Maintaining the System Software

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1 CHAPTER 2 This chapter covers the tasks required for maintaining a Content Engine. Upgrading the System Software, page 2-1 Recovering the System Software, page 2-2 Maintaining the Hard Disk Storage, page 2-5 Sample Configurations, page 2-11 Upgrading the System Software Cisco Cache software 3.x.x system image files exist as binary files only (.bin suffix). System images are available to download from Cisco Connection Online (CCO). The.bin file contains the full-image software with the graphical user interface (GUI). To upgrade the system software, the Content Engine FTP client software copies the system image file to Content Engine main memory and then writes the image to Flash memory. See the Recovering the System Software section on page 2-2 for instructions on booting the Content Engine in the event that the software upgrade fails. Note We recommend that when loading a system image, you redirect traffic around the Content Engine to prevent degrading HTTP service. The following procedure describes how to upgrade the Content Engine system software and optionally change the boot parameters. Step 1 Step 2 Download the.bin system image file to a Windows NT, LINUX, or UNIX host that is running an FTP server. Perform the following substeps to copy the system image file from an FTP server to the Content Engine Flash memory. In this example, the FTP server has the IP address with the system image file (ce590_example.bin) located in the /images directory: a. At the EXEC command line of your Content Engine, enter the following: copy ftp flash /images ce590_example.bin b. If the FTP server username prompt appears, enter your username. c. If the FTP server password prompt appears, enter your password. 2-1

2 Recovering the System Software Chapter 2 The following messages appear: Initiating FTP download... Downloaded byte image file A new system image has been downloaded. You should write it to flash at this time. Write to flash [yes]: _ To write the new system image to Flash memory, press Enter to accept the default (yes) or enter yes. The following message appears: Ok, writing new image to flash d. At the CLI prompt, reboot the Content Engine. Enter: reload Recovering the System Software The Content Engine has a resident rescue system image that is invoked should the image in Flash memory be corrupted. A corrupted system image can result from a power failure that occurs while a system image is being written to Flash memory. The rescue image can download a system image to the Content Engine main memory and write it to Flash memory. To install a new system image with the rescue image, perform the following steps: Step 1 Step 2 Step 3 Download the.bin system image file to a Windows NT, LINUX, or UNIX host that is running an FTP server. Establish a console connection to the Content Engine and open a terminal session. Reboot the Content Engine by toggling the power on/off switch. The rescue image dialog menu appears. The following example demonstrates how to interact with the rescue dialog (user input is denoted by entries in bold typeface): This is the rescue image. The purpose of this software is to let you download and install a new system image onto your system's boot flash device. This software has been invoked either manually (if you entered `***' to the bootloader prompt) or has been invoked by the bootloader if it discovered that your system image in flash had been corrupted. To download an image, this software will request the following information from you: - which network interface to use - IP address and netmask for the selected interface - default gateway IP address - server IP address - which protocol to use to connect to server - username/password (if applicable) - path to system image on server Please enter an interface from the following list: 0: FastEthernet 0/0 1: FastEthernet 0/1 0 Using interface FastEthernet 0/0 2-2

3 Chapter 2 Recovering the System Software Please enter the local IP address to use for this interface: [Enter IP Address]: Please enter the netmask for this interface: [Enter Netmask]: Please enter the IP address for the default gateway: [Enter Gateway IP Address]: Please enter the IP address for the FTP server where you wish to obtain the new system image: [Enter Server IP Address]: Please enter your username on the FTP server (or 'anonymous'): [Enter Username on server (e.g. anonymous)]: anonymous Please enter the password for username 'anonymous' on FTP server (an address): Please enter the directory containing the image file on the FTP server: [Enter Directory on server (e.g. /)]: / Please enter the file name of the system image file on the FTP server: [Enter Filename on server]: dmdsysimg-test.bin Here is the configuration you have entered: Current config: IP Address: Netmask: Gateway Address: Server Address: Username: anonymous Password: ************* Image directory: / Image filename: dmdsysimg-test.bin Attempting download... Downloaded byte image file A new system image has been downloaded. You should write it to flash at this time. Please enter 'yes' below to indicate that this is what you want to do: [Enter confirmation ('yes' or 'no')]: yes Ok, writing new image to flash...finished writing image to flash. Enter 'reboot' to reboot, or 'again' to download and install a new image: [Enter reboot confirmation ('reboot' or 'again')]: reboot Restarting system. Initializing memory. Please wait. 2-3

