rloisell Sysadmin
Platform-spanning Unix/Linux systems administration. This skill is the entry point for both Solaris and RHEL domains.
For detailed Solaris commands (SMF, ZFS, Zones, DTrace, IPMP, OBP), see ../solaris/SKILL.md.
For detailed RHEL commands (systemd, LVM, SELinux, firewalld, nmcli), see ../linux-rhel/SKILL.md.
Platform Decision Table
| Task | Solaris | RHEL/Linux |
|---|---|---|
| Service management | svcs / svcadm / svccfg (SMF) |
systemctl (systemd) |
| View service logs | svcs -x <svc> / svcs -l <svc> |
journalctl -u <unit> |
| Storage management | ZFS / UFS / VxVM | LVM / ext4 / XFS |
| Volume snapshots | zfs snapshot |
LVM snapshots |
| Network bonding | IPMP (ipadm) / LACP (dladm) |
nmcli / bonding / teaming |
| Package management | IPS (pkg) / pkgadd |
dnf / rpm |
| Performance tools | dtrace / prstat / iostat |
perf / sar / iostat |
| Mandatory access | RBAC / Solaris Privileges | SELinux |
| Virtualisation | LDoms / Zones | KVM / containers |
| Boot environment | OBP (ok prompt) |
GRUB2 |
| Crash dump | dumpadm / savecore |
kdump / crash |
Diagnostic First Steps
Service failure
# Solaris
svcs -x # show services in maintenance/degraded
svcs -l <svc> # detail including log path
tail -100 /var/svc/log/<svc>.log
# RHEL
systemctl status <unit>
journalctl -u <unit> -n 100 --no-pager
Storage emergency
# Solaris ZFS
zpool status # pool health
zfs list # dataset usage
zpool scrub <pool> # start scrub
# RHEL LVM
pvs && vgs && lvs # physical/volume/logical view
df -hT # filesystem usage + type
Performance triage
# Solaris
prstat -a 1 5 # process CPU/memory
iostat -xn 1 5 # disk I/O
# RHEL
sar -u 1 5 # CPU utilisation
iostat -xz 1 5 # disk I/O