Linux SysAdmin Consulting
help with full nginx compilation, iptables configuration, dhcp/pxe/kickstart, cacti, nagios, mrtg, puppet, postfix, munin, php-fpm, xymon, rrdtool, and others
Whether you're having trouble compiling an application, want to setup an automated server
deployment system, or need advanced operating system configurations we can help.
We work hand-in-hand with all of our other engineers to identify, resolve, and prevent complex system administration issues.
We work hand-in-hand with all of our other engineers to identify, resolve, and prevent complex system administration issues.
Cloud Consulting (Amazon, Rackspace, etc.)
The last two years have seen an explosion of demand for cloud based system administration experts.
Merely going to "the cloud" will not solve your performance issues if your application is not ready to scale and if your in-house team is not familiar with the latest cloud technologies from Amazon or Rackspace.
When we do sysadmin work in the cloud, we focus on:
Merely going to "the cloud" will not solve your performance issues if your application is not ready to scale and if your in-house team is not familiar with the latest cloud technologies from Amazon or Rackspace.
When we do sysadmin work in the cloud, we focus on:
- Familiarity with leading technologies from Amazon and Rackspace
- Amazon: EC2, S3, EBS, SES, ElastiCache, SimpleDB, CloudWatch, CloudFront
- Rackspace: CloudFiles, CloudServers, CloudSites, Load Balancers
- Potential cost savings versus your current environment
- Aggregate cloud migration and onramping costs
- Configuration of elastic load balancing and scale up/down rules
- Performance impact or gain analysis (dedicated hardware vs. cloud)
- Cloud-to-cloud or off-cloud backup and redundancy solutions
- Diverse customer experience will help in determining which cloud has the features you need.
We can help with:
-
Datacenter
Equipment Placement, Power Architecture, Wiring, Remote Hands (in Silicon Valley, Manhattan only)
Operating Systems
CentOS, FreeBSD, 25% Windows Surcharge
Custom Environments
PHP, Perl, C/C++, Awk, Sed, Shell scripting (bash)
Cloud
Private Cloud Computing for secure data and applicationsCloud onrampingCloud consolidation, infrastructure optimization, instance bloat reduction
Servers
Apache, Lighttpd, Nginx, Glassfish, Varnish, Sphinx, SquidLoad Balancing
F5, HAProxy, Nginx reverse proxy with caching
Databases
MySQL, SQL Server
Network, DNS and Firewalling
Advanced DNS configs, Bind, VPN, DjbDns, ipf, ipfw, iptables, LVS
Mail
Amazon SES, Sendgrid, Postfix, Sendmail, Qmail, Exim, Dovecot, Courier-imap, Cyrus
Caching
Memcache, Eaccelerator, APC, Redis, Sphinx, Lucene, Squid
Storage Technologies
FUSE FS, S3FS, LVM, NFS, CIFS/Samba
System Administration and Operations
Nagios, Cacti, Puppet, Smokeping, RRDTool, Csync2, Rsync, Rdiff, SNMP Debugging and profiling, Oprofile, Gdb
Control Panels and Virtualization
Vmware ESX, Xen
Version Control
GIT, CVS, SVN
Hardware
LOM, Remote IP KVM, Remote Power Management (PDU's), Cisco/Juniper/HP Switches &Routers, F5 Load Balancers
Common Problems
- Amazon to Rackspace
- Rackspace to Amazon
- EC2, EBS, RDS Migrations
- Elastic Load Balancing
- Cloud-to-Cloud Redundancy
- No disaster recovery
- Kernel settings are unoptimized
- Too much logging or not enough logging
- Filesystem selection and tuning
- Bad code deployment strategy
- Slow server provisioning
- Setting up a repository
- Poor NFS performance
- No centralized logging or auditing
- No monitoring or metrics
- No SMTP security
- Mismatched time and zone settings
- Out of date versions
- Sharing data across multiple datacenters
- Optimized configuration files
- Inefficient .htaccess or mod_rewrites
- Inefficient iptables config
- Custom kernel compilation
- Identifying memory or cpu leaks
- No memcached redundancy
- Custom compilations