4 Recovering a Lost Password Chapter 2 Step 4 Log on to the Content Engine with your new admin password. Verify that you are running the correct version by entering the show version command. Username: admin Password: Console> enable Console# show version Copyright (c) by Cisco Systems, Inc. Cisco Content Engine Software Release 3.00 (build eft Sep ) Compiled 18:48:10 Sep by (cisco) System was restarted on Sat Mar 15 22:12: The system has been up for 1 day, 5 hours, 26 minutes, 53 seconds. You can now use the management interface or the CLI to enable WCCP or proxy mode and start caching. Recovering a Lost Password If a user password is forgotten, lost, or misconfigured, perform the following steps to reset the password. Note There is no way to restore a lost password. You must reset the password to a new one, as described in this procedure. Step 1 Step 2 Step 3 Establish a console connection to the Content Engine and open a terminal session. At the following prompt, press Return: Cisco CE boot:hit RETURN to set boot flags:0009 When prompted to enter bootflags, enter this value: 0x800 For example: Available boot flags (enter the sum of the desired flags): 0x bypass nvram config 0x disable login security [CE boot - enter bootflags]:0x8000 You have entered boot flags = 0x8000 Boot with these flags? [yes]:yes [Display output omitted] Step 4 When the Content Engine completes the boot sequence, you are prompted to enter the username to access the CLI. Enter the default administrator user name (admin): Cisco Content Engine Console Username: admin Setting the configuration flags field to 0x8000 lets you into the system, bypassing all security. Setting the configuration flags field to 0x4000 lets you bypass the NVRAM configuration. 2-4

5 Chapter 2 Maintaining the Hard Disk Storage Step 5 Step 6 Once you see the CLI prompt, set the password for the user using the user modify username name password new-password command in the global configuration mode. Use the write command to save the configuration change. Maintaining the Hard Disk Storage This section describes the procedures for maintaining the disk storage. The principal disk partitions are for the system file system and cache file system (sysfs and cfs, respectively). The sysfs partitions are used principally to store output from logging processes, the cfs partitions store cached network content. Currently, only sysfs and cfs are supported, and only one partition is supported per disk. See the release notes for the specific version of the Cache Software you are running for further information. The Cisco Content Engine and the Cisco Storage Array may be shipped with unformatted disks, in which case sysfs and cfs disks must be manually partitioned, formatted, and mounted. Use the show disks command to display the complement of disks that can be supported by your Content Engine, as well as the partition and mounting status of any prepared disks. The following example is derived from a Content Engine 590 connected to a Storage Array (SA-6). The output shows a single sysfs disk mounted on the default volume /local1 and a single unmounted cfs disk. The disks marked unknown unmounted are unformatted disks that occupy slots 2 4 of the Storage Array, and those marked NOT available indicate that slots 5 7 are empty. Console# show disks disk00 (scsi host 0, channel 0, id 0) FS: disk01 (scsi host 0, channel 0, id 1) FS: disk02 (scsi host 3, channel 0, id 0) FS: disk03 (scsi host 3, channel 0, id 1) FS: disk04 (scsi host 3, channel 0, id 2) FS: disk05 (scsi host 3, channel 0, id 3) FS: disk06 (scsi host 3, channel 0, id 4) FS: disk07 (scsi host 3, channel 0, id 5) FS: sysfs mounted at: /local1 sysfs mounted at: /local2 unknown unmounted unknown unmounted unknown unmounted NOT available NOT available NOT available Use the show disk-partitions commands to determine the type of partition and the size of a particular disk. Console# show disk-partitions disk00 Disk size in blocks: Partition 1: SYSFS offset: 16 blocks, size blocks Console# show disk-partitions disk01 Disk size in blocks: Partition 1: CFS offset: 16 blocks, size blocks 2-5

