NB: All the PIDs and commands here are from my RedHat system. Do NOT copy any of those PIDs after the kill command on your own system – these are examples.
I was asked to look into a server that was showing a very high load average (indeed the app … Continue reading
After a migration to a pair of 3750Xs I was getting a bunch of disconcerting ARP errors in the logs. After a bit of digging, this appears to be a known bug. Error message content examples are shown below:
Nov 4 12:41:00: %ADJ-3-RESOLVE_REQ: Adj resolve request: Failed to resolve … Continue reading
This post is just a quick reference on how to see whether or not some traffic will pass the rulebase or not.
Tracing policy matching on Juniper SRX (for actual live sessions use ‘show security-flow session’)
show security match-policies from-zone trust to-zone untrust source-port 1024 destination-port 40961 protocol … Continue reading
I was trying to reform an application failover cluster after having to restore a backup and was running into issues. The primary came up absolutely fine but the secondary kept coming up with status “STANDBY_DB_FAILED”.
Looking into the /var/opt/OV/shared/nnm/databases/Postgresql/pg_log files, initially I had this after the DBZIP was received, extracted … Continue reading
Getting TACACs working via the Cisco 4431 Management interface threw up a few issues and took a few tweaks. The final issue I found was that referencing all servers with the tacacs+ keyword doesn’t work, you have to reference the TACACS group with the servers defined within it.
Below is … Continue reading