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| Note |
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Note as of March 2024 yarnman 2.5.x is in sunset with end of life late 2024 - all new deployment should be using 2.6.x - install guide found here Yarnman Photon Powered (YM-PH) - Installation and Upgrade Guide |
| Table of Contents |
|---|
Prerequisites
Hardware | Specification | ||
Virtual Machines |
| ||
Virtualization software | VMware vSphere ESXi 6 or higher VMware Workstation support 12 or higher |
Yarnman Deployment
1. Deploy yarnman OVA to VMware
Yarnman ova can be depoyed either using VMware OVFtool or by uploading the ova to vSphere/ESXi
...
| Info |
|---|
If using Ovftool to deploy
|
2. Using VMware Console log into Yarnman to bootstrap configuration
Default username: yarnman Password: yarnman
Set the IP address using the VMware console.
cd /opt/yarnlab/yarnman
sudo ./scripts/bootstrap.sh
Do you want to set a static IP? Y or N : Enter Y to set static IP
You will be asked to select network interface : select number adjacent to ensXX
enter Ip address : Enter the required IP address
enter netmask : to accept default press Enter, otherwise enter required netmask
enter gateway : enter the required gateway address
enter dns server1 : to accept default, press Enter, otherwise enter required DNS server address
You will be asked if you want to change hostname : to accept existing hostname press N otherwise, Y + enter new hostname
At this point, network will restartYou will be asked if you wish to change SSH password : enter N to keep default or Y to change password
You will be asked if you wish to change yarnman-protected password : Enter N to keep default or Y to change the protected password
To change the password at any time SSH and run the passwd command.
It is strongly recommended to change the default password for SSH access
Update hostname if required via /etc/hosts
Deploy as a Standalone Core
Follow these steps to install the Migration Assistant as a core server. This configuration automatically sets up the server and all required services.
Log in to the Yarnman server as user yarnman using ssh client.
Change the directory by typing cd /opt/yarnlab/yarnman
Run the install script using node and sudo:
sudo node ./scripts/install-as-core-standalone.js -p <password> --couchport <couchport> --redisport <redisport> and substitute the <value>
sudo node ./scripts/install-as-core-standalone.js -p <password> --couchport 5984 --redisport 6379
Note: If copying sample line above, ensure that <password> is replaced with
...
an appropriate database password to be used for the installation
On completion of installation from step 3, Open10 Web Browser, browse to Yarnman IP and set the administrator account password.
Accept the End User License Agreement by selecting the check box.
Under the Set Administrator Password option, enter the password that is used later to log in to the GUI & click "Save Acceptance and Update Administrator".
Login with the username of the administrator and password that you created.
It is strongly recommended to change the default password for web access this is done by going into the default access policy then users
Install As Arm
| Note |
|---|
This is only required for distributed yarnman deployments where network traversal is required |
Only follow these steps if you are deploying Yarnman as a distributed system (multiple VMs)
Note that configuration is required on the core node for allowing connectivity from the Arm to the Core describe in the LOCAL FIREWALL CONFIGURATION section in this document.https://yarnlab.atlassian.net/wiki/spaces/YSP/pages/2730393636/Yarnman+Administration#Local-Firewall-Configuration
This will install the OVA as a node of Yarnman, connect to the central core database and enroll. Once accepted by the core services, interfaces may be added to it
Target full path of the core's Redis - redis://<some host or ipaddress>:<port - likely 6378>
CD to /opt/yarnlab/yarnman/
Run the script using node and sudo:
sudo node ./scripts/install-as-arm.js -n <node name> -c <couchpath> -r <redispath>
with values prepared above substituted for <value>.
Node name to appear on the enrollment screen in AdminApp of the core.
Target full path of the core's CouchDB - http(s)://<some host or ipaddress>:<port - likely 5984>
sudo node ./scripts/install-as-arm.js -n <name> -c http://<core ip>:5984 -r redis://<core ip>:6379'
Go to the Core's Administration App → Enrollments and accept the new node, you may add services and interface in the normal way.
The enrollment process will auto-generate credentials for the Arm.
Setup NTP Synchronization
By default time is synchronized from the virtual host, for distributed deployments it is recommended to setup NTP on both the core and arm nodes
Edit the following file and setting NTP server required replacing 1.2.3.4
Code Block sudo nano /etc/systemd/timesyncd.conf NTP=1.2.3.4Restart time service
Code Block sudo systemctl restart systemd-timesyncd.serviceVerify time is correct after 5 minutes
Code Block yarnman@yarnman-arm:~$ timedatectl status Local time: Wed 2021-06-16 13:13:10 UTC Universal time: Wed 2021-06-16 13:13:10 UTC RTC time: Wed 2021-06-16 13:13:10 Time zone: Etc/UTC (UTC, +0000)
Yarnman 2.5.x administration
Yarnman Management/ Utilities/ Specifications
Yarnman Manual Log Collection
If log collection option as described in previous chapters is not available/ can not be accessed, log collection may be performed manually by ssh access to Yarnman
Please send screenshot of error encountered and detailed steps to reproduce and time stamp from ssh via date command
run command via ssh to collect logs
tar -czvf yarnman-logs.tar.gz --exclude='*.tar.gz' /var/log/yarnman
Then sftp file and send to support as required
Yarnman database log collection
If requested by support this log collection may be required
run command via ssh to collect logs
tar -czvf yarnman-logs-db.tar.gz --exclude='*.tar.gz' /var/log/couchdb/couchdb.log /var/log/couchdb/couchdb.log.1
Then sftp file and send to support as required
Yarnman increase disk space for database
To increase the storage space for any of the log or database filesytems in Yarnman.
| Info |
|---|
Please contact support if you have any queries on appropriate disk space |
2.5.X process
Log in to Yarnman using ssh
Type df which will show you the size of the filesystems. Note the space in var/lib/couchdb. If this is more than 50% used it is recommended to increase space so that less than 50% of the filesystem is used
...
Log in to vCentre and select the VM in question.
If there are any snapshots, these must be removed before increasing the storage for VM (a new snapshot can be performed after increasing disk space)
Increase the disk space - generally, the default diskspace allocated for Yarnman is 100G, increase the required diskspace to ensure that the /var/lib/couchdb partitionwill be less than 50% used
Once the storage space on the VM has been increase - log back into Yarnman using ssh
To increase the storage space for the couchdb partition, using all of the increased VM storage, type sudo ./scripts/resize-disk.sh var-lib-couchdb
Verify that filesystem storage is now OK
To further reduce storage space, it is recommended to compact couchdb as per below process
Yarnman database compaction
From time to time - particularly before/ after migrating very large CUCM clusters using Wrangler or when multiple discoveries are run, it is prudent to compact the couchdb database
| Warning |
|---|
Do not run a database compaction when there is less that 30% disk space available, increase disk space before as the compaction process does temporarily consume additional |
In 2.5.x
Log in to Yarnman using ssh
Type cd /opt/yarnlab/yarnman
type sudo node ./scripts/compactdb.js
Upgrade Yarnman - Apply a patch
| Note |
|---|
Take a VMware snapshot before applying patch |
Process to apply patch in Yarnman
Copy the patch file: yarnman-app-<version>.tar.gz.sig to /opt/yarnlab/install via SFTP
ssh into the server
Run command: cd /opt/yarnlab/yarnman
Run the upgrade script: ./scripts/install-yarnman-app.sh yarnman-app-<version>.tar.gz.sig
| Info |
|---|
If you are supplied an unsigned patch that does not have .sig suffix step 4 is replaced with ./scripts/install-yarnman-app.sh yarnman-app-<version>.tar.gz -i There will also be an error Package is not signed use --ignore-verification |
Upgrade Yarnman – Linux Deps upgrade
| Note |
|---|
Take a VMware snapshot before applying deps upgrade |
Process to upgrade the Linux Deps. It is recommended to take a snapshot prior to update
Copy the update file: yarnman-linux-bundle-master-<version>.tar.gz.sig to /opt/yarnlab/install via SFTP
ssh into the server
Run command: cd /opt/yarnlab/yarnman
Run the upgrade script: ./scripts/ install-linux-deps.sh yarnman-linux-bundle-master-<version>.tar.gz.sig
Note that all download links all have a corresponding .md5 and linux-deps upgrade also have optional md5 verification
Upgrade Yarnman – Linux Version 18 upgrade
Process to upgrade Linux to version 18. It is strongly recommended to take a snapshot prior to upgrade
Download Linux Upgrade Script + Application Patch from Yarnlab web site
https://yldev.blob.core.windows.net/packages/yarnman-app-<Ver>-master-<Build>.tar.gz.sig
SFTP file on to yarnman server - place in install directory /opt/yarnlab/install
Take a Snapshot
ssh to yarnman server
CD /opt/yarnlab/yarnman
Run The application patch
./scripts/install-yarnman-app.sh yarnman-app-<Ver>-master-<Build>.tar.gz.sig
Note: this command may require -i at the end depending on source version. It would then be ./scripts/....tar.gz -i
Verify that app installed correctly in Yarnman Administration App Web GUI
Run the OS upgrade file from ssh directory /opt/yarnlab/yarnman
sudo ./scripts/upgrade-baseos18.sh yarnman-linux-upgrade18-bundle-<Ver>-master-<Build>.tar.gz.sig
Note: this command may require -i at the end depending on source version. It would then be ./scripts/....tar.gz -i
During the upgrade you will be prompted if you want to run a backup - select Y to perform backup
On completion - Y to reboot
Local Firewall Configuration
Default local firewall rules
| Code Block |
|---|
sudo ufw allow ssh
sudo ufw allow http
sudo ufw allow http
ssudo ufw enable |
Additional rules are required on the core node for each arm deployed
| Code Block |
|---|
sudo ufw allow from <ip address of arm> to any proto tcp port 5984,5986
udo ufw allow from <ip address of arm> to any proto tcp port 6379,6380 |
Default Terminator Configuration (Testmate)
| Code Block |
|---|
sudo ufw allow from any proto udp port 6700:6799 |
Yarnman SSL Certificates
Configuring Intermediate Certificates
Typical format for standard SSL.
/opt/yarnlab/yarnman/config
ssl-cert.cert - Standard certificate sent to clients
ssl-key.pem - Private key file for checking response
In order to enable intermediate certificates we must create new folder in /config.
| Code Block |
|---|
~/config
/ca
1-name.crt
2-name.crt
3-name.crt |
The /ca folder contains the intermediate certificates that will be loaded in order. The easiest way to achieve this is to use the naming conventions 1-, 2- etc. Each certificate must end in .crt in order to be loaded.
Once the folder is created and at least one certificate is added in the format indicated the services on the node must be restarted.
Generate CSR
To acquire a new certificate you must generate a CSR (Certificate Signing Request). This may be done initially after creating private key or when a certificate expires
Certificate Locations /opt/yarnlab/yarnman/config
ssl-cert.cert - Standard certificate sent to clients
ssl-key.pem - Private key file for checking response
Open ssh session to server – go to /opt/yarnlab/yarnman/config
To generate CSR
Open Editor 'nano cert.cnf'
In the editor – complete following info
| Code Block |
|---|
[req]
distinguished_name = req_distinguished_name
req_extensions = v3_req
[ req_distinguished_name ]
emailAddress = Email Address (emailAddress_max = 64)
[ v3_req ]
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
subjectAltName = @alt_names (Recommend using DNS name here)
[alt_names]
DNS.1 = <DNS name> |
Backup and Restore
Backup Yarnman
Open SSH session
Run command: cd /opt/yarnlab/yarnman
Run the backup script: ./scripts/backup-yarnman.sh -b
Backup script will create Backup Directory /opt/yarnlab/backup and create backup file
Restoring Backup
Open SSH session
Ensure that the backup directory /opt/yarnlab/backup exists with backup file
Run command: cd /opt/yarnlab/yarnman
Run the restore script: ./scripts/backup-yarnman.sh -r
The backup script will identify the latest backup in the backup directory and restore from there
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Wrangler 2.5.X Setup
Wrangler UCMC will require two services described below
Wrangler OPA App
Interconnect Service
From Top right corner of display drop down +Add Service, select Wrangler OPA Migration App
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Define Service Name, select Yarnman Node, Select UCM Migration Assistant Migration, select required Authentication policy from drop down, then Submit
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Select Services from Menu → Select either Proxy Service or Standalone Proxy Service depending on which proxy service is present by default (Do not add a new proxy service unless specifically required)
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From Proxy Configuration Page, select ‘Service Routing’ from top right corner
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Select ‘Add Yarnapp' and from the drop down, select the Wrangler Migration App ->Submit
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The Wrangler UCMC app has now been added and may be selected from top Right Drop down
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Set up Interconnect Service
Select Services from Menu, then + Add Service, from drop down select Interconnect Service
Populate Service Name Field, select node from Node / Arm field drop down, then select Submit
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