Tools

• Postgresql
  • Testing HA
• Bitlbee
• Inter Process Communication, Remote Procedure Calls
• Identity Access Management
• Network security
• Terraform

Postgresql

• Barman - for seamless complete database restores

Testing HA

Source

• Network (the network in front of your system as well as the NICs [physical or virtual] themselves)
• Disk IO
• file limits (nofile in Linux)
• RAM. Even if you have oomkiller turned off, the unavailability of RAM could cause issues.
• CPU
• Virtualization Contention (overcommitting the hypervisor)
• Any cgroup limitation (likely to be related to the above)
• kill -9 of any postgres process (except postmaster!). This is a decent simulation of a segfault.

Bitlbee

• irssi is an extensible perl scriptable IRC client for interfacing with the bitlbee instance
• libpurple to interface bitlbee with lots of messaging protocols
• bitlbee-mastodon to connect to mastodon instances via bitlbee

Inter Process Communication, Remote Procedure Calls

gRPC - message interchange format and interface definition language. Protocol Buffers - platform-neutral extensible mechanisms for serializing structured data, default for gRPC.

Identity Access Management

Keycloak

Network security

Tcpdump, Wireshark

Intrusion Detection, Prevention System (IDS, IPS)

Suricata Snort

SysAdmin, Audit, Network, Security tools list

Terraform