[O’Reilly Media / Infinite Skills] Introduction to CoreOS Training Video [2015, ENG] : Deploying A DatabaseBacked Web Application : Deploying Web Application
Deploying Web Application
core-01
$ fleetctl list-machines
MACHINE IP METADATA
3408f7ab... 172.17.8.103 -
b2ca4512... 172.17.8.101 -
db577263... 172.17.8.102 -
$ fleetctl list-units
UNIT MACHINE ACTIVE SUB
[email protected] 3408f7ab.../172.17.8.103 active running
[email protected] b2ca4512.../172.17.8.101 active running
[email protected] 3408f7ab.../172.17.8.103 active running
[email protected] b2ca4512.../172.17.8.101 active running
$ etcdctl get /services/rethinkdb/rethinkdb-1
172.17.8.103
$ etcdctl get /services/rethinkdb/rethinkdb-2
172.17.8.101
Я заменил оригинальные image, своими. Они отличаются пока только IP адресом. С оригинальным у меня не заработало.
$ vi [email protected]
[Unit]
Description=ToDo Service
Requires=docker.service
Requires=todo-sk@%i.service
After=docker.service
[Service]
EnvironmentFile=/etc/environment
User=core
Restart=always
TimeoutStartSec=0
ExecStartPre=-/usr/bin/docker kill %p-%i
ExecStartPre=-/usr/bin/docker rm %p-%i
ExecStartPre=/usr/bin/docker pull marley/coreos-todo-angular-express
ExecStart=/usr/bin/docker run --name %p-%i \
-h %H \
-p \${COREOS_PUBLIC_IPV4}:3000:3000 \
-e INSTANCE=%p-%i \
marley/coreos-todo-angular-express
ExecStop=-/usr/bin/docker kill %p-%i
ExecStop=-/usr/bin/docker rm %p-%i
[X-Fleet]
Conflicts=todo@\*.service
$ vi [email protected]
[Unit]
Description=ToDo Sidekick
Requires=todo@%i.service
After=docker.service
After=todo@%i.service
BindsTo=todo@%i.service
[Service]
EnvironmentFile=/etc/environment
User=core
Restart=always
TimeoutStartSec=0
ExecStart=/bin/bash -c '\
while true; do \
port=$(docker inspect --format=\'\' todo-%i); \
curl -sf ${COREOS_PUBLIC_IPV4}:$port/ > /dev/null 2>&1; \
if [ $? -eq 0 ]; then \
etcdctl set /services/todo/todo-%i ${COREOS_PUBLIC_IPV4}:$port --ttl 10; \
else \
etcdctl rm /services/todo/todo-%i; \
fi; \
sleep 5; \
done'
ExecStop=/usr/bin/etcdctl rm /services/todo/todo-%i
[X-Fleet]
MachineOf=todo@%i.service
$ fleetctl submit todo*
$ fleetctl start todo@{1..3} todo-sk@{1..3}
$ fleetctl list-units
UNIT MACHINE ACTIVE SUB
[email protected] 3408f7ab.../172.17.8.103 active running
[email protected] b2ca4512.../172.17.8.101 active running
[email protected] 3408f7ab.../172.17.8.103 active running
[email protected] b2ca4512.../172.17.8.101 active running
[email protected] db577263.../172.17.8.102 active running
[email protected] b2ca4512.../172.17.8.101 active running
[email protected] 3408f7ab.../172.17.8.103 active running
[email protected] db577263.../172.17.8.102 active running
[email protected] b2ca4512.../172.17.8.101 active running
[email protected] 3408f7ab.../172.17.8.103 active running
$ fleetctl journal -f --lines=50 todo@1
$ fleetctl journal -f --lines=50 todo-sk@1
$ etcdctl ls --recursive
/test
/test/hello
/services
/services/rethinkdb
/services/rethinkdb/rethinkdb-1
/services/rethinkdb/rethinkdb-2
/services/todo
/services/todo/todo-2
/services/todo/todo-1
/services/todo/todo-3
/coreos.com
/coreos.com/network
/coreos.com/network/config
/coreos.com/network/subnets
/coreos.com/network/subnets/10.1.99.0-24
/coreos.com/network/subnets/10.1.34.0-24
/coreos.com/network/subnets/10.1.29.0-24
/coreos.com/updateengine
/coreos.com/updateengine/rebootlock
/coreos.com/updateengine/rebootlock/semaphore
/foo
/foo/bar
/foo/bar2
$ etcdctl get /services/todo/todo-3
172.17.8.101:3000
http://172.17.8.101:3000/
http://172.17.8.102:3000/
http://172.17.8.103:3000/
Если нужно все остановить и почистить:
$ fleetctl stop todo@{1..3} todo-sk@{1..3}
$ fleetctl unload todo@{1..3} todo-sk@{1..3}
$ fleetctl destroy [email protected]
$ fleetctl destroy [email protected]
$ fleetctl destroy [email protected]
$ fleetctl destroy [email protected]
$ fleetctl destroy [email protected]
$ fleetctl destroy [email protected]
$ fleetctl destroy [email protected]
$ fleetctl destroy [email protected]