ypmn / dockerdaemon-certificate Goto Github PK

DOCKER DEAMON ACTIVATION PROCESS :

sudo mkdir -p /etc/systemd/system/docker.service.d

sudo vi /etc/systemd/system/docker.service.d/options.conf

[Service]
ExecStart=
ExecStart=/usr/bin/dockerd -H unix:// -H tcp://0.0.0.0:2375   

sudo systemctl daemon-reload

sudo systemctl restart docker

CERTIFICATES FOR DEAMON SECUITY :


openssl genrsa -aes256 -out ca-key.pem 4096

openssl req -new -x509 -days 365 -key ca-key.pem -sha256 -out ca.pem

openssl genrsa -out server-key.pem 4096

openssl req -subj "/CN=10.1.1.64" -sha256 -new -key server-key.pem -out server.csr

echo subjectAltName = DNS:10.1.1.64,IP:10.1.1.64,IP:127.0.0.1 >> extfile.cnf

echo extendedKeyUsage = serverAuth >> extfile.cnf

openssl x509 -req -days 365 -sha256 -in server.csr -CA ca.pem -CAkey ca-key.pem \
  -CAcreateserial -out server-cert.pem -extfile extfile.cnf


 openssl genrsa -out key.pem 4096 

 openssl req -subj '/CN=client' -new -key key.pem -out client.csr

echo extendedKeyUsage = clientAuth > extfile-client.cnf 

 openssl x509 -req -days 365 -sha256 -in client.csr -CA ca.pem -CAkey ca-key.pem \
  -CAcreateserial -out cert.pem -extfile extfile-client.cnf

rm -v client.csr server.csr extfile.cnf extfile-client.cnf

chmod -v 0400 ca-key.pem key.pem server-key.pem

chmod -v 0444 ca.pem server-cert.pem cert.pem
----------------------------------------------------------------------------------------------------------
# Here we will get almost 6 certificates , below are mapping convention for jenkins configuration we need to follow.

Client Key : key.pem

Client certificate: cert.pem

Server CA certificate : server-cert.pem
----------------------------------------------------------------------------------------------------------
# after certification generation , we need to map this cert in path as below command:

and this [service]-tag commands we need to place in this path sudo vi /etc/systemd/system/docker.service.d/options.conf

[Service]
ExecStart=
ExecStart=/usr/bin/dockerd --tlsverify --tlscacert=/root/ca.pem --tlscert=/root/server-cert.pem --tlskey=/root/server-key.pem \
  -H=0.0.0.0:2376
-----------------------------------------------------------------------------------------------------------
#To Work docker commands we need to use below command to interact with deamon

docker --tlsverify --tlscacert=ca.pem --tlscert=cert.pem --tlskey=key.pem \
  -H=$HOST:2376 version
docker --tlsverify --tlscacert=ca.pem --tlscert=cert.pem --tlskey=key.pem \
  -H=10.1.3.122:2376 ps


 ------------------------------------ Please execute below process for docker ps and docker images --------------------------


If you want to secure your Docker client connections by default, you can move the files to the .docker directory in your home directory --- and set the DOCKER_HOST and DOCKER_TLS_VERIFY variables as well (instead of passing -H=tcp://$HOST:2376 and --tlsverify on every call).

$ mkdir -pv ~/.docker
$ cp -v {ca,cert,key}.pem ~/.docker

$ export DOCKER_HOST=tcp://$HOST:2376 DOCKER_TLS_VERIFY=1
Docker now connects securely by default:

$ docker ps