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Add allocated memory for node to ZK 

Adds field for allocated memory in addition to free and used memory

Addresses #9
This commit is contained in:
Joshua Boniface 2018-07-17 21:34:11 -04:00
parent 7f3caa2859
commit 344881ff27
2 changed files with 18 additions and 1 deletions
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1
pvcd.py
View File

@ -200,6 +200,7 @@ else:
transaction.create('/nodes/{}/staticdata'.format(myhostname), ' '.join(staticdata).encode('ascii'))
transaction.create('/nodes/{}/memfree'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/memused'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/memalloc'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/cpuload'.format(myhostname), '0.0'.encode('ascii'))
transaction.create('/nodes/{}/runningdomains'.format(myhostname), ''.encode('ascii'))
transaction.create('/nodes/{}/domainscount'.format(myhostname), '0'.encode('ascii'))

18
pvcd/NodeInstance.py
View File

@ -44,6 +44,7 @@ class NodeInstance():
self.domains_count = 0
self.memused = 0
self.memfree = 0
self.memalloc = 0
self.inflush = False
# Zookeeper handlers for changed states
@ -84,6 +85,13 @@ class NodeInstance():
except AttributeError:
self.memused = 0
@zk_conn.DataWatch('/nodes/{}/memalloc'.format(self.name))
def watch_hypervisor_memalloc(data, stat, event=""):
try:
self.memalloc = data.decode('ascii')
except AttributeError:
self.memalloc = 0
@zk_conn.DataWatch('/nodes/{}/runningdomains'.format(self.name))
def watch_hypervisor_runningdomains(data, stat, event=""):
try:
@ -102,6 +110,9 @@ class NodeInstance():
def getfreemem(self):
return self.memfree
def getallocmem(self):
return self.memalloc
def getcpuload(self):
return self.cpuload
@ -228,9 +239,12 @@ class NodeInstance():
zkhandler.writedata(self.zk_conn, { '/domains/{}/state'.format(domain): instance.getstate() })
# Ensure that any running VMs are readded to the domain_list
memalloc = 0
running_domains = lv_conn.listAllDomains(libvirt.VIR_CONNECT_LIST_DOMAINS_ACTIVE)
for domain in running_domains:
domain_uuid = domain.UUIDString()
# Add the allocated memory to our memalloc value
memalloc += instance.maxMemory()
if domain_uuid not in self.domain_list:
self.domain_list.append(domain_uuid)
@ -238,6 +252,7 @@ class NodeInstance():
self.name = lv_conn.getHostname()
self.memused = int(psutil.virtual_memory().used / 1024 / 1024)
self.memfree = int(psutil.virtual_memory().free / 1024 / 1024)
self.memalloc = memalloc
self.cpuload = os.getloadavg()[0]
self.domains_count = len(lv_conn.listDomainsID())
keepalive_time = int(time.time())
@ -245,6 +260,7 @@ class NodeInstance():
zkhandler.writedata(self.zk_conn, {
'/nodes/{}/memused'.format(self.name): str(self.memused),
'/nodes/{}/memfree'.format(self.name): str(self.memfree),
'/nodes/{}/memalloc'.format(self.name): str(self.memalloc),
'/nodes/{}/cpuload'.format(self.name): str(self.cpuload),
'/nodes/{}/runningdomains'.format(self.name): ' '.join(self.domain_list),
'/nodes/{}/domainscount'.format(self.name): str(self.domains_count),
@ -258,7 +274,7 @@ class NodeInstance():
# Display node information to the terminal
ansiiprint.echo('{}{} keepalive{}'.format(ansiiprint.purple(), self.name, ansiiprint.end()), '', 't')
ansiiprint.echo('{0}Active domains:{1} {2} {0}Free memory [MiB]:{1} {3} {0}Used memory [MiB]:{1} {4} {0}Load:{1} {5}'.format(ansiiprint.bold(), ansiiprint.end(), self.domains_count, self.memfree, self.memused, self.cpuload), '', 'c')
ansiiprint.echo('{0}Active domains:{1} {2} {0}Allocated memory [MiB]:{1} {6} {0}Free memory [MiB]:{1} {3} {0}Used memory [MiB]:{1} {4} {0}Load:{1} {5}'.format(ansiiprint.bold(), ansiiprint.end(), self.domains_count, self.memfree, self.memused, self.cpuload, self.memalloc), '', 'c')
# Update our local node lists
for node_name in self.t_node: