Scenario: I wanted to substitute one HEX code for another in a stylesheet # vi stylesheet.css Once in Vi :1, $ s/e5e5e5/1A1A33/g
Author: Jordansphere
I currently work for an ISP on the South coast as a Senior Engineer. I mainly spend my time maintaining the Cloud. CCNA, VCP4/5, VCP-Cloud
UNMAP – Reclaim Space on Equallogic via VMware Datastores
Scenario: We have a 2TB LUN thin provisioned on an Equallogic group. This is is used for a VMFS5 datastore on an ESXi 5.1 cluster. We were getting warnings from the SANs LUN is over our warning threshold. However, VMWare was reporting nowhere near that limit. Using the UNMAP facility available in ESXi 5.0u1 + we are Read More…
Intermittent Loss of Connectivity to Storage – ESXi
Network: A small private cloud which containted two ESxi 5.0 hosts and a Dell Powervault SAN connected via stacked Cisco 3750s. A pRDM is attached to one VM which was directly connected through to a QNAP TS-859U-RP+ on the storage network.. Each Esxi host contains 3 VMs. Scenario: All 3 VMs on ESXi1 became unavailble. Ping was still accessible but Read More…
PHP White Screen
Scenario: A new webserver setup. HTML pages load fine but PHP shows blank white screen. Apache 2.x / Centos 6.x / PHP 5.3.3 First of all make sure PHP is installed. Then ensure the following lines are in the Apache configuration LoadModule php5_module modules/libphp5.so AddHandler php5-script .php If the same symptoms still persist then Read More…
Setting up vsFTPd to use SSL on FreeBSD
Notes: FreeBSD 9.1 / vsFTPD 3.0.2 / using a CA certificate 1) Ensure both private key and certificate are located in .pem. I named this vsftpd.pem 2) Edit the the vsftpd.conf file # vi /usr/local/etc/vsftpd.conf ### PASV FTP pasv_enable=YES pasv_min_port=49152 pasv_max_port=65535 port_enable=YES ssl_enable=YES ### SSL STUFF allow_anon_ssl=NO force_local_data_ssl=NO force_local_logins_ssl=NO ssl_tlsv1=YES ssl_sslv2=NO ssl_sslv3=NO rsa_cert_file=/usr/local/etc/vsftpd.pem 3) Read More…
Adding a Secondary WAN Subnet to Sonicwall and a Cisco
Example: Current WAN IP range: 100.100.100.0/24 Sonicwall WAN IP: 100.100.100.100 Cisco Router: 100.100.100.1 New WAN IP range: 101.101.101.0/27 You can add a static ARP entry on the Sonicwall but there is an easier method. Simply set a Read More…
Cannot connect to vCenter Single Sign On Server via Web Client
Problem: None of our users (including admin@system-domain) could log in via the web client. The normal vSphere client was accepting logins. Looking at the vsphere_client_virgo.log file in C:\Program Files\VMware\Infrastructure\SSOServer\security\ we could see the following error: [2013-11-21 10:55:57.553] ERROR [ERROR] http-bio-9443-exec-29 9D007B355802AF829F8A1DF1B5D4EFD6 com.vmware.vsphere.client.security.sso.SsoAuthenticationHandler Error during authentication com.vmware.vise.vim.security.sso.exception.SsoServiceException: java.security.cert.CertificateExpiredException: certificate expired on 20131107113017GMT+00:00 All Read More…
Equallogic Load Balancing
A have written a very brief overview of the techniques Equallogic use for load balancing in a storage pool. These can be split into 3 different components: 1) NLB – Network Load Balancer Depending on network load, Equallogic can redistribute ISCSI connections across Ethernet ports. This is accompolished automatically by using an inbuilt feature of iSCSI called redirection. The Read More…
Remove vCloud Director and Components
To completely uninstall vCloud Director 1.5 and its components then use the following steps as a guidline: 1) Log into your VCD administrators portal and remove everything possible. That includes VMs, VAPPs, VSEs, networks, organizations etc 2) Disable then Unprepare Hosts (this requires maintenance mode) Just for reference. If you ever want to manually put your hosts Read More…
Trimming MySQL bin logs
During MySQL replication, changes on the Master are written to binary logs for the Slave(s) to update. By default these binary logs will continue to grow indefinitely unless you apply a specific setting. In this scenario I have chosen to keep 4 days worth of bin logs. The amount of bin logs is dependant on how much lag you Read More…
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