|
| 1 | +#!/usr/bin/env python3 |
| 2 | + |
| 3 | +import datetime |
| 4 | +import logging |
| 5 | +import os |
| 6 | +import re |
| 7 | +import signal |
| 8 | +import sys |
| 9 | +import time |
| 10 | + |
| 11 | +import vrnetlab |
| 12 | + |
| 13 | +STARTUP_CONFIG_FILE = "/config/startup-config.cfg" |
| 14 | + |
| 15 | +def handle_SIGCHLD(signal, frame): |
| 16 | + os.waitpid(-1, os.WNOHANG) |
| 17 | + |
| 18 | + |
| 19 | +def handle_SIGTERM(signal, frame): |
| 20 | + sys.exit(0) |
| 21 | + |
| 22 | + |
| 23 | +signal.signal(signal.SIGINT, handle_SIGTERM) |
| 24 | +signal.signal(signal.SIGTERM, handle_SIGTERM) |
| 25 | +signal.signal(signal.SIGCHLD, handle_SIGCHLD) |
| 26 | + |
| 27 | +TRACE_LEVEL_NUM = 9 |
| 28 | +logging.addLevelName(TRACE_LEVEL_NUM, "TRACE") |
| 29 | + |
| 30 | + |
| 31 | +def trace(self, message, *args, **kws): |
| 32 | + # Yes, logger takes its '*args' as 'args'. |
| 33 | + if self.isEnabledFor(TRACE_LEVEL_NUM): |
| 34 | + self._log(TRACE_LEVEL_NUM, message, args, **kws) |
| 35 | + |
| 36 | + |
| 37 | +logging.Logger.trace = trace |
| 38 | + |
| 39 | + |
| 40 | +class AOSCX_vm(vrnetlab.VM): |
| 41 | + def __init__(self, hostname, username, password, conn_mode): |
| 42 | + disk_image = "" |
| 43 | + for e in os.listdir("/"): |
| 44 | + if re.search(".vmdk$", e): |
| 45 | + disk_image = "/" + e |
| 46 | + if disk_image == "": |
| 47 | + logging.getLogger().info("Disk image was not found") |
| 48 | + exit(1) |
| 49 | + super(AOSCX_vm, self).__init__( |
| 50 | + username, password, disk_image=disk_image, ram=4096 |
| 51 | + ) |
| 52 | + self.hostname = hostname |
| 53 | + self.conn_mode = conn_mode |
| 54 | + self.num_nics = 20 |
| 55 | + self.nic_type = "virtio-net-pci" |
| 56 | + self.qemu_args.extend(["-cpu", "host,level=9"]) |
| 57 | + self.qemu_args.extend(["-smp", "2"]) |
| 58 | + |
| 59 | + def bootstrap_spin(self): |
| 60 | + """This function should be called periodically to do work.""" |
| 61 | + |
| 62 | + if self.spins > 300: |
| 63 | + # too many spins with no result -> give up |
| 64 | + self.logger.info("To many spins with no result, restarting") |
| 65 | + self.stop() |
| 66 | + self.start() |
| 67 | + return |
| 68 | + |
| 69 | + (ridx, match, res) = self.tn.expect([b"switch login:"], 1) |
| 70 | + if match: # got a match! |
| 71 | + if ridx == 0: # login |
| 72 | + self.logger.debug("trying to log in with 'admin'") |
| 73 | + self.wait_write("\r", wait=None) |
| 74 | + self.logger.debug("sent newline") |
| 75 | + self.wait_write("admin", wait="switch login:") |
| 76 | + self.logger.debug("sent username") |
| 77 | + self.wait_write("\r", wait="Password:") |
| 78 | + self.logger.debug("sent empty password") |
| 79 | + self.logger.debug("resetting password") |
| 80 | + self.wait_write("admin", wait="Enter new password:") |
| 81 | + self.wait_write("admin", wait="Confirm new password:") |
| 82 | + |
| 83 | + # run main config! |
| 84 | + self.bootstrap_config() |
| 85 | + self.startup_config() |
| 86 | + # close telnet connection |
| 87 | + self.tn.close() |
| 88 | + # startup time? |
| 89 | + startup_time = datetime.datetime.now() - self.start_time |
| 90 | + self.logger.info("Startup complete in: %s" % startup_time) |
| 91 | + # mark as running |
| 92 | + self.running = True |
| 93 | + return |
| 94 | + |
| 95 | + # no match, if we saw some output from the router it's probably |
| 96 | + # booting, so let's give it some more time |
| 97 | + if res != b"": |
| 98 | + self.logger.trace("OUTPUT: %s" % res.decode()) |
| 99 | + # reset spins if we saw some output |
| 100 | + self.spins = 0 |
