ -0,0 +1,8 @@
[supervisord]
nodaemon=true
[program:influxdb]
command=/usr/bin/influxd
[program:chronograf]
command=/opt/chronograf/chronograf

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@ -0,0 +1,23 @@
FROM debian
ENV INFLUXDB_VERSION 1.0.0
ENV CHRONOGRAF_VERSION 1.0.0
RUN apt-get update && apt-get install -y wget && \
apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
wget -q https://dl.influxdata.com/influxdb/releases/influxdb_${INFLUXDB_VERSION}_amd64.deb && \
wget -q https://dl.influxdata.com/chronograf/releases/chronograf_${CHRONOGRAF_VERSION}_amd64.deb && \
dpkg -i influxdb_${INFLUXDB_VERSION}_amd64.deb chronograf_${CHRONOGRAF_VERSION}_amd64.deb && \
rm -f influxdb_${INFLUXDB_VERSION}_amd64.deb chronograf_${CHRONOGRAF_VERSION}_amd64.deb
EXPOSE 8083 8086 10000
VOLUME /var/lib/influxdb
VOLUME /var/lib/chronograf
COPY influxdb.conf /etc/influxdb/influxdb.conf
COPY chronograf.conf /etc/chronograf/chronograf.conf
# start.sh should already be executable
COPY start.sh /usr/bin/start.sh
CMD ["start.sh"]

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@ -0,0 +1,2 @@
Bind="0.0.0.0:10000"
LocalDatabase="/var/lib/chronograf/chronograf.db"

10
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@ -0,0 +1,10 @@
[meta]
dir = "/var/lib/influxdb/meta"
[data]
dir = "/var/lib/influxdb/data"
engine = "tsm1"
wal-dir = "/var/lib/influxdb/wal"
[admin]
enabled = true

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@ -0,0 +1,9 @@
#!/bin/sh
influxd &
WAIT=$!
/opt/chronograf/chronograf &
WAIT="${WAIT} $!"
wait ${WAIT}

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@ -0,0 +1,24 @@
version: '2'
services:
nginx:
image: nginx
ports:
- "80:8080"
networks:
- ha
mysql:
image: mysql
volumes:
- mysql-data:/var/lib/mysql
networks:
- ha
volumes:
mysql-data:
driver: local
networks:
ha:
driver: bridge

3
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@ -0,0 +1,3 @@
[[outputs.influxdb]]
urls = ["http://influxdb:8086"] # required
database = "telegraf" # required

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/var/log/telegraf/telegraf.log
{
rotate 6
daily
missingok
dateext
copytruncate
notifempty
compress
}