6 Maintaining the Hard Disk Storage Chapter 2 Typical disk configurations for Content Engines are shown in Table 2-1: Table 2-1 Typical Disk Configurations Content Engine Model Disk Configuration 590 with Storage Array (SA-6) disk00 sysfs mounted at /local1 disk01 sysfs mounted at /local2 disk02 disk07 cfs 7320 with Storage Array (SA-12) disk00 sysfs mounted at /local1 disk01 sysfs mounted at /local2 disk02 disk21 cfs Preparing a Sysfs Disk All Content Engine logging processes store output on sysfs volumes. A sysfs volume must be mounted before these processes can operate. Two sysfs volumes are currently supported by the Cache software, mounted as /local1 and /local2. Each volume makes up an entire disk. The content of sysfs disks can be viewed or manipulated with the commands listed in Table 2-2. Table 2-2 System File System (Sysfs)-Related Commands Sysfs-Related Command Syntax Description cd cd directoryname Changes the current directory. copy copy {disk {flash imagename startup-config filename} flash disk imagename ftp flash {hostname ipaddress} remotedir remotefilename running-config {disk filename startup-config tftp {hostname ipaddress} filename} startup-config {disk filename tftp {hostname ipaddress} filename} tech-support {disk filename tftp {hostname ipaddress} filename}} tftp {disk {hostname ipaddress} remotefilename localfilename flash {hostname ipaddress} imagename}} Copies configuration or image files. cpfile cpfile oldfilename newfilename Copies sysfs files. delfile del filename Removes a file. deltree deltree directory Removes directory and all subdirectories. dir dir [directory] Displays files in long list format. disk disk {erase-all-partitions disk name manufacture disk name partition disk name {cfs sysfs} prepare disk name} Disk management commands. logging logging {console {enable priority loglevels} disk {enable filename filename priority loglevels recycle size} facility facility host {ip-address priority loglevels} Configures system logging(syslog). lls lls [directory] Displays directory files in long list format. ls ls [directory] Displays files in directory. 2-6

7 Chapter 2 Maintaining the Hard Disk Storage Table 2-2 System File System (Sysfs)-Related Commands (continued) Sysfs-Related Command Syntax Description mkdir mkdir directory Makes directory. mkfile mkfile filename Makes file (for testing). pwd pwd Displays pathname of present working directory. rename rename sourcefile destinationfile Renames a file (pathname). show disk-partitions show disk-partitions diskname Displays disk partition information. show disks show disks Displays disk names and SCSI identifiers. sysfs sysfs {check disk name format disk name mount {disk name {local1 local2}} repair disk name sync unmount {local1 local2}} Maintains system file system. rmdir rmdir directory Removes directory. transaction-log transaction-log force {archive export} Forces archive of working log file to make a transaction log file. transaction-logs transaction-logs {archive {interval {every-day {at time every hour} every-hour {at minute every interval}} max-file-size filesize} enable export {enable ftp-server {hostname servipaddrs} login passw directory} file-marker sanitize} Configures transaction logging. type type filename Displays a file. write write [erase memory terminal] Writes running configuration to memory or terminal. A typical sysfs setup uses either or both of the first two disks (disk00 and disk01) as the sysfs. The first sysfs disk that is partitioned, formatted, and mounted cannot be unmounted. The disk is checked and repaired automatically when it is mounted during the bootup or reload sequence. Caution Anytime a volume is partitioned or formatted, all the data on the disk is lost. To prepare a sysfs disk volume, perform the following steps at the EXEC level CLI: Step 1 Step 2 Step 3 Step 4 Identify the disk to be prepared as a syfs disk with the show disks EXEC command. In the steps that follow, the disk is disk00. Unmount the intended volume if it is mounted as a cfs volume. Enter the following command: disk partition disk00 sysfs Enter the following command: sysfs format disk00 2-7

8 Maintaining the Hard Disk Storage Chapter 2 Step 5 Step 6 Enter the following command: sysfs mount disk00 local1 The sysfs disk can be mounted at volume name /local1 or /local2 Enter the show disks command to verify the disk status. Preparing a Cfs Disk Disks formatted with the cache file system (cfs) store cached content from the network. The content on a cfs disk cannot be examined. Commands related to maintaining the cfs are listed in Table 2-3. Table 2-3 Cache File System (Cfs)-Related Commands Cfs-Related Command Syntax Description cfs cfs {clear diskname [force] format diskname mount diskname reset diskname synchronize diskname unmount diskname} Cache file system commands. disk disk {erase-all-partitions disk name manufacture disk name partition disk name {cfs sysfs} prepare disk name} Disk management commands. show cfs show cfs {statistics volumes} Displays cache file system status. show disk-partitions show disk-partitions diskname Displays disk partition information. show disks show disks Displays disk names and SCSI identifiers. show statistics show statistics {bypass [auth-traffic load summary] cfs dns-cache ftp http {ims object performance requests savings usage} https icmp icp {client server} ip netstat routing snmp tcp transaction-logs udp} Displays statistics. Before a disk can be used to store cached content, it must be partitioned, formatted, and mounted with the cache file system. The disk manufacture EXEC command automatically performs these three functions for cfs volumes. Be sure to use the disk manufacture command if the disk was never formatted, or when the last formatting of the disk was other than from the Content Engine. The disk prepare command unmounts, partitions, and formats the disk, but does not mount the new cfs volume. Caution Anytime a volume is partitioned or formatted, all the data on the disk is lost. 2-8

