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Fix errors when overwriting DHCP leases

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Ensure we remove any existing leases for the MAC first, before adding a
new entry for that MAC. Otherwise what dnsmasq returns will not be valid
and this can cause CloudInit bootstrap errors.
This commit is contained in:
Joshua Boniface
2026-03-01 21:10:35 -05:00
parent eff972a62e
commit dfc8d598cb
1 changed files with 19 additions and 15 deletions
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34
node-daemon/pvcnoded/dnsmasq-zookeeper-leases.py
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@@ -130,21 +130,25 @@ def read_lease_database(zk_conn, zk_leases_key):
def add_lease(zk_conn, zk_leases_key, expiry, macaddr, ipaddr, hostname, clientid):
if not hostname:
hostname = ""
transaction = zk_conn.transaction()
transaction.create("{}/{}".format(zk_leases_key, macaddr), "".encode("ascii"))
transaction.create(
"{}/{}/expiry".format(zk_leases_key, macaddr), expiry.encode("ascii")
)
transaction.create(
"{}/{}/ipaddr".format(zk_leases_key, macaddr), ipaddr.encode("ascii")
)
transaction.create(
"{}/{}/hostname".format(zk_leases_key, macaddr), hostname.encode("ascii")
)
transaction.create(
"{}/{}/clientid".format(zk_leases_key, macaddr), clientid.encode("ascii")
)
transaction.commit()
try:
zk_conn.delete("{}/{}".format(zk_leases_key, macaddr), recursive=True)
transaction = zk_conn.transaction()
transaction.create("{}/{}".format(zk_leases_key, macaddr), "".encode("ascii"))
transaction.create(
"{}/{}/expiry".format(zk_leases_key, macaddr), expiry.encode("ascii")
)
transaction.create(
"{}/{}/ipaddr".format(zk_leases_key, macaddr), ipaddr.encode("ascii")
)
transaction.create(
"{}/{}/hostname".format(zk_leases_key, macaddr), hostname.encode("ascii")
)
transaction.create(
"{}/{}/clientid".format(zk_leases_key, macaddr), clientid.encode("ascii")
)
transaction.commit()
except Exception as e:
print(f"FATAL: {e}")
def del_lease(zk_conn, zk_leases_key, macaddr, expiry):