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#! /usr/bin/env bash
# chkconfig: 2345 99 01
# description: Telegraf daemon
### BEGIN INIT INFO
# Provides: telegraf
# Required-Start: $all
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start telegraf at boot time
### END INIT INFO
# this init script supports three different variations:
# 1. New lsb that define start-stop-daemon
# 2. Old lsb that don't have start-stop-daemon but define, log, pidofproc and killproc
# 3. Centos installations without lsb-core installed
#
# In the third case we have to define our own functions which are very dumb
# and expect the args to be positioned correctly.
# Command-line options that can be set in /etc/default/telegraf. These will override
# any config file values.
TELEGRAF_OPTS=
USER=telegraf
GROUP=telegraf
if [ -r /lib/lsb/init-functions ]; then
source /lib/lsb/init-functions
fi
DEFAULT=/etc/default/telegraf
if [ -r $DEFAULT ]; then
source $DEFAULT
fi
if [ -z "$STDOUT" ]; then
STDOUT=/dev/null
fi
if [ ! -f "$STDOUT" ]; then
mkdir -p `dirname $STDOUT`
fi
if [ -z "$STDERR" ]; then
STDERR=/var/log/telegraf/telegraf.log
fi
if [ ! -f "$STDERR" ]; then
mkdir -p `dirname $STDERR`
fi
OPEN_FILE_LIMIT=65536
function pidofproc() {
if [ $# -ne 3 ]; then
echo "Expected three arguments, e.g. $0 -p pidfile daemon-name"
fi
if [ ! -f "$2" ]; then
return 1
fi
local pidfile=`cat $2`
if [ "x$pidfile" == "x" ]; then
return 1
fi
if ps --pid "$pidfile" | grep -q $(basename $3); then
return 0
fi
return 1
}
function killproc() {
if [ $# -ne 3 ]; then
echo "Expected three arguments, e.g. $0 -p pidfile signal"
fi
pid=`cat $2`
kill -s $3 $pid
}
function log_failure_msg() {
echo "$@" "[ FAILED ]"
}
function log_success_msg() {
echo "$@" "[ OK ]"
}
# Process name ( For display )
name=telegraf
# Daemon name, where is the actual executable
daemon=/usr/bin/telegraf
# pid file for the daemon
pidfile=/var/run/telegraf/telegraf.pid
piddir=`dirname $pidfile`
if [ ! -d "$piddir" ]; then
mkdir -p $piddir
chown $USER:$GROUP $piddir
fi
# Configuration file
config=/etc/telegraf/telegraf.conf
confdir=/etc/telegraf/telegraf.d
# If the daemon is not there, then exit.
[ -x $daemon ] || exit 5
case $1 in
start)
# Checked the PID file exists and check the actual status of process
if [ -e $pidfile ]; then
pidofproc -p $pidfile $daemon > /dev/null 2>&1 && status="0" || status="$?"
# If the status is SUCCESS then don't need to start again.
if [ "x$status" = "x0" ]; then
log_failure_msg "$name process is running"
exit 0 # Exit
fi
fi
# Bump the file limits, before launching the daemon. These will carry over to
# launched processes.
ulimit -n $OPEN_FILE_LIMIT
if [ $? -ne 0 ]; then
log_failure_msg "set open file limit to $OPEN_FILE_LIMIT"
fi
log_success_msg "Starting the process" "$name"
if which start-stop-daemon > /dev/null 2>&1; then
start-stop-daemon --chuid $USER:$GROUP --start --quiet --pidfile $pidfile --exec $daemon -- -pidfile $pidfile -config $config -config-directory $confdir $TELEGRAF_OPTS >>$STDOUT 2>>$STDERR &
else
su -s /bin/sh -c "nohup $daemon -pidfile $pidfile -config $config -config-directory $confdir $TELEGRAF_OPTS >>$STDOUT 2>>$STDERR &" $USER
fi
log_success_msg "$name process was started"
;;
stop)
# Stop the daemon.
if [ -e $pidfile ]; then
pidofproc -p $pidfile $daemon > /dev/null 2>&1 && status="0" || status="$?"
if [ "$status" = 0 ]; then
if killproc -p $pidfile SIGTERM && /bin/rm -rf $pidfile; then
log_success_msg "$name process was stopped"
else
log_failure_msg "$name failed to stop service"
fi
fi
else
log_failure_msg "$name process is not running"
fi
;;
reload)
# Reload the daemon.
if [ -e $pidfile ]; then
pidofproc -p $pidfile $daemon > /dev/null 2>&1 && status="0" || status="$?"
if [ "$status" = 0 ]; then
if killproc -p $pidfile SIGHUP; then
log_success_msg "$name process was reloaded"
else
log_failure_msg "$name failed to reload service"
fi
fi
else
log_failure_msg "$name process is not running"
fi
;;
restart)
# Restart the daemon.
$0 stop && sleep 2 && $0 start
;;
status)
# Check the status of the process.
if [ -e $pidfile ]; then
if pidofproc -p $pidfile $daemon > /dev/null; then
log_success_msg "$name Process is running"
exit 0
else
log_failure_msg "$name Process is not running"
exit 1
fi
else
log_failure_msg "$name Process is not running"
exit 3
fi
;;
version)
$daemon version
;;
*)
# For invalid arguments, print the usage message.
echo "Usage: $0 {start|stop|restart|status|version}"
exit 2
;;
esac

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@ -0,0 +1,17 @@
[Unit]
Description=The plugin-driven server agent for reporting metrics into InfluxDB
Documentation=https://github.com/influxdata/telegraf
After=network.target
[Service]
EnvironmentFile=-/etc/default/telegraf
User=telegraf
Environment='STDOUT=/var/log/telegraf/telegraf.log'
Environment='STDERR=/var/log/telegraf/telegraf.log'
ExecStart=/bin/sh -c "exec /usr/bin/telegraf -config /etc/telegraf/telegraf.conf -config-directory /etc/telegraf/telegraf.d ${TELEGRAF_OPTS} >>${STDOUT} 2>>${STDERR}"
ExecReload=/bin/kill -HUP $MAINPID
Restart=on-failure
KillMode=control-group
[Install]
WantedBy=multi-user.target

