def listClusterInfo(dClusterId=None):
psResult = dockerDriver.ps()
if dClusterId is None:
clusterIds = []
for container in psResult:
clusterName, _ = _parseContainerName(container.name)
if clusterName is not None and clusterName not in clusterIds:
clusterIds.append(clusterName)
print "cluster Ids"
print "\n".join(clusterIds)
return
for container in psResult:
clusterName, _ = _parseContainerName(container.name)
if clusterName == dClusterId:
ip = dockerDriver.getContainerIpAddress(container.name)
print ip
def create(clusterConfigFilePath, overrideClusterId):
'''
return:
{
"dns": "172.17.0.2",
"hosts": "172.17.0.2 master\n172.17.0.3 slave1\n172.17.04 slave2"
}
'''
dnsServerAddress = None
hosts = ""
with open(clusterConfigFilePath, "r") as conffile:
conf = conffile.read()
try:
clusterConfig = json.loads(conf)
except ValueError as e:
print "Given cluster config json file " + clusterConfigFilePath + " is invalid "
print e.message
return 1
# docker build if Dockerfile is specified
clusterConfig = _flattenDockerfile(clusterConfig)
clusterConfig = _flattenHostname(clusterConfig)
if overrideClusterId != None:
clusterConfig["id"] = overrideClusterId
# Append DNS
dnsNode = {
"hostname" : "dclouddns",
"imageName" : REPO_DNS_BASE,
"cmd" : "service sshd start && tail -f /var/log/yum.log"
}
clusterConfig["nodes"].insert(0, dnsNode)
for i in range(len(clusterConfig["nodes"])):
# The first iteration is for DNS
node = clusterConfig["nodes"][i]
container_name = _generateContainerName(clusterConfig["id"], node["hostname"])
cmd = ["docker", "run"
, "-d" # daemon
, "--privileged"]
# DNS
cmd.append("--dns")
if i == 0:
cmd.append("127.0.0.1") # localhost
else:
cmd.append(dnsServerAddress)
if "dns" in clusterConfig:
for dnsIp in clusterConfig["dns"]:
cmd.append("--dns")
cmd.append(dnsIp)
if "domain" in clusterConfig:
cmd.append("--dns-search")
cmd.append(clusterConfig["domain"])
fqdn = node["hostname"] + "." + clusterConfig["domain"]
cmd.append("--name")
#cmd.append(container_name)
cmd.append(fqdn)
cmd.append("-h")
cmd.append(fqdn)
if "volumes" in node:
for volumn in node["volumes"]:
cmd.append("-v")
cmd.append(volumn)
cmd.append(node["imageName"])
cmd.append("bash")
cmd.append("-c")
cmd.append(node["cmd"])
print "executing: " + ' '.join(cmd)
subprocess.call(cmd)
ip = dockerDriver.getContainerIpAddress(container_name)
if i == 0:
dnsServerAddress = ip
hosts += ip + " " + fqdn + " " + node["hostname"] + "\n"
print "dnsServerAddress: " + dnsServerAddress
if(not ssh.connection_check(dnsServerAddress, "root", "changeme")):
print "**** ERROR ****"
print "ssh connection to root@" + dnsServerAddress + " could not be established"
return 1
ssh.exec_command2(dnsServerAddress, "root", "changeme", "echo '" + hosts + "' > /etc/dcloud/dnsmasq/hosts")
ssh.exec_command2(dnsServerAddress, "root", "changeme", "service dnsmasq restart")
print "hosts:"
print hosts
result = RunResult()
result.dns = dnsServerAddress
result.hosts = hosts
return 0
