Lagom production deployment
tutorial：https://developer.lightbend.com/guides/lagom-kubernetes-k8s-deploy-microservices/
一、harbor deployment:
https://blog.frognew.com/2017/06/install-harbor.html
#harbor compose
wget https://github.com/vmware/harbor/releases/download/v1.1.2/harbor-offline-installer-v1.1.2.tgz tar -zxvf harbor-offline-installer-v1.1.2.tgz cd harbor/ ls common docker-compose.notary.yml docker-compose.yml harbor_1_1_0_template harbor.cfg harbor.v1.1.2.tar.gz install.sh LICENSE NOTICE prepare upgrade
修改harbor.cfg：
#或者指定域名 如 hostname = harbor.myCompany.com hostname = 192.168.61.11
二、harbor deployment
# habor wget https://github.com/vmware/harbor/releases/download/v1.1.2/harbor-offline-installer-v1.1.2.tgz tar -zxvf harbor-offline-installer-v1.1.2.tgz cd harbor vi harbor.cfg # change the domain name, https, password, # default user name: admin
hostname = harbor.xx.xxx.com
harbor_admin_password = Xxxxxxx
三、https deployment
# https(input the domain name and ip) cd https
# 这是一个自动生成证书的工具 ./lc-tlscert mkdir -p /data/cert/ cp server.* /data/cert/ ./install.sh
四、client
##### # client ##### vi /etc/hosts # add 10.0.0.xxx harbor.xx.xxx.com # docker client import *.crt mkdir -p /usr/share/ca-certificates/extra scp root@10.0.0.xxx:/root/harbor/https/server.crt /usr/share/ca-certificates/extra/ dpkg-reconfigure ca-certificates systemctl restart docker
# before push
docker login -u admin -p xxxxx harbor.xx.xxx.com
在客户端将harbor的hostname添加到 /etc/hosts中，在本地创建文件夹，拷贝证书， depackage， 然后重启本地docker -》 登陆docker
# change image pull policy
Always
五、在本地将工程publish到harbor
sbt -DbuildTarget=kubernetes clean docker:publish
build.sbt中需要修改
lazy val friendImpl = project("friend-impl")
.enablePlugins(LagomJava)
.settings(
version := buildVersion,
version in Docker := buildVersion,
dockerBaseImage := "openjdk:8-jre-alpine",
dockerRepository := Some(BuildTarget.dockerRepository),
dockerUpdateLatest := true,
dockerEntrypoint ++= """-Dhttp.address="$(eval "echo $FRIENDSERVICE_BIND_IP")" -Dhttp.port="$(eval "echo $FRIENDSERVICE_BIND_PORT")" -Dakka.remote.netty.tcp.hostname="$(eval "echo $AKKA_REMOTING_HOST")" -Dakka.remote.netty.tcp.bind-hostname="$(eval "echo $AKKA_REMOTING_BIND_HOST")" -Dakka.remote.netty.tcp.port="$(eval "echo $AKKA_REMOTING_PORT")" -Dakka.remote.netty.tcp.bind-port="$(eval "echo $AKKA_REMOTING_BIND_PORT")" $(IFS=','; I=0; for NODE in $AKKA_SEED_NODES; do echo "-Dakka.cluster.seed-nodes.$I=akka.tcp://friendservice@$NODE"; I=$(expr $I + 1); done)""".split(" ").toSeq,
dockerCommands :=
dockerCommands.value.flatMap {
case ExecCmd("ENTRYPOINT", args @ _*) => Seq(Cmd("ENTRYPOINT", args.mkString(" ")))
case c @ Cmd("FROM", _) => Seq(c, ExecCmd("RUN", "/bin/sh", "-c", "apk add --no-cache bash && ln -sf /bin/bash /bin/sh"))
case v => Seq(v)
},
resolvers += bintrayRepo("hajile", "maven"),
resolvers += bintrayRepo("hseeberger", "maven"),
libraryDependencies ++= Seq(
lagomJavadslPersistenceCassandra,
lagomJavadslTestKit
)
)
.settings(BuildTarget.additionalSettings)
.settings(lagomForkedTest
dockerRepository的值设置成publishTo的目标，比如： harbor.xx.xxx.com/chirper