9 Chapter 2 Maintaining the Hard Disk Storage To prepare a cfs disk volume, perform the following steps at the EXEC level CLI: Step 1 Step 2 Step 3 Step 4 Identify the disks to be prepared as cfs disks with the show disks EXEC command. In the steps that follow, the disk is disk07. Enter the following command: disk manufacture disk07 Disk07 will be unmounted (if necessary), partitioned, formatted, and mounted as a cfs volume. Repeat Step 2 for all disks intended as cfs disks. Enter the show cfs volumes command to verify the disk status. If all cfs volumes are unmounted, the Content Engine will continue to fulfill client content requests directly with the origin servers, though no content can be cached. To unmount a cfs volume, use the cfs unmount EXEC command. The cfs unmount command frees the in-memory data structures that map to the physical (disk) cfs partition. The cfs clear command deletes nonbusy objects from the specified cfs volume. A nonbusy object is an object that is not being accessed (read or written). The cfs clear command (without force) deletes all possible objects without generating a broken GIF or HTML message to the client. The cfs clear force command deletes all objects, busy or nonbusy, and may generate broken GIF or HTML messages for objects that were being read from the disk when the command was executed. If an object is being written to the Content Engine disk when a cfs clear force command is executed, the application stops caching that object but still delivers the object from the Web server to the client. The cfs reset command unmounts, formats, and mounts a specified volume. Unmounting a volume can result in broken GIF or HTML messages for objects that are being read from the disk (cache hits) when the command is executed. When a cfs volume is reset, all cfs data on that volume is lost. Note The cfs reset command can be invoked on unmounted volumes. The cfs format command creates the cache file system internal dbs for the cfs partition of the disk if the volume is unmounted. It formats the cfs partition to prepare it for a cfs mount. The cfs mount command creates and maps data structures in memory to the cfs partition. The cfs sync command synchronizes the cache file system contents from memory to disk. Although synchronization is performed at regular intervals while the Content Engine is running, this command can be used to ensure that all data is written to disk before you reset or turn off the Content Engine. Synchronization can also be done with the cache synchronize command. 2-9

