Yuvipanda has uploaded a new change for review.
https://gerrit.wikimedia.org/r/204009
Change subject: tools: Have uwsgi and nodejs attempt to pick a random port
......................................................................
tools: Have uwsgi and nodejs attempt to pick a random port
Instead of always using the uid for port.
Bug: T93046
Change-Id: Ib9395817f431d73820e08b893355327298f6963c
---
M modules/toollabs/files/portgrabber.py
M modules/toollabs/files/tool-nodejs
M modules/toollabs/files/tool-uwsgi-python
3 files changed, 23 insertions(+), 11 deletions(-)
git pull ssh://gerrit.wikimedia.org:29418/operations/puppet
refs/changes/09/204009/1
diff --git a/modules/toollabs/files/portgrabber.py
b/modules/toollabs/files/portgrabber.py
index bc8eb6d..acd8960 100644
--- a/modules/toollabs/files/portgrabber.py
+++ b/modules/toollabs/files/portgrabber.py
@@ -7,16 +7,29 @@
socks = []
-def getProxies():
+def get_proxies():
"""Return the list of proxies to register with."""
with open('/etc/portgrabber.yaml', 'r') as f:
config = yaml.safe_load(f)
return config['proxies']
+def get_open_port():
+ """Tries to get a random open port to listen on
+
+ It does this by starting to listen on a socket, letting the kernel
determine
+ the open port. It then immediately closes it and returns the port.
+ """
+ s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ s.bind(('', 0))
+ port = s.getsockname()[1]
+ s.close()
+ return port
+
+
def register(port):
"""Register with the proxies."""
- for proxy in getProxies():
+ for proxy in get_proxies():
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((proxy, 8282))
sock.sendall(".*\nhttp://%s:%u\n"; % (socket.getfqdn(), port))
diff --git a/modules/toollabs/files/tool-nodejs
b/modules/toollabs/files/tool-nodejs
index aaa8558..46e1b61 100644
--- a/modules/toollabs/files/tool-nodejs
+++ b/modules/toollabs/files/tool-nodejs
@@ -8,19 +8,17 @@
import portgrabber
-pwd_entry = pwd.getpwuid(os.getuid()) # Use uid as reserved port for each tool
-TOOL = re.sub(r'^tools.', '', pwd_entry.pw_name) # Tool users are of form
tools.TOOLNAME
-
-PORT = os.getuid()
+# Attempt to get an open port
+port = portgrabber.get_open_port()
# Connect to the proxylistener instances on the web proxies and notify
# them where requests for the tool need to be routed to.
-portgrabber.register(PORT)
+portgrabber.register(port)
os.chdir(os.path.expanduser('~/www/js'))
# Pass in all of our parent environment too
# npm doesn't like it too much if you give it an almost empty environment
-os.environ['TOOL_WEB_PORT'] = str(PORT)
+os.environ['TOOL_WEB_PORT'] = str(port)
os.execv('/usr/bin/npm', ['/usr/bin/npm', 'start'])
diff --git a/modules/toollabs/files/tool-uwsgi-python
b/modules/toollabs/files/tool-uwsgi-python
index 05561c0..80c92fc 100755
--- a/modules/toollabs/files/tool-uwsgi-python
+++ b/modules/toollabs/files/tool-uwsgi-python
@@ -8,12 +8,13 @@
pwd_entry = pwd.getpwuid(os.getuid()) # Use uid as reserved port for eacht ool
TOOL = re.sub(r'^tools.', '', pwd_entry.pw_name) # Tool users are of form
tools.TOOLNAME
-PORT = os.getuid()
+# Attempt to get an open port
+port = portgrabber.get_open_port()
args = [
'/usr/bin/uwsgi',
'--plugin', 'python',
- '--http-socket', ':' + str(PORT),
+ '--http-socket', ':' + str(port),
'--chdir', os.path.expanduser('~/www/python/src'),
'--logto', os.path.expanduser('~/uwsgi.log'),
'--callable', 'app',
@@ -32,6 +33,6 @@
# Connect to the proxylistener instances on the web proxies and notify
# them where requests for the tool need to be routed to.
-portgrabber.register(PORT)
+portgrabber.register(port)
os.execv('/usr/bin/uwsgi', args)
--
To view, visit https://gerrit.wikimedia.org/r/204009
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ib9395817f431d73820e08b893355327298f6963c
Gerrit-PatchSet: 1
Gerrit-Project: operations/puppet
Gerrit-Branch: production
Gerrit-Owner: Yuvipanda <[email protected]>
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