Differences

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--- linux:systemd [2020/04/24 22:09] – [Systemctl] tmade
+++ linux:systemd [2024/10/10 14:59] (current) – [Commands] tmade
@@ Line 1: / Line 1: @@
 ===== Systemctl =====
+==== Commands ====
   systemctl disable service                                    #Disable service from autostart e.g. "systemctl disable dhcpcd.service"
@@ Line 20: / Line 22: @@
   journalctl
   journalctl -xe
-  journalctl -u sshd -f                                        # "-f" -> follow such als "tail -f file"
+  journalctl -u sshd -f                                        # "-f" -> follow such as "tail -f file"
   journalctl -u kubelet.service
   systemctl list-units --state=failed
@@ Line 38: / Line 40: @@
   systemctl list-units --type=mount
   systemctl stop ufw.service
+  systemctl --failed                                           #check failed services
 ==== Set Runlevel ====
@@ Line 51: / Line 54: @@
   ln -sf /usr/lib/systemd/system/multi-user.target /etc/systemd/system/default.target
-===== Service Units =====
+==== Service Units ====
 Service units are located on SLES12 in:
@@ Line 69: / Line 72: @@
   systemctl daemon-reload
-to make it active.
+to update it.
 **Warning: Always do systemd customization in "/etc/systemd/system/", never in "/usr/lib/systemd/system/". Otherwise your changes will be overwritten by the next update of systemd!**
@@ Line 132: / Line 135: @@
 <code>
 [Unit]
-Description=Load iptables Rules
+Description=iptables
-After=bind9.service
+DefaultDependencies=no
+Wants=network-pre.target systemd-modules-load.service local-fs.target
+Before=network-pre.target shutdown.target
+After=systemd-modules-load.service local-fs.target
+Conflicts=shutdown.target
 [Service]
 Type=oneshot
 RemainAfterExit=yes
-ExecStart=/bin/sh -c "/sbin/iptables-restore < /etc/iptables.up.rules"
+#ExecStartPre=
+ExecStart=/bin/sh -c "/sbin/iptables-restore < /etc/iptables"
+ExecStartPost=/usr/bin/echo -e "\033[0;33m Start routing! \033[0m"
+ExecStartPost=/bin/sh -c "/usr/bin/echo "1" > /proc/sys/net/ipv4/ip_forward"
+ExecStop=/usr/bin/echo -e "\033[0;33m Stop routing! \033[0m"
+ExecStop=/bin/sh -c "/usr/bin/echo "0" > /proc/sys/net/ipv4/ip_forward"
+ExecStop=/bin/sh -c "/sbin/iptables -F && /sbin/iptables -X && /sbin/iptables -t nat -F && /sbin/iptables -t nat -X && /sbin/iptables -t mangle -F && /sbin/iptables -t mangle -X && /sbin/iptables -P INPUT ACCEPT && /sbin/iptables -P FORWARD ACCEPT && /sbin/iptables -P OUTPUT ACCEPT"
+ExecStop=/usr/bin/echo -e "\033[0;33m iptables deleted! \033[0m"
 [Install]
 WantedBy=multi-user.target
-WantedBy=network-online.target
+#WantedBy=network-online.target
 </code>
@@ Line 222: / Line 237: @@
 to service unit!
-===Targets===
+====systemd targets====
   multi-user.target                  #multiuser + network