| 101 | + |
| 102 | + self.spins += 1 |
| 103 | + |
| 104 | + return |
| 105 | + |
| 106 | + def bootstrap_config(self): |
| 107 | + """Do the actual bootstrap config""" |
| 108 | + self.logger.info("applying bootstrap configuration") |
| 109 | + self.wait_write("", None) |
| 110 | + self.wait_write("configure") |
| 111 | + self.wait_write( |
| 112 | + "user %s group administrators password plaintext %s" |
| 113 | + % (self.username, self.password) |
| 114 | + ) |
| 115 | + |
| 116 | + # configure mgmt interface |
| 117 | + self.wait_write("interface mgmt") |
| 118 | + self.wait_write("ip static 10.0.0.15/24") |
| 119 | + self.wait_write("no shutdown") |
| 120 | + self.wait_write("exit") |
| 121 | + self.wait_write("ssh server vrf mgmt") |
| 122 | + self.wait_write("https-server vrf mgmt") |
| 123 | + self.wait_write("ntp vrf mgmt") |
| 124 | + |
| 125 | + self.wait_write(f"hostname {self.hostname}") |
| 126 | + |
| 127 | + self.wait_write("end") |
| 128 | + self.wait_write("write memory") |
| 129 | + |
| 130 | + def startup_config(self): |
| 131 | + """Load additional config provided by user.""" |
| 132 | + |
| 133 | + if not os.path.exists(STARTUP_CONFIG_FILE): |
| 134 | + self.logger.trace(f"Startup config file {STARTUP_CONFIG_FILE} is not found") |
| 135 | + return |
| 136 | + |
| 137 | + self.logger.trace(f"Startup config file {STARTUP_CONFIG_FILE} exists") |
| 138 | + with open(STARTUP_CONFIG_FILE) as file: |
| 139 | + config_lines = file.readlines() |
| 140 | + config_lines = [line.rstrip() for line in config_lines] |
| 141 | + self.logger.trace(f"Parsed startup config file {STARTUP_CONFIG_FILE}") |
| 142 | + |
| 143 | + self.logger.info(f"Writing lines from {STARTUP_CONFIG_FILE}") |
| 144 | + |
| 145 | + self.wait_write("configure") |
| 146 | + # Apply lines from file |
| 147 | + for line in config_lines: |
| 148 | + self.wait_write(line) |
| 149 | + # End and Save |
| 150 | + self.wait_write("end") |
| 151 | + self.wait_write("write memory") |
| 152 | + |
| 153 | + |
| 154 | +class AOSCX(vrnetlab.VR): |
| 155 | + def __init__(self, hostname, username, password, conn_mode): |
| 156 | + super(AOSCX, self).__init__(username, password) |
| 157 | + self.vms = [AOSCX_vm(hostname, username, password, conn_mode)] |
| 158 | + |
| 159 | + |
| 160 | +if __name__ == "__main__": |
| 161 | + import argparse |
| 162 | + |
| 163 | + parser = argparse.ArgumentParser(description="") |
| 164 | + parser.add_argument( |
| 165 | + "--trace", action="store_true", help="enable trace level logging" |
| 166 | + ) |
| 167 | + parser.add_argument("--hostname", default="vr-aoscx", help="Router hostname") |
| 168 | + parser.add_argument("--username", default="vrnetlab", help="Username") |
| 169 | + parser.add_argument("--password", default="VR-netlab9", help="Password") |
| 170 | + parser.add_argument( |
| 171 | + "--connection-mode", |
| 172 | + default="vrxcon", |
| 173 | + help="Connection mode to use in the datapath", |
| 174 | + ) |
| 175 | + args = parser.parse_args() |
| 176 | + |
| 177 | + LOG_FORMAT = "%(asctime)s: %(module)-10s %(levelname)-8s %(message)s" |
| 178 | + logging.basicConfig(format=LOG_FORMAT) |
| 179 | + logger = logging.getLogger() |
| 180 | + |
| 181 | + logger.setLevel(logging.DEBUG) |
| 182 | + if args.trace: |
| 183 | + logger.setLevel(1) |
| 184 | + |
| 185 | + logger.debug(f"Environment variables: {os.environ}") |
| 186 | + vrnetlab.boot_delay() |
| 187 | + |
| 188 | + vr = AOSCX(args.hostname, args.username, args.password, args.connection_mode) |
| 189 | + vr.start() |
| 190 | + |
0 commit comments