journald: make sure we retain all stream fds across restarts (#6348)

Currently we set 4096 as maximum for number of stream connections that
we accept. However maximum number of file descriptors that systemd is
willing to accept from us is just 1024. This means we can't retain all
stream connections that we accepted. Hence bump the limit of fds in a
unit file so that systemd holds open all stream fds while we are
restarted.

New limit is set to 4224 (4096 + 128).

diff --git a/units/systemd-journald.service.in b/units/systemd-journald.service.in
index 66b7c6a48e1e691b46989433776677aef251d9dc..1e86d636485618cdf74fe27fc885a3fbcac97b6b 100644 (file)
--- a/units/systemd-journald.service.in
+++ b/units/systemd-journald.service.in
@@ -21,7 +21,7 @@ Restart=always
 RestartSec=0
 StandardOutput=null
 WatchdogSec=3min
-FileDescriptorStoreMax=1024
+FileDescriptorStoreMax=4224
 CapabilityBoundingSet=CAP_SYS_ADMIN CAP_DAC_OVERRIDE CAP_SYS_PTRACE CAP_SYSLOG CAP_AUDIT_CONTROL CAP_AUDIT_READ CAP_CHOWN CAP_DAC_READ_SEARCH CAP_FOWNER CAP_SETUID CAP_SETGID CAP_MAC_OVERRIDE
 MemoryDenyWriteExecute=yes
 RestrictRealtime=yes