50
tutorial/docker-orchestration/stack.md
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@ -27,14 +27,14 @@ un serveur web, qui sera bien plus représentatif de ce que l'on pourra obtenir.
Précédemment, nous lancions notre serveur web favori avec :
```shell
docker container run --name mywebs -d nginx
docker container run --name mywebs -d nginx
```
La même commande, mais déployée à partir d'un nœud manager, vers un nœud
*workers*, est :
```shell
docker service create --name myWebS nginx
docker service create --name myWebS nginx
```
Allons-y, essayons !
@ -42,9 +42,9 @@ Allons-y, essayons !
On peut consulter l'état du service avec, comme d'habitude `ls` :
```shell
42sh$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
iyue3rgd0ohs myWebS replicated 1/1 nginx:latest
42sh$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
iyue3rgd0ohs myWebS replicated 1/1 nginx:latest
```
Vous pouvez constater que sur l'un des nœuds, sur lequel votre serveur aura été
@ -56,7 +56,7 @@ Rien de très excitant pour le moment, car nous ne pouvons pas vraiment accéder
d'ajouter une redirection de port :
```shell
docker service update --publish-add 80 myWebS
docker service update --publish-add 80 myWebS
```
À chaque modification de configuration, les conteneurs lancés au sein du
@ -101,13 +101,13 @@ Ce qui se fait souvent avec beaucoup de douleur hors de Docker, se résume ici
:
```shell
docker service update --replicas 3 myWebS
docker service update --replicas 3 myWebS
```
Roulement de tambours .......
```shell
docker service ps myWebS
docker service ps myWebS
```
nous montre bien, a priori 3 tâches en cours d'exécution pour ce service !
@ -127,7 +127,7 @@ Notre système de monitoring est une *stack* lui aussi, d'ailleurs, nous pouvons
la lancer grâce à notre `docker-compose.yml` :
```shell
docker stack deploy --compose-file docker-compose.yml tic
docker stack deploy --compose-file docker-compose.yml tic
```
### Règle de déploiement
@ -136,23 +136,23 @@ Par rapport à `docker-compose`, nous pouvons indiquer dans ce fichier des
paramètres qui ne serviront qu'au déploiement de notre tâche.
```yaml
version: '3'
services:
redis:
image: redis:alpine
version: '3'
services:
redis:
image: redis:alpine
deploy:
replicas: 6
update_config:
parallelism: 2
delay: 10s
restart_policy:
condition: on-failure
placement:
constraints:
- node.role == manager
resources:
memory: 50M
deploy:
replicas: 6
update_config:
parallelism: 2
delay: 10s
restart_policy:
condition: on-failure
placement:
constraints:
- node.role == manager
resources:
memory: 50M
```
Certaines informations comme les ressources, permettent à l'orchestrateur de

18
tutorial/docker-orchestration/swarm.md
View file

@ -78,7 +78,7 @@ ce n'est pas plus compliqué que de faire :
<div lang="en-US">
```shell
docker swarm init
docker swarm init
```
</div>
@ -99,7 +99,7 @@ commande, vous pouvez retrouver le jeton avec :
<div lang="en-US">
```shell
docker swarm join-token worker
docker swarm join-token worker
```
</div>
@ -120,8 +120,8 @@ utilisant `docker-machine`.
<div lang="en-US">
```shell
eval $(docker-machine env echinoidea)
docker swarm join --token SWMTKN-1-...-... 10.10.10.42:2377
eval $(docker-machine env echinoidea)
docker swarm join --token SWMTKN-1-...-... 10.10.10.42:2377
```
</div>
@ -129,11 +129,11 @@ Une fois rejoint, vous devriez voir apparaître un nouveau nœud *worker* dans :
<div lang="en-US">
```shell
42sh$ eval $(docker-machine env -u)
42sh$ docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
y9skzvuf989hjrkciu8mnsy echinoidea Ready Active
ovgh6r32kgcbswb2we48br1 * wales Ready Active Leader
42sh$ eval $(docker-machine env -u)
42sh$ docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
y9skzvuf989hjrkciu8mnsy echinoidea Ready Active
ovgh6r32kgcbswb2we48br1 * wales Ready Active Leader
```
</div>