六、kubenets拉取image
注意：上述在master节点做的CA工作，在slave节点上也要做，另外slave节点上也需要做hosts的配置
edit /etc/hosts
cd lagom-java-chirper-example/deploy/kubernetes/resources/chirper kubectl create -f friend-impl-service.json kubectl create -f friend-impl-statefulset.json
如果出现
vim /etc/hosts 10.0.0.xxx（harbor） harbor vim /etc/resolv.conf 114.114.114.114 （修改至harbor的url）
七、kubenetes deployment：
ref: https://blog.frognew.com/2017/09/kubeadm-install-kubernetes-1.8.html
# 0. Verify the mac address and product_uuid
ifconfig -a
cat /sys/class/dmi/id/product_uuid
# 1. Turn off swap
swapoff -a
vi /etc/fstab
vi /etc/hosts
10.0.0.56 master.dev.xx.xxx.com
10.0.0.51 slave01.dev.xx.xxx.com
10.0.0.52 slave02.dev.xx.xxx.com
10.0.0.53 slave03.dev.xx.xxx.com
#swap line
# 2. Docker
apt install -y docker.io
cat << EOF > /etc/docker/daemon.json
{
"exec-opts": ["native.cgroupdriver=cgroupfs"]
}
EOF
? service docker restart
# 3. Kubeadm, Kubectl, Kubelet
apt update && apt install -y apt-transport-https
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb http://apt.kubernetes.io/ kubernetes-xenial main
EOF
apt update
apt install -y kubelet kubeadm kubectl
# 4. Init. Take the token!!!
vi ~/.profile
export KUBECONFIG=/etc/kubernetes/admin.conf
./init.sh
# 5. Flannel
# copy portmap to master and all slaves
cp flannel/portmap /opt/cni/bin
kubectl apply -f flannel/kube-flannel.yml
# 6. Dashboard
kubectl create -f dashboard/kubernetes-dashboard.yaml
kubectl create -f dashboard/kubernetes-dashboard-admin.rbac.yaml
kubectl create -f dashboard/grafana.yaml
kubectl create -f dashboard/influxdb.yaml
kubectl create -f dashboard/heapster.yaml
kubectl create -f dashboard/heapster-rbac.yaml
#7.
kubectl get pod --all-namespaces -o wide
找出dashboard 的ip
如：
kube-system kubernetes-dashboard-7486b894c6-4rhfn 1/1 Running 0 1h 10.244.0.3 k8s-dev-master
./rinetd -c 10.0.0.56 8443 (target ip) 10.244.0.3 8443 (dashboard ip)
如果：rinetd: couldn't bind to address
关闭rinetd重新run即可
pkill rinetd
集群清理，不管master还是slave 都是：
kubeadm reset
ifconfig cni0 down
ip link delete cni0
ifconfig flannel.1 down
ip link delete flannel.1
rm -rf /var/lib/cni/
查看kubernete-dashboard-admin的token:
根据第一句命令查看token，把token写入第二句
kubectl -n kube-system get secret | grep kubernetes-dashboard-admin
kubernetes-dashboard-admin-token-pfss5 kubernetes.io/service-account-token 3 14s
kubectl describe -n kube-system secret/kubernetes-dashboard-admin-token-pfss5
八、deploy chirper-ingress
kubectl create -f /deploy/kubernetes/resources/nginx/chirper-ingress.json
九、set up static cassandra
在impl的application.conf中加入
cassandra.default {
## list the contact points here
contact-points = ["10.0.0.58", "23.51.143.11"]
## override Lagom’s ServiceLocator-based ConfigSessionProvider
session-provider = akka.persistence.cassandra.ConfigSessionProvider
}
cassandra-journal {
contact-points = ${cassandra.default.contact-points}
session-provider = ${cassandra.default.session-provider}
}
cassandra-snapshot-store {
contact-points = ${cassandra.default.contact-points}
session-provider = ${cassandra.default.session-provider}
}
lagom.persistence.read-side.cassandra {
