Prometheus 3.15.1 and snmp_exporter 0.31.0 polling Cisco IOS XE 17.18.2 over SNMPv3: generator config, secrets in a separate auth.yml, relabeling, and a Grafana board. The switch image rejected authPriv, and a walk took 0.11 seconds.
Zabbix 7.0.32 LTS on MySQL 8.4: measure NVPS and table sizes, set history and trends retention, read the housekeeper log, and prove a mysqldump by restoring it and matching 415 hosts, 18,923 items and 7,140 triggers. Plus what 8.0 needs.
What the Zabbix 7.0 Cisco IOS by SNMP template really did on two IOS XE devices: which triggers fired for real, why High bandwidth fired 9 times for nothing, and the CPU, memory and environment items that never appeared, with nothing to warn you.
Three ways to add hosts to Zabbix 7.0 without the host form, each tested by deleting a real host: SNMPv3 network discovery for an IOS XE switch, agent 2 autoregistration for a Linux server, and an idempotent Python API script that onboards from a CSV.
IOS XE 17.18.2 syslog through rsyslog and SNMP traps through snmptrapd into Zabbix 7.0.32, tested with a real shutdown: trap problem in 2.5 seconds, syslog in 4.5, polling in 8.5. Plus the rsyslog permission error, logrt vs log, and the trap enable trap.
Zabbix 7.0 email alerting for Cisco IOS XE: media type, user media, a tag-matched action, two escalation steps, and recovery and update messages, tested by shutting a WAN link. The media severity filter stopped step 2 for an Average trigger.
One WAN link failure opened six Zabbix problems. Dependencies from link to OSPF to BGP, plus a cross-device dependency on the far router, cut it to two. Also: a flap trigger with a recovery expression and a CPU hysteresis trigger tested with real load.
A Grafana NOC board on Zabbix 7.0 with the Zabbix plugin, a read-only API token, link tiles, and a host drill-down, tested with a real outage. A shut port goes red but raises no problem by design, and stale gauges keep showing a dead host's last value.
Zabbix agent 2 7.0.32 on Ubuntu 24.04: install from the Zabbix repo, passive vs active checks, and the Linux template with 73 items. Then the three real faults: a firewall on 10050, a block on 10051, and a Hostname mismatch that passive checks hide.
Cisco IOS XE 17.18.2 routers and a switch in Zabbix 7.0 over SNMPv3: view, group, user and ACL, an snmpget test, the Cisco IOS by SNMP template, and the failures. Auth failure means bad credentials; a timeout means ACL, priv, or security level.
Semaphore UI 2.19.17 running Ansible network playbooks against six IOS XE devices: install, repository, vault key, environment, templates, and a schedule, with three real failed runs. A wrong vault key still worked because the repo ansible.cfg used the real password file.
A Git CI gate for Ansible network configs on IOS XE: a pre-receive hook running yamllint, ansible-lint and check mode, and a post-receive deploy. Two pushes were rejected for real, and ios_config check mode printed no diff until the playbook showed its updates.