10 Maintaining the Hard Disk Storage Chapter 2 Disk Preparation Procedure for the Cisco Storage Array The Storage Array hard disks may be shipped without formatting or partitions. You must enter the disk manufacture EXEC command for each newly installed hard disk. Use the disk and cfs commands for subsequent maintenance of the disks. It is assumed that all Storage Array disks are to be formatted as cfs volumes. Perform the following procedure when installing a new hard disk for the Cisco Storage Array: Step 1 Step 2 Step 3 Step 4 Make sure the disk drives are properly inserted into the Storage Array slots, and that the SCSI cable connectors on the Content Engine and Storage Array are tightened. Power on the Storage Array, and then power on the Content Engine. Determine the disk numbers of the unformatted disks with the the show disks command. The show disks command displays all unformatted disks as unknown unmounted. In the following example, a 590 Content Engine is connected to a fully populated SA-6 Storage Array in joined bus mode. Disks are not partitioned, formatted, or mounted. Console# show cfs volumes disk00 (scsi host 0, channel 0, id 0) FS: sysfs mounted at: /local1 disk01 (scsi host 0, channel 0, id 1) FS: sysfs mounted at: /local2 disk02 (scsi host 3, channel 0, id 0) FS: unknown unmounted disk03 (scsi host 3, channel 0, id 1) FS: unknown unmounted disk04 (scsi host 3, channel 0, id 2) FS: unknown unmounted disk05 (scsi host 3, channel 0, id 3) FS: unknown unmounted disk06 (scsi host 3, channel 0, id 4) FS: unknown unmounted disk07 (scsi host 3, channel 0, id 5) FS: unknown unmounted The leftmost hard disk inserted in an SA-6 Storage Array bus is always disk 02. Counting to the right, the next disk is 03, the next disk is 04, and so on. There can be empty slots between disks on the same bus, but this is not recommended. In a two-host, split-bus configuration, each bus is counted independently. For example, in a split-bus, fully populated SA-6 Storage Array, bus 0 disk drive numbers are 02, 03, and 04, and bus 1 disk drive numbers are 02, 03, and 04. If the first disk on bus 1 is removed (slot 5 is empty) and the Content Engine is rebooted, bus 0 numbers are still 02, 03, and 04, but bus 1 numbers are 02 and 03. The empty disk slot is skipped, and the count begins with the first detected disk on bus 1. Enter the disk manufacture command for each new hard disk to be installed. In the following example, the disks with target numbers 02 and 03 are partitioned, formatted, and mounted with the disk manufacture EXEC command. Console# disk manufacture disk02 Making disk07 a CFS disk and mounting it Erased all partitions on disk02 Partitioned disk disk02 as CFS disk Formatted disk to CFS disk02 mounted as CFS disk Done disk manufacture successfully Console# disk manufacture disk03 Making disk03 a CFS disk and mounting it Erased all partitions on disk03 Partitioned disk disk03 as CFS disk Formatted disk to CFS disk03 mounted as CFS disk Done disk manufacture successfully 2-10

11 Chapter 2 Sample Configurations Step 5 Enter the show disks command to verify that the disks are mounted. ContentEngine# show disks disk00 (scsi host 0, channel 0, id 0) FS: sysfs mounted at: /local1 disk01 (scsi host 0, channel 0, id 0) FS: sysfs mounted at: /local2 disk02 (scsi host 0, channel 0, id 8) FS: cfs mounted disk03 (scsi host 0, channel 0, id 9) FS: cfs mounted disk04 (scsi host 0, channel 0, id 10) FS: cfs mounted disk05 (scsi host 0, channel 0, id 11) FS: cfs mounted disk06 (scsi host 0, channel 0, id 12) FS: cfs mounted disk07 (scsi host 0, channel 0, id 13) FS: cfs mounted Sample Configurations The following sample configurations are outputs of the show running-config command and can be used as a guide for configuring the Content Engine in WCCP Version 1 and Version 2 environments. If a feature is not enabled, it does not appear in the running configuration display, though settings configured for that feature are displayed. WCCP Version 1 Sample Configuration The following is a sample configuration of a Content Engine in a WCCP Version 1 environment: console# show running-config Building configuration... Current configuration: logging event-export critical-events alert kernel logging user add admin uid 0 password 1 "ceszbyeb" capability admin-access user add britt uid 5001 password 1 "bbdze9esbs" capability telnet-access hostname cache1d interface ethernet 0 ip address ip broadcast-address exit interface ethernet 1 exit ip default-gateway ip name-server ip domain-name cisco.com cron file /local/etc/crontab ntp server http proxy incoming 8080 icp server remote-client no-fetch 2-11

12 Sample Configurations Chapter 2 url-filter good-sites-allow wccp home-router wccp version 1 transaction-logs destination disk transaction-logs interval 750 trusted-host end cache1d# WCCP Version 2 Sample Configuration The following is a sample configuration of a Content Engine in a WCCP Version 2 environment: console# show running-config hostname http proxy incoming 8080 ip domain-name cisco.com exec-timeout 30 interface FastEthernet 0/0 ip address exit interface FastEthernet 0/1 shutdown exit ip default-gateway ip name-server bypass static bypass static any-client bypass static any-server bypass auth-traffic enable proxy-protocols outgoing-proxy exclude cruzio.com wccp router-list wccp web-cache router-list-num 1 wccp version

13 Chapter 2 Sample Configurations transaction-logs archive interval every-day at 11:26 transaction-logs file-marker transaction-logs export enable transaction-logs export ftp-server username passw /ftpdirectory transaction-logs export ftp-server myname mypass /tmp/logfiles username admin password 1.9ENIWf7GjMm2 username admin privilege

14 Sample Configurations Chapter

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