contact-points = ${cassandra.default.contact-points}
session-provider = ${cassandra.default.session-provider}
}
十、部署自己的scala application时，发现一直会抛一个异常说是一个名为“application”的akka-remote-actor无法定位，发现通过play.akka.actor-system配置的name被篡改成application，
发现因为ConductR是收费的，而我们使用了DnsServiceLocator,所以Loader中需要把extends ConductR改成extends DnsServiceLocator，这样actor-system就可以正常配置了。
ref：https://index.scala-lang.org/lightbend/service-locator-dns/lagom-service-locator-dns/1.0.2?target=_2.11
十一、kafka配置问题。
在配置外部静态kafka时，会遇到下面这个问题。
[error] com.lightbend.lagom.internal.broker.kafka.KafkaSubscriberActor [sourceThread=myservice-akka.actor.default-dispatcher-19, akkaTimestamp=07:51:51.537UTC, akkaSource=akka.tcp://myservice@myservice-0.myservice.default.svc.cluster.local:2551/user/KafkaBackoffConsumer1-myEvents/KafkaConsumerActor1-myEvents, sourceActorSystem=myservice] - Unable to locate Kafka service named [myservice]
这个问题解决的方法是，我们不仅要在build.sbt中配置
lagomKafkaEnabled in ThisBuild := false lagomKafkaAddress in ThisBuild := "10.0.0.xx:9092"
还要在serviceImpl的applicaton.conf中配置,首先要把service-name置空，brokers=ip:port,其他和Lagom官网上Kafka client配置一样。
lagom.broker.kafka { # The name of the Kafka service to look up out of the service locator. # If this is an empty string, then a service locator lookup will not be done, # and the brokers configuration will be used instead. service-name = "" # The URLs of the Kafka brokers. Separate each URL with a comma. # This will be ignored if the service-name configuration is non empty. brokers = "10.0.0.58:9092" }
如果kafka抛出WakeupException，Consumer actor terminated，详情见：https://github.com/lagom/lagom/issues/705，需要修改kafka server.properties中的
advertised.listeners=PLAINTEXT://your IP:9092
十二、k8s健康检查探针的问题
k8s部署之后，通过kube get pods发现我们刚deploy的服务状态是Running，但是容器状态Ready是false，通过kubectl describe pod servicename，发现
readiness probe failed: Get http://10.108.88.40:8080/healthz: dial tcp 10.108.88.40:8080: getsockopt: connection refused
这里是因为我们URL错误。
Lagom需要我们在使用circuit-breaker来配置这个URL。
application.conf lagom.circuit-breaker { # Default configuration that is used if a configuration section # with the circuit breaker identifier is not defined. default { # Possibility to disable a given circuit breaker. enabled = on # Number of failures before opening the circuit. max-failures = 10 # Duration of time after which to consider a call a failure. call-timeout = 10s # Duration of time in open state after which to attempt to close # the circuit, by first entering the half-open state. reset-timeout = 15s } }
在scala版本的serviceApplication中，
lazy val lagomServer = LagomServer.forServices(
bindService[YourService].to(wire[YourImpl]),
metricsServiceBinding
)
加入metricsServiceBinding，这里就可以解决这个问题。
十三、traefik会把k8s对外的ip设置成80.
harbor：https://www.jianshu.com/p/2ebadd9a323d
docker-compose.yml主要修改registry容器参数，在network下增加如下图中框内的内容：
4、harbor.cfg只需要修改hostname为你自己的机器IP或者域名，harbor默认的db连接密码为root123，可以自己修改，也可以保持默认，harbor初始管理员密码为Harbor12345，可以根据自己需要进行修改，email选项是用来忘记密码重置用的，根据实际情况修改，如果使用163或者qq邮箱等，需要使用授权码进行登录，此时就不能使用密码登录了，会无效的（qq使用授权码登录第三方邮箱客户端自行百度
5.访问harbor， 登陆之